Re: [PATCH v4 3/3] media: qcom: camss: Add MSM8953 resources

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On 2024-11-13 10:53, Bryan O'Donoghue wrote:
On 13/11/2024 08:01, barnabas.czeman@xxxxxxxxxxxxxx wrote:
I see that you do reuse csiphy_res_8x16 for this platform support, in
this case let me ask you to double check/test that the "vdda" regulator is actually a CSIPHY regulator, and if so, please move the registration
of the regulators to csiphy_res_8x16 as a preceding change.
It is placed in CSID at downstream and this is the documentation of
the downstream property:
- qcom,mipi-csi-vdd-supply : should contain regulator to be used for
     this csid core
so it should be a csid regulator as i understand.
It is also placed at CSIDs in msm8953-camera.dtsi

No, the regulator(s) supply voltage to the PHY.
On sm8250 it is for csiphy but on older soc like on msm8953, msm8917, msm8916
this regulator is placed in csid nodes.
https://git.codelinaro.org/clo/la/kernel/msm-4.9/-/blob/LA.UM.10.6.2.c26-01500-89xx.0/arch/arm64/boot/dts/qcom/msm8953-camera.dtsi#L96
There is no regulator in csiphy nodes only PM domains.
I will check later move the regulator to the csiphy.

Make sure you have:

commit 44fdbb9d1a3892db92b2c9cf5f46e32ca4095d92
Author: Vladimir Zapolskiy <vladimir.zapolskiy@xxxxxxxxxx>
Date:   Fri Sep 27 00:19:56 2024 +0300

    media: qcom: camss: add management of supply regulators to CSIPHY

and give the change a try.

---
bod




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