[PATCH 10/10] ARM: dts: bcm2711: Add vmmc regulator in emmc2

From: Nicolas Saenz Julienne
Date: Fri Mar 06 2020 - 05:39:41 EST


The SD card power can be controlled trough a pin routed into the board's
external GPIO expander. Turn that into a regulator and provide it to
emmc2.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
---
arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index e26ea9006378..8e98e917f9f4 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -56,6 +56,16 @@ sd_io_1v8_reg: sd_io_1v8_reg {
3300000 0x0>;
status = "okay";
};
+
+ sd_vcc_reg: sd_vcc_reg {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc-sd";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ enable-active-high;
+ gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
+ };
};

&firmware {
@@ -174,6 +184,7 @@ brcmf: wifi@1 {
/* EMMC2 is used to drive the SD card */
&emmc2 {
vqmmc-supply = <&sd_io_1v8_reg>;
+ vmmc-supply = <&sd_vcc_reg>;
broken-cd;
status = "okay";
};
--
2.25.1