linux-kernel - Re: [PATCH v2 7/7] arm64: dts: rockchip: rk3568-evb1-v10: add node for sd card

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Message-ID: <36612273.XM6RcZxFsP@diego>
Date:   Wed, 04 Aug 2021 20:57:19 +0200
From:   Heiko Stübner <heiko@...ech.de>
To:     Johan Jonker <jbx6244@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Michael Riesch <michael.riesch@...fvision.net>
Cc:     Rob Herring <robh+dt@...nel.org>, Liang Chen <cl@...k-chips.com>,
        Peter Geis <pgwipeout@...il.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Simon Xue <xxm@...k-chips.com>,
        Jianqun Xu <jay.xu@...k-chips.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Lee Jones <lee.jones@...aro.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Zhang Changzhong <zhangchangzhong@...wei.com>
Subject: Re: [PATCH v2 7/7] arm64: dts: rockchip: rk3568-evb1-v10: add node for sd card

Hi Michael,

Am Mittwoch, 4. August 2021, 20:49:45 CEST schrieb Michael Riesch:
> Hi Johan,
> 
> Thanks for your comments, I'll try to implement the requested changes
> and prepare a v3 tomorrow.
> 
> On 8/4/21 4:30 PM, Johan Jonker wrote:
> > Hi Michael,
> > 
> > Could you add a commit message to all patches in this serie?
> 
> Well the short commit message (i.e., the subject line) pretty much wraps
> it all up in my opinion, hence no need for an extended commit message.
> Is there anything in particular you would like to see or have explained
> that requires an extended message? I would like to refrain from adding
> an extended commit message just for the sake of having one.

it's just a matter of style, and yes having a non-empty commit message
is preferred in most parts of the kernel.

Even if it's just a simple one-liner ;-), for example

"Enable the sdmmc node on the rk3568-evb1 with the 4 lanes connected on it"


Heiko

> 
> > On 8/4/21 3:06 PM, Michael Riesch wrote:
> >> Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
> >> ---
> >> v2:
> >> - rename alias to match convention
> >>
> >>  arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts | 15 +++++++++++++++
> >>  1 file changed, 15 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
> >> index ed96f27c64a3..c4da6436059d 100644
> >> --- a/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
> >> +++ b/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
> >> @@ -17,6 +17,7 @@
> >>  		ethernet0 = &gmac0;
> >>  		ethernet1 = &gmac1;
> > 
> >>  		mmc0 = &sdhci;
> >> +		mmc1 = &sdmmc0;
> > 
> > mmc aliases are sort on reg address based on availability without number
> > gap.
> > 
> > 	sdmmc0: mmc@...b0000 {}
> > 	sdhci: mmc@...10000 {}
> 
> I'll turn these around.
> 
> >>  	};
> >>  
> >>  	chosen: chosen {
> >> @@ -353,6 +354,20 @@
> >>  	status = "okay";
> >>  };
> >>  
> >> +&sdmmc0 {
> >> +	bus-width = <4>;
> >> +	cap-sd-highspeed;
> >> +	cd-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_LOW>;
> >> +	disable-wp;
> > 
> >> +	pinctrl-names = "default";
> >> +	pinctrl-0 = <&sdmmc0_bus4 &sdmmc0_clk &sdmmc0_cmd &sdmmc0_det>;
> > 
> > pinctrl-names below pinctrl-0 like the rest of rk356x.dtsi
> 
> OK!
> 
> >> +	sd-uhs-sdr104;
> > 
> >> +	supports-sd;
> > 
> > Check mmc-controller.yaml, rockchip-dw-mshc.yaml and
> > synopsys-dw-mshc-common.yaml for properties.
> 
> I am afraid I don't quite follow. What exactly should I check? I am
> pretty sure that the properties I used are described in the mentioned
> yaml files.
> 
> Regards, Michael
> 
> > 
> >> +	vmmc-supply = <&vcc3v3_sd>;
> >> +	vqmmc-supply = <&vccio_sd>;
> >> +	status = "okay";
> >> +};
> >> +
> >>  &uart2 {
> >>  	status = "okay";
> >>  };
> >>
>