Re: [PATCH v5] arm64: allwinner: h5: add support for NanoPi NEO Plus2

From: Maxime Ripard
Date: Thu Aug 31 2017 - 10:59:19 EST

Hi,

On Wed, Aug 30, 2017 at 02:50:57PM +0200, Antony Antony wrote:
> Add initial DT support for NanoPi NEO Plus2 by FriendlyARM
> Allwinner quad core H5 Cortex A53 with an ARM Mali-450MP GPU
> 1 GB DDR3 RAM
> 8GB eMMC flash (Samsung KLM8G1WEPD-B031)
> micro SD card slot
> Gigabit Ethernet (external RTL8211E-VB-CG chip)
> 802.11 b/g/n WiFi, Bluetooth 4.0 (Ampak AP6212A module)
> 2x USB 2.0 host ports & 2x USB via headers

This indendation is weird

> The DTS is based on OrangePi PC 2, sun50i-h5-orangepi-pc2
> Added dwmac-sun8i Gigabit Ethernet support based on
> Nano Pi Neo2 DT and the schematics.

And that's outdated.

> Signed-off-by: Antony Antony <antony@xxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts | 262 +++++++++++++++++++++
> 2 files changed, 263 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
>
> ---
> Changes
> v1 -> v2
> add wifi power controller, mmc1, mmc2
> remove reg_usb0_vbus
> v2 -> v3
> fix typo s/orangepi/nanopi/, s/pus/plus/
> usb_otg set to host mode
> wifi fix, based on commit 442e1f7e brcm,bcm43xx-fmac.txt
> remove functions on header pins: spi, ir, ehci 1&2, ohci 1&2, uart 1&2
> remove hdmi, de2, r-gpio-keys, mixer - not supported the board
> v3->v4 update WiFi chip compatible to bcm43430-fmac
> v4->v5 back to bcm4329-fmac bcm43430-fmac is the wrong way.
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> index 108f12c..e6810c8 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -6,6 +6,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-pc2.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-prime.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-zero-plus2.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-nanopi-neo2.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-nanopi-neo-plus2.dtb
>
> always := $(dtb-y)
> subdir-y := $(dts-dirs)
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
> new file mode 100644
> index 0000000..a6687db
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts
> @@ -0,0 +1,262 @@
> +/*
> + * Copyright (C) 2017 Antony Antony <antony@xxxxxxxxxxx>
> + * Copyright (C) 2016 ARM Ltd.
> + *
> + * 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 "sun50i-h5.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/pinctrl/sun4i-a10.h>
> +
> +/ {
> + model = "FriendlyARM NanoPi NEO Plus2";
> + compatible = "friendlyarm,nanopi-neo-plus2", "allwinner,sun50i-h5";
> +
> + reg_vcc3v3: vcc3v3 {
> + compatible = "regulator-fixed";
> + regulator-name = "vcc3v3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> +
> + aliases {
> + ethernet0 = &emac;
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> +
> + pwr {
> + label = "nanopi:green:pwr";
> + gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>;
> + default-state = "on";
> + };
> +
> + status {
> + label = "nanopi:red:status";
> + gpios = <&pio 0 20 GPIO_ACTIVE_HIGH>;
> + };
> + };
> +
> + reg_gmac_3v3: gmac-3v3 {
> + compatible = "regulator-fixed";
> + pinctrl-names = "default";
> + pinctrl-0 = <&gmac_power_pin_nanopi>;
> + regulator-name = "gmac-3v3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + startup-delay-us = <100000>;
> + enable-active-high;
> + gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>;
> + };
> +
> + vdd_cpux: gpio-regulator {
> + compatible = "regulator-gpio";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&vdd_cpux_r_npi>;
> +
> + regulator-name = "vdd-cpux";
> + regulator-type = "voltage";
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1300000>;
> + regulator-ramp-delay = <50>; /* 4ms */
> +
> + gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>;
> + gpios-states = <0x1>;
> + states = <1100000 0x0
> + 1300000 0x1>;
> + };
> +
> + wifi_pwrseq: wifi_pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + pinctrl-names = "default";
> + pinctrl-0 = <&wifi_en_npi>;
> + reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
> + post-power-on-delay-ms = <200>;
> + };

You should order these nodes alphabetically.

> +&codec {
> + allwinner,audio-routing =
> + "Line Out", "LINEOUT",
> + "MIC1", "Mic",
> + "Mic", "MBIAS";
> + status = "okay";
> +};
> +
> +&ehci0 {
> + status = "okay";
> +};
> +
> +&ehci3 {
> + status = "okay";
> +};
> +
> +&emac {
> + pinctrl-names = "default";
> + pinctrl-0 = <&emac_rgmii_pins>;
> + phy-supply = <&reg_gmac_3v3>;
> + phy-handle = <&ext_rgmii_phy>;
> + phy-mode = "rgmii";
> + status = "okay";
> +};
> +
> +&mdio {
> + ext_rgmii_phy: ethernet-phy@7 {
> + compatible = "ethernet-phy-ieee802.3-c22";
> + reg = <7>;
> + };
> +};

This will not compile.

> +&mmc0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
> + vmmc-supply = <&reg_vcc3v3>;
> + bus-width = <4>;
> + cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
> + status = "okay";
> +};
> +
> +&mmc1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc1_pins_a>;
> + vmmc-supply = <&reg_vcc3v3>;
> + vqmmc-supply = <&reg_vcc3v3>;
> + mmc-pwrseq = <&wifi_pwrseq>;
> + bus-width = <4>;
> + non-removable;
> + boot_device = <0>;

This property is not documented anywhere, I'm not sure what it's here
for.

> + status = "okay";
> +
> + /*
> + * AMPAK AP6212A WiFi module with BCM43430, rev=1 inside
> + * sdio vendor ID: 0x02d0, sdio device ID: 0xa9a6
> + * There is no specific Documentation: dt-binding for BCM43430
> + * brcm,bcm4329-fmac compatible can initialize this module
> + */

This is not really relevant.

> + brcmf: wifi@1 {
> + reg = <1>;
> + compatible = "brcm,bcm4329-fmac";
> + };
> +};
> +
> +&mmc2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc2_8bit_pins>;
> + vmmc-supply = <&reg_vcc3v3>;
> + bus-width = <8>;
> + non-removable;
> + cap-mmc-hw-reset;
> + boot_device = <0>;
> + status = "okay";
> +};
> +
> +&mmc2_8bit_pins {
> + /* Increase drive strength for DDR modes */
> + drive-strength = <40>;

It's very likely that you actually don't need 40mA

> + /* eMMC is missing pull-ups */
> + bias-pull-up;
> +};

And that one is already here by default.

> +&ohci0 {
> + status = "okay";
> +};
> +
> +&ohci3 {
> + status = "okay";
> +};
> +
> +&pio {
> + leds_npi: led_pins@0 {
> + pins = "PA10";
> + function = "gpio_out";
> + };
> + gmac_power_pin_nanopi: gmac_power_pin@0 {
> + pins = "PD6";
> + function = "gpio_out";
> + };
> +};

You don't need these nodes

> +
> +&r_pio {
> + leds_r_npi: led_pins@0 {
> + pins = "PL10";
> + function = "gpio_out";
> + };
> +
> + vdd_cpux_r_npi: regulator_pins@0 {
> + allwinner,pins = "PL6";
> + allwinner,function = "gpio_out";
> + allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> + };
> +
> + wifi_en_npi: wifi_en_pin {
> + pins = "PL7";
> + function = "gpio_out";
> + };
> +};

Or those.

> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_pins_a>;
> + status = "okay";
> +};
> +
> +&usb_otg {
> + dr_mode = "host";
> + status = "okay";
> +};
> +
> +&usbphy {
> + /* USB Type-A ports' VBUS is always on */
> + usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */

If it has an ID-detect pin, then it's not a host-only USB OTG
controller. dr_mode should be set to otg.

Maxime

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

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