On 10/26/23 2:01 AM, Nitin Yadav wrote:
Hook up required IO voltage regulators to support UHS modes on
SD cards.
Signed-off-by: Nitin Yadav <n-yadav@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index 9f3dfbfbf369..3ae1ea1997a4 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -102,6 +102,19 @@ vdd_mmc1: regulator-3 {
gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
};
+ vddshv_sdio: regulator-4 {
+ compatible = "regulator-gpio";
+ regulator-name = "vddshv_sdio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&vddshv_sdio_default_pins>;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ gpios = <&main_gpio0 31 GPIO_ACTIVE_HIGH>;
+ states = <1800000 0x0>,
+ <3300000 0x1>;
+ };
+
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
@@ -189,6 +202,12 @@ AM62AX_IOPAD(0x1f8, PIN_INPUT_PULLUP, 0) /* (AC2) MMC0_DAT7 */
>;
};
+ vddshv_sdio_default_pins: vddshv-sdio-default-pins {
+ pinctrl-single,pins = <
+ AM62AX_IOPAD(0x07c, PIN_OUTPUT, 7) /* (M19) GPMC0_CLK.GPIO0_31 */
Isn't this ball name N22? I might be wrong, but I did check using
SYSCONFIG tool and datasheet.
+ >;
+ };
+
main_mmc1_pins_default: main-mmc1-default-pins {
pinctrl-single,pins = <
AM62AX_IOPAD(0x23c, PIN_INPUT, 0) /* (A21) MMC1_CMD */
@@ -294,6 +313,7 @@ &sdhci1 {
/* SD/MMC */
status = "okay";
vmmc-supply = <&vdd_mmc1>;
+ vqmmc-supply = <&vddshv_sdio>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
ti,driver-strength-ohm = <50>;
