linux-kernel - Re: [PATCH v1 5/6] arm64: dts: allwinner: h616: Add BigTreeTech CB1 SoM & boards support

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Date:   Thu, 3 Aug 2023 17:50:42 +0200
From:   Martin Botka <martin@...u3d.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Konrad Dybcio <konrad.dybcio@...ainline.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Jami Kettunen <jamipkettunen@...ainline.org>,
        Paul Bouchara <paul.bouchara@...ainline.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Andre Przywara <andre.przywara@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Icenowy Zheng <uwu@...nowy.me>,
        Ludwig Kormann <ludwig.kormann@...42.de>,
        Andrew Lunn <andrew@...n.ch>, Heiko Stuebner <heiko@...ech.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Chris Morgan <macromorgan@...mail.com>,
        Jagan Teki <jagan@...eble.ai>,
        Maxime Ripard <mripard@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 5/6] arm64: dts: allwinner: h616: Add BigTreeTech CB1
 SoM & boards support



On 8/3/23 4:28 PM, Krzysztof Kozlowski wrote:
> On 03/08/2023 00:02, Martin Botka wrote:
>> From: Martin Botka <martin.botka@...ainline.org>
>>
>> CB1 is Compute Module style board that plugs into Rpi board style adapter or
>> Manta 3D printer boards (M4P/M8P).
>>
>> The SoM features:
>>    - H616 SoC
>>    - 1GiB of RAM
>>    - AXP313A PMIC
>>    - RTL8189FTV WiFi
> 
> ...
> 
>> +&mmc0 {
>> +	vmmc-supply = <&reg_dldo1>;
>> +	broken-cd;
>> +	bus-width = <4>;
>> +	status = "okay";
>> +};
>> +
>> +&mmc1 {
>> +	vmmc-supply = <&reg_vcc33_wifi>;
>> +	vqmmc-supply = <&reg_vcc_wifi_io>;
>> +	mmc-pwrseq = <&wifi_pwrseq>;
>> +	bus-width = <4>;
>> +	non-removable;
>> +	mmc-ddr-1_8v;
>> +	status = "okay";
>> +
>> +	rtl8189ftv: sdio_wifi@1 {
> 
> No underxcores in node names. Generic node names, so probably "wifi".
Got it.
> 
>> +		reg = <1>;
> 
> Missing compatible?
No it is an explicitly defined SDIO device so we can add ethernet alias 
for it so we can for example set the MAC address of it via u-boot and etc :)

The actual driver for it is out of tree and from the current state of it 
looks like will be for a while.
Orange Pi Zero Plus based on H5 does this exact thing as well for the 
same purpose with the same wifi chip :)

Cheers,
Martin
> 
> 
> 
> Best regards,
> Krzysztof
> 
>