diff options
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index e4fd40fa27e8..08966c26d65c 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -28,6 +28,7 @@ #include <linux/export.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/platform_device.h> @@ -194,6 +195,9 @@ static inline bool tegra_powergate_is_valid(int id) */ static int tegra_powergate_set(unsigned int id, bool new_state) { + bool status; + int err; + if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps) return -EINVAL; @@ -206,9 +210,12 @@ static int tegra_powergate_set(unsigned int id, bool new_state) tegra_pmc_writel(PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE); + err = readx_poll_timeout(tegra_powergate_state, id, status, + status == new_state, 10, 100000); + mutex_unlock(&pmc->powergates_lock); - return 0; + return err; } /** |