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authorJohn Crispin <john@openwrt.org>2014-11-24 19:12:35 +0000
committerJohn Crispin <john@openwrt.org>2014-11-24 19:12:35 +0000
commit41f9765acd83ab4d021408b872e1a541f80378ba (patch)
treefdf04b12c86e3635215f397efa4c3c1902fa4d08 /target/linux/ramips/patches-3.14/999-pci-reset.patch
parent5f51cfcf55e2c8de3d75daeefe8be5b75eb839ae (diff)
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ralink: add proper reset of pci core
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 43370
Diffstat (limited to 'target/linux/ramips/patches-3.14/999-pci-reset.patch')
-rw-r--r--target/linux/ramips/patches-3.14/999-pci-reset.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.14/999-pci-reset.patch b/target/linux/ramips/patches-3.14/999-pci-reset.patch
new file mode 100644
index 0000000000..8e8589015b
--- /dev/null
+++ b/target/linux/ramips/patches-3.14/999-pci-reset.patch
@@ -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();