diff options
Diffstat (limited to 'arch/mips/bcm47xx/time.c')
| -rw-r--r-- | arch/mips/bcm47xx/time.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c index 536374dcba78..2c85d9254b5e 100644 --- a/arch/mips/bcm47xx/time.c +++ b/arch/mips/bcm47xx/time.c @@ -27,10 +27,16 @@ #include <linux/ssb/ssb.h> #include <asm/time.h> #include <bcm47xx.h> +#include <bcm47xx_nvram.h> +#include <bcm47xx_board.h> void __init plat_time_init(void) { unsigned long hz = 0; + u16 chip_id = 0; + char buf[10]; + int len; + enum bcm47xx_board board = bcm47xx_board_get(); /* * Use deterministic values for initial counter interrupt @@ -43,15 +49,32 @@ void __init plat_time_init(void) #ifdef CONFIG_BCM47XX_SSB case BCM47XX_BUS_TYPE_SSB: hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2; + chip_id = bcm47xx_bus.ssb.chip_id; break; #endif #ifdef CONFIG_BCM47XX_BCMA case BCM47XX_BUS_TYPE_BCMA: hz = bcma_cpu_clock(&bcm47xx_bus.bcma.bus.drv_mips) / 2; + chip_id = bcm47xx_bus.bcma.bus.chipinfo.id; break; #endif } + if (chip_id == 0x5354) { + len = bcm47xx_nvram_getenv("clkfreq", buf, sizeof(buf)); + if (len >= 0 && !strncmp(buf, "200", 4)) + hz = 100000000; + } + + switch (board) { + case BCM47XX_BOARD_ASUS_WL520GC: + case BCM47XX_BOARD_ASUS_WL520GU: + hz = 100000000; + break; + default: + break; + } + if (!hz) hz = 100000000; |