diff options
| author | Gary King <gking@nvidia.com> | 2010-10-12 17:38:52 -0700 |
|---|---|---|
| committer | Bharat Nihalani <bnihalani@nvidia.com> | 2010-12-08 23:34:48 -0800 |
| commit | 16dfa08f57b273e0e6235cd18daef189cb2f5af4 (patch) | |
| tree | 5eb710587f2c0480cbc7f9cc44cb0cfffce64b36 /arch/arm/mach-tegra/fuse.c | |
| parent | f32cf5d07a0e91e5057c2ca9b032854ccba312a7 (diff) | |
[ARM] tegra: add utility function to read spare fuse bits
spare fuse bits 18 and 19 are used to distinguish A03p Tegra 2
chips from A03 chips. this is needed on some platforms to
determine whether or not LP0 suspend should be enabled.
Change-Id: I03a964eac3783535357faecee8cd35e65350b356
Reviewed-on: http://git-master/r/12078
Tested-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Narendra Damahe <ndamahe@nvidia.com>
Tested-by: Narendra Damahe <ndamahe@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/fuse.c')
| -rw-r--r-- | arch/arm/mach-tegra/fuse.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c index 91919171e747..c2b348c53b25 100644 --- a/arch/arm/mach-tegra/fuse.c +++ b/arch/arm/mach-tegra/fuse.c @@ -177,6 +177,12 @@ unsigned long long tegra_chip_uid(void) return (hi << 32ull) | lo; } +unsigned int tegra_spare_fuse(int bit) +{ + BUG_ON(bit < 0 || bit > 61); + return fuse_readl(FUSE_SPARE_BIT + bit * 4); +} + int tegra_sku_id(void) { int sku_id; |