Enable SDHI1 on the RZ/G3E SMARC EVK platform using gpio regulator for
voltage switching.
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
.../boot/dts/renesas/r9a09g047e57-smarc.dts | 65 +++++++++++++++++++
.../boot/dts/renesas/renesas-smarc2.dtsi | 9 +++
2 files changed, 74 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index c063d47e2952..0e3d4ff31285 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
@@ -12,10 +12,40 @@
#include "rzg3e-smarc-som.dtsi"
#include "renesas-smarc2.dtsi"
+/*
+ * To enable uSD card on SDIO_USD:
+ *
+ * Switch bank - SW_OPT_MUX-1 (SW_SDIO_M2E):
+ * 0 - SMARC SDIO signal is connected to uSD1
+ * 1 - SMARC SDIO signal is connected to M.2 Key E connector
+ */
+
/ {
model = "Renesas SMARC EVK version 2 based on r9a09g047e57";
compatible = "renesas,smarc2-evk", "renesas,rzg3e-smarcm",
"renesas,r9a09g047e57", "renesas,r9a09g047";
+
+ usd_vdd_3p3v: regulator-usd-vdd-3p3v {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-3.3V";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ vqmmc_sdhi1_ext: regulator-vqmmc-sdhi1-ext {
+ compatible = "regulator-gpio";
+
+ regulator-name = "SDHI1 VccQ";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpios = <&pinctrl RZG3E_GPIO(1, 5) GPIO_ACTIVE_HIGH>;
+
+ gpios-states = <0>;
+ states = <3300000 0>, <1800000 1>;
+ };
};
&pinctrl {
@@ -23,9 +53,44 @@ scif_pins: scif {
pins = "SCIF_TXD", "SCIF_RXD";
renesas,output-impedance = <1>;
};
+
+ sd1-pwr-en {
+ gpio-hog;
+ gpios = <RZG3E_GPIO(1, 6) GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "sd1_pwr_en";
+ };
+
+ sdhi1_pins: sd1 {
+ sd1-cd {
+ pinmux = <RZG3E_PORT_PINMUX(1, 4, 8)>; /* SD1CD */
+ };
+
+ sd1-data {
+ pinmux = <RZG3E_PORT_PINMUX(G, 2, 1)>, /* SD1DAT0 */
+ <RZG3E_PORT_PINMUX(G, 3, 1)>, /* SD1DAT1 */
+ <RZG3E_PORT_PINMUX(G, 4, 1)>, /* SD1DAT2 */
+ <RZG3E_PORT_PINMUX(G, 5, 1)>; /* SD1DAT3 */
+ };
+
+ sd1-ctrl {
+ pinmux = <RZG3E_PORT_PINMUX(G, 0, 1)>, /* SD1CLK */
+ <RZG3E_PORT_PINMUX(G, 1, 1)>; /* SD1CMD */
+ };
+ };
};
&scif0 {
pinctrl-0 = <&scif_pins>;
pinctrl-names = "default";
};
+
+&sdhi1 {
+ pinctrl-0 = <&sdhi1_pins>;
+ pinctrl-1 = <&sdhi1_pins>;
+ pinctrl-names = "default", "state_uhs";
+
+ vmmc-supply = <&usd_vdd_3p3v>;
+ vqmmc-supply = <&vqmmc_sdhi1_ext>;
+ /delete-node/ vqmmc_regulator;
+};
diff --git a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
index e378d55e6e9b..ec79452393b0 100644
--- a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
+++ b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
@@ -16,9 +16,18 @@ chosen {
aliases {
serial3 = &scif0;
+ mmc1 = &sdhi1;
};
};
&scif0 {
status = "okay";
};
+
+&sdhi1 {
+ bus-width = <4>;
+ sd-uhs-sdr50;
+ sd-uhs-sdr104;
+
+ status = "okay";
+};
--
2.43.0
