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

Chen-Yu Tsai wens at csie.org
Mon Nov 27 20:12:11 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

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>
---

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.

Do we need different board compatible strings? FWIW the soc compatible
string already encodes the soc variant, and the DRAM stuff is handled
by the bootloader. The filename also has the SoC family and chip name.
The displayed board model also has the SoC variant included. The board
itself is named "ALL-H3-CC".

I'm asking as we have the same issue with the Bananapi M2+ [2], where
they've released new variants with different SoCs and DRAM capacities
using the same board. Not sure if they are commercially available though.

Last, the LED polarity is wrong. This is due to the EMAC driver not
following the DT binding and looking for the "allwinner,leds-active-low"
under the PHY node, instead of the EMAC node. I've notified Corentin of
this issue.

[1] https://www.kickstarter.com/projects/librecomputer/libre-computer-board-tritium-sbc-linux-android-7-n
[2] http://www.banana-pi.org/m2plus.html
---
 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..6f544e007f71
--- /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", "allwinner,sun8i-h3";
+
+	aliases {
+		ethernet0 = &emac;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		pwr_led {
+			label = "librecomputer:pwr";
+			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
+			default-state = "on";
+		};
+
+		status_led {
+			label = "librecomputer:status";
+			gpios = <&pio 0 7 GPIO_ACTIVE_HIGH>; /* PA7 */
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		recovery {
+			label = "recovery";
+			linux,code = <BTN_0>;
+			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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