[PATCH v2] ARM: dts: sun8i: h3: Add dts file for Libre Computer Board ALL-H3-CC H3 ver.

Chen-Yu Tsai wens at csie.org
Mon Dec 4 22:06:15 PST 2017 

The Libre Computer Board ALL-H3-CC from Libre Technology is a Raspberry
Pi B+ form factor single board computer based on the Allwinner H3 SoC.
The board has 1GB DDR3 SDRAM, provided by 4 2Gb chips. The mounting holes
and connectors are in the exact same position as on the Raspberry Pi B+.

Raspberry Pi B+ like peripherals supported on this board include:

  - Power input through micro-USB connector (without USB OTG)
  - Native 100 Mbps ethernet using the internal PHY, as opposed to
    USB-based on the RPi
  - 4x USB 2.0 host ports, directly connected to the SoC, as opposed to
    being connected through a USB 2.0 hub on the RPi
  - TV and audio output on a 3.5mm TRRS jack
  - HDMI output
  - Micro-SD card slot
  - Standard RPi B+ GPIO header, with the standard peripherals routed to
    the same pins.

    * 5V, 3.3V power, and ground
    * I2C0 on the H3 is routed to I2C1 pins on the RPi header
    * I2C1 on the H3 is routed to I2C0 pins on the RPi header
    * UART1 on the H3 is routed to UART0 pins on the RPi header
    * SPI0 on the H3 is routed to SPI0 pins on the RPi header,
      with GPIO pin PA17 replacing the missing Chip Select 1
    * I2S1 on the H3 is routed to PCM pins on the RPi header

  - Additional peripherals from the H3 are available on different pins.
    These include I2S0, JTAG, PWM1, SPDIF, SPI1, and UART3

In addition, there are a number of new features:

  - Console UART header
  - Consumer IR receiver
  - Camera interface (not compatible with RPi)
  - Onboard microphone
  - eMMC expansion module port
  - Heatsink mounting holes
  - Power button

The power button requires corresponding software for the embedded
coprocessor to properly function.

This patch adds a dts file for this board that enables all "onboard"
peripherals currently supported. This means no display or camera
support.

Signed-off-by: Chen-Yu Tsai <wens at csie.org>
---

Changes since v1:

  - Changed board compatible string
  - Added LED color to LED labels
  - Changed button label and key event to power button
  - Added description of power button to commit message

There are two other variants [1] of this board, with different SoCs and
DRAM configuration. But the board remains the same, thanks to the SoCs
being pin compatible.

The EMAC/EPHY LED polarity driver issue has been fixed in v4.15-rc2. But
there was discussion to move this property under the PHY node instead.

[1] https://www.kickstarter.com/projects/librecomputer/libre-computer-board-tritium-sbc-linux-android-7-n
---
 arch/arm/boot/dts/Makefile                         |   1 +
 arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts | 196 +++++++++++++++++++++
 2 files changed, 197 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 3c139c63098f..aa68f719692f 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -953,6 +953,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-h2-plus-orangepi-zero.dtb \
 	sun8i-h3-bananapi-m2-plus.dtb \
 	sun8i-h3-beelink-x2.dtb \
+	sun8i-h3-libretech-all-h3-cc.dtb \
 	sun8i-h3-nanopi-m1.dtb	\
 	sun8i-h3-nanopi-m1-plus.dtb \
 	sun8i-h3-nanopi-neo.dtb \
diff --git a/arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts b/arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts
new file mode 100644
index 000000000000..d406571a0dd6
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2017 Chen-Yu Tsai <wens at csie.org>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+/dts-v1/;
+#include "sun8i-h3.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Libre Computer Board ALL-H3-CC H3";
+	compatible = "libretech,all-h3-cc-h3", "allwinner,sun8i-h3";
+
+	aliases {
+		ethernet0 = &emac;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		pwr_led {
+			label = "librecomputer:green:pwr";
+			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
+			default-state = "on";
+		};
+
+		status_led {
+			label = "librecomputer:blue:status";
+			gpios = <&pio 0 7 GPIO_ACTIVE_HIGH>; /* PA7 */
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		power {
+			label = "power";
+			linux,code = <KEY_POWER>;
+			gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
+		};
+	};
+
+	reg_vcc1v2: vcc1v2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc1v2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&reg_vcc5v0>;
+		gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
+		enable-active-high;
+	};
+
+	reg_vcc3v3: vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&reg_vcc5v0>;
+	};
+
+	/* This represents the board's 5V input */
+	reg_vcc5v0: vcc5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	reg_vcc_dram: vcc-dram {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-dram";
+		regulator-min-microvolt = <1500000>;
+		regulator-max-microvolt = <1500000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&reg_vcc5v0>;
+		gpio = <&r_pio 0 9 GPIO_ACTIVE_HIGH>; /* PL9 */
+		enable-active-high;
+	};
+
+	reg_vcc_io: vcc-io {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-io";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&reg_vcc3v3>;
+		gpio = <&r_pio 0 5 GPIO_ACTIVE_LOW>; /* PL5 */
+	};
+
+	reg_vdd_cpux: vdd-cpux {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd-cpux";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&reg_vcc5v0>;
+		gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
+		enable-active-high;
+	};
+};
+
+&codec {
+	allwinner,audio-routing =
+		"Line Out", "LINEOUT",
+		"MIC1", "Mic",
+		"Mic",  "MBIAS";
+	status = "okay";
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&ehci2 {
+	status = "okay";
+};
+
+&ehci3 {
+	status = "okay";
+};
+
+&emac {
+	phy-handle = <&int_mii_phy>;
+	phy-mode = "mii";
+	allwinner,leds-active-low;
+	status = "okay";
+};
+
+&ir {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ir_pins_a>;
+	status = "okay";
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_a>;
+	vmmc-supply = <&reg_vcc_io>;
+	bus-width = <4>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
+	cd-inverted;
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&ohci1 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&ohci3 {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usbphy {
+	/* VBUS on USB ports are always on */
+	usb0_vbus-supply = <&reg_vcc5v0>;
+	usb1_vbus-supply = <&reg_vcc5v0>;
+	usb2_vbus-supply = <&reg_vcc5v0>;
+	usb3_vbus-supply = <&reg_vcc5v0>;
+	status = "okay";
+};
-- 
2.15.0

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