Add uSD card and eMMC support to the iwg23s single board
computer powered by the RZ/G1C SoC (a.k.a. r8a77470).
Signed-off-by: Fabrizio Castro
Reviewed-by: Biju Das
---
v2->v3:
* No change
v1->v2:
* Added eMMC support as well
* Reworked title and changelog
* Reworked voltage regulators for uSD card on sdhi2
---
arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts | 76 +++
1 file changed, 76 insertions(+)
diff --git a/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
b/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
index 22da819..e5cfb50 100644
--- a/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
+++ b/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
@@ -6,6 +6,7 @@
*/
/dts-v1/;
+#include
#include "r8a77470.dtsi"
/ {
model = "iWave iW-RainboW-G23S single board computer based on RZ/G1C";
@@ -25,6 +26,37 @@
device_type = "memory";
reg = <0 0x4000 0 0x2000>;
};
+
+ reg_1p8v: reg-1p8v {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-1.8V";
+ regulator-min-microvolt = <180>;
+ regulator-max-microvolt = <180>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ reg_3p3v: reg-3p3v {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-3.3V";
+ regulator-min-microvolt = <330>;
+ regulator-max-microvolt = <330>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ vccq_sdhi2: regulator-vccq-sdhi2 {
+ compatible = "regulator-gpio";
+
+ regulator-name = "SDHI2 VccQ";
+ regulator-min-microvolt = <180>;
+ regulator-max-microvolt = <330>;
+
+ gpios = < 24 GPIO_ACTIVE_LOW>;
+ gpios-states = <1>;
+ states = <330 1
+ 180 0>;
+ };
};
{
@@ -46,10 +78,28 @@
};
{
+ mmc_pins_uhs: mmc_uhs {
+ groups = "mmc_data8", "mmc_ctrl";
+ function = "mmc";
+ power-source = <1800>;
+ };
+
scif1_pins: scif1 {
groups = "scif1_data_b";
function = "scif1";
};
+
+ sdhi2_pins: sd2 {
+ groups = "sdhi2_data4", "sdhi2_ctrl";
+ function = "sdhi2";
+ power-source = <3300>;
+ };
+
+ sdhi2_pins_uhs: sd2_uhs {
+ groups = "sdhi2_data4", "sdhi2_ctrl";
+ function = "sdhi2";
+ power-source = <1800>;
+ };
};
{
@@ -58,3 +108,29 @@
status = "okay";
};
+
+ {
+ pinctrl-0 = <_pins_uhs>;
+ pinctrl-names = "state_uhs";
+
+ vmmc-supply = <_3p3v>;
+ vqmmc-supply = <_1p8v>;
+ bus-width = <8>;
+ mmc-hs200-1_8v;
+ non-removable;
+ fixed-emmc-driver-type = <1>;
+ status = "okay";
+};
+
+ {
+ pinctrl-0 = <_pins>;
+ pinctrl-1 = <_pins_uhs>;
+ pinctrl-names = "default", "state_uhs";
+
+ vmmc-supply = <_3p3v>;
+ vqmmc-supply = <_sdhi2>;
+ bus-width = <4>;
+ cd-gpios = < 20 GPIO_ACTIVE_LOW>;
+ sd-uhs-sdr50;
+ status = "okay";
+};
--
2.7.4
