Merge tag 'tegra-for-5.1-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

cpufreq: tegra: Add support for Tegra210

This uses the DFLL clock support to enable CPU frequency scaling on
Tegra210.

* tag 'tegra-for-5.1-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  cpufreq: dt-platdev: add Tegra210 to blacklist
  cpufreq: tegra124: extend to support Tegra210
  cpufreq: tegra124: do not handle the CPU rail

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 7 insertions, 42 deletions

diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 688f10227793..1a6778e81f90 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -272,8 +272,8 @@ config ARM_TEGRA20_CPUFREQ
 	  This adds the CPUFreq driver support for Tegra20 SOCs.
 
 config ARM_TEGRA124_CPUFREQ
-	tristate "Tegra124 CPUFreq support"
-	depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
+	bool "Tegra124 CPUFreq support"
+	depends on ARCH_TEGRA && CPUFREQ_DT
 	default y
 	help
 	  This adds the CPUFreq driver support for Tegra124 SOCs.
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index b1c5468dca16..47729a22c159 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -119,6 +119,7 @@ static const struct of_device_id blacklist[] __initconst = {
 	{ .compatible = "mediatek,mt8176", },
 
 	{ .compatible = "nvidia,tegra124", },
+	{ .compatible = "nvidia,tegra210", },
 
 	{ .compatible = "qcom,apq8096", },
 	{ .compatible = "qcom,msm8996", },
diff --git a/drivers/cpufreq/tegra124-cpufreq.c b/drivers/cpufreq/tegra124-cpufreq.c
index 43530254201a..ba3795e13ac6 100644
--- a/drivers/cpufreq/tegra124-cpufreq.c
+++ b/drivers/cpufreq/tegra124-cpufreq.c
@@ -22,11 +22,9 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
-#include <linux/regulator/consumer.h>
 #include <linux/types.h>
 
 struct tegra124_cpufreq_priv {
-	struct regulator *vdd_cpu_reg;
 	struct clk *cpu_clk;
 	struct clk *pllp_clk;
 	struct clk *pllx_clk;
@@ -60,14 +58,6 @@ out:
 	return ret;
 }
 
-static void tegra124_cpu_switch_to_pllx(struct tegra124_cpufreq_priv *priv)
-{
-	clk_set_parent(priv->cpu_clk, priv->pllp_clk);
-	clk_disable_unprepare(priv->dfll_clk);
-	regulator_sync_voltage(priv->vdd_cpu_reg);
-	clk_set_parent(priv->cpu_clk, priv->pllx_clk);
-}
-
 static int tegra124_cpufreq_probe(struct platform_device *pdev)
 {
 	struct tegra124_cpufreq_priv *priv;
@@ -88,16 +78,10 @@ static int tegra124_cpufreq_probe(struct platform_device *pdev)
 	if (!np)
 		return -ENODEV;
 
-	priv->vdd_cpu_reg = regulator_get(cpu_dev, "vdd-cpu");
-	if (IS_ERR(priv->vdd_cpu_reg)) {
-		ret = PTR_ERR(priv->vdd_cpu_reg);
-		goto out_put_np;
-	}
-
 	priv->cpu_clk = of_clk_get_by_name(np, "cpu_g");
 	if (IS_ERR(priv->cpu_clk)) {
 		ret = PTR_ERR(priv->cpu_clk);
-		goto out_put_vdd_cpu_reg;
+		goto out_put_np;
 	}
 
 	priv->dfll_clk = of_clk_get_by_name(np, "dfll");
@@ -129,15 +113,13 @@ static int tegra124_cpufreq_probe(struct platform_device *pdev)
 		platform_device_register_full(&cpufreq_dt_devinfo);
 	if (IS_ERR(priv->cpufreq_dt_pdev)) {
 		ret = PTR_ERR(priv->cpufreq_dt_pdev);
-		goto out_switch_to_pllx;
+		goto out_put_pllp_clk;
 	}
 
 	platform_set_drvdata(pdev, priv);
 
 	return 0;
 
-out_switch_to_pllx:
-	tegra124_cpu_switch_to_pllx(priv);
 out_put_pllp_clk:
 	clk_put(priv->pllp_clk);
 out_put_pllx_clk:
@@ -146,34 +128,15 @@ out_put_dfll_clk:
 	clk_put(priv->dfll_clk);
 out_put_cpu_clk:
 	clk_put(priv->cpu_clk);
-out_put_vdd_cpu_reg:
-	regulator_put(priv->vdd_cpu_reg);
 out_put_np:
 	of_node_put(np);
 
 	return ret;
 }
 
-static int tegra124_cpufreq_remove(struct platform_device *pdev)
-{
-	struct tegra124_cpufreq_priv *priv = platform_get_drvdata(pdev);
-
-	platform_device_unregister(priv->cpufreq_dt_pdev);
-	tegra124_cpu_switch_to_pllx(priv);
-
-	clk_put(priv->pllp_clk);
-	clk_put(priv->pllx_clk);
-	clk_put(priv->dfll_clk);
-	clk_put(priv->cpu_clk);
-	regulator_put(priv->vdd_cpu_reg);
-
-	return 0;
-}
-
 static struct platform_driver tegra124_cpufreq_platdrv = {
 	.driver.name	= "cpufreq-tegra124",
 	.probe		= tegra124_cpufreq_probe,
-	.remove		= tegra124_cpufreq_remove,
 };
 
 static int __init tegra_cpufreq_init(void)
@@ -181,7 +144,8 @@ static int __init tegra_cpufreq_init(void)
 	int ret;
 	struct platform_device *pdev;
 
-	if (!of_machine_is_compatible("nvidia,tegra124"))
+	if (!(of_machine_is_compatible("nvidia,tegra124") ||
+		of_machine_is_compatible("nvidia,tegra210")))
 		return -ENODEV;
 
 	/*