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-rw-r--r--drivers/soc/tegra/pmc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 8e358dbffaed..e4fd40fa27e8 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -176,7 +176,10 @@ static void tegra_pmc_writel(u32 value, unsigned long offset)
static inline bool tegra_powergate_state(int id)
{
- return (tegra_pmc_readl(PWRGATE_STATUS) & BIT(id)) != 0;
+ if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
+ return (tegra_pmc_readl(GPU_RG_CNTRL) & 0x1) == 0;
+ else
+ return (tegra_pmc_readl(PWRGATE_STATUS) & BIT(id)) != 0;
}
static inline bool tegra_powergate_is_valid(int id)
@@ -191,6 +194,9 @@ static inline bool tegra_powergate_is_valid(int id)
*/
static int tegra_powergate_set(unsigned int id, bool new_state)
{
+ if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
+ return -EINVAL;
+
mutex_lock(&pmc->powergates_lock);
if (tegra_powergate_state(id) == new_state) {