[PATCH 2/2] ARM: dts: socfpga: Add a 3.3V fixed regulator node

[dinguyen at opensource.altera.com]

From: Dinh Nguyen <dinguyen at opensource.altera.com>

Without the 3.3V regulator node, the SDMMC driver will give these warnings:

dw_mmc ff704000.dwmmc0: No vmmc regulator found
dw_mmc ff704000.dwmmc0: No vqmmc regulator found

This patch adds the regulator node, and points the SD/MMC to the regulator.

Signed-off-by: Dinh Nguyen <dinguyen at opensource.altera.com>
---
 arch/arm/boot/dts/socfpga_arria5.dtsi         | 11 ++++++++++-
 arch/arm/boot/dts/socfpga_arria5_socdk.dts    |  5 +++++
 arch/arm/boot/dts/socfpga_cyclone5.dtsi       |  9 +++++++++
 arch/arm/boot/dts/socfpga_cyclone5_socdk.dts  |  2 ++
 arch/arm/boot/dts/socfpga_cyclone5_sockit.dts |  5 +++++
 5 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/socfpga_arria5.dtsi b/arch/arm/boot/dts/socfpga_arria5.dtsi
index 03e8268..8093781 100644
--- a/arch/arm/boot/dts/socfpga_arria5.dtsi
+++ b/arch/arm/boot/dts/socfpga_arria5.dtsi
@@ -29,7 +29,7 @@
 			};
 		};
 
-		dwmmc0 at ff704000 {
+		mmc0: dwmmc0 at ff704000 {
 			num-slots = <1>;
 			broken-cd;
 			bus-width = <4>;
@@ -41,4 +41,13 @@
 			cpu1-start-addr = <0xffd080c4>;
 		};
 	};
+
+	regulator_3_3v_hps: fixed_3_3v_hps_regulator at 0 {
+		compatible = "regulator-fixed";
+		regulator-name = "HPS 3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
 };
diff --git a/arch/arm/boot/dts/socfpga_arria5_socdk.dts b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
index 27d551c..b7e4023 100644
--- a/arch/arm/boot/dts/socfpga_arria5_socdk.dts
+++ b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
@@ -68,6 +68,11 @@
 	};
 };
 
+&mmc0 {
+	vmmc-supply = <&regulator_3_3v_hps>;
+	vqmmc-supply = <&regulator_3_3v_hps>;
+};
+
 &usb1 {
 	status = "okay";
 };
diff --git a/arch/arm/boot/dts/socfpga_cyclone5.dtsi b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
index 28c05e7..743bc3b 100644
--- a/arch/arm/boot/dts/socfpga_cyclone5.dtsi
+++ b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
@@ -48,4 +48,13 @@
 			cpu1-start-addr = <0xffd080c4>;
 		};
 	};
+
+	regulator_3_3v_hps: fixed_3_3v_hps_regulator at 0 {
+		compatible = "regulator-fixed";
+		regulator-name = "HPS 3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
 };
diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
index 739c3b7..e1f56ba 100644
--- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
+++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
@@ -70,6 +70,8 @@
 
 &mmc0 {
 	cd = <&gpio1 18 0>;
+	vmmc-supply = <&regulator_3_3v_hps>;
+	vqmmc-supply = <&regulator_3_3v_hps>;
 };
 
 &usb1 {
diff --git a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts
index d26f155..ea0c454 100644
--- a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts
+++ b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts
@@ -53,6 +53,11 @@
 	rxc-skew-ps = <2000>;
 };
 
+&mmc0 {
+	vmmc-supply = <&regulator_3_3v_hps>;
+	vqmmc-supply = <&regulator_3_3v_hps>;
+};
+
 &usb1 {
 	status = "okay";
 };
-- 
2.0.3