From: Chander Kashyap Date: Tue, 18 Jun 2013 15:29:34 +0000 (+0900) Subject: ARM: EXYNOS: use four additional chipid bits to identify EXYNOS family X-Git-Tag: v3.11-rc1~149^2~9^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6fd0fe85ab761829102b60d590d0fdd71a649bd;p=profile%2Fcommon%2Fkernel-common.git ARM: EXYNOS: use four additional chipid bits to identify EXYNOS family Use chipid[27:20] bits to identify the EXYNOS family while setting up the serial port during the uncompression setup. This uses four additional bits of chipid to identify the EXYNOS family since this is required for identifying EXYNOS5420 SoC. Signed-off-by: Chander Kashyap Signed-off-by: Thomas Abraham Reviewed-by: Tomasz Figa Signed-off-by: Kukjin Kim --- diff --git a/arch/arm/mach-exynos/include/mach/uncompress.h b/arch/arm/mach-exynos/include/mach/uncompress.h index 2979995..1937e0f 100644 --- a/arch/arm/mach-exynos/include/mach/uncompress.h +++ b/arch/arm/mach-exynos/include/mach/uncompress.h @@ -31,13 +31,12 @@ static void arch_detect_cpu(void) /* * product_id is bits 31:12 - * bits 23:20 describe the exynosX family - * + * bits 23:20 describe the exynosX family + * bits 27:24 describe the exynosX family in exynos5420 */ chip_id >>= 20; - chip_id &= 0xf; - if (chip_id == 0x5) + if ((chip_id & 0x0f) == 0x5 || (chip_id & 0xf0) == 0x50) uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT); else uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);