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SubjectRe: [linux-sunxi] [PATCH v2] arm64: allwinner: a64: Add A64-OLinuXino initial support
Hi,

On Sun, Aug 13, 2017 at 1:54 AM, Jagan Teki <jagannadh.teki@gmail.com> wrote:
> From: Jagan Teki <jagan@amarulasolutions.com>
>
> OLimex A64-OLinuXino is an open-source hardware board
> using the Allwinner A64 SOC.
>
> OLimex A64-OLinuXino has
> - A64 Quad-core Cortex-A53 64bit
> - 1GB or 2GB RAM DDR3L @ 672Mhz
> - microSD slot and 4/8/16GB eMMC
> - Debug TTL UART
> - HDMI
> - LCD
> - IR receiver
> - 5V DC power supply

Have you tried out Ethernet?

>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> Changes for v2:
> - Tested on board
> - Added AXP803 regulator
>
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../boot/dts/allwinner/sun50i-a64-olinuxino.dts | 221 +++++++++++++++++++++
> 2 files changed, 222 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> index c997b5c..19c3fbd 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -1,5 +1,6 @@
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-nanopi-a64.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-olinuxino.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-orangepi-win.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-plus.dtb sun50i-a64-pine64.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-sopine-baseboard.dtb
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
> new file mode 100644
> index 0000000..0b9e742
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
> @@ -0,0 +1,221 @@
> +/*
> + * Copyright (C) 2017 Jagan Teki <jteki@openedev.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 library 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 library 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 "sun50i-a64.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +
> +/ {
> + model = "Olimex A64-Olinuxino";
> + compatible = "olimex,a64-olinuxino", "allwinner,sun50i-a64";
> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> + reg_vcc1v8: vcc1v8 {
> + compatible = "regulator-fixed";
> + regulator-name = "vcc1v8";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +};
> +
> +&i2c1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c1_pins>;
> + status = "okay";

Please add a note saying what this is for. There should be a good reason
to enable a non or only semi discoverable bus.

> +};
> +
> +&i2c1_pins {
> + bias-pull-up;
> +};
> +
> +&mmc0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc0_pins>;
> + vmmc-supply = <&reg_dcdc1>;
> + cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
> + cd-inverted;
> + disable-wp;
> + bus-width = <4>;
> + status = "okay";
> +};
> +
> +&r_rsb {
> + status = "okay";
> +
> + axp803: pmic@3a3 {
> + compatible = "x-powers,axp803";
> + reg = <0x3a3>;
> + interrupt-parent = <&r_intc>;
> + interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> + };
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_pins_a>;
> + status = "okay";
> +};
> +
> +#include "axp803.dtsi"
> +
> +&reg_aldo1 {
> + regulator-always-on;
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + regulator-name = "vcc-pe";
> +};
> +
> +&reg_aldo2 {
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;

Schematic says 1.8V?

> + regulator-name = "vcc-pl";
> +};
> +
> +&reg_aldo3 {
> + regulator-always-on;
> + regulator-min-microvolt = <3000000>;
> + regulator-max-microvolt = <3000000>;
> + regulator-name = "vcc-pll-avcc";
> +};
> +
> +&reg_dcdc1 {
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-3v3";
> +};
> +
> +&reg_dcdc2 {
> + regulator-always-on;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1100000>;

The SoC has a wider range than a fixed voltage for the CPUs.

> + regulator-name = "vddfb-cpux";
> +};
> +
> +&reg_dcdc3 {
> + regulator-always-on;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1100000>;
> + regulator-name = "vddfb-cpuxx";
> +};

It looks like DCDC3 is tied to DCDC2 in poly-phase mode? Please check.

> +
> +&reg_dcdc5 {
> + regulator-always-on;
> + regulator-min-microvolt = <1500000>;
> + regulator-max-microvolt = <1500000>;
> + regulator-name = "vcc-ddr3";
> +};
> +
> +&reg_dcdc6 {
> + regulator-always-on;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1100000>;
> + regulator-name = "vdd-sys";
> +};
> +
> +&reg_dldo1 {
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-hdmi";
> +};
> +
> +&reg_dldo2 {
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-mipi";
> +};
> +
> +&reg_dldo3 {
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + regulator-name = "vcc-avdd-csi";
> +};
> +
> +&reg_dldo4 {
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-wifiio";

"wifi-io" is more readable.

Regards
ChenYu

> +};
> +
> +&reg_eldo1 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-name = "cpvdd";
> +};
> +
> +&reg_eldo2 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-name = "vcc-dvdd-csi";
> +};
> +
> +&reg_fldo1 {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + regulator-name = "vcc-1v2-hsic";
> +};
> +
> +/*
> + * The A64 chip cannot work without this regulator off, although
> + * it seems to be only driving the AR100 core.
> + * Maybe we don't still know well about CPUs domain.
> + */
> +&reg_fldo2 {
> + regulator-always-on;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1100000>;
> + regulator-name = "vdd-cpus";
> +};
> +
> +&reg_rtc_ldo {
> + regulator-name = "vcc-rtc";
> +};
> --
> 2.7.4
>
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