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| author | Thierry Reding <thierry.reding@gmail.com> | 2013-12-13 17:31:04 +0100 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-12-16 22:02:51 +0100 |
| commit | c537376cbbbfea2b741b39ad37d5b44104b66e56 (patch) | |
| tree | f6e783e8c50ba309066cb4bda9d72b6894848548 /arch/arm/mach-tegra | |
| parent | ARM: tegra: Add Tegra124 powergate support (diff) | |
| download | linux-c537376cbbbfea2b741b39ad37d5b44104b66e56.tar.xz linux-c537376cbbbfea2b741b39ad37d5b44104b66e56.zip | |
ARM: tegra: Special-case the 3D clamps on Tegra124
A separate register is used to remove the clamps for the GPU on
Tegra124. In order to be able to use the same API, special-case
this particular partition.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/powergate.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/powergate.c b/arch/arm/mach-tegra/powergate.c index a8ac634eda77..0026fb6c984b 100644 --- a/arch/arm/mach-tegra/powergate.c +++ b/arch/arm/mach-tegra/powergate.c @@ -41,6 +41,8 @@ #define PWRGATE_STATUS 0x38 +#define GPU_RG_CNTRL 0x2d4 + static int tegra_num_powerdomains; static int tegra_num_cpu_domains; static const u8 *tegra_cpu_domains; @@ -137,6 +139,17 @@ int tegra_powergate_remove_clamping(int id) return -EINVAL; /* + * The Tegra124 GPU has a separate register (with different semantics) + * to remove clamps. + */ + if (tegra_chip_id == TEGRA124) { + if (id == TEGRA_POWERGATE_3D) { + pmc_write(0, GPU_RG_CNTRL); + return 0; + } + } + + /* * Tegra 2 has a bug where PCIE and VDE clamping masks are * swapped relatively to the partition ids */ |