openwrtv3/target/linux/ar71xx/patches-4.4/106-01-MIPS-ath79-fix-AR724X_PLL_REG_PCIE_CONFIG-offset.patch
Mathias Kresin 0605b15be4 ar71xx: add AR724x PCIe init fixes
Add upstream send AR724x PCIe patches to get the PCIe controller out of
reset during driver init.

The AVM Fritz 300E bootloader doesn't take care of releasing the
different PCIe controller related resets which causes an endless hang
as soon as either the PCIE Reset register (0x180f0018) or the PCI
Application Control register (0x180f0000) is read from.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2017-06-24 22:36:38 +02:00

29 lines
1 KiB
Diff

From 0f15814bcdf59f10b708a3fba636acb089e9a4f1 Mon Sep 17 00:00:00 2001
From: Mathias Kresin <dev@kresin.me>
Date: Thu, 30 Mar 2017 15:34:39 +0200
Subject: [PATCH] MIPS: ath79: fix AR724X_PLL_REG_PCIE_CONFIG offset
According to the QCA u-boot source the "PCIE Phase Lock Loop
Configuration (PCIE_PLL_CONFIG)" register is for all SoCs except the
QCA955X and QCA956X at offset 0x10.
Since the PCIE PLL config register is only defined for the AR724x fix
only this value. The value is wrong since the day it was added and isn't
yet used by any driver.
Signed-off-by: Mathias Kresin <dev@kresin.me>
---
arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
@@ -167,7 +167,7 @@
#define AR71XX_AHB_DIV_MASK 0x7
#define AR724X_PLL_REG_CPU_CONFIG 0x00
-#define AR724X_PLL_REG_PCIE_CONFIG 0x18
+#define AR724X_PLL_REG_PCIE_CONFIG 0x10
#define AR724X_PLL_FB_SHIFT 0
#define AR724X_PLL_FB_MASK 0x3ff