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ralink: add proper reset of pci core

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Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 43370
This commit is contained in:
John Crispin 2014-11-24 19:12:35 +00:00
parent 5f51cfcf55
commit 41f9765acd
1 changed files with 29 additions and 0 deletions
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29
target/linux/ramips/patches-3.14/999-pci-reset.patch Normal file
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@ -0,0 +1,29 @@
Index: linux-3.14.18/arch/mips/ralink/reset.c
===================================================================
--- linux-3.14.18.orig/arch/mips/ralink/reset.c 2014-11-23 00:32:23.268612766 +0100
+++ linux-3.14.18/arch/mips/ralink/reset.c 2014-11-23 01:13:46.850117349 +0100
@@ -18,8 +18,10 @@
#include <asm/mach-ralink/ralink_regs.h>
/* Reset Control */
-#define SYSC_REG_RESET_CTRL 0x034
-#define RSTCTL_RESET_SYSTEM BIT(0)
+#define SYSC_REG_RESET_CTRL 0x034
+
+#define RSTCTL_RESET_PCI BIT(26)
+#define RSTCTL_RESET_SYSTEM BIT(0)
static int ralink_assert_device(struct reset_controller_dev *rcdev,
unsigned long id)
@@ -83,6 +85,11 @@
static void ralink_restart(char *command)
{
+ if (IS_ENABLED(CONFIG_PCI)) {
+ rt_sysc_m32(0, RSTCTL_RESET_PCI, SYSC_REG_RESET_CTRL);
+ mdelay(50);
+ }
+
local_irq_disable();
rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
unreachable();