Define the SILK board dependent parts of the SDHI0  (connected to SDIO Wi-Fi
chip)  and SDHI1  (connected to micro-SD slot) device nodes along with the
necessary voltage regulators.

Based on the original patch by Vladimir Barinov
<[email protected]>.

Signed-off-by: Sergei Shtylyov <[email protected]>

---
 arch/arm/boot/dts/r8a7794-silk.dts |   81 +++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

Index: renesas/arch/arm/boot/dts/r8a7794-silk.dts
===================================================================
--- renesas.orig/arch/arm/boot/dts/r8a7794-silk.dts
+++ renesas/arch/arm/boot/dts/r8a7794-silk.dts
@@ -12,6 +12,7 @@
 
 /dts-v1/;
 #include "r8a7794.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
        model = "SILK";
@@ -39,6 +40,54 @@
                regulator-boot-on;
                regulator-always-on;
        };
+
+       vcc_sdhi0: regulator@1 {
+               compatible = "regulator-fixed";
+
+               regulator-name = "SDHI0 Vcc";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&gpio2 26 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+
+       vccq_sdhi0: regulator@2 {
+               compatible = "regulator-gpio";
+
+               regulator-name = "SDHI0 VccQ";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+               gpios-states = <1>;
+               states = <3300000 1
+                         1800000 0>;
+       };
+
+       vcc_sdhi1: regulator@3 {
+               compatible = "regulator-fixed";
+
+               regulator-name = "SDHI1 Vcc";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&gpio4 26 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+
+       vccq_sdhi1: regulator@4 {
+               compatible = "regulator-gpio";
+
+               regulator-name = "SDHI1 VccQ";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+               gpios-states = <1>;
+               states = <3300000 1
+                         1800000 0>;
+       };
 };
 
 &extal_clk {
@@ -65,6 +114,16 @@
                renesas,groups = "mmc_data8", "mmc_ctrl";
                renesas,function = "mmc";
        };
+
+       sdhi0_pins: sd0 {
+               renesas,groups = "sdhi0_data4", "sdhi0_ctrl";
+               renesas,function = "sdhi0";
+       };
+
+       sdhi1_pins: sd1 {
+               renesas,groups = "sdhi1_data4", "sdhi1_ctrl";
+               renesas,function = "sdhi1";
+       };
 };
 
 &scif2 {
@@ -100,3 +159,25 @@
        non-removable;
        status = "okay";
 };
+
+&sdhi0 {
+       pinctrl-0 = <&sdhi0_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&vcc_sdhi0>;
+       vqmmc-supply = <&vccq_sdhi0>;
+       cd-gpios = <&gpio6 6 GPIO_ACTIVE_LOW>;
+       wp-gpios = <&gpio6 7 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};
+
+&sdhi1 {
+       pinctrl-0 = <&sdhi1_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&vcc_sdhi1>;
+       vqmmc-supply = <&vccq_sdhi1>;
+       cd-gpios = <&gpio6 14 GPIO_ACTIVE_LOW>;
+       wp-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};

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