From c7736edf1b1734455c186deec53a0aa7f8fa87ea Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 11 Jan 2013 13:16:19 +0530 Subject: ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/fuse.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-tegra') diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c index 8121742711fe..f7db0782a6b6 100644 --- a/arch/arm/mach-tegra/fuse.c +++ b/arch/arm/mach-tegra/fuse.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "fuse.h" #include "iomap.h" @@ -105,6 +106,11 @@ static void tegra_get_process_id(void) tegra_core_process_id = (reg >> 12) & 3; } +u32 tegra_read_chipid(void) +{ + return readl_relaxed(IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804); +} + void tegra_init_fuse(void) { u32 id; @@ -119,7 +125,7 @@ void tegra_init_fuse(void) reg = tegra_apb_readl(TEGRA_APB_MISC_BASE + STRAP_OPT); tegra_bct_strapping = (reg & RAM_ID_MASK) >> RAM_CODE_SHIFT; - id = readl_relaxed(IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804); + id = tegra_read_chipid(); tegra_chip_id = (id >> 8) & 0xff; switch (tegra_chip_id) { -- cgit v1.2.3-59-g8ed1b