From b861c275ea5cfeab32241c3c92a203579d5699ff Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Wed, 20 Jun 2012 18:06:34 +0530 Subject: ARM: tegra: apbio access using dma for tegra20 only The Tegra20 HW issue with accessing APBIO registers (such as fuse registers) directly from the CPU concurrently with APB DMA accesses has been fixed in Tegra30 and later chips. Access these registers directly from the CPU on Tegra30 and later, and apply the workaround only for Tegra20. Signed-off-by: Laxman Dewangan Tested-by: Chaitanya Bandi Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/common.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm/mach-tegra/common.c') diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c index 204a5c8b0b5..96fef6bcc65 100644 --- a/arch/arm/mach-tegra/common.c +++ b/arch/arm/mach-tegra/common.c @@ -33,6 +33,7 @@ #include "clock.h" #include "fuse.h" #include "pmc.h" +#include "apbio.h" /* * Storage for debug-macro.S's state. @@ -127,6 +128,7 @@ static void __init tegra_init_cache(u32 tag_latency, u32 data_latency) #ifdef CONFIG_ARCH_TEGRA_2x_SOC void __init tegra20_init_early(void) { + tegra_apb_io_init(); tegra_init_fuse(); tegra2_init_clocks(); tegra_clk_init_from_table(tegra20_clk_init_table); @@ -138,6 +140,7 @@ void __init tegra20_init_early(void) #ifdef CONFIG_ARCH_TEGRA_3x_SOC void __init tegra30_init_early(void) { + tegra_apb_io_init(); tegra_init_fuse(); tegra30_init_clocks(); tegra_clk_init_from_table(tegra30_clk_init_table); -- cgit v1.2.3-70-g09d2