Merge tag 'opp-updates-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Pull operating performance points (OPP) updates for 5.20-rc1 from Viresh
Kumar:

"- Make dev_pm_opp_set_regulators() accept NULL terminated list (Viresh
   Kumar).

 - Add dev_pm_opp_set_config() and friends and migrate other
   users/helpers to using them (Viresh Kumar).

 - Add support for multiple clocks for a device (Viresh Kumar and
   Krzysztof Kozlowski).

 - Configure resources before adding OPP table for Venus (Stanimir
   Varbanov).

 - Keep reference count up for opp->np and opp_table->np while they are
   still in use (Liang He).

 - Minor cleanups (Viresh Kumar and Yang Li)."

* tag 'opp-updates-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: (43 commits)
  venus: pm_helpers: Fix warning in OPP during probe
  OPP: Don't drop opp->np reference while it is still in use
  OPP: Don't drop opp_table->np reference while it is still in use
  OPP: Remove dev{m}_pm_opp_of_add_table_noclk()
  PM / devfreq: tegra30: Register config_clks helper
  OPP: Allow config_clks helper for single clk case
  OPP: Provide a simple implementation to configure multiple clocks
  OPP: Assert clk_count == 1 for single clk helpers
  OPP: Add key specific assert() method to key finding helpers
  OPP: Compare bandwidths for all paths in _opp_compare_key()
  OPP: Allow multiple clocks for a device
  dt-bindings: opp: accept array of frequencies
  OPP: Make dev_pm_opp_set_opp() independent of frequency
  OPP: Reuse _opp_compare_key() in _opp_add_static_v2()
  OPP: Remove rate_not_available parameter to _opp_add()
  OPP: Use consistent names for OPP table instances
  OPP: Use generic key finding helpers for bandwidth key
  OPP: Use generic key finding helpers for level key
  OPP: Add generic key finding helpers and use them for freq APIs
  OPP: Remove dev_pm_opp_find_freq_ceil_by_volt()
  ...

2 files changed, 11 insertions, 7 deletions

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 194af7f607a6..5110cd9b2425 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -101,8 +101,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 		return 0;
 	}
 
-	ret = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
-					 pfdev->comp->num_supplies);
+	ret = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names);
 	if (ret) {
 		/* Continue if the optional regulator is missing */
 		if (ret != -ENODEV) {
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index b1e6d238674f..f08b6c1b86a1 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -626,24 +626,29 @@ static int panfrost_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const char * const default_supplies[] = { "mali" };
+/*
+ * The OPP core wants the supply names to be NULL terminated, but we need the
+ * correct num_supplies value for regulator core. Hence, we NULL terminate here
+ * and then initialize num_supplies with ARRAY_SIZE - 1.
+ */
+static const char * const default_supplies[] = { "mali", NULL };
 static const struct panfrost_compatible default_data = {
-	.num_supplies = ARRAY_SIZE(default_supplies),
+	.num_supplies = ARRAY_SIZE(default_supplies) - 1,
 	.supply_names = default_supplies,
 	.num_pm_domains = 1, /* optional */
 	.pm_domain_names = NULL,
 };
 
 static const struct panfrost_compatible amlogic_data = {
-	.num_supplies = ARRAY_SIZE(default_supplies),
+	.num_supplies = ARRAY_SIZE(default_supplies) - 1,
 	.supply_names = default_supplies,
 	.vendor_quirk = panfrost_gpu_amlogic_quirk,
 };
 
-static const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
+static const char * const mediatek_mt8183_supplies[] = { "mali", "sram", NULL };
 static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
 static const struct panfrost_compatible mediatek_mt8183_data = {
-	.num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies),
+	.num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies) - 1,
 	.supply_names = mediatek_mt8183_supplies,
 	.num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
 	.pm_domain_names = mediatek_mt8183_pm_domains,