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

Tue Sep 19 09:11:16 PDT 2017

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 at szwesion.com>
> Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
> ---
>  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 at googlemail.com
> >.
> + * Copyright (c) 2017 BayLibre, SAS
> + * Author: Neil Armstrong <narmstrong at baylibre.com>
> + *
> + * 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 at 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 at 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 at 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 at 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 at 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 at 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>;
> +};