[PATCH v3 4/5] arm64: tegra: Add vmmc-supply regulator for Jetson AGX Xavier SDMMC1

[Tamás Szűcs]

Create regulator for VDD_3V3_SD and add it to SDMMC1. When vmmc-supply is
undefined the initialization sequence specified in aliases is disregarded.

Signed-off-by: Tamás Szűcs <tsz...@protonmail.ch>
---
 arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi 
b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
index 31b5f00a7547..604a2c8a7478 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
@@ -78,6 +78,8 @@
                        bus-width = <4>;
                        cd-gpios = <&gpio TEGRA194_MAIN_GPIO(G, 7) 
GPIO_ACTIVE_LOW>;
                        disable-wp;
+
+                       vmmc-supply = <&vdd_3v3_sd>;
                };
 
                /* SDMMC4 (eMMC) */
@@ -356,4 +358,14 @@
                gpio = <&gpio TEGRA194_MAIN_GPIO(Z, 1) GPIO_ACTIVE_HIGH>;
                enable-active-high;
        };
+
+       vdd_3v3_sd: regulator@5 {
+               compatible = "regulator-fixed";
+               regulator-name = "VDD_3V3_SD";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               gpio = <&gpio TEGRA194_MAIN_GPIO(A, 0) GPIO_ACTIVE_HIGH>;
+               regulator-boot-on;
+               enable-active-high;
+       };
 };
-- 
2.20.1