ARM: dts: meson8b: mxq: improve support for the TRONFY MXQ S805

The TRONFY MXQ comes with either 1GB or 2GB RAM.

Both variants share (like most boards based on Amlogic reference
designs):
- 10/100 PHY (IC Plus IP101GR) with GPIOH_4 being the reset line and
  GPIOH_3 the interrupt line
- SD card slot with the card detection GPIO at CARD_6
- VCCK is generated by PWM_C with a period of 1148ns and XTAL as input
  clock
- USB OTG exposed on one of the USB-A connectors
- 4-port USB hub with 3 ports exposed to the outside

There seem the multiple board revision out there according to various
forum posts:
- storage: eMMC or NAND flash
- wifi: Ampak AP6210 or Realtek 8189

Add support for the following functionality:
- SoC temperature (hwmon)
- changing the CPU voltage
- Ethernet connectivity
- SD card
- USB

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: hexdump <hexdump0815@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/arch/arm/boot/dts/meson8b-mxq.dts b/arch/arm/boot/dts/meson8b-mxq.dts
index 08ddd7f..07f1cc5 100644 (file)
--- a/arch/arm/boot/dts/meson8b-mxq.dts
+++ b/arch/arm/boot/dts/meson8b-mxq.dts
@@ -45,6 +45,9 @@
  */
 
 /dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+
 #include "meson8b.dtsi"
 
 / {
@@ -63,6 +66,126 @@
                device_type = "memory";
                reg = <0x40000000 0x40000000>;
        };
+
+       iio-hwmon {
+               compatible = "iio-hwmon";
+               io-channels = <&saradc 8>;
+       };
+
+       vcck: regulator-vcck {
+               compatible = "pwm-regulator";
+
+               regulator-name = "VCCK";
+               regulator-min-microvolt = <860000>;
+               regulator-max-microvolt = <1140000>;
+
+               pwms = <&pwm_cd 0 1148 0>;
+               pwm-dutycycle-range = <100 0>;
+
+               regulator-boot-on;
+               regulator-always-on;
+       };
+
+       vcc_1v8: regulator-vcc1v8 {
+               compatible = "regulator-fixed";
+
+               regulator-name = "VCC1V8";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+
+               vin-supply = <&vcc_3v3>;
+       };
+
+       vcc_3v3: regulator-vcc3v3 {
+               compatible = "regulator-fixed";
+
+               regulator-name = "VCC3V3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               vin-supply = <&vcc_5v>;
+       };
+
+       vcc_5v: regulator-vcc5v {
+               compatible = "regulator-fixed";
+
+               regulator-name = "VCC5V";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+
+               regulator-boot-on;
+               regulator-always-on;
+       };
+};
+
+&cpu0 {
+       cpu-supply = <&vcck>;
+};
+
+&ethmac {
+       status = "okay";
+
+       pinctrl-0 = <&eth_rmii_pins>;
+       pinctrl-names = "default";
+
+       phy-handle = <&eth_phy0>;
+       phy-mode = "rmii";
+
+       snps,reset-gpio = <&gpio GPIOH_4 0>;
+       snps,reset-delays-us = <0 10000 1000000>;
+       snps,reset-active-low;
+
+       mdio {
+               compatible = "snps,dwmac-mdio";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               eth_phy0: ethernet-phy@0 {
+                       /* IC Plus IP101A/G (0x02430c54) */
+                       reg = <0>;
+                       icplus,select-interrupt;
+                       interrupt-parent = <&gpio_intc>;
+                       /* GPIOH_3 */
+                       interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
+               };
+       };
+};
+
+&saradc {
+       status = "okay";
+       vref-supply = <&vcc_1v8>;
+};
+
+&sdio {
+       status = "okay";
+
+       pinctrl-0 = <&sd_b_pins>;
+       pinctrl-names = "default";
+
+       /* SD card */
+       sd_card_slot: slot@1 {
+               compatible = "mmc-slot";
+               reg = <1>;
+               status = "okay";
+
+               bus-width = <4>;
+               no-sdio;
+               cap-mmc-highspeed;
+               cap-sd-highspeed;
+               disable-wp;
+
+               cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_LOW>;
+
+               vmmc-supply = <&vcc_3v3>;
+       };
+};
+
+&pwm_cd {
+       status = "okay";
+       pinctrl-0 = <&pwm_c1_pins>;
+       pinctrl-names = "default";
+       clocks = <&clkc CLKID_XTAL>;
+       clock-names = "clkin0";
 };
 
 &uart_AO {
@@ -70,3 +193,19 @@
        pinctrl-0 = <&uart_ao_a_pins>;
        pinctrl-names = "default";
 };
+
+&usb0 {
+       status = "okay";
+};
+
+&usb0_phy {
+       status = "okay";
+};
+
+&usb1 {
+       status = "okay";
+};
+
+&usb1_phy {
+       status = "okay";
+};