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    SubjectRe: [PATCH v2 1/2] sun7i-a20-marsboard.dts: add marsboard-a20 support
    On 01/11/22 at 11:35上午, Maxime Ripard wrote:
    > Date: Tue, 11 Jan 2022 11:35:42 +0100
    > From: Maxime Ripard <maxime@cerno.tech>
    > To: conleylee@foxmail.com
    > Cc: robh@kernel.org, wens@csie.org, devicetree@vger.kernel.org,
    > linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
    > Subject: Re: [PATCH v2 1/2] sun7i-a20-marsboard.dts: add marsboard-a20
    > support
    >
    > Hi,
    >
    > On Wed, Jan 05, 2022 at 10:45:50AM +0800, conleylee@foxmail.com wrote:
    > > From: conley <conleylee@foxmail.com>
    >
    > This should be your full name in the author and signed-off-by
    >
    > > ARM dts: sun7i: Add Marsboard A20 board
    > >
    > > This patch add support for Marsboard A20 board.
    > >
    > > The Marsboard A20 is a A20 based SBC with 1G RAM, 8G Flash, micro SD
    > > card slot , SATA socketm 10/100 ethernet, HDMI port, 4 USB2.0 ports, 2
    > > USB2.0 OTG, USB WIFI(RTL8188EU) with antenna.
    > >
    > > Change since v1.
    > > - Spearate biddings and dts as two patches.
    > > - use SPDX tag
    >
    > And the changelog should be after the --- below
    >
    > > Signed-off-by: conley <conleylee@foxmail.com>
    > > ---
    > > arch/arm/boot/dts/Makefile | 1 +
    > > arch/arm/boot/dts/sun7i-a20-marsboard.dts | 183 ++++++++++++++++++++++
    > > 2 files changed, 184 insertions(+)
    > > create mode 100644 arch/arm/boot/dts/sun7i-a20-marsboard.dts
    > >
    > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
    > > index 0de64f237cd8..4628a2617313 100644
    > > --- a/arch/arm/boot/dts/Makefile
    > > +++ b/arch/arm/boot/dts/Makefile
    > > @@ -1219,6 +1219,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
    > > sun7i-a20-icnova-swac.dtb \
    > > sun7i-a20-lamobo-r1.dtb \
    > > sun7i-a20-linutronix-testbox-v2.dtb \
    > > + sun7i-a20-marsboard.dtb \
    > > sun7i-a20-m3.dtb \
    > > sun7i-a20-mk808c.dtb \
    > > sun7i-a20-olimex-som-evb.dtb \
    > > diff --git a/arch/arm/boot/dts/sun7i-a20-marsboard.dts b/arch/arm/boot/dts/sun7i-a20-marsboard.dts
    > > new file mode 100644
    > > index 000000000000..7ab6aa30fee6
    > > --- /dev/null
    > > +++ b/arch/arm/boot/dts/sun7i-a20-marsboard.dts
    > > @@ -0,0 +1,183 @@
    > > +// SPDX-License-Identifier: LGPL-2.1+
    >
    > The license for DT files is usually a dual-license with GPL and MIT,
    > which would be:
    >
    > SPDX-License-Identifier: (GPL-2.0+ OR MIT)
    >
    > You can't link to a DT, so GPL and LGPL should be equivalent here, and
    > MIT is useful for other projects (like the *BSD) that reuse the DT.
    >
    > > +/*
    > > + * Copyright 2021 Conley Lee
    > > + * Conley Lee <conleylee@foxmail.com>
    > > + */
    > > +
    > > +/dts-v1/;
    > > +#include "sun7i-a20.dtsi"
    > > +#include "sunxi-common-regulators.dtsi"
    > > +
    > > +#include <dt-bindings/gpio/gpio.h>
    > > +#include <dt-bindings/interrupt-controller/irq.h>
    > > +
    > > +/ {
    > > + model = "HAOYU Electronics Marsboard A20";
    > > + compatible = "haoyu,a20-marsboard", "allwinner,sun7i-a20";
    >
    > Is there multiple boards called marsboard?
    >
    > If not, then the compatible should be haoyu,marsboard.
    >
    > The file name should be sun7i-a20-haoyu-marsboard too.
    >
    > > + aliases {
    > > + serial0 = &uart0;
    > > + };
    > > +
    > > + chosen {
    > > + stdout-path = "serial0:115200n8";
    > > + };
    > > +
    > > + hdmi-connector {
    > > + compatible = "hdmi-connector";
    > > + type = "a";
    > > +
    > > + port {
    > > + hdmi_con_in: endpoint {
    > > + remote-endpoint = <&hdmi_out_con>;
    > > + };
    > > + };
    > > + };
    > > +};
    > > +
    > > +&ahci {
    > > + target-supply = <&reg_ahci_5v>;
    > > + status = "okay";
    > > +};
    > > +
    > > +&codec {
    > > + status = "okay";
    > > +};
    > > +
    > > +&cpu0 {
    > > + cpu-supply = <&reg_dcdc2>;
    > > +};
    > > +
    > > +&de {
    > > + status = "okay";
    > > +};
    > > +
    > > +&ehci0 {
    > > + status = "okay";
    > > +};
    > > +
    > > +&ehci1 {
    > > + status = "okay";
    > > +};
    > > +
    > > +&gmac_mii_pins {
    > > + pins = "PA0", "PA1", "PA2",
    > > + "PA3", "PA4", "PA5", "PA6",
    > > + "PA7", "PA8", "PA9", "PA10",
    > > + "PA11", "PA12", "PA13", "PA14",
    > > + "PA15", "PA16", "PA17";
    > > +};
    >
    > Why do you need that node?
    >
    > Maxime

    1. There are two boards called marsboard, another one is based on
    sun4i-a10.
    2. About the gmac_mii_pins node: the pin PA17 is connected to PHY
    as EXTERR signal on sun7i-a20-marsboard, it's different from
    the definetion in dtsi.

    Thanks ~

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