diff options
| -rw-r--r-- | arch/arm/plat-s3c64xx/cpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c index f9fdaab32ab..19f68b5f0d3 100644 --- a/arch/arm/plat-s3c64xx/cpu.c +++ b/arch/arm/plat-s3c64xx/cpu.c @@ -126,6 +126,14 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size) iotable_init(mach_desc, size); idcode = __raw_readl(S3C_VA_SYS + 0x118); + if (!idcode) { + /* S3C6400 has the ID register in a different place, + * and needs a write before it can be read. */ + + __raw_writel(0x0, S3C_VA_SYS + 0xA1C); + idcode = __raw_readl(S3C_VA_SYS + 0xA1C); + } + s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids)); } |