Re: [PATCH 2/2] ARM64: dts: meson-gxm: Add support for Khadas VIM2

From: Jerome Brunet
Date: Tue Sep 19 2017 - 12:11:24 EST

On Tue, 2017-09-19 at 16:53 +0200, Neil Armstrong wrote:
> The Khadas VIM2 is a Single Board Computer, respin of the origin
> Khadas VIM board, using an Amlogic S912 SoC and more server oriented.
>
> It provides the same external connectors and header pinout, plus a SPI
> NOR Flash, a reprogrammable STM8S003 MCU, FPC Connector, Cooling FAN header
> and Pogo Pads Arrays.
>
> Cc: Gouwa <gouwa@xxxxxxxxxxxx>
> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/arm/amlogic.txt | 1 +
> arch/arm64/boot/dts/amlogic/Makefile | 1 +
> .../boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 401
> +++++++++++++++++++++
> 3 files changed, 403 insertions(+)
> create mode 100644 arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
>
> diff --git a/Documentation/devicetree/bindings/arm/amlogic.txt
> b/Documentation/devicetree/bindings/arm/amlogic.txt
> index 4e4bc0b..a445997 100644
> --- a/Documentation/devicetree/bindings/arm/amlogic.txt
> +++ b/Documentation/devicetree/bindings/arm/amlogic.txt
> @@ -71,6 +71,7 @@ Board compatible values (alphabetically, grouped by SoC):
>
> - "amlogic,q200" (Meson gxm s912)
> - "amlogic,q201" (Meson gxm s912)
> + - "khadas,vim2" (Meson gxm s912)
> - "kingnovel,r-box-pro" (Meson gxm S912)
> - "nexbox,a1" (Meson gxm s912)
>
> diff --git a/arch/arm64/boot/dts/amlogic/Makefile
> b/arch/arm64/boot/dts/amlogic/Makefile
> index 7a9f48c..70246e3 100644
> --- a/arch/arm64/boot/dts/amlogic/Makefile
> +++ b/arch/arm64/boot/dts/amlogic/Makefile
> @@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-nexbox-a95x.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p230.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p231.dtb
> +dtb-$(CONFIG_ARCH_MESON) += meson-gxm-khadas-vim2.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxm-nexbox-a1.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q200.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q201.dtb
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> new file mode 100644
> index 0000000..692bb93
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> @@ -0,0 +1,401 @@
> +/*
> + * Copyright (c) 2017 Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx
> >.
> + * Copyright (c) 2017 BayLibre, SAS
> + * Author: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/thermal/thermal.h>
> +
> +#include "meson-gxm.dtsi"
> +
> +/ {
> + compatible = "khadas,vim2", "amlogic,s912", "amlogic,meson-gxm";
> + model = "Khadas VIM2";
> +
> + aliases {
> + serial0 = &uart_AO;
> + serial1 = &uart_A;
> + serial2 = &uart_AO_B;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> + memory@0 {
> + device_type = "memory";
> + reg = <0x0 0x0 0x0 0x80000000>;
> + };
> +
> + adc-keys {
> + compatible = "adc-keys";
> + io-channels = <&saradc 0>;
> + io-channel-names = "buttons";
> + keyup-threshold-microvolt = <1710000>;
> +
> + button-function {
> + label = "Function";
> + linux,code = <KEY_FN>;
> + press-threshold-microvolt = <10000>;
> + };
> + };
> +
> + emmc_pwrseq: emmc-pwrseq {
> + compatible = "mmc-pwrseq-emmc";
> + reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
> + };
> +
> + gpio_fan: gpio-fan {
> + compatible = "gpio-fan";
> + gpios = <&gpio GPIODV_14 GPIO_ACTIVE_HIGH
> + &gpio GPIODV_15 GPIO_ACTIVE_HIGH>;
> + /* Dummy RPM values since fan is optional */
> + gpio-fan,speed-map = <0 0
> + 1 1
> + 2 2
> + 3 3>;
> + cooling-min-level = <0>;
> + cooling-max-level = <3>;
> + #cooling-cells = <2>;
> + };
> +
> + gpio-keys-polled {
> + compatible = "gpio-keys-polled";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + poll-interval = <100>;
> +
> + button@0 {
> + label = "power";
> + linux,code = <KEY_POWER>;
> + gpios = <&gpio_ao GPIOAO_2 GPIO_ACTIVE_LOW>;
> + };
> + };
> +
> + hdmi-connector {
> + compatible = "hdmi-connector";
> + type = "a";
> +
> + port {
> + hdmi_connector_in: endpoint {
> + remote-endpoint = <&hdmi_tx_tmds_out>;
> + };
> + };
> + };
> +
> + pwmleds {
> + compatible = "pwm-leds";
> +
> + power {
> + label = "vim:red:power";
> + pwms = <&pwm_AO_ab 1 7812500 0>;
> + max-brightness = <255>;
> + linux,default-trigger = "default-on";
> + };
> + };
> +
> + sdio_pwrseq: sdio-pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>;
> + clocks = <&wifi32k>;
> + clock-names = "ext_clock";
> + };
> +
> + thermal-zones {
> + cpu-thermal {
> + polling-delay-passive = <250>; /* milliseconds */
> + polling-delay = <1000>; /* milliseconds */
> +
> + thermal-sensors = <&scpi_sensors 0>;
> +
> + trips {
> + cpu_alert0: cpu-alert0 {
> + temperature = <70000>; /*
> millicelsius */
> + hysteresis = <2000>; /* millicelsius
> */
> + type = "active";
> + };
> +
> + cpu_alert1: cpu-alert1 {
> + temperature = <80000>; /*
> millicelsius */
> + hysteresis = <2000>; /* millicelsius
> */
> + type = "passive";
> + };
> + };
> +
> + cooling-maps {
> + map0 {
> + trip = <&cpu_alert0>;
> + cooling-device = <&gpio_fan
> THERMAL_NO_LIMIT 1>;
> + };
> +
> + map1 {
> + trip = <&cpu_alert1>;
> + cooling-device = <&gpio_fan 2
> THERMAL_NO_LIMIT>;
> + };
> +
> + map2 {
> + trip = <&cpu_alert1>;
> + cooling-device =
> + <&cpu0 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>;
> + };
> +
> + map3 {
> + trip = <&cpu_alert1>;
> + cooling-device =
> + <&cpu4 THERMAL_NO_LIMIT
> THERMAL_NO_LIMIT>;
> + };
> + };
> + };
> + };
> +
> + vcc_3v3: regulator-vcc_3v3 {
> + compatible = "regulator-fixed";
> + regulator-name = "VCC_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> +
> + vddio_ao18: regulator-vddio_ao18 {
> + compatible = "regulator-fixed";
> + regulator-name = "VDDIO_AO18";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + vddio_boot: regulator-vddio_boot {
> + compatible = "regulator-fixed";
> + regulator-name = "VDDIO_BOOT";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + vddao_3v3: regulator-vddao_3v3 {
> + compatible = "regulator-fixed";
> + regulator-name = "VDDAO_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> +
> + wifi32k: wifi32k {
> + compatible = "pwm-clock";
> + #clock-cells = <0>;
> + clock-frequency = <32768>;
> + pwms = <&pwm_ef 0 30518 0>; /* PWM_E at 32.768KHz */
> + };
> +};
> +
> +&cec_AO {
> + status = "okay";
> + pinctrl-0 = <&ao_cec_pins>;
> + pinctrl-names = "default";
> + hdmi-phandle = <&hdmi_tx>;
> +};
> +
> +&cpu0 {
> + cooling-min-level = <0>;
> + cooling-max-level = <6>;
> + #cooling-cells = <2>;
> +};
> +
> +&cpu4 {
> + cooling-min-level = <0>;
> + cooling-max-level = <4>;
> + #cooling-cells = <2>;
> +};
> +
> +&ethmac {
> + pinctrl-0 = <&eth_pins>;
> + pinctrl-names = "default";
> +
> + /* Select external PHY by default */
> + phy-handle = <&external_phy>;
> +
> + amlogic,tx-delay-ns = <2>;
> +
> + /* External PHY reset is shared with internal PHY Led signals */
> + snps,reset-gpio = <&gpio GPIOZ_14 0>;
> + snps,reset-delays-us = <0 10000 1000000>;
> + snps,reset-active-low;
> +
> + /* External PHY is in RGMII */
> + phy-mode = "rgmii";
> +
> + status = "okay";
> +};
> +
> +&external_mdio {
> + external_phy: ethernet-phy@1 {
> + compatible = "ethernet-phy-id001c.c916", "ethernet-phy-
> ieee802.3-c22";
> + reg = <0>;
> + max-speed = <1000>;
This entry is not necessary

> + };
> +};
> +
> +&hdmi_tx {
> + status = "okay";
> + pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
> + pinctrl-names = "default";
> +};
> +
> +&hdmi_tx_tmds_port {
> + hdmi_tx_tmds_out: endpoint {
> + remote-endpoint = <&hdmi_connector_in>;
> + };
> +};
> +
> +&i2c_A {
> + status = "okay";
> + pinctrl-0 = <&i2c_a_pins>;
> + pinctrl-names = "default";
> +};
> +
> +&i2c_B {
> + status = "okay";
> + pinctrl-0 = <&i2c_b_pins>;
> + pinctrl-names = "default";
> +
> + rtc: rtc@51 {
> + /* has to be enabled manually when a battery is connected: */
> + status = "disabled";
> + compatible = "haoyu,hym8563";
> + reg = <0x51>;
> + #clock-cells = <0>;
> + clock-frequency = <32768>;
> + clock-output-names = "xin32k";
> + };
> +};
> +
> +&ir {
> + status = "okay";
> + pinctrl-0 = <&remote_input_ao_pins>;
> + pinctrl-names = "default";
> + linux,rc-map-name = "rc-geekbox";
> +};
> +
> +&pwm_AO_ab {
> + status = "okay";
> + pinctrl-0 = <&pwm_ao_a_3_pins>, <&pwm_ao_b_pins>;
> + pinctrl-names = "default";
> + clocks = <&clkc CLKID_FCLK_DIV4>;
> + clock-names = "clkin0";
> +};
> +
> +&pwm_ef {
> + status = "okay";
> + pinctrl-0 = <&pwm_e_pins>, <&pwm_f_clk_pins>;
> + pinctrl-names = "default";
> + clocks = <&clkc CLKID_FCLK_DIV4>;
> + clock-names = "clkin0";
> +};
> +
> +&sd_emmc_a {
> + status = "okay";
> + pinctrl-0 = <&sdio_pins>;
> + pinctrl-names = "default";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + bus-width = <4>;
> + cap-sd-highspeed;
> + max-frequency = <100000000>;
> +
> + non-removable;
> + disable-wp;
> +
> + mmc-pwrseq = <&sdio_pwrseq>;
> +
> + vmmc-supply = <&vddao_3v3>;
> + vqmmc-supply = <&vddio_boot>;
> +
> + brcmf: wifi@1 {
> + reg = <1>;
> + compatible = "brcm,bcm4329-fmac";
> + };
> +};
> +
> +/* SD card */
> +&sd_emmc_b {
> + status = "okay";
> + pinctrl-0 = <&sdcard_pins>;
> + pinctrl-names = "default";
> +
> + bus-width = <4>;
> + cap-sd-highspeed;
> + max-frequency = <100000000>;
> + disable-wp;
> +
> + cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
> + cd-inverted;
> +
> + vmmc-supply = <&vddao_3v3>;
> + vqmmc-supply = <&vddio_boot>;
> +};
> +
> +/* eMMC */
> +&sd_emmc_c {
> + status = "okay";
> + pinctrl-0 = <&emmc_pins>, <&emmc_ds_pins>;
> + pinctrl-names = "default";
> +
> + bus-width = <8>;
> + cap-sd-highspeed;
This entry is not necessary

> + cap-mmc-highspeed;
> + max-frequency = <200000000>;
> + non-removable;
> + disable-wp;
> + mmc-ddr-1_8v;
> + mmc-hs200-1_8v;
> +
> + mmc-pwrseq = <&emmc_pwrseq>;
> + vmmc-supply = <&vcc_3v3>;
> + vqmmc-supply = <&vddio_boot>;
> +};
> +
> +/*
> + * EMMC_DS pin is shared between SPI NOR CS and eMMC Data Strobe
> + * Remove emmc_ds_pins from sd_emmc_c pinctrl-0 then spifc can be enabled
> + */
> +&spifc {
> + status = "disabled";
> + pinctrl-0 = <&nor_pins>;
> + pinctrl-names = "default";
> +
> + w25q32: spi-flash@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "winbond,w25q16", "jedec,spi-nor";
> + reg = <0>;
> + spi-max-frequency = <3000000>;
> + };
> +};
> +
> +/* This one is connected to the Bluetooth module */
> +&uart_A {
> + status = "okay";
> + pinctrl-0 = <&uart_a_pins>;
> + pinctrl-names = "default";
> +};
> +
> +/* This is brought out on the Linux_RX (18) and Linux_TX (19) pins: */
> +&uart_AO {
> + status = "okay";
> + pinctrl-0 = <&uart_ao_a_pins>;
> + pinctrl-names = "default";
> +};
> +
> +/* This is brought out on the UART_RX_AO_B (15) and UART_TX_AO_B (16) pins:
> */
> +&uart_AO_B {
> + status = "okay";
> + pinctrl-0 = <&uart_ao_b_pins>;
> + pinctrl-names = "default";
> +};
> +
> +&saradc {
> + status = "okay";
> + vref-supply = <&vddio_ao18>;
> +};