Re: [PATCH RFC 2/2] arm64: allwinner: a64: Add Brava Keller initial support

From: Maxime Ripard
Date: Fri Dec 01 2017 - 02:54:45 EST


On Fri, Dec 01, 2017 at 12:12:14AM +0530, Jagan Teki wrote:
> Brava Keller is A64 based IoT device, which support
> - Allwinner A64 Cortex-A53
> - AXP803 PMIC
> - 1GB DDR3 RAM
> - 8GB eMMC
> - Mali-400MP2 GPU
> - AP6330 Wifi/BLE
> - Camera OV5640
> - USB Host and OTG
>
> Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
> ---
> Note: Need to test it on hardware
>
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../boot/dts/allwinner/sun50i-a64-brava-keller.dts | 244 +++++++++++++++++++++
> 2 files changed, 245 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> index f505227..af80ca0 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -1,5 +1,6 @@
> # SPDX-License-Identifier: GPL-2.0
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-brava-keller.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
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts
> new file mode 100644
> index 0000000..f5303a3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts
> @@ -0,0 +1,244 @@
> +/*
> + * Copyright (C) 2017 Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
> + *
> + * 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 = "Brava Keller";
> + compatible = "brava,brava-keller", "allwinner,sun50i-a64";
> +
> + aliases {
> + serial2 = &uart2;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };

Same comment than on U-Boot.

> + wifi_pwrseq: wifi_pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + pinctrl-names = "default";
> + reset-gpios = <&pio 0 2 GPIO_ACTIVE_LOW>; /* WL-PMU-EN: PL2 */
> + post-power-on-delay-ms = <200>;
> + };
> +};
> +
> +&ehci0 {
> + status = "okay";
> +};
> +
> +&ehci1 {
> + status = "okay";
> +};
> +
> +&mmc1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc1_pins>;
> + vmmc-supply = <&reg_dcdc1>;
> + vqmmc-supply = <&reg_dldo4>;
> + mmc-pwrseq = <&wifi_pwrseq>;
> + bus-width = <4>;
> + non-removable;
> + status = "okay";
> +
> + brcmf: wifi@1 {
> + reg = <1>;
> + compatible = "brcm,bcm4329-fmac";
> + interrupt-parent = <&r_pio>;
> + interrupts = <0 7 IRQ_TYPE_LEVEL_LOW>; /* WL-WAKE-AP: PL3 */
> + interrupt-names = "host-wake";
> + };
> +};
> +
> +&mmc2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc2_pins>;
> + vmmc-supply = <&reg_dcdc1>;

You probably have a vqmmc tosetup too.

> + bus-width = <8>;
> + non-removable;
> + cap-mmc-hw-reset;
> + status = "okay";
> +};
> +
> +&ohci0 {
> + status = "okay";
> +};
> +
> +&ohci1 {
> + 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>;
> + };
> +};
> +
> +#include "axp803.dtsi"
> +
> +&reg_aldo1 {
> + regulator-always-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "avdd-csi";
> +};
> +
> +&reg_aldo2 {
> + regulator-always-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + 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 = <1040000>;
> + regulator-max-microvolt = <1300000>;
> + regulator-name = "vdd-cpux";
> +};
> +
> +/* DCDC3 is polyphased with DCDC2 */
> +
> +&reg_dcdc5 {
> + regulator-always-on;
> + regulator-min-microvolt = <1500000>;
> + regulator-max-microvolt = <1500000>;
> + regulator-name = "vcc-dram";
> +};
> +
> +&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-dsi-sensor";
> +};
> +
> +&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-gen";
> +};
> +
> +&reg_dldo4 {
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-wifi-io";
> +};
> +
> +&reg_eldo1 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-name = "cpvdd";
> +};
> +
> +&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";
> +};
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
> + status = "okay";
> +};

I guess this is a BT device, please use the serdev binding here.

> +&uart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart2_pins>;
> + status = "okay";
> +};
> +
> +&usbphy {
> + status = "okay";

And please tie in the regulators here.

> +};
> --
> 2.7.4
>

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

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