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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2013-12-01 18:05:08 +0000 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2013-12-01 18:05:08 +0000 |
| commit | c48f2851473bf24cdfec371c5857826eaa6007b5 (patch) | |
| tree | 1ca10df453c1f183a3c2153b31642236114c34fc /target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch | |
| parent | cbbfc5f1e64b05ad423201c5f6e20d83a3eac97f (diff) | |
| download | upstream-c48f2851473bf24cdfec371c5857826eaa6007b5.tar.gz upstream-c48f2851473bf24cdfec371c5857826eaa6007b5.tar.bz2 upstream-c48f2851473bf24cdfec371c5857826eaa6007b5.zip | |
brcm47xx: deactivate mips wait instruction only for BCM4706
The wait instruction is only broken on the BCM4706 and not on the other
similar SoCs.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 38979
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch b/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch index 7715cf2bbc..c585faf8bb 100644 --- a/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch +++ b/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch @@ -1,12 +1,26 @@ ---- a/arch/mips/kernel/idle.c -+++ b/arch/mips/kernel/idle.c -@@ -188,9 +188,6 @@ void __init check_wait(void) - break; +--- a/arch/mips/bcm47xx/setup.c ++++ b/arch/mips/bcm47xx/setup.c +@@ -35,6 +35,7 @@ + #include <asm/prom.h> + #include <asm/reboot.h> + #include <asm/time.h> ++#include <asm/idle.h> + #include <bcm47xx.h> + #include <bcm47xx_nvram.h> + #include <bcm47xx_board.h> +@@ -214,6 +215,15 @@ static void __init bcm47xx_register_bcma + panic("Failed to initialize BCMA bus (err %d)", err); - case CPU_74K: -- cpu_wait = r4k_wait; -- if ((c->processor_id & 0xff) >= PRID_REV_ENCODE_332(2, 1, 0)) -- cpu_wait = r4k_wait_irqoff; - break; + bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); ++ ++ /* The BCM4706 has a problem with the CPU wait instruction. ++ * When r4k_wait or r4k_wait_irqoff is used will just hang and ++ * not return from a msleep(). Removing the cpu_wait ++ * functionality is a workaround for this problem. The BCM4716 ++ * does not have this problem. ++ */ ++ if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706) ++ cpu_wait = NULL; + } + #endif - case CPU_TX49XX: |