forked from Minki/linux
2c31d9498c
This enables basic SD and eMMC support. Things are not yet running at the fastest speed and we don't have the regulators specified, but we can at least use the eMMC and SD cards now. A note: * Though MMC DDR50 mode is partially supported in the dw_mmc rk3288-specific code in Addy's patch, Addy's patch doesn't add tuning support. That means DDR50 mode is not reliable. From the 3288 TRM: "Tuning is required for other speed modes-such as DDR50-even though the output delay from the card is less than one cycle." Thus, we don't enable MMC DDR50 mode in this patch. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
121 lines
2.2 KiB
Plaintext
121 lines
2.2 KiB
Plaintext
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "rk3288.dtsi"
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/ {
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memory {
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reg = <0x0 0x80000000>;
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};
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gpio-keys {
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compatible = "gpio-keys";
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#address-cells = <1>;
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#size-cells = <0>;
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autorepeat;
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pinctrl-names = "default";
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pinctrl-0 = <&pwrbtn>;
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button@0 {
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gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
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linux,code = <116>;
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label = "GPIO Key Power";
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linux,input-type = <1>;
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gpio-key,wakeup = <1>;
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debounce-interval = <100>;
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};
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};
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/* This turns on USB vbus for both host0 (ehci) and host1 (dwc2) */
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vcc_host: vcc-host-regulator {
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compatible = "regulator-fixed";
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enable-active-high;
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gpio = <&gpio0 14 GPIO_ACTIVE_HIGH>;
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pinctrl-names = "default";
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pinctrl-0 = <&host_vbus_drv>;
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regulator-name = "vcc_host";
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regulator-always-on;
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regulator-boot-on;
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};
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};
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&emmc {
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broken-cd;
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bus-width = <8>;
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cap-mmc-highspeed;
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disable-wp;
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non-removable;
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num-slots = <1>;
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pinctrl-names = "default";
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pinctrl-0 = <&emmc_clk &emmc_cmd &emmc_pwr &emmc_bus8>;
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status = "okay";
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};
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&sdmmc {
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bus-width = <4>;
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cap-mmc-highspeed;
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cap-sd-highspeed;
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card-detect-delay = <200>;
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disable-wp; /* wp not hooked up */
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num-slots = <1>;
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pinctrl-names = "default";
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pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
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status = "okay";
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};
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&i2c0 {
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status = "okay";
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};
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&wdt {
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status = "okay";
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};
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&uart0 {
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status = "okay";
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};
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&uart1 {
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status = "okay";
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};
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&uart2 {
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status = "okay";
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};
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&uart3 {
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status = "okay";
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};
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&uart4 {
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status = "okay";
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};
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&pinctrl {
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buttons {
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pwrbtn: pwrbtn {
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rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_up>;
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};
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};
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usb {
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host_vbus_drv: host-vbus-drv {
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rockchip,pins = <0 14 RK_FUNC_GPIO &pcfg_pull_none>;
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};
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};
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};
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&usb_host0_ehci {
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status = "okay";
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};
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