linux-kernel - [PATCH v1 27/30] ARM: tegra: paz00: Add voltage supplies to DVFS-capable devices

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Date:   Thu,  5 Nov 2020 02:44:24 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Peter Chen <Peter.Chen@....com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>
Cc:     linux-samsung-soc@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-usb@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-media@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: [PATCH v1 27/30] ARM: tegra: paz00: Add voltage supplies to DVFS-capable devices

Add voltage supplies to DVFS-capable devices in order to enable
system-wide voltage scaling and allow CORE/RTC regulators to go lower.

Tested-by: Nicolas Chauvet <kwizart@...il.com>
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 arch/arm/boot/dts/tegra20-paz00.dts | 40 ++++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 7 deletions(-)

diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index 52a81d888424..d497eb149fba 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts
@@ -26,7 +26,19 @@ memory@0 {
 	};
 
 	host1x@...00000 {
+		core-supply = <&core_vdd_reg>;
+
+		gr2d@...40000 {
+			core-supply = <&core_vdd_reg>;
+		};
+
+		gr3d@...80000 {
+			core-supply = <&core_vdd_reg>;
+		};
+
 		dc@...00000 {
+			core-supply = <&core_vdd_reg>;
+
 			rgb {
 				status = "okay";
 
@@ -34,11 +46,16 @@ rgb {
 			};
 		};
 
+		dc@...40000 {
+			core-supply = <&core_vdd_reg>;
+		};
+
 		hdmi@...80000 {
 			status = "okay";
 
 			vdd-supply = <&hdmi_vdd_reg>;
 			pll-supply = <&hdmi_pll_reg>;
+			core-supply = <&core_vdd_reg>;
 
 			nvidia,ddc-i2c-bus = <&hdmi_ddc>;
 			nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
@@ -46,6 +63,10 @@ hdmi@...80000 {
 		};
 	};
 
+	vde@...1a000 {
+		core-supply = <&core_vdd_reg>;
+	};
+
 	pinmux@...00014 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&state_default>;
@@ -389,10 +410,10 @@ sys_reg: sys {
 
 				core_vdd_reg: sm0 {
 					regulator-name = "+1.2vs_sm0,vdd_core";
-					regulator-min-microvolt = <1200000>;
-					regulator-max-microvolt = <1225000>;
+					regulator-min-microvolt = <950000>;
+					regulator-max-microvolt = <1300000>;
 					regulator-coupled-with = <&rtc_vdd_reg &cpu_vdd_reg>;
-					regulator-coupled-max-spread = <170000 450000>;
+					regulator-coupled-max-spread = <170000 550000>;
 					regulator-always-on;
 
 					nvidia,tegra-core-regulator;
@@ -403,7 +424,7 @@ cpu_vdd_reg: sm1 {
 					regulator-min-microvolt = <750000>;
 					regulator-max-microvolt = <1100000>;
 					regulator-coupled-with = <&core_vdd_reg &rtc_vdd_reg>;
-					regulator-coupled-max-spread = <450000 450000>;
+					regulator-coupled-max-spread = <550000 550000>;
 					regulator-always-on;
 
 					nvidia,tegra-cpu-regulator;
@@ -427,10 +448,10 @@ ldo1 {
 
 				rtc_vdd_reg: ldo2 {
 					regulator-name = "+1.2vs_ldo2,vdd_rtc";
-					regulator-min-microvolt = <1200000>;
-					regulator-max-microvolt = <1225000>;
+					regulator-min-microvolt = <950000>;
+					regulator-max-microvolt = <1300000>;
 					regulator-coupled-with = <&core_vdd_reg &cpu_vdd_reg>;
-					regulator-coupled-max-spread = <170000 450000>;
+					regulator-coupled-max-spread = <170000 550000>;
 					regulator-always-on;
 
 					nvidia,tegra-rtc-regulator;
@@ -519,6 +540,7 @@ usb@...00000 {
 		compatible = "nvidia,tegra20-udc";
 		status = "okay";
 		dr_mode = "peripheral";
+		core-supply = <&core_vdd_reg>;
 	};
 
 	usb-phy@...00000 {
@@ -529,6 +551,7 @@ usb@...04000 {
 		status = "okay";
 		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 0)
 			GPIO_ACTIVE_LOW>;
+		core-supply = <&core_vdd_reg>;
 	};
 
 	usb-phy@...04000 {
@@ -539,6 +562,7 @@ usb-phy@...04000 {
 
 	usb@...08000 {
 		status = "okay";
+		core-supply = <&core_vdd_reg>;
 	};
 
 	usb-phy@...08000 {
@@ -551,12 +575,14 @@ mmc@...00000 {
 		wp-gpios = <&gpio TEGRA_GPIO(H, 1) GPIO_ACTIVE_HIGH>;
 		power-gpios = <&gpio TEGRA_GPIO(V, 1) GPIO_ACTIVE_HIGH>;
 		bus-width = <4>;
+		core-supply = <&core_vdd_reg>;
 	};
 
 	mmc@...00600 {
 		status = "okay";
 		bus-width = <8>;
 		non-removable;
+		core-supply = <&core_vdd_reg>;
 	};
 
 	backlight: backlight {
-- 
2.27.0