c06fb25d1f
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109 lines
3.3 KiB
Diff
109 lines
3.3 KiB
Diff
From 0de5d031f36bca4f7c2686287eff1ef0f5412367 Mon Sep 17 00:00:00 2001
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From: Sergey Sergeev <adron@yapic.net>
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Date: Sun, 16 Jan 2022 17:19:35 +0100
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Subject: [PATCH 2/3] net: mvpp2: fix 10GBase-R support
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Due to the lack of XPCS register initialization code and partially incorrect
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initialization of the MPCS network controler registers (tested on Mikrotik RB5009
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in conjunction with MV88E6393X) the network does not work correctly.
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The problem manifests itself as an arbitrary delay (0.4-4 sec) for the actual
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data transmission to the network! Accordingly, an almost completely non-working
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network for U-Boot is obtained. The code is backported from a similar Linux driver.
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Signed-off-by: Sergey Sergeev <adron@yapic.net>
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Signed-off-by: Robert Marko <robimarko@gmail.com>
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---
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drivers/net/mvpp2.c | 73 +++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 73 insertions(+)
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--- a/drivers/net/mvpp2.c
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+++ b/drivers/net/mvpp2.c
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@@ -3254,6 +3254,76 @@ static int gop_gpcs_reset(struct mvpp2_p
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return 0;
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}
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+static void gop_pcs_reset_assert(struct mvpp2_port *port)
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+{
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+ u32 val;
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+
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+ if (port->priv->hw_version == MVPP21 || port->gop_id != 0)
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+ return;
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+
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+ val = readl(port->priv->mpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ PCS_CLOCK_RESET);
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+ val &= ~(MAC_CLK_RESET_MASK | RX_SD_CLK_RESET_MASK | TX_SD_CLK_RESET_MASK);
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+ val |= CLK_DIV_PHASE_SET_MASK;
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+ writel(val, port->priv->mpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ PCS_CLOCK_RESET);
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+
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+ val = readl(port->priv->xpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ MVPP22_XPCS_GLOBAL_CFG_0_REG);
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+ val &= ~MVPP22_XPCS_PCSRESET;
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+ writel(val, port->priv->xpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ MVPP22_XPCS_GLOBAL_CFG_0_REG);
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+}
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+
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+static void gps_pcs_reset_deassert(struct mvpp2_port *port)
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+{
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+ u32 val;
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+
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+ if (port->priv->hw_version == MVPP21 || port->gop_id != 0)
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+ return;
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+
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+ /* this code is only for case of PHY_INTERFACE_MODE_10GBASER! */
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+ val = readl(port->priv->mpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ PCS_CLOCK_RESET);
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+ val |= MAC_CLK_RESET_MASK | RX_SD_CLK_RESET_MASK |
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+ TX_SD_CLK_RESET_MASK;
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+ val &= ~CLK_DIV_PHASE_SET_MASK;
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+ writel(val, port->priv->mpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ PCS_CLOCK_RESET);
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+}
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+
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+/* Set the internal mux's to the required PCS in the PI */
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+static int gop_xpcs_mode(struct mvpp2_port *port, int num_of_lanes)
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+{
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+ u32 val;
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+ int lane;
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+
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+ switch (num_of_lanes) {
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+ case 1:
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+ lane = 0;
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+ break;
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+ case 2:
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+ lane = 1;
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+ break;
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+ case 4:
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+ lane = 2;
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+ break;
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+ default:
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+ return -1;
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+ }
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+
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+ /* configure XG MAC mode */
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+ val = readl(port->priv->xpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ MVPP22_XPCS_GLOBAL_CFG_0_REG);
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+ val &= ~MVPP22_XPCS_PCSMODE_MASK;
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+ val &= ~MVPP22_XPCS_LANEACTIVE_MASK;
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+ val |= (2 * lane) << MVPP22_XPCS_LANEACTIVE_OFFS;
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+ writel(val, port->priv->xpcs_base + port->gop_id * MVPP22_PORT_OFFSET +
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+ MVPP22_XPCS_GLOBAL_CFG_0_REG);
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+
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+ return 0;
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+}
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+
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static int gop_mpcs_mode(struct mvpp2_port *port)
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{
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u32 val;
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@@ -3396,7 +3466,10 @@ static int gop_port_init(struct mvpp2_po
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num_of_act_lanes = 2;
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mac_num = 0;
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/* configure PCS */
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+ gop_pcs_reset_assert(port);
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+ gop_xpcs_mode(port, num_of_act_lanes);
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gop_mpcs_mode(port);
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+ gps_pcs_reset_deassert(port);
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/* configure MAC */
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gop_xlg_mac_mode_cfg(port, num_of_act_lanes);
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