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soc/tegra: fuse: Enable fuse clock on suspend for Tegra124

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The FUSE clock should be enabled during suspend on Tegra124. Currently
clk driver enables it on all SoCs, but FUSE may require a higher core
voltage on Tegra30 while enabled. Move the quirk into the FUSE driver
and make it specific to Tegra124.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2021-08-03 01:13:35 +03:00 committed by Thierry Reding
parent 24a15252ff
commit 59c6fceb2e
4 changed files with 39 additions and 0 deletions
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29
drivers/soc/tegra/fuse/fuse-tegra.c
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@ -275,9 +275,38 @@ static int __maybe_unused tegra_fuse_runtime_suspend(struct device *dev)
return 0;
}
static int __maybe_unused tegra_fuse_suspend(struct device *dev)
{
int ret;
/*
* Critical for RAM re-repair operation, which must occur on resume
* from LP1 system suspend and as part of CCPLEX cluster switching.
*/
if (fuse->soc->clk_suspend_on)
ret = pm_runtime_resume_and_get(dev);
else
ret = pm_runtime_force_suspend(dev);
return ret;
}
static int __maybe_unused tegra_fuse_resume(struct device *dev)
{
int ret = 0;
if (fuse->soc->clk_suspend_on)
pm_runtime_put(dev);
else
ret = pm_runtime_force_resume(dev);
return ret;
}
static const struct dev_pm_ops tegra_fuse_pm = {
SET_RUNTIME_PM_OPS(tegra_fuse_runtime_suspend, tegra_fuse_runtime_resume,
NULL)
SET_SYSTEM_SLEEP_PM_OPS(tegra_fuse_suspend, tegra_fuse_resume)
};
static struct platform_driver tegra_fuse_driver = {

1
drivers/soc/tegra/fuse/fuse-tegra20.c
View File

@ -167,4 +167,5 @@ const struct tegra_fuse_soc tegra20_fuse_soc = {
.probe = tegra20_fuse_probe,
.info = &tegra20_fuse_info,
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = false,
};

7
drivers/soc/tegra/fuse/fuse-tegra30.c
View File

@ -112,6 +112,7 @@ const struct tegra_fuse_soc tegra30_fuse_soc = {
.speedo_init = tegra30_init_speedo_data,
.info = &tegra30_fuse_info,
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = false,
};
#endif
@ -127,6 +128,7 @@ const struct tegra_fuse_soc tegra114_fuse_soc = {
.speedo_init = tegra114_init_speedo_data,
.info = &tegra114_fuse_info,
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = false,
};
#endif
@ -208,6 +210,7 @@ const struct tegra_fuse_soc tegra124_fuse_soc = {
.lookups = tegra124_fuse_lookups,
.num_lookups = ARRAY_SIZE(tegra124_fuse_lookups),
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = true,
};
#endif
@ -294,6 +297,7 @@ const struct tegra_fuse_soc tegra210_fuse_soc = {
.lookups = tegra210_fuse_lookups,
.num_lookups = ARRAY_SIZE(tegra210_fuse_lookups),
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = false,
};
#endif
@ -324,6 +328,7 @@ const struct tegra_fuse_soc tegra186_fuse_soc = {
.lookups = tegra186_fuse_lookups,
.num_lookups = ARRAY_SIZE(tegra186_fuse_lookups),
.soc_attr_group = &tegra_soc_attr_group,
.clk_suspend_on = false,
};
#endif
@ -354,6 +359,7 @@ const struct tegra_fuse_soc tegra194_fuse_soc = {
.lookups = tegra194_fuse_lookups,
.num_lookups = ARRAY_SIZE(tegra194_fuse_lookups),
.soc_attr_group = &tegra194_soc_attr_group,
.clk_suspend_on = false,
};
#endif
@ -384,5 +390,6 @@ const struct tegra_fuse_soc tegra234_fuse_soc = {
.lookups = tegra234_fuse_lookups,
.num_lookups = ARRAY_SIZE(tegra234_fuse_lookups),
.soc_attr_group = &tegra194_soc_attr_group,
.clk_suspend_on = false,
};
#endif

2
drivers/soc/tegra/fuse/fuse.h
View File

@ -34,6 +34,8 @@ struct tegra_fuse_soc {
unsigned int num_lookups;
const struct attribute_group *soc_attr_group;
bool clk_suspend_on;
};
struct tegra_fuse {