linux-kernel - Aw: Re: [next v7 8/8] arm64: dts: mt7986: add Bananapi R3

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Date:   Sun, 25 Dec 2022 12:47:02 +0100
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Daniel Golle <daniel@...rotopia.org>
Cc:     Frank Wunderlich <linux@...web.de>,
        linux-mediatek@...ts.infradead.org,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        Jianjun Wang <jianjun.wang@...iatek.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Vinod Koul <vkoul@...nel.org>, linux-usb@...r.kernel.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        devicetree@...r.kernel.org
Subject: Aw: Re: [next v7 8/8] arm64: dts: mt7986: add Bananapi R3

Hi

> Gesendet: Samstag, 24. Dezember 2022 um 20:00 Uhr
> Von: "Daniel Golle" <daniel@...rotopia.org>

> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-emmc.dtso
> > @@ -0,0 +1,30 @@
> > +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > +/*
> > + * Copyright (C) 2021 MediaTek Inc.
> > + * Author: Sam.Shih <sam.shih@...iatek.com>
> > + */
> > +
> > +/dts-v1/;
> > +/plugin/;
> > +
> > +/ {
> > +	compatible = "bananapi,bpi-r3", "mediatek,mt7986a";
> > +	model = "Bananapi BPI-R3 (emmc)";
>
> Why do you set the model string here?

seems to be a left over from testing where i wanted to see which base-dtb was
loaded without comparing mmc-node settings. Was easier to see with model-string :)

> > +
> > +	fragment@0 {
> > +		target-path = "/soc/mmc@...30000";
> > +		__overlay__ {
> > +			bus-width = <8>;
> > +			max-frequency = <200000000>;
> > +			cap-mmc-highspeed;
> > +			mmc-hs200-1_8v;
> > +			mmc-hs400-1_8v;
> > +			hs400-ds-delay = <0x14014>;
> > +			non-removable;
> > +			no-sd;
> > +			no-sdio;
> > +			status = "okay";
> > +		};
> > +	};
> > +};

> > diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
> > new file mode 100644
> > index 000000000000..618d3bb2f32f
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts

> > +&mdio {
> > +	switch: switch@31 {
> > +		compatible = "mediatek,mt7531";
> > +		reg = <31>;
> > +		reset-gpios = <&pio 5 GPIO_ACTIVE_HIGH>;
>
> Please add:
>
>                 interrupt-controller;
>                 #interrupt-cells = <1>;
>                 interrupt-parent = <&pio>;
>                 interrupts = <66 IRQ_TYPE_LEVEL_HIGH>;
>
> to have IRQ driven phy status instead of having to poll the link status
> of the 5x rj-45 ports.
> The value comes from schematics (pin AD24, GPIO66, 7531_INT) and I've
> tested this on my board.

ok, if you have it tested i add these properties in next version (and test it too).
I wait for tphy-binding to be applied to next (pcie and xhci already in torvalds/master).

> > +	};
> > +};
> > +

> > +&spi0 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&spi_flash_pins>;
> > +	cs-gpios = <0>, <0>;
>
> I don't think those bogus cs-gpios here and for spi1 below are needed.

can drop them in next version

> > +	status = "okay";
> > +};
> > +
> > +&spi1 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&spic_pins>;
> > +	cs-gpios = <0>, <0>;
> > +	status = "okay";
> > +};
> > +

regards Frank