平台：Rockchip
CPU：RK3288
PMU：RK808-B
SDIO
SDIO是在SD内存卡接口的基础上发展起来的外设接口，SDIO接口兼容以前的SD内存卡，并且可以连接SDIO接口的设备，目前根据SDIO协议的SPEC，SDIO接口支持的设备总类有蓝牙，网卡，电视卡等
SDMMC
经过我在百度上面的苦苦搜寻，关于SDMMC的总结如下：没有SDMMC卡或者是SDMMC接口，资料上出现SDMMC可能要表达的意思是SD/MMC，或者SDMMC是数字安全记忆卡（Secure Digital Memory Card）的简称，即SDMMC就是SD卡
一.RK808
1.kernel\arch\arm\boot\dts\rk3288-tb_zk_r32f.dts
/dts-v1/;
#include "rk3288-evb.dtsi"
#include "rk3288-android.dtsi"
/ {
compatible = "rockchip,rk3288-evb-android-rk808-edp", "rockchip,rk3288";
rk808
&i2c0 {
clock-frequency = <400000>;
hym8563: hym8563@51 {
compatible = "haoyu,hym8563";
reg = <0x51>;
interrupt-parent = <&gpio0>;
interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default";
pinctrl-0 = <&rtc_int>;
clock-frequency = <32768>;
#clock-cells = <0>;
clock-output-names = "xin32k_1";
};
rk808: pmic@1b {
compatible = "rockchip,rk808";
reg = <0x1b>;
interrupt-parent = <&gpio0>;
interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pmic_int &global_pwroff>;
rockchip,system-power-controller;
wakeup-source;
#clock-cells = <1>;
clock-output-names = "rk808-clkout1", "rk808-clkout2";
pmu_en_flag = <&gpio7 4 GPIO_ACTIVE_HIGH>;
red_led_gpio = <&gpio8 3 GPIO_ACTIVE_HIGH>;
blue_led_gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>;
extern_drv_gpio=<&gpio7 2 GPIO_ACTIVE_HIGH>;
hub_rst_gpio= <&gpio2 2 GPIO_ACTIVE_HIGH>;
vcc1-supply = <&vcc_sys>;
vcc2-supply = <&vcc_sys>;
vcc3-supply = <&vcc_sys>;
vcc4-supply = <&vcc_sys>;
vcc6-supply = <&vcc_sys>;
vcc8-supply = <&vcc_io>;
vcc9-supply = <&vcc_io>;
vcc12-supply = <&vcc_io>;
vddio-supply = <&vcc_io>;
regulators {
vdd_cpu: DCDC_REG1 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1400000>;
regulator-name = "vdd_arm";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vdd_gpu: DCDC_REG2 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
regulator-name = "vdd_gpu";
regulator-ramp-delay = <6000>;
regulator-state-mem {
regulator-off-in-suspend;
};
};
vcc_ddr: DCDC_REG3 {
regulator-always-on;
regulator-boot-on;
regulator-name = "vcc_ddr";
regulator-state-mem {
regulator-on-in-suspend;
};
};
vcc_io: DCDC_REG4 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc_io";
regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <3300000>;
};
};
vcc_tp: LDO_REG1 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc_tp";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vcca_codec: LDO_REG2 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcca_codec";
regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <3300000>;
};
};
vdd_10: LDO_REG3 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-name = "vdd_10";
regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1000000>;
};
};
vcc_wl: LDO_REG4 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-name = "vcc_wl";
regulator-state-mem {
regulator-on-in-suspend;
};
};
vccio_sd: LDO_REG5 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vccio_sd";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vdd10_lcd: LDO_REG6 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-name = "vdd10_lcd";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vcc_18: LDO_REG7 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-name = "vcc_18";
regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1800000>;
};
};
vcc18_lcd: LDO_REG8 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-name = "vcc18_lcd";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vcc_sd: SWITCH_REG1 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc_sd";
regulator-state-mem {
regulator-off-in-suspend;
};
};
vcc_lcd: SWITCH_REG2 {
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc_lcd";
regulator-state-mem {
regulator-off-in-suspend;
};
};
};
};
};
编译
2.kernel\arch\arm\boot\dts\rk3288-evb.dtsi
vcc_sd1 sdmmc
vcc_sd1: sdmmc-regulator {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_pwr>;
regulator-name = "vcc_sd1";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <100000>;
vin-supply = <&vcc_io>;
};
&sdmmc {
supports-sd;
bus-width = <4>;
cap-mmc-highspeed;
sd-uhs-sdr12;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
cap-sd-highspeed;
card-detect-delay = <200>;
disable-wp; /* wp not hooked up */
num-slots = <1>;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
status = "okay";
vmmc-supply = <&vcc_sd1>;
vqmmc-supply = <&vccio_sd>;
supports-sd;
};