Author: blogic
Date: 2014-11-24 20:12:35 +0100 (Mon, 24 Nov 2014)
New Revision: 43370

Added:
   trunk/target/linux/ramips/patches-3.14/999-pci-reset.patch
Log:
ralink: add proper reset of pci core

Signed-off-by: John Crispin <[email protected]>

Added: trunk/target/linux/ramips/patches-3.14/999-pci-reset.patch
===================================================================
--- trunk/target/linux/ramips/patches-3.14/999-pci-reset.patch                  
        (rev 0)
+++ trunk/target/linux/ramips/patches-3.14/999-pci-reset.patch  2014-11-24 
19:12:35 UTC (rev 43370)
@@ -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();
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