Specifying these rails should eventually let us do UHS.
Signed-off-by: Doug Anderson <diand...@chromium.org>
---
Changes in v4:
- Add vcc_sd regulator which is present on EVB 2.0 boards
Changes in v3: None
Changes in v2:
- Fix subject line
arch/arm/boot/dts/rk3288-evb.dtsi | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi
b/arch/arm/boot/dts/rk3288-evb.dtsi
index 5e895a5..6d4ae9f 100644
--- a/arch/arm/boot/dts/rk3288-evb.dtsi
+++ b/arch/arm/boot/dts/rk3288-evb.dtsi
@@ -103,6 +103,23 @@
regulator-always-on;
regulator-boot-on;
};
+
+ /*
+ * NOTE: vcc_sd isn't hooked up on v1.0 boards where power comes from
+ * vcc_io directly. Those boards won't be able to power cycle SD cards
+ * but it shouldn't hurt to toggle this pin there anyway.
+ */
+ vcc_sd: sdmmc-regulator {
+ compatible = "regulator-fixed";
+ gpio = <&gpio7 11 GPIO_ACTIVE_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdmmc_pwr>;
+ regulator-name = "vcc_sd";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ startup-delay-us = <100000>;
+ vin-supply = <&vcc_io>;
+ };
};
&emmc {
@@ -132,6 +149,8 @@
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
status = "okay";
+ vmmc-supply = <&vcc_sd>;
+ vqmmc-supply = <&vccio_sd>;
};
&i2c0 {
@@ -223,6 +242,10 @@
sdmmc_cmd: sdmmc-cmd {
rockchip,pins = <6 21 RK_FUNC_1 &pcfg_pull_up_drv_8ma>;
};
+
+ sdmmc_pwr: sdmmc-pwr {
+ rockchip,pins = <7 11 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
};
usb {
--
2.2.0.rc0.207.ga3a616c
--
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