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openwrt/target/linux/lantiq/patches-5.4/0051-MIPS-lantiq-improve-USB-initialization.patch
Mathias Kresin 6bf179b270 lantiq: add Linux 5.4 support as testing kernel version
Switch to the mainline Lantiq PCIe PHY driver and update the vr9.dtsi
accordingly.

The Lantiq IRQ SMP support added upstream required changes to the SoC
dtsi as well.

Following changes are made to the Lantiq kernel patches:

  0005-lantiq_etop-pass-struct-device-to-DMA-API-functions.patch
  0006-MIPS-lantiq-pass-struct-device-to-DMA-API-functions.patch
    applied upstream

  0008-MIPS-lantiq-backport-old-timer-code.patch
    access_ok API update because it lost it's type (which was the first)
    parameter in upstream commit 96d4f267e40f95 ("Remove 'type' argument
    from access_ok() function")

  0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch
    merged into 0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch

  0024-MIPS-lantiq-revert-DSA-switch-driver-PMU-clock-chang.patch
    revert upstream changes required for upstream xrx200 ethernet and
    xrx200 (DSA) switch driver but breaking our driver

  0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch
    required for our driver but dropped upstream, add former upstream
    version

  0028-NET-lantiq-various-etop-fixes.patch
    now has to use the phy_set_max_speed API instead of modifying
    phydev->supported. Also call ltq_dma_enable_irq() in
    ltq_etop_open() based on upstream commit cc973aecf0b054 ("MIPS:
    lantiq: Do not enable IRQs in dma open")

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
2020-03-16 22:28:17 +01:00

50 lines
1.6 KiB
Diff

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
@@ -244,6 +244,25 @@ 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)
{
@@ -565,4 +584,5 @@ 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();
}