arm: dts: k3-j721e-common-proc-board: Add support for UHS modes for SD card

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@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>

diff --git a/arch/arm/dts/k3-j721e-common-proc-board.dts b/arch/arm/dts/k3-j721e-common-proc-board.dts
index 496a15e1d1acbcc10f5c0091b71dc98864378ac5..fcfc665f0944f9e761b1731d4b3b9a789a4710dc 100644 (file)
--- 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_OUTPUT, 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 {