[PATCH v4 13/21] arm: dts: k3-j721e-common-proc-board: Add support for UHS modes for SD card

[Aswath Govindraju]

From: Faiz Abbas <faiz_abbas at ti.com>

Add support for regulators to power cycle and switch IO voltage to the
SD card. This enables support for UHS modes.

Signed-off-by: Faiz Abbas <faiz_abbas at ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
---
 arch/arm/dts/k3-j721e-common-proc-board.dts | 32 +++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm/dts/k3-j721e-common-proc-board.dts b/arch/arm/dts/k3-j721e-common-proc-board.dts
index 496a15e1d1ac..6b29200bba85 100644
--- a/arch/arm/dts/k3-j721e-common-proc-board.dts
+++ b/arch/arm/dts/k3-j721e-common-proc-board.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "k3-j721e-som-p0.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	chosen {
@@ -24,6 +25,29 @@
 		remoteproc7 = &c66_1;
 		remoteproc8 = &c71_0;
 	};
+
+	vdd_mmc1: fixedregulator-sd {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_mmc1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&exp2 2 GPIO_ACTIVE_HIGH>;
+	};
+
+	vdd_sd_dv_alt: gpio-regulator-TLV71033 {
+		compatible = "regulator-gpio";
+		pinctrl-names = "default";
+		pinctrl-0 = <&vdd_sd_dv_alt_pins_default>;
+		regulator-name = "tlv71033";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		gpios = <&main_gpio0 117 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x0
+			  3300000 0x1>;
+	};
 };
 
 &wkup_uart0 {
@@ -79,6 +103,12 @@
 			J721E_IOPAD(0x25c, PIN_INPUT, 0) /* (R28) MMC1_SDWP */
 		>;
 	};
+
+	vdd_sd_dv_alt_pins_default: vdd_sd_dv_alt_pins_default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x1d8, PIN_INPUT, 7) /* (W4) SPI1_CS1.GPIO0_117 */
+		>;
+	};
 };
 
 &main_sdhci0 {
@@ -92,6 +122,8 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	ti,driver-strength-ohm = <50>;
+	vmmc-supply = <&vdd_mmc1>;
+	vqmmc-supply = <&vdd_sd_dv_alt>;
 };
 
 &main_pmx0 {
-- 
2.17.1