Initial commit

target/linux/lantiq/patches-4.14/0051-MIPS-lantiq-improve-USB-initialization.patch

@@ -0,0 +1,49 @@
+From 14909c4e4e836925668e74fc6e0e85ba0283cbf9 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Fri, 6 Jan 2017 17:40:12 +0100
+Subject: [PATCH 2/2] MIPS: lantiq: improve USB initialization
+
+This adds code to initialize the USB controller and PHY also on Danube,
+Amazon SE and AR10. This code is based on the Vendor driver from
+different UGW versions and compared to the hardware documentation.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/mips/lantiq/xway/sysctrl.c |  20 +++++++
+ 2 files changed, 110 insertions(+), 30 deletions(-)
+
+
+--- a/arch/mips/lantiq/xway/sysctrl.c
++++ b/arch/mips/lantiq/xway/sysctrl.c
+@@ -246,6 +246,25 @@ static void pmu_disable(struct clk *clk)
+ 		pr_warn("deactivating PMU module failed!");
+ }
+ 
++static void usb_set_clock(void)
++{
++	unsigned int val = ltq_cgu_r32(ifccr);
++
++	if (of_machine_is_compatible("lantiq,ar10") ||
++	    of_machine_is_compatible("lantiq,grx390")) {
++		val &= ~0x03; /* XTAL divided by 3 */
++	} else if (of_machine_is_compatible("lantiq,ar9") ||
++		   of_machine_is_compatible("lantiq,vr9")) {
++		/* TODO: this depends on the XTAL frequency */
++		val |= 0x03; /* XTAL divided by 3 */
++	} else if (of_machine_is_compatible("lantiq,ase")) {
++		val |= 0x20; /* from XTAL */
++	} else if (of_machine_is_compatible("lantiq,danube")) {
++		val |= 0x30; /* 12 MHz, generated from 36 MHz */
++	}
++	ltq_cgu_w32(val, ifccr);
++}
++
+ /* the pci enable helper */
+ static int pci_enable(struct clk *clk)
+ {
+@@ -569,4 +588,5 @@ void __init ltq_soc_init(void)
+ 		clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE);
+ 		clkdev_add_pmu("1e100400.serial", NULL, 1, 0, PMU_ASC0);
+ 	}
++	usb_set_clock();
+ }