linux-kernel - Re: [PATCH 11/13] arm64: dts: exynos: gs101: enable eeprom on gs101-oriole

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Date: Fri, 15 Dec 2023 09:07:36 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Sam Protsenko <semen.protsenko@...aro.org>,
 Tudor Ambarus <tudor.ambarus@...aro.org>, krzysztof.kozlowski+dt@...aro.org
Cc: peter.griffin@...aro.org, robh+dt@...nel.org, mturquette@...libre.com,
 sboyd@...nel.org, conor+dt@...nel.org, andi.shyti@...nel.org,
 alim.akhtar@...sung.com, gregkh@...uxfoundation.org, jirislaby@...nel.org,
 catalin.marinas@....com, will@...nel.org, s.nawrocki@...sung.com,
 tomasz.figa@...il.com, cw00.choi@...sung.com, arnd@...db.de,
 andre.draszik@...aro.org, saravanak@...gle.com, willmcvicker@...gle.com,
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
 linux-serial@...r.kernel.org
Subject: Re: [PATCH 11/13] arm64: dts: exynos: gs101: enable eeprom on
 gs101-oriole

On 14/12/2023 16:55, Sam Protsenko wrote:
> On Thu, Dec 14, 2023 at 4:53 AM Tudor Ambarus <tudor.ambarus@...aro.org> wrote:
>>
>> Enable the eeprom found on the battery connector.
>>
>> Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
>> ---
>>  .../boot/dts/exynos/google/gs101-oriole.dts    | 18 ++++++++++++++++++
>>  1 file changed, 18 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
>> index 4a71f752200d..11b299d21c5d 100644
>> --- a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
>> +++ b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts
>> @@ -63,6 +63,19 @@ &ext_200m {
>>         clock-frequency = <200000000>;
>>  };
>>
>> +&hsi2c_8 {
>> +       pinctrl-names = "default";
>> +       pinctrl-0 = <&hsi2c8_bus>;
>> +       #address-cells = <1>;
>> +       #size-cells = <0>;
> 
> Not sure if those 4 above properties belong in board's dts or in SoC's
> dtsi. Krzysztof, what do you think?

The cells should be in DTSI, because you cannot have an enabled i2c bus
without nodes in normal cases. The not-normal case is incomplete
description, which does not happen here.

The pinctrls I guess as well in DTSI, because you do not customize the
pins in the DTS. IOW, if the pinctrl nodes are coming from shared
pinctrl.DTSI, then pinctrl-0/names stay in DTSI as well.


Best regards,
Krzysztof