linux-kernel - Re: [PATCH 2/2] arm64: dts: ti: k3-j7200-common-proc-board: Enable I2C

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Date:   Sat, 15 Apr 2023 07:47:09 -0500
From:   Nishanth Menon <nm@...com>
To:     "Kumar, Udit" <u-kumar1@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>, <afd@...com>, <bb@...com>,
        <vaishnav.a@...com>, <j-choudhary@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <vigneshr@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-j7200-common-proc-board: Enable
 I2C

On 09:36-20230415, Kumar, Udit wrote:
[...]

> > > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> > > index 63633e4f6c59..e66bbfe65ff2 100644
> > > --- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> > > +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> > > @@ -254,6 +254,10 @@ exp3: gpio@20 {
> > >   	};
> > >   };
> > > +&wkup_i2c0 {
> > > +	status = "okay";
> > How about the pinmux? speed? what peripheral is on the wakeup i2c?
> > 
> > 	Do we have an eeprom or something here?
> 
> 
> This got eeprom and PMIC,
> 
> eeprom read is ok with pin mux and speed.
> 
> if you want to specify, let me know

yes, you must specify eeprom at least. I understand pmic is in
discussion atm [1], So, that can be resolved seperately.

Also if the eeprom is on the SoM, you should add this in the SoM dtsi,
not the baseboard dtsi.

[1] https://lore.kernel.org/all/714a56b1-438c-7aad-920b-f3f1d72afc5f@linaro.org/
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D