[linux-sunxi][PATCH] ARM: sun7i: dt: Add new Olimex A20 EVB device

[Maxime Ripard]

Hi,

On Wed, Aug 19, 2015 at 06:43:16PM +0200, codekipper at gmail.com wrote:
> From: Marcus Cooper <codekipper at gmail.com>
> 
> The A20-SOM-EVB is a reference design of a 2-layer board for the
> A20-SOM.
> It expands the features of A20-SOM by adding VGA connector, HDMI
> connector, audio In/Out, LCD connector, 2 Mpix camera, gigabit
> Ethernet, SATA, USB-OTG and 2 USB hosts.
> 
> This patch adds basic support for the device
> https://www.olimex.com/Products/SOM/A20/A20-SOM-EVB/
> 
> More information on the SOM can be found here
> http://linux-sunxi.org/Olimex_A20-SOM.
> 
> Signed-off-by: Marcus Cooper <codekipper at gmail.com>

Is there any other SOM planned that could work with that baseboard? Or
any other baseboard for that SOM?

> ---
>  arch/arm/boot/dts/Makefile                    |   1 +
>  arch/arm/boot/dts/sun7i-a20-olinuxino-evb.dts | 233 ++++++++++++++++++++++++++
>  2 files changed, 234 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun7i-a20-olinuxino-evb.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 6d7cec1..fdbda9b 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -613,6 +613,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
>  	sun7i-a20-olinuxino-lime.dtb \
>  	sun7i-a20-olinuxino-lime2.dtb \
>  	sun7i-a20-olinuxino-micro.dtb \
> +	sun7i-a20-olinuxino-evb.dtb \
>  	sun7i-a20-orangepi.dtb \
>  	sun7i-a20-orangepi-mini.dtb \
>  	sun7i-a20-pcduino3.dtb \
> diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-evb.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-evb.dts
> new file mode 100644
> index 0000000..a0071fa
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-evb.dts
> @@ -0,0 +1,233 @@
> +/*
> + * Copyright 2015 - Marcus Cooper <codekipper at gmail.com>
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + *  a) This file is free software; you can redistribute it and/or
> + *     modify it under the terms of the GNU General Public License as
> + *     published by the Free Software Foundation; either version 2 of the
> + *     License, or (at your option) any later version.
> + *
> + *     This file is distributed in the hope that it will be useful,
> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + *     GNU General Public License for more details.
> + *
> + * Or, alternatively,
> + *
> + *  b) Permission is hereby granted, free of charge, to any person
> + *     obtaining a copy of this software and associated documentation
> + *     files (the "Software"), to deal in the Software without
> + *     restriction, including without limitation the rights to use,
> + *     copy, modify, merge, publish, distribute, sublicense, and/or
> + *     sell copies of the Software, and to permit persons to whom the
> + *     Software is furnished to do so, subject to the following
> + *     conditions:
> + *
> + *     The above copyright notice and this permission notice shall be
> + *     included in all copies or substantial portions of the Software.
> + *
> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *     OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +/dts-v1/;
> +#include "sun7i-a20.dtsi"
> +#include "sunxi-common-regulators.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/pinctrl/sun4i-a10.h>
> +
> +/ {
> +	model = "Olimex A20-OLinuXino-EVB";
> +	compatible = "olimex,a20-olinuxino-evb", "allwinner,sun7i-a20";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&led_pins_olinuxinoevb>;
> +
> +		green {
> +			label = "a20-olinuxino-evb:green:usr";
> +			gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>;
> +			default-state = "on";
> +		};
> +	};
> +
> +	reg_axp_ipsout: axp_ipsout {
> +		compatible = "regulator-fixed";
> +		regulator-name = "axp-ipsout";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-always-on;
> +	};
> +};
> +
> +&ahci {
> +	target-supply = <&reg_ahci_5v>;
> +	status = "okay";
> +};
> +
> +&ehci0 {
> +	status = "okay";
> +};
> +
> +&ehci1 {
> +	status = "okay";
> +};
> +
> +&gmac {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&gmac_pins_rgmii_a>;
> +	phy = <&phy1>;
> +	phy-mode = "rgmii";
> +	status = "okay";
> +
> +	phy1: ethernet-phy at 1 {
> +		reg = <1>;
> +	};
> +};
> +
> +&i2c0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c0_pins_a>;
> +	status = "okay";
> +
> +	axp209: pmic at 34 {
> +		compatible = "x-powers,axp209";
> +		reg = <0x34>;
> +		interrupt-parent = <&nmi_intc>;
> +		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +
> +		interrupt-controller;
> +		#interrupt-cells = <1>;
> +
> +		acin-supply = <&reg_axp_ipsout>;
> +		vin2-supply = <&reg_axp_ipsout>;
> +		vin3-supply = <&reg_axp_ipsout>;
> +		ldo24in-supply = <&reg_axp_ipsout>;
> +		ldo3in-supply = <&reg_axp_ipsout>;

Please use the axp209 dtsi.

> +
> +		regulators {
> +			vdd_rtc: ldo1 {
> +				regulator-min-microvolt = <1300000>;
> +				regulator-max-microvolt = <1300000>;
> +				regulator-always-on;
> +			};
> +
> +			avcc: ldo2 {
> +				regulator-min-microvolt = <1800000>;
> +				regulator-max-microvolt = <3300000>;
> +				regulator-always-on;
> +			};
> +
> +			vcc_csi0: ldo3 {
> +				regulator-min-microvolt = <700000>;
> +				regulator-max-microvolt = <3500000>;
> +				regulator-always-on;
> +			};
> +
> +			vcc_csi1: ldo4 {
> +				regulator-min-microvolt = <1250000>;
> +				regulator-max-microvolt = <3300000>;
> +				regulator-always-on;
> +			};

the csi regulators are always-on too? What function do they provide?

> +			vdd_cpu: dcdc2 {
> +				regulator-min-microvolt = <700000>;
> +				regulator-max-microvolt = <2275000>;

This is way outside of the CPU operating range. Are you sure of your
constraints?

> +				regulator-always-on;
> +			};
> +
> +			vdd_int: dcdc3 {
> +				regulator-min-microvolt = <700000>;
> +				regulator-max-microvolt = <3500000>;
> +				regulator-always-on;
> +			};
> +		};
> +	};
> +};
> +
> +&i2c1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c1_pins_a>;
> +	status = "okay";
> +};
> +
> +&mmc0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_reference_design>;
> +	vmmc-supply = <&reg_vcc3v3>;
> +	bus-width = <4>;
> +	cd-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
> +	cd-inverted;
> +	status = "okay";
> +};
> +
> +&ohci0 {
> +	status = "okay";
> +};
> +
> +&ohci1 {
> +	status = "okay";
> +};
> +
> +&pio {
> +	ahci_pwr_pin_olinuxinoevb: ahci_pwr_pin at 1 {
> +		allwinner,pins = "PC3";
> +		allwinner,function = "gpio_out";
> +		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> +		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> +	};
> +
> +	led_pins_olinuxinoevb: led_pins at 0 {
> +		allwinner,pins = "PH2";
> +		allwinner,function = "gpio_out";
> +		allwinner,drive = <SUN4I_PINCTRL_20_MA>;
> +		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> +	};
> +};
> +
> +&reg_ahci_5v {
> +	pinctrl-0 = <&ahci_pwr_pin_olinuxinoevb>;
> +	gpio = <&pio 2 3 GPIO_ACTIVE_HIGH>;
> +	status = "okay";
> +};
> +
> +&reg_usb1_vbus {
> +	status = "okay";
> +};
> +
> +&reg_usb2_vbus {
> +	status = "okay";
> +};
> +
> +&uart0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&uart0_pins_a>;
> +	status = "okay";
> +};
> +
> +&usbphy {
> +	usb1_vbus-supply = <&reg_usb1_vbus>;
> +	usb2_vbus-supply = <&reg_usb2_vbus>;
> +	status = "okay";
> +};
> -- 
> 2.5.0
> 

Thanks,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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