arm64: dts: m3ulcb: enable SDHI2

This supports SDHI2 for M3ULCB onboard eMMC

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 43 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
index d209e5480ff6..c3f064ac2cb4 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
@@ -55,6 +55,24 @@
                 };
         };
 
+        reg_1p8v: regulator0 {
+                compatible = "regulator-fixed";
+                regulator-name = "fixed-1.8V";
+                regulator-min-microvolt = <1800000>;
+                regulator-max-microvolt = <1800000>;
+                regulator-boot-on;
+                regulator-always-on;
+        };
+
+        reg_3p3v: regulator1 {
+                compatible = "regulator-fixed";
+                regulator-name = "fixed-3.3V";
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+                regulator-boot-on;
+                regulator-always-on;
+        };
+
         vcc_sdhi0: regulator-vcc-sdhi0 {
                 compatible = "regulator-fixed";
 
@@ -113,6 +131,18 @@
                 function = "sdhi0";
                 power-source = <1800>;
         };
+
+        sdhi2_pins: sd2 {
+                groups = "sdhi2_data8", "sdhi2_ctrl";
+                function = "sdhi2";
+                power-source = <3300>;
+        };
+
+        sdhi2_pins_uhs: sd2_uhs {
+                groups = "sdhi2_data8", "sdhi2_ctrl";
+                function = "sdhi2";
+                power-source = <1800>;
+        };
 };
 
 &sdhi0 {
@@ -128,6 +158,19 @@
         status = "okay";
 };
 
+&sdhi2 {
+        /* used for on-board 8bit eMMC */
+        pinctrl-0 = <&sdhi2_pins>;
+        pinctrl-1 = <&sdhi2_pins_uhs>;
+        pinctrl-names = "default", "state_uhs";
+
+        vmmc-supply = <&reg_3p3v>;
+        vqmmc-supply = <&reg_1p8v>;
+        bus-width = <8>;
+        non-removable;
+        status = "okay";
+};
+
 &scif2 {
         pinctrl-0 = <&scif2_pins>;
         pinctrl-names = "default";