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authorDmitry Osipenko <digetx@gmail.com>2021-08-03 01:13:35 +0300
committerThierry Reding <treding@nvidia.com>2021-08-11 11:55:56 +0200
commit59c6fceb2ecc382c3d20508a235b539bf23af1f0 (patch)
tree580fb68e7c13544c0ccd554a8a88c588fdccd140 /drivers/soc
parent24a15252ff049ca76bdcc51dd445503b88b2c6df (diff)
downloadlinux-59c6fceb2ecc382c3d20508a235b539bf23af1f0.tar.bz2
soc/tegra: fuse: Enable fuse clock on suspend for Tegra124
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>
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra.c29
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra20.c1
-rw-r--r--drivers/soc/tegra/fuse/fuse-tegra30.c7
-rw-r--r--drivers/soc/tegra/fuse/fuse.h2
4 files changed, 39 insertions, 0 deletions
diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index 747237865aff..f2151815db58 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -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 = {
diff --git a/drivers/soc/tegra/fuse/fuse-tegra20.c b/drivers/soc/tegra/fuse/fuse-tegra20.c
index cd6a273707fe..8ec9fc5e5e4b 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra20.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra20.c
@@ -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,
};
diff --git a/drivers/soc/tegra/fuse/fuse-tegra30.c b/drivers/soc/tegra/fuse/fuse-tegra30.c
index dd03565a39a4..b071d433d74f 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra30.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra30.c
@@ -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
diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h
index e057a58e2060..de58feba0435 100644
--- a/drivers/soc/tegra/fuse/fuse.h
+++ b/drivers/soc/tegra/fuse/fuse.h
@@ -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 {