ipq806x: add platform usb support
This change adds DWC3 QCOM USB phys and TCSR drivers. These are cherry-picked from the following LKML threads: *dwc3 qcom: https://lkml.org/lkml/2014/9/12/599 *tcsr: https://lkml.org/lkml/2015/2/9/579 We're also adding an additional patch to add the corresponding dev nodes in the IPQ806x and AP148 dts files. Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org> SVN-Revision: 45261
This commit is contained in:
John Crispin
@@ -0,0 +1,511 @@
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--- a/drivers/phy/Kconfig
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+++ b/drivers/phy/Kconfig
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@@ -256,4 +256,15 @@ config PHY_STIH41X_USB
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Enable this to support the USB transceiver that is part of
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STMicroelectronics STiH41x SoC series.
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+config PHY_QCOM_DWC3
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+ tristate "QCOM DWC3 USB PHY support"
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+ depends on ARCH_QCOM
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+ depends on HAS_IOMEM
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+ depends on OF
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+ select GENERIC_PHY
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+ help
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+ This option enables support for the Synopsis PHYs present inside the
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+ Qualcomm USB3.0 DWC3 controller. This driver supports both HS and SS
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+ PHY controllers.
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+
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endmenu
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--- a/drivers/phy/Makefile
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+++ b/drivers/phy/Makefile
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@@ -31,3 +31,4 @@ obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) +=
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obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
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obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o
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obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o
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+obj-$(CONFIG_PHY_QCOM_DWC3) += phy-qcom-dwc3.o
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--- /dev/null
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+++ b/drivers/phy/phy-qcom-dwc3.c
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@@ -0,0 +1,483 @@
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+/* Copyright (c) 2013-2014, Code Aurora Forum. All rights reserved.
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 and
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+ * only version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#include <linux/clk.h>
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+#include <linux/err.h>
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+#include <linux/io.h>
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+#include <linux/module.h>
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+#include <linux/of.h>
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+#include <linux/phy/phy.h>
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+#include <linux/platform_device.h>
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+#include <linux/delay.h>
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+
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+/**
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+ * USB QSCRATCH Hardware registers
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+ */
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+#define QSCRATCH_GENERAL_CFG (0x08)
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+#define HSUSB_PHY_CTRL_REG (0x10)
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+
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+/* PHY_CTRL_REG */
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+#define HSUSB_CTRL_DMSEHV_CLAMP BIT(24)
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+#define HSUSB_CTRL_USB2_SUSPEND BIT(23)
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+#define HSUSB_CTRL_UTMI_CLK_EN BIT(21)
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+#define HSUSB_CTRL_UTMI_OTG_VBUS_VALID BIT(20)
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+#define HSUSB_CTRL_USE_CLKCORE BIT(18)
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+#define HSUSB_CTRL_DPSEHV_CLAMP BIT(17)
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+#define HSUSB_CTRL_COMMONONN BIT(11)
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+#define HSUSB_CTRL_ID_HV_CLAMP BIT(9)
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+#define HSUSB_CTRL_OTGSESSVLD_CLAMP BIT(8)
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+#define HSUSB_CTRL_CLAMP_EN BIT(7)
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+#define HSUSB_CTRL_RETENABLEN BIT(1)
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+#define HSUSB_CTRL_POR BIT(0)
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+
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+/* QSCRATCH_GENERAL_CFG */
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+#define HSUSB_GCFG_XHCI_REV BIT(2)
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+
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+/**
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+ * USB QSCRATCH Hardware registers
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+ */
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+#define SSUSB_PHY_CTRL_REG (0x00)
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+#define SSUSB_PHY_PARAM_CTRL_1 (0x04)
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+#define SSUSB_PHY_PARAM_CTRL_2 (0x08)
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+#define CR_PROTOCOL_DATA_IN_REG (0x0c)
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+#define CR_PROTOCOL_DATA_OUT_REG (0x10)
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+#define CR_PROTOCOL_CAP_ADDR_REG (0x14)
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+#define CR_PROTOCOL_CAP_DATA_REG (0x18)
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+#define CR_PROTOCOL_READ_REG (0x1c)
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+#define CR_PROTOCOL_WRITE_REG (0x20)
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+
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+/* PHY_CTRL_REG */
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+#define SSUSB_CTRL_REF_USE_PAD BIT(28)
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+#define SSUSB_CTRL_TEST_POWERDOWN BIT(27)
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+#define SSUSB_CTRL_LANE0_PWR_PRESENT BIT(24)
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+#define SSUSB_CTRL_SS_PHY_EN BIT(8)
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+#define SSUSB_CTRL_SS_PHY_RESET BIT(7)
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+
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+/* SSPHY control registers */
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+#define SSPHY_CTRL_RX_OVRD_IN_HI(lane) (0x1006 + 0x100 * lane)
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+#define SSPHY_CTRL_TX_OVRD_DRV_LO(lane) (0x1002 + 0x100 * lane)
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+
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+/* RX OVRD IN HI bits */
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+#define RX_OVRD_IN_HI_RX_RESET_OVRD BIT(13)
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+#define RX_OVRD_IN_HI_RX_RX_RESET BIT(12)
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+#define RX_OVRD_IN_HI_RX_EQ_OVRD BIT(11)
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+#define RX_OVRD_IN_HI_RX_EQ_MASK 0x0700
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+#define RX_OVRD_IN_HI_RX_EQ_SHIFT 8
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+#define RX_OVRD_IN_HI_RX_EQ_EN_OVRD BIT(7)
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+#define RX_OVRD_IN_HI_RX_EQ_EN BIT(6)
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+#define RX_OVRD_IN_HI_RX_LOS_FILTER_OVRD BIT(5)
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+#define RX_OVRD_IN_HI_RX_LOS_FILTER_MASK 0x0018
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+#define RX_OVRD_IN_HI_RX_RATE_OVRD BIT(2)
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+#define RX_OVRD_IN_HI_RX_RATE_MASK 0x0003
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+
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+/* TX OVRD DRV LO register bits */
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+#define TX_OVRD_DRV_LO_AMPLITUDE_MASK 0x007F
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+#define TX_OVRD_DRV_LO_PREEMPH_MASK 0x3F80
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+#define TX_OVRD_DRV_LO_PREEMPH_SHIFT 7
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+#define TX_OVRD_DRV_LO_EN BIT(14)
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+
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+struct qcom_dwc3_usb_phy {
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+ void __iomem *base;
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+ struct device *dev;
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+ struct phy *phy;
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+
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+ int (*phy_init)(struct qcom_dwc3_usb_phy *phy_dwc3);
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+ int (*phy_exit)(struct qcom_dwc3_usb_phy *phy_dwc3);
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+
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+ struct clk *xo_clk;
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+ struct clk *ref_clk;
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+};
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+
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+/**
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+ * Write register and read back masked value to confirm it is written
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+ *
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+ * @base - QCOM DWC3 PHY base virtual address.
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+ * @offset - register offset.
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+ * @mask - register bitmask specifying what should be updated
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+ * @val - value to write.
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+ */
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+static inline void qcom_dwc3_phy_write_readback(
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+ struct qcom_dwc3_usb_phy *phy_dwc3, u32 offset,
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+ const u32 mask, u32 val)
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+{
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+ u32 write_val, tmp = readl(phy_dwc3->base + offset);
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+
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+ tmp &= ~mask; /* retain other bits */
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+ write_val = tmp | val;
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+
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+ writel(write_val, phy_dwc3->base + offset);
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+
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+ /* Read back to see if val was written */
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+ tmp = readl(phy_dwc3->base + offset);
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+ tmp &= mask; /* clear other bits */
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+
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+ if (tmp != val)
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+ dev_err(phy_dwc3->dev, "write: %x to QSCRATCH: %x FAILED\n",
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+ val, offset);
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+}
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+
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+static int wait_for_latch(void __iomem *addr)
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+{
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+ u32 retry = 10;
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+
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+ while (true) {
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+ if (!readl(addr))
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+ break;
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+
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+ if (--retry == 0)
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+ return -ETIMEDOUT;
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+
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+ usleep_range(10, 20);
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+ }
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+
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+ return 0;
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+}
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+
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+/**
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+ * Write SSPHY register
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+ *
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+ * @base - QCOM DWC3 PHY base virtual address.
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+ * @addr - SSPHY address to write.
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+ * @val - value to write.
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+ */
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+static int qcom_dwc3_ss_write_phycreg(void __iomem *base, u32 addr, u32 val)
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+{
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+ int ret;
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+
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+ writel(addr, base + CR_PROTOCOL_DATA_IN_REG);
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+ writel(0x1, base + CR_PROTOCOL_CAP_ADDR_REG);
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+
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+ ret = wait_for_latch(base + CR_PROTOCOL_CAP_ADDR_REG);
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+ if (ret)
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+ goto err_wait;
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+
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+ writel(val, base + CR_PROTOCOL_DATA_IN_REG);
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+ writel(0x1, base + CR_PROTOCOL_CAP_DATA_REG);
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+
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+ ret = wait_for_latch(base + CR_PROTOCOL_CAP_DATA_REG);
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+ if (ret)
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+ goto err_wait;
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+
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+ writel(0x1, base + CR_PROTOCOL_WRITE_REG);
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+
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+ ret = wait_for_latch(base + CR_PROTOCOL_WRITE_REG);
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+
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+err_wait:
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+ return ret;
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+}
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+
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+/**
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+ * Read SSPHY register.
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+ *
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+ * @base - QCOM DWC3 PHY base virtual address.
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+ * @addr - SSPHY address to read.
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+ */
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+static int qcom_dwc3_ss_read_phycreg(void __iomem *base, u32 addr, u32 *val)
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+{
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+ int ret;
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+ bool first_read = true;
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+
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+ writel(addr, base + CR_PROTOCOL_DATA_IN_REG);
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+ writel(0x1, base + CR_PROTOCOL_CAP_ADDR_REG);
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+
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+ ret = wait_for_latch(base + CR_PROTOCOL_CAP_ADDR_REG);
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+ if (ret)
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+ goto err_wait;
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+
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+ /*
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+ * Due to hardware bug, first read of SSPHY register might be
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+ * incorrect. Hence as workaround, SW should perform SSPHY register
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+ * read twice, but use only second read and ignore first read.
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+ */
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+retry:
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+ writel(0x1, base + CR_PROTOCOL_READ_REG);
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+
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+ ret = wait_for_latch(base + CR_PROTOCOL_READ_REG);
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+ if (ret)
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+ goto err_wait;
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+
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+ if (first_read) {
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+ readl(base + CR_PROTOCOL_DATA_OUT_REG);
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+ first_read = false;
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+ goto retry;
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+ }
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+
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+ *val = readl(base + CR_PROTOCOL_DATA_OUT_REG);
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+
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+err_wait:
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+ return ret;
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+}
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+
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+static int qcom_dwc3_phy_power_on(struct phy *phy)
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+{
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+ int ret;
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+ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
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+
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+ ret = clk_prepare_enable(phy_dwc3->xo_clk);
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+ if (ret)
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+ return ret;
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+
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+ ret = clk_prepare_enable(phy_dwc3->ref_clk);
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+ if (ret)
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+ clk_disable_unprepare(phy_dwc3->xo_clk);
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+
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+ return ret;
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+}
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+
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+static int qcom_dwc3_phy_power_off(struct phy *phy)
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+{
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+ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
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+
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+ clk_disable_unprepare(phy_dwc3->ref_clk);
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+ clk_disable_unprepare(phy_dwc3->xo_clk);
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+
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+ return 0;
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+}
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+
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+static int qcom_dwc3_hs_phy_init(struct qcom_dwc3_usb_phy *phy_dwc3)
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+{
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+ u32 val;
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+
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+ /*
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+ * HSPHY Initialization: Enable UTMI clock, select 19.2MHz fsel
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+ * enable clamping, and disable RETENTION (power-on default is ENABLED)
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+ */
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+ val = HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_DMSEHV_CLAMP |
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+ HSUSB_CTRL_RETENABLEN | HSUSB_CTRL_COMMONONN |
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+ HSUSB_CTRL_OTGSESSVLD_CLAMP | HSUSB_CTRL_ID_HV_CLAMP |
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+ HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_UTMI_OTG_VBUS_VALID |
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+ HSUSB_CTRL_UTMI_CLK_EN | HSUSB_CTRL_CLAMP_EN | 0x70;
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+
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+ /* use core clock if external reference is not present */
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+ if (!phy_dwc3->xo_clk)
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+ val |= HSUSB_CTRL_USE_CLKCORE;
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+
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+ writel(val, phy_dwc3->base + HSUSB_PHY_CTRL_REG);
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+ usleep_range(2000, 2200);
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+
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+ /* Disable (bypass) VBUS and ID filters */
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+ writel(HSUSB_GCFG_XHCI_REV, phy_dwc3->base + QSCRATCH_GENERAL_CFG);
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+
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+ return 0;
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+}
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+
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+static int qcom_dwc3_ss_phy_init(struct qcom_dwc3_usb_phy *phy_dwc3)
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+{
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+ int ret;
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+ u32 data = 0;
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+
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+ /* reset phy */
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+ data = readl_relaxed(phy_dwc3->base + SSUSB_PHY_CTRL_REG);
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+ writel_relaxed(data | SSUSB_CTRL_SS_PHY_RESET,
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+ phy_dwc3->base + SSUSB_PHY_CTRL_REG);
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+ usleep_range(2000, 2200);
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+ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
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+
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+ /* clear REF_PAD if we don't have XO clk */
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+ if (!phy_dwc3->xo_clk)
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+ data &= ~SSUSB_CTRL_REF_USE_PAD;
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+ else
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+ data |= SSUSB_CTRL_REF_USE_PAD;
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+
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+ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
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+ msleep(30);
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+
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+ data |= SSUSB_CTRL_SS_PHY_EN | SSUSB_CTRL_LANE0_PWR_PRESENT;
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+ writel_relaxed(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
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+
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+ /*
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+ * Fix RX Equalization setting as follows
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+ * LANE0.RX_OVRD_IN_HI. RX_EQ_EN set to 0
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+ * LANE0.RX_OVRD_IN_HI.RX_EQ_EN_OVRD set to 1
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+ * LANE0.RX_OVRD_IN_HI.RX_EQ set to 3
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+ * LANE0.RX_OVRD_IN_HI.RX_EQ_OVRD set to 1
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+ */
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+ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base,
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+ SSPHY_CTRL_RX_OVRD_IN_HI(0), &data);
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+ if (ret)
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+ goto err_phy_trans;
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+
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+ data &= ~RX_OVRD_IN_HI_RX_EQ_EN;
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+ data |= RX_OVRD_IN_HI_RX_EQ_EN_OVRD;
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+ data &= ~RX_OVRD_IN_HI_RX_EQ_MASK;
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+ data |= 0x3 << RX_OVRD_IN_HI_RX_EQ_SHIFT;
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+ data |= RX_OVRD_IN_HI_RX_EQ_OVRD;
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+ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3->base,
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+ SSPHY_CTRL_RX_OVRD_IN_HI(0), data);
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+ if (ret)
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+ goto err_phy_trans;
|
||||
+
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+ /*
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+ * Set EQ and TX launch amplitudes as follows
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+ * LANE0.TX_OVRD_DRV_LO.PREEMPH set to 22
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+ * LANE0.TX_OVRD_DRV_LO.AMPLITUDE set to 127
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+ * LANE0.TX_OVRD_DRV_LO.EN set to 1.
|
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+ */
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+ ret = qcom_dwc3_ss_read_phycreg(phy_dwc3->base,
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+ SSPHY_CTRL_TX_OVRD_DRV_LO(0), &data);
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+ if (ret)
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+ goto err_phy_trans;
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+
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+ data &= ~TX_OVRD_DRV_LO_PREEMPH_MASK;
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+ data |= 0x16 << TX_OVRD_DRV_LO_PREEMPH_SHIFT;
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+ data &= ~TX_OVRD_DRV_LO_AMPLITUDE_MASK;
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+ data |= 0x7f;
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+ data |= TX_OVRD_DRV_LO_EN;
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+ ret = qcom_dwc3_ss_write_phycreg(phy_dwc3->base,
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+ SSPHY_CTRL_TX_OVRD_DRV_LO(0), data);
|
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+ if (ret)
|
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+ goto err_phy_trans;
|
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+
|
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+ /*
|
||||
+ * Set the QSCRATCH PHY_PARAM_CTRL1 parameters as follows
|
||||
+ * TX_FULL_SWING [26:20] amplitude to 127
|
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+ * TX_DEEMPH_3_5DB [13:8] to 22
|
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+ * LOS_BIAS [2:0] to 0x5
|
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+ */
|
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+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_PARAM_CTRL_1,
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+ 0x07f03f07, 0x07f01605);
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+
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+err_phy_trans:
|
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+ return ret;
|
||||
+}
|
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+
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||||
+static int qcom_dwc3_ss_phy_exit(struct qcom_dwc3_usb_phy *phy_dwc3)
|
||||
+{
|
||||
+ /* Sequence to put SSPHY in low power state:
|
||||
+ * 1. Clear REF_PHY_EN in PHY_CTRL_REG
|
||||
+ * 2. Clear REF_USE_PAD in PHY_CTRL_REG
|
||||
+ * 3. Set TEST_POWERED_DOWN in PHY_CTRL_REG to enable PHY retention
|
||||
+ * 4. Disable SSPHY ref clk
|
||||
+ */
|
||||
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
|
||||
+ SSUSB_CTRL_SS_PHY_EN, 0x0);
|
||||
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
|
||||
+ SSUSB_CTRL_REF_USE_PAD, 0x0);
|
||||
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
|
||||
+ 0x0, SSUSB_CTRL_TEST_POWERDOWN);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int qcom_dwc3_phy_init(struct phy *phy)
|
||||
+{
|
||||
+ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
|
||||
+
|
||||
+ if (phy_dwc3->phy_init)
|
||||
+ return phy_dwc3->phy_init(phy_dwc3);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int qcom_dwc3_phy_exit(struct phy *phy)
|
||||
+{
|
||||
+ struct qcom_dwc3_usb_phy *phy_dwc3 = phy_get_drvdata(phy);
|
||||
+
|
||||
+ if (phy_dwc3->phy_exit)
|
||||
+ return qcom_dwc3_ss_phy_exit(phy_dwc3);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static struct phy_ops qcom_dwc3_phy_ops = {
|
||||
+ .init = qcom_dwc3_phy_init,
|
||||
+ .exit = qcom_dwc3_phy_exit,
|
||||
+ .power_on = qcom_dwc3_phy_power_on,
|
||||
+ .power_off = qcom_dwc3_phy_power_off,
|
||||
+ .owner = THIS_MODULE,
|
||||
+};
|
||||
+
|
||||
+static const struct of_device_id qcom_dwc3_phy_table[] = {
|
||||
+ { .compatible = "qcom,dwc3-hs-usb-phy", },
|
||||
+ { .compatible = "qcom,dwc3-ss-usb-phy", },
|
||||
+ { /* Sentinel */ }
|
||||
+};
|
||||
+MODULE_DEVICE_TABLE(of, qcom_dwc3_phy_table);
|
||||
+
|
||||
+static int qcom_dwc3_phy_probe(struct platform_device *pdev)
|
||||
+{
|
||||
+ struct qcom_dwc3_usb_phy *phy_dwc3;
|
||||
+ struct phy_provider *phy_provider;
|
||||
+ struct resource *res;
|
||||
+
|
||||
+ phy_dwc3 = devm_kzalloc(&pdev->dev, sizeof(*phy_dwc3), GFP_KERNEL);
|
||||
+ if (!phy_dwc3)
|
||||
+ return -ENOMEM;
|
||||
+
|
||||
+ platform_set_drvdata(pdev, phy_dwc3);
|
||||
+
|
||||
+ phy_dwc3->dev = &pdev->dev;
|
||||
+
|
||||
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
+ phy_dwc3->base = devm_ioremap_resource(phy_dwc3->dev, res);
|
||||
+ if (IS_ERR(phy_dwc3->base))
|
||||
+ return PTR_ERR(phy_dwc3->base);
|
||||
+
|
||||
+ phy_dwc3->ref_clk = devm_clk_get(phy_dwc3->dev, "ref");
|
||||
+ if (IS_ERR(phy_dwc3->ref_clk)) {
|
||||
+ dev_dbg(phy_dwc3->dev, "cannot get reference clock\n");
|
||||
+ return PTR_ERR(phy_dwc3->ref_clk);
|
||||
+ }
|
||||
+
|
||||
+ if (of_device_is_compatible(pdev->dev.of_node,
|
||||
+ "qcom,dwc3-hs-usb-phy")) {
|
||||
+ clk_set_rate(phy_dwc3->ref_clk, 60000000);
|
||||
+ phy_dwc3->phy_init = qcom_dwc3_hs_phy_init;
|
||||
+ } else if (of_device_is_compatible(pdev->dev.of_node,
|
||||
+ "qcom,dwc3-ss-usb-phy")) {
|
||||
+ phy_dwc3->phy_init = qcom_dwc3_ss_phy_init;
|
||||
+ phy_dwc3->phy_exit = qcom_dwc3_ss_phy_exit;
|
||||
+ clk_set_rate(phy_dwc3->ref_clk, 125000000);
|
||||
+ } else {
|
||||
+ dev_err(phy_dwc3->dev, "Unknown phy\n");
|
||||
+ return -EINVAL;
|
||||
+ }
|
||||
+
|
||||
+ phy_dwc3->xo_clk = devm_clk_get(phy_dwc3->dev, "xo");
|
||||
+ if (IS_ERR(phy_dwc3->xo_clk)) {
|
||||
+ dev_dbg(phy_dwc3->dev, "cannot get TCXO clock\n");
|
||||
+ phy_dwc3->xo_clk = NULL;
|
||||
+ }
|
||||
+
|
||||
+ phy_dwc3->phy = devm_phy_create(phy_dwc3->dev, NULL, &qcom_dwc3_phy_ops,
|
||||
+ NULL);
|
||||
+
|
||||
+ if (IS_ERR(phy_dwc3->phy))
|
||||
+ return PTR_ERR(phy_dwc3->phy);
|
||||
+
|
||||
+ phy_set_drvdata(phy_dwc3->phy, phy_dwc3);
|
||||
+
|
||||
+ phy_provider = devm_of_phy_provider_register(phy_dwc3->dev,
|
||||
+ of_phy_simple_xlate);
|
||||
+
|
||||
+ if (IS_ERR(phy_provider))
|
||||
+ return PTR_ERR(phy_provider);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static struct platform_driver qcom_dwc3_phy_driver = {
|
||||
+ .probe = qcom_dwc3_phy_probe,
|
||||
+ .driver = {
|
||||
+ .name = "qcom-dwc3-usb-phy",
|
||||
+ .owner = THIS_MODULE,
|
||||
+ .of_match_table = qcom_dwc3_phy_table,
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+module_platform_driver(qcom_dwc3_phy_driver);
|
||||
+
|
||||
+MODULE_ALIAS("platform:phy-qcom-dwc3");
|
||||
+MODULE_LICENSE("GPL v2");
|
||||
+MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>");
|
||||
+MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
|
||||
+MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver");
|
||||
@@ -0,0 +1,125 @@
|
||||
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
|
||||
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
|
||||
@@ -112,5 +112,29 @@
|
||||
sata@29000000 {
|
||||
status = "ok";
|
||||
};
|
||||
+
|
||||
+ phy@100f8800 { /* USB3 port 1 HS phy */
|
||||
+ status = "ok";
|
||||
+ };
|
||||
+
|
||||
+ phy@100f8830 { /* USB3 port 1 SS phy */
|
||||
+ status = "ok";
|
||||
+ };
|
||||
+
|
||||
+ phy@110f8800 { /* USB3 port 0 HS phy */
|
||||
+ status = "ok";
|
||||
+ };
|
||||
+
|
||||
+ phy@110f8830 { /* USB3 port 0 SS phy */
|
||||
+ status = "ok";
|
||||
+ };
|
||||
+
|
||||
+ usb30@0 {
|
||||
+ status = "ok";
|
||||
+ };
|
||||
+
|
||||
+ usb30@1 {
|
||||
+ status = "ok";
|
||||
+ };
|
||||
};
|
||||
};
|
||||
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
@@ -291,5 +291,90 @@
|
||||
#clock-cells = <1>;
|
||||
#reset-cells = <1>;
|
||||
};
|
||||
+
|
||||
+ hs_phy_1: phy@100f8800 {
|
||||
+ compatible = "qcom,dwc3-hs-usb-phy";
|
||||
+ reg = <0x100f8800 0x30>;
|
||||
+ clocks = <&gcc USB30_1_UTMI_CLK>;
|
||||
+ clock-names = "ref";
|
||||
+ #phy-cells = <0>;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+ };
|
||||
+
|
||||
+ ss_phy_1: phy@100f8830 {
|
||||
+ compatible = "qcom,dwc3-ss-usb-phy";
|
||||
+ reg = <0x100f8830 0x30>;
|
||||
+ clocks = <&gcc USB30_1_MASTER_CLK>;
|
||||
+ clock-names = "ref";
|
||||
+ #phy-cells = <0>;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+ };
|
||||
+
|
||||
+ hs_phy_0: phy@110f8800 {
|
||||
+ compatible = "qcom,dwc3-hs-usb-phy";
|
||||
+ reg = <0x110f8800 0x30>;
|
||||
+ clocks = <&gcc USB30_0_UTMI_CLK>;
|
||||
+ clock-names = "ref";
|
||||
+ #phy-cells = <0>;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+ };
|
||||
+
|
||||
+ ss_phy_0: phy@110f8830 {
|
||||
+ compatible = "qcom,dwc3-ss-usb-phy";
|
||||
+ reg = <0x110f8830 0x30>;
|
||||
+ clocks = <&gcc USB30_0_MASTER_CLK>;
|
||||
+ clock-names = "ref";
|
||||
+ #phy-cells = <0>;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+ };
|
||||
+
|
||||
+ usb3_0: usb30@0 {
|
||||
+ compatible = "qcom,dwc3";
|
||||
+ #address-cells = <1>;
|
||||
+ #size-cells = <1>;
|
||||
+ clocks = <&gcc USB30_0_MASTER_CLK>;
|
||||
+ clock-names = "core";
|
||||
+
|
||||
+ ranges;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+
|
||||
+ dwc3@11000000 {
|
||||
+ compatible = "snps,dwc3";
|
||||
+ reg = <0x11000000 0xcd00>;
|
||||
+ interrupts = <0 110 0x4>;
|
||||
+ phys = <&hs_phy_0>, <&ss_phy_0>;
|
||||
+ phy-names = "usb2-phy", "usb3-phy";
|
||||
+ tx-fifo-resize;
|
||||
+ dr_mode = "host";
|
||||
+ };
|
||||
+ };
|
||||
+
|
||||
+ usb3_1: usb30@1 {
|
||||
+ compatible = "qcom,dwc3";
|
||||
+ #address-cells = <1>;
|
||||
+ #size-cells = <1>;
|
||||
+ clocks = <&gcc USB30_1_MASTER_CLK>;
|
||||
+ clock-names = "core";
|
||||
+
|
||||
+ ranges;
|
||||
+
|
||||
+ status = "disabled";
|
||||
+
|
||||
+ dwc3@10000000 {
|
||||
+ compatible = "snps,dwc3";
|
||||
+ reg = <0x10000000 0xcd00>;
|
||||
+ interrupts = <0 205 0x4>;
|
||||
+ phys = <&hs_phy_1>, <&ss_phy_1>;
|
||||
+ phy-names = "usb2-phy", "usb3-phy";
|
||||
+ tx-fifo-resize;
|
||||
+ dr_mode = "host";
|
||||
+ };
|
||||
+ };
|
||||
+
|
||||
};
|
||||
};
|
||||
@@ -0,0 +1,258 @@
|
||||
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt
|
||||
index 4ce24d4..186e5f4 100644
|
||||
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt
|
||||
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,gsbi.txt
|
||||
@@ -6,7 +6,8 @@ configuration settings. The mode setting will govern the input/output mode of
|
||||
the 4 GSBI IOs.
|
||||
|
||||
Required properties:
|
||||
-- compatible: must contain "qcom,gsbi-v1.0.0" for APQ8064/IPQ8064
|
||||
+- compatible: Should contain "qcom,gsbi-v1.0.0"
|
||||
+- cell-index: Should contain the GSBI index
|
||||
- reg: Address range for GSBI registers
|
||||
- clocks: required clock
|
||||
- clock-names: must contain "iface" entry
|
||||
@@ -16,6 +17,8 @@ Required properties:
|
||||
Optional properties:
|
||||
- qcom,crci : indicates CRCI MUX value for QUP CRCI ports. Please reference
|
||||
dt-bindings/soc/qcom,gsbi.h for valid CRCI mux values.
|
||||
+- syscon-tcsr: indicates phandle of TCSR syscon node. Required if child uses
|
||||
+ dma.
|
||||
|
||||
Required properties if child node exists:
|
||||
- #address-cells: Must be 1
|
||||
@@ -39,6 +42,7 @@ Example for APQ8064:
|
||||
|
||||
gsbi4@16300000 {
|
||||
compatible = "qcom,gsbi-v1.0.0";
|
||||
+ cell-index = <4>;
|
||||
reg = <0x16300000 0x100>;
|
||||
clocks = <&gcc GSBI4_H_CLK>;
|
||||
clock-names = "iface";
|
||||
@@ -48,6 +52,8 @@ Example for APQ8064:
|
||||
qcom,mode = <GSBI_PROT_I2C_UART>;
|
||||
qcom,crci = <GSBI_CRCI_QUP>;
|
||||
|
||||
+ syscon-tcsr = <&tcsr>;
|
||||
+
|
||||
/* child nodes go under here */
|
||||
|
||||
i2c_qup4: i2c@16380000 {
|
||||
@@ -76,3 +82,9 @@ Example for APQ8064:
|
||||
};
|
||||
};
|
||||
|
||||
+ tcsr: syscon@1a400000 {
|
||||
+ compatible = "qcom,apq8064-tcsr", "syscon";
|
||||
+ reg = <0x1a400000 0x100>;
|
||||
+ };
|
||||
+
|
||||
+
|
||||
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
|
||||
index 7bd2c94..460b2db 100644
|
||||
--- a/drivers/soc/qcom/Kconfig
|
||||
+++ b/drivers/soc/qcom/Kconfig
|
||||
@@ -4,6 +4,7 @@
|
||||
config QCOM_GSBI
|
||||
tristate "QCOM General Serial Bus Interface"
|
||||
depends on ARCH_QCOM
|
||||
+ select MFD_SYSCON
|
||||
help
|
||||
Say y here to enable GSBI support. The GSBI provides control
|
||||
functions for connecting the underlying serial UART, SPI, and I2C
|
||||
diff --git a/drivers/soc/qcom/qcom_gsbi.c b/drivers/soc/qcom/qcom_gsbi.c
|
||||
index 729425d..09c669e 100644
|
||||
--- a/drivers/soc/qcom/qcom_gsbi.c
|
||||
+++ b/drivers/soc/qcom/qcom_gsbi.c
|
||||
@@ -18,22 +18,129 @@
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/platform_device.h>
|
||||
+#include <linux/regmap.h>
|
||||
+#include <linux/mfd/syscon.h>
|
||||
+#include <dt-bindings/soc/qcom,gsbi.h>
|
||||
|
||||
#define GSBI_CTRL_REG 0x0000
|
||||
#define GSBI_PROTOCOL_SHIFT 4
|
||||
+#define MAX_GSBI 12
|
||||
+
|
||||
+#define TCSR_ADM_CRCI_BASE 0x70
|
||||
+
|
||||
+struct crci_config {
|
||||
+ u32 num_rows;
|
||||
+ const u32 (*array)[MAX_GSBI];
|
||||
+};
|
||||
+
|
||||
+static const u32 crci_ipq8064[][MAX_GSBI] = {
|
||||
+ {
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+ {
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static const struct crci_config config_ipq8064 = {
|
||||
+ .num_rows = ARRAY_SIZE(crci_ipq8064),
|
||||
+ .array = crci_ipq8064,
|
||||
+};
|
||||
+
|
||||
+static const unsigned int crci_apq8064[][MAX_GSBI] = {
|
||||
+ {
|
||||
+ 0x001800, 0x006000, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000400, 0x000000, 0x000000,
|
||||
+ 0x000000, 0x000000, 0x000000, 0x000000
|
||||
+ },
|
||||
+ {
|
||||
+ 0x000000, 0x000000, 0x000000, 0x000000,
|
||||
+ 0x000000, 0x000020, 0x0000c0, 0x000000,
|
||||
+ 0x000000, 0x000000, 0x000000, 0x000000
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static const struct crci_config config_apq8064 = {
|
||||
+ .num_rows = ARRAY_SIZE(crci_apq8064),
|
||||
+ .array = crci_apq8064,
|
||||
+};
|
||||
+
|
||||
+static const unsigned int crci_msm8960[][MAX_GSBI] = {
|
||||
+ {
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000400, 0x000000, 0x000000,
|
||||
+ 0x000000, 0x000000, 0x000000, 0x000000
|
||||
+ },
|
||||
+ {
|
||||
+ 0x000000, 0x000000, 0x000000, 0x000000,
|
||||
+ 0x000000, 0x000020, 0x0000c0, 0x000300,
|
||||
+ 0x001800, 0x006000, 0x000000, 0x000000
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static const struct crci_config config_msm8960 = {
|
||||
+ .num_rows = ARRAY_SIZE(crci_msm8960),
|
||||
+ .array = crci_msm8960,
|
||||
+};
|
||||
+
|
||||
+static const unsigned int crci_msm8660[][MAX_GSBI] = {
|
||||
+ { /* ADM 0 - B */
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+ { /* ADM 0 - B */
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+ { /* ADM 1 - A */
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+ { /* ADM 1 - B */
|
||||
+ 0x000003, 0x00000c, 0x000030, 0x0000c0,
|
||||
+ 0x000300, 0x000c00, 0x003000, 0x00c000,
|
||||
+ 0x030000, 0x0c0000, 0x300000, 0xc00000
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static const struct crci_config config_msm8660 = {
|
||||
+ .num_rows = ARRAY_SIZE(crci_msm8660),
|
||||
+ .array = crci_msm8660,
|
||||
+};
|
||||
|
||||
struct gsbi_info {
|
||||
struct clk *hclk;
|
||||
u32 mode;
|
||||
u32 crci;
|
||||
+ struct regmap *tcsr;
|
||||
+};
|
||||
+
|
||||
+static const struct of_device_id tcsr_dt_match[] = {
|
||||
+ { .compatible = "qcom,tcsr-ipq8064", .data = &config_ipq8064},
|
||||
+ { .compatible = "qcom,tcsr-apq8064", .data = &config_apq8064},
|
||||
+ { .compatible = "qcom,tcsr-msm8960", .data = &config_msm8960},
|
||||
+ { .compatible = "qcom,tcsr-msm8660", .data = &config_msm8660},
|
||||
+ { },
|
||||
};
|
||||
|
||||
static int gsbi_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device_node *node = pdev->dev.of_node;
|
||||
+ struct device_node *tcsr_node;
|
||||
+ const struct of_device_id *match;
|
||||
struct resource *res;
|
||||
void __iomem *base;
|
||||
struct gsbi_info *gsbi;
|
||||
+ int i;
|
||||
+ u32 mask, gsbi_num;
|
||||
+ const struct crci_config *config = NULL;
|
||||
|
||||
gsbi = devm_kzalloc(&pdev->dev, sizeof(*gsbi), GFP_KERNEL);
|
||||
|
||||
@@ -45,6 +152,32 @@ static int gsbi_probe(struct platform_device *pdev)
|
||||
if (IS_ERR(base))
|
||||
return PTR_ERR(base);
|
||||
|
||||
+ /* get the tcsr node and setup the config and regmap */
|
||||
+ gsbi->tcsr = syscon_regmap_lookup_by_phandle(node, "syscon-tcsr");
|
||||
+
|
||||
+ if (!IS_ERR(gsbi->tcsr)) {
|
||||
+ tcsr_node = of_parse_phandle(node, "syscon-tcsr", 0);
|
||||
+ if (tcsr_node) {
|
||||
+ match = of_match_node(tcsr_dt_match, tcsr_node);
|
||||
+ if (match)
|
||||
+ config = match->data;
|
||||
+ else
|
||||
+ dev_warn(&pdev->dev, "no matching TCSR\n");
|
||||
+
|
||||
+ of_node_put(tcsr_node);
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ if (of_property_read_u32(node, "cell-index", &gsbi_num)) {
|
||||
+ dev_err(&pdev->dev, "missing cell-index\n");
|
||||
+ return -EINVAL;
|
||||
+ }
|
||||
+
|
||||
+ if (gsbi_num < 1 || gsbi_num > MAX_GSBI) {
|
||||
+ dev_err(&pdev->dev, "invalid cell-index\n");
|
||||
+ return -EINVAL;
|
||||
+ }
|
||||
+
|
||||
if (of_property_read_u32(node, "qcom,mode", &gsbi->mode)) {
|
||||
dev_err(&pdev->dev, "missing mode configuration\n");
|
||||
return -EINVAL;
|
||||
@@ -64,6 +197,25 @@ static int gsbi_probe(struct platform_device *pdev)
|
||||
writel_relaxed((gsbi->mode << GSBI_PROTOCOL_SHIFT) | gsbi->crci,
|
||||
base + GSBI_CTRL_REG);
|
||||
|
||||
+ /*
|
||||
+ * modify tcsr to reflect mode and ADM CRCI mux
|
||||
+ * Each gsbi contains a pair of bits, one for RX and one for TX
|
||||
+ * SPI mode requires both bits cleared, otherwise they are set
|
||||
+ */
|
||||
+ if (config) {
|
||||
+ for (i = 0; i < config->num_rows; i++) {
|
||||
+ mask = config->array[i][gsbi_num - 1];
|
||||
+
|
||||
+ if (gsbi->mode == GSBI_PROT_SPI)
|
||||
+ regmap_update_bits(gsbi->tcsr,
|
||||
+ TCSR_ADM_CRCI_BASE + 4 * i, mask, 0);
|
||||
+ else
|
||||
+ regmap_update_bits(gsbi->tcsr,
|
||||
+ TCSR_ADM_CRCI_BASE + 4 * i, mask, mask);
|
||||
+
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
/* make sure the gsbi control write is not reordered */
|
||||
wmb();
|
||||
|
||||
--
|
||||
1.9.1
|
||||
|
||||
@@ -0,0 +1,65 @@
|
||||
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
@@ -132,6 +132,7 @@
|
||||
|
||||
gsbi2: gsbi@12480000 {
|
||||
compatible = "qcom,gsbi-v1.0.0";
|
||||
+ cell-index = <2>;
|
||||
reg = <0x12480000 0x100>;
|
||||
clocks = <&gcc GSBI2_H_CLK>;
|
||||
clock-names = "iface";
|
||||
@@ -140,6 +141,8 @@
|
||||
ranges;
|
||||
status = "disabled";
|
||||
|
||||
+ syscon-tcsr = <&tcsr>;
|
||||
+
|
||||
uart2: serial@12490000 {
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x12490000 0x1000>,
|
||||
@@ -167,6 +170,7 @@
|
||||
|
||||
gsbi4: gsbi@16300000 {
|
||||
compatible = "qcom,gsbi-v1.0.0";
|
||||
+ cell-index = <4>;
|
||||
reg = <0x16300000 0x100>;
|
||||
clocks = <&gcc GSBI4_H_CLK>;
|
||||
clock-names = "iface";
|
||||
@@ -175,6 +179,8 @@
|
||||
ranges;
|
||||
status = "disabled";
|
||||
|
||||
+ syscon-tcsr = <&tcsr>;
|
||||
+
|
||||
uart4: serial@16340000 {
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x16340000 0x1000>,
|
||||
@@ -201,6 +207,7 @@
|
||||
|
||||
gsbi5: gsbi@1a200000 {
|
||||
compatible = "qcom,gsbi-v1.0.0";
|
||||
+ cell-index = <5>;
|
||||
reg = <0x1a200000 0x100>;
|
||||
clocks = <&gcc GSBI5_H_CLK>;
|
||||
clock-names = "iface";
|
||||
@@ -209,6 +216,8 @@
|
||||
ranges;
|
||||
status = "disabled";
|
||||
|
||||
+ syscon-tcsr = <&tcsr>;
|
||||
+
|
||||
uart5: serial@1a240000 {
|
||||
compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
|
||||
reg = <0x1a240000 0x1000>,
|
||||
@@ -279,6 +288,11 @@
|
||||
status = "disabled";
|
||||
};
|
||||
|
||||
+ tcsr: syscon@1a400000 {
|
||||
+ compatible = "qcom,tcsr-ipq8064", "syscon";
|
||||
+ reg = <0x1a400000 0x100>;
|
||||
+ };
|
||||
+
|
||||
qcom,ssbi@500000 {
|
||||
compatible = "qcom,ssbi";
|
||||
reg = <0x00500000 0x1000>;
|
||||
@@ -1,7 +1,7 @@
|
||||
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
|
||||
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
|
||||
@@ -18,8 +18,15 @@
|
||||
bootargs = "console=ttyMSM0,115200 root=/dev/mtdblock12 rootfstype=squashfs,jffs2";
|
||||
@@ -22,8 +22,15 @@
|
||||
linux,stdout-path = "serial0:115200n8";
|
||||
};
|
||||
|
||||
+ aliases {
|
||||
@@ -16,7 +16,7 @@
|
||||
i2c4_pins: i2c4_pinmux {
|
||||
pins = "gpio12", "gpio13";
|
||||
function = "gsbi4";
|
||||
@@ -34,6 +41,25 @@
|
||||
@@ -38,6 +45,25 @@
|
||||
bias-none;
|
||||
};
|
||||
};
|
||||
@@ -42,16 +42,16 @@
|
||||
};
|
||||
|
||||
gsbi@16300000 {
|
||||
@@ -72,6 +98,7 @@
|
||||
@@ -76,6 +102,7 @@
|
||||
#size-cells = <1>;
|
||||
spi-max-frequency = <50000000>;
|
||||
reg = <0>;
|
||||
+ m25p,fast-read;
|
||||
|
||||
partition@0 {
|
||||
label = "0:SBL1";
|
||||
@@ -148,5 +175,66 @@
|
||||
sata@29000000 {
|
||||
label = "lowlevel_init";
|
||||
@@ -136,5 +163,66 @@
|
||||
usb30@1 {
|
||||
status = "ok";
|
||||
};
|
||||
+
|
||||
@@ -127,11 +127,10 @@
|
||||
|
||||
/ {
|
||||
model = "Qualcomm IPQ8064";
|
||||
@@ -279,5 +280,42 @@
|
||||
#clock-cells = <1>;
|
||||
#reset-cells = <1>;
|
||||
@@ -390,5 +391,41 @@
|
||||
};
|
||||
+
|
||||
};
|
||||
|
||||
+ nss-gmac-common {
|
||||
+ reg = <0x03000000 0x0000FFFF 0x1bb00000 0x0000FFFF 0x00900000 0x00004000>;
|
||||
+ reg-names = "nss_reg_base" , "qsgmii_reg_base", "clk_ctl_base";
|
||||
|
||||
Reference in New Issue
Block a user