Commit 59c6fceb authored by Dmitry Osipenko's avatar Dmitry Osipenko Committed by Thierry Reding
Browse files

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: default avatarDmitry Osipenko <digetx@gmail.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 24a15252

drivers/soc/tegra/fuse/fuse-tegra.c

+29 −0
Original line number Diff line number Diff line
@@ -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 = {

drivers/soc/tegra/fuse/fuse-tegra20.c

+1 −0
Original line number Diff line number Diff line
@@ -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,

};

drivers/soc/tegra/fuse/fuse-tegra30.c

+7 −0
Original line number Diff line number Diff line
@@ -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

drivers/soc/tegra/fuse/fuse.h

+2 −0
Original line number Diff line number Diff line
@@ -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 {