Re: [PATCH] arm64: dts: qcom: qcs615: Adds SPMI bus, PMIC and peripherals

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On 10/22/2024 5:38 PM, Dmitry Baryshkov wrote:
On Tue, 22 Oct 2024 at 11:26, Tingguo Cheng <quic_tingguoc@xxxxxxxxxxx> wrote:



On 10/14/2024 6:53 PM, Dmitry Baryshkov wrote:
On Mon, Oct 14, 2024 at 06:08:17PM +0800, Tingguo Cheng wrote:
Create a new file qcs615-pmic.dtsi to add on-board PMIC and peripher-
als in the PMIC that controlled by SPMI bus. The peripherals include
GPIO, RTC, PON, power key and resin-key for QCS615 platform. The power
key and volume down key are controlled by PMIC PON hardware on QCS615.

Why do you need a separate file? Unless there is a good reason such
configuration should be split between the pmic.dtsi and the board file.

One reason is that I use upstream as
template(x1ee80100,sc8180x,sa8775p...), they all have
platform-pmics.dtsi alongside.

On the other hand, qcs615-pmic.dtsi contains only the PMIC's
peripherals, creating a new file can eliminate duplicate code if there
are any other new boards with pmm6155au as their PMIC(similar to
x1e80100-lenovo-xxx/x1e80100-microsoft-xxxx, where "x1e80100-pmics.dtsi"
has been included).

And this is pretty unique  to those platforms and it exists mostly to
facilitate the case when a platform has several instances of the same
PMIC. In all other cases (mobile, IoT) usually there is just one
instance of the particular PMIC. In such a case pmic definitions go to
"pmABCDEF.dtsi" to be reused by the platform and then board DT can
include that file and wire it up according to the platform needs.

Yes, in this case, there is only one PMIC. So making a new file does not make sense except the PMIC is totally a new design.
BTW, what is the PMIC id for pmm6155au? Is it a real PMIC or a version
of some other PMIC?

pmm6155au is the PMIC id(Silk scree). It's a real PMIC for qcs615.Maybe
I should use the name qcs615-pmics.dtsi instead of qcs6150-pmic.dtsi to
align with other platforms.

Is it the same thing as PM6150? Or is it a combo of PM6150 and PM6150L?

I got your point, I did some more research, it's a variant of pm8150. In this case, I will upload a new version that makes DT to be changed after it includes pm8150.dtsi.
Signed-off-by: Tingguo Cheng <quic_tingguoc@xxxxxxxxxxx>


--
Thank you & BRs
Tingguo





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