linux-kernel - Re: [PATCH 03/12] arm64: dts: ti: k3-j721e-beagleboneai64: Fixup reference to phandles array

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Date:   Tue, 6 Jun 2023 09:56:58 +0530
From:   "Kumar, Udit" <u-kumar1@...com>
To:     Nishanth Menon <nm@...com>
CC:     Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Robert Nelson <robertcnelson@...il.com>
Subject: Re: [PATCH 03/12] arm64: dts: ti: k3-j721e-beagleboneai64: Fixup
 reference to phandles array

Hi Nishanth,

On 6/6/2023 2:19 AM, Nishanth Menon wrote:
> On 22:31-20230605, Kumar, Udit wrote:
> [...]
>>> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
>>> index 37c24b077b6a..c13246a9ed8f 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
>>> +++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
> [...]
>>> @@ -639,7 +639,7 @@ &main_i2c6 {
>>>    &wkup_i2c0 {
>>>    	status = "okay";
>>>    	pinctrl-names = "default";
>>> -	pinctrl-0 = <&wkup_i2c0_pins_default &eeprom_wp_pins_default>;
>>> +	pinctrl-0 = <&wkup_i2c0_pins_default>, <&eeprom_wp_pins_default>;
>>>    	clock-frequency = <400000>;
>> Why we need more than 2 pio lines for i2c node ,
> pio lines? I am not sure I understand. If you are suggesting
> eeprom_wp_pins to be moved to the eeprom node, It is probably
> un-related to this series, but OK, i think it is probably a valid
> change (unless Robert sees a reason why he did it the way he did).

correct, I am suggesting to move  eeprom_wp_pins_default to eeprom node.

i2c needs 2 lines which are defined in wkup_i2c0_pins_default, Adding 
eeprom_wp_pins_default will not be true representation of i2c node.

It will be good to have similar changes in main_i2c1 and main_i2c5  node 
for csi0_gpio_pins_default and csi1_gpio_pins_default.