+From 26db431400c336c4cc658cb4888bab18d254c64a Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 9 Aug 2014 00:00:09 +0200
+Subject: [PATCH] MIPS: BCM47XX: fix reboot problem on BCM4705/BCM4785
+
+This adds some code based on code from the Broadcom GPL tar to fix the
+reboot problems on BCM4705/BCM4785. I tried rebooting my device for ~10
+times and have never seen a problem. This reverts the changes in the
+previous commit and adds the real fix as suggested by Rafał.
+
+Setting bit 22 in Reg 22, sel 4 puts the BIU (Bus Interface Unit) into
+async mode.
+
+The previous try was this:
+commit 316cad5c1d4daee998cd1f83ccdb437f6f20d45c
+Author: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Mon Jul 28 23:53:57 2014 +0200
+
+ MIPS: BCM47XX: make reboot more relaiable
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
-@@ -55,12 +55,12 @@ static void bcm47xx_machine_restart(char
+@@ -55,7 +55,16 @@ static void bcm47xx_machine_restart(char
switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
case BCM47XX_BUS_TYPE_SSB:
-- ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
-+ ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 3);
++ if (bcm47xx_bus.bcma.bus.chipinfo.id == 0x4785)
++ write_c0_diag4(1 << 22);
+ ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
++ if (bcm47xx_bus.bcma.bus.chipinfo.id == 0x4785) {
++ __asm__ __volatile__(
++ ".set\tmips3\n\t"
++ "sync\n\t"
++ "wait\n\t"
++ ".set\tmips0");
++ }
break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
-- bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
-+ bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 3);
- break;
- #endif
- }
+#endif /* defined(CONFIG_BCM47XX_BCMA) && defined(CONFIG_HIGHMEM) */
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
-@@ -214,6 +214,9 @@ void __init plat_mem_setup(void)
+@@ -223,6 +223,9 @@ void __init plat_mem_setup(void)
bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
bcm47xx_register_bcma();
bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
#include <bcm47xx.h>
#include <bcm47xx_nvram.h>
#include <bcm47xx_board.h>
-@@ -234,6 +235,31 @@ void __init plat_mem_setup(void)
+@@ -243,6 +244,31 @@ void __init plat_mem_setup(void)
mips_set_machine_name(bcm47xx_board_get_name());
}
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
#include <linux/bcma/bcma_soc.h>
-@@ -260,6 +263,12 @@ static int __init bcm47xx_cpu_fixes(void
+@@ -269,6 +272,12 @@ static int __init bcm47xx_cpu_fixes(void
}
arch_initcall(bcm47xx_cpu_fixes);
static int __init bcm47xx_register_bus_complete(void)
{
switch (bcm47xx_bus_type) {
-@@ -278,6 +287,7 @@ static int __init bcm47xx_register_bus_c
+@@ -287,6 +296,7 @@ static int __init bcm47xx_register_bus_c
bcm47xx_buttons_register();
bcm47xx_leds_register();
bcm47xx_workarounds();
#include <asm/bootinfo.h>
#include <asm/prom.h>
#include <asm/reboot.h>
-@@ -269,6 +270,33 @@ static struct fixed_phy_status bcm47xx_f
+@@ -278,6 +279,33 @@ static struct fixed_phy_status bcm47xx_f
.duplex = DUPLEX_FULL,
};
static int __init bcm47xx_register_bus_complete(void)
{
switch (bcm47xx_bus_type) {
-@@ -288,6 +316,7 @@ static int __init bcm47xx_register_bus_c
+@@ -297,6 +325,7 @@ static int __init bcm47xx_register_bus_c
bcm47xx_leds_register();
bcm47xx_workarounds();
fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
-@@ -127,6 +127,10 @@ static int bcm47xx_get_invariants(struct
+@@ -136,6 +136,10 @@ static int bcm47xx_get_invariants(struct
if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);