diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2021-09-27 01:40:26 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-10-04 23:10:54 +0300 |
| commit | 33110589a3f0ed8e2c4c8213bc44858a93cefc01 (patch) | |
| tree | 28d0f8747df18e7cee673df5f032b4f91f9b2a78 /drivers | |
| parent | 0d7281b27af9d9602a6d62a132f19932b1b0fd88 (diff) | |
| download | linux-33110589a3f0ed8e2c4c8213bc44858a93cefc01.tar.xz | |
soc/tegra: pmc: Disable PMC state syncing
Disable PMC state syncing in order to ensure that we won't break older
kernels once device-trees will be updated with the addition of the power
domains. This also allows to apply device-tree PM patches independently
from the driver patches.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 50091c4ec948..fb8faf7b226a 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -360,6 +360,7 @@ struct tegra_pmc_soc { unsigned int num_pmc_clks; bool has_blink_output; bool has_usb_sleepwalk; + bool supports_core_domain; }; /** @@ -3041,6 +3042,7 @@ static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc, } static const struct tegra_pmc_soc tegra20_pmc_soc = { + .supports_core_domain = false, .num_powergates = ARRAY_SIZE(tegra20_powergates), .powergates = tegra20_powergates, .num_cpu_powergates = 0, @@ -3101,6 +3103,7 @@ static const char * const tegra30_reset_sources[] = { }; static const struct tegra_pmc_soc tegra30_pmc_soc = { + .supports_core_domain = false, .num_powergates = ARRAY_SIZE(tegra30_powergates), .powergates = tegra30_powergates, .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates), @@ -3157,6 +3160,7 @@ static const u8 tegra114_cpu_powergates[] = { }; static const struct tegra_pmc_soc tegra114_pmc_soc = { + .supports_core_domain = false, .num_powergates = ARRAY_SIZE(tegra114_powergates), .powergates = tegra114_powergates, .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates), @@ -3273,6 +3277,7 @@ static const struct pinctrl_pin_desc tegra124_pin_descs[] = { }; static const struct tegra_pmc_soc tegra124_pmc_soc = { + .supports_core_domain = false, .num_powergates = ARRAY_SIZE(tegra124_powergates), .powergates = tegra124_powergates, .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates), @@ -3398,6 +3403,7 @@ static const struct tegra_wake_event tegra210_wake_events[] = { }; static const struct tegra_pmc_soc tegra210_pmc_soc = { + .supports_core_domain = false, .num_powergates = ARRAY_SIZE(tegra210_powergates), .powergates = tegra210_powergates, .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates), @@ -3555,6 +3561,7 @@ static const struct tegra_wake_event tegra186_wake_events[] = { }; static const struct tegra_pmc_soc tegra186_pmc_soc = { + .supports_core_domain = false, .num_powergates = 0, .powergates = NULL, .num_cpu_powergates = 0, @@ -3689,6 +3696,7 @@ static const struct tegra_wake_event tegra194_wake_events[] = { }; static const struct tegra_pmc_soc tegra194_pmc_soc = { + .supports_core_domain = false, .num_powergates = 0, .powergates = NULL, .num_cpu_powergates = 0, @@ -3757,6 +3765,7 @@ static const char * const tegra234_reset_sources[] = { }; static const struct tegra_pmc_soc tegra234_pmc_soc = { + .supports_core_domain = false, .num_powergates = 0, .powergates = NULL, .num_cpu_powergates = 0, @@ -3804,6 +3813,14 @@ static void tegra_pmc_sync_state(struct device *dev) int err; /* + * Newer device-trees have power domains, but we need to prepare all + * device drivers with runtime PM and OPP support first, otherwise + * state syncing is unsafe. + */ + if (!pmc->soc->supports_core_domain) + return; + + /* * Older device-trees don't have core PD, and thus, there are * no dependencies that will block the state syncing. We shouldn't * mark the domain as synced in this case. |