[PATCH v2] dt-bindings: ufs: qcom: document QCS9100 UFS

[PATCH v2] dt-bindings: ufs: qcom: document QCS9100 UFS

[Tengfei Fan]

Document the compatible string for the UFS found on QCS9100.
QCS9100 is drived from SA8775p. Currently, both the QCS9100 and SA8775p
platform use non-SCMI resource. In the future, the SA8775p platform will
move to use SCMI resources and it will have new sa8775p-related device
tree. Consequently, introduce "qcom,qcs9100-ufshc" to describe non-SCMI
based UFS.

Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>
---
Introduce support for the QCS9100 SoC device tree (DTSI) and the
QCS9100 RIDE board DTS. The QCS9100 is a variant of the SA8775p.
While the QCS9100 platform is still in the early design stage, the
QCS9100 RIDE board is identical to the SA8775p RIDE board, except it
mounts the QCS9100 SoC instead of the SA8775p SoC.

The QCS9100 SoC DTSI is directly renamed from the SA8775p SoC DTSI, and
all the compatible strings will be updated from "SA8775p" to "QCS9100".
The QCS9100 device tree patches will be pushed after all the device tree
bindings and device driver patches are reviewed.

The final dtsi will like:
https://lore.kernel.org/linux-arm-msm/20240703025850.2172008-3-quic_tengfan@quicinc.com/

The detailed cover letter reference:
https://lore.kernel.org/linux-arm-msm/20240703025850.2172008-1-quic_tengfan@quicinc.com/
---
Changes in v2:
  - Split huge patch series into different patch series according to
    subsytems
  - Update patch commit message

prevous disscussion here:
[1] v1: https://lore.kernel.org/linux-arm-msm/20240703025850.2172008-1-quic_tengfan@quicinc.com/
---
 Documentation/devicetree/bindings/ufs/qcom,ufs.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
index 25a5edeea164..baee567fbcd6 100644
--- a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
+++ b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
@@ -26,6 +26,7 @@ properties:
           - qcom,msm8994-ufshc
           - qcom,msm8996-ufshc
           - qcom,msm8998-ufshc
+          - qcom,qcs9100-ufshc
           - qcom,sa8775p-ufshc
           - qcom,sc7180-ufshc
           - qcom,sc7280-ufshc
@@ -146,6 +147,7 @@ allOf:
           contains:
             enum:
               - qcom,msm8998-ufshc
+              - qcom,qcs9100-ufshc
               - qcom,sa8775p-ufshc
               - qcom,sc7280-ufshc
               - qcom,sc8180x-ufshc

---
base-commit: 0b58e108042b0ed28a71cd7edf5175999955b233
change-id: 20240709-document_qcs9100_ufshc_compatible-dc47995c8378

Best regards,
-- 
Tengfei Fan <quic_tengfan@quicinc.com>

Re: [PATCH v2] dt-bindings: ufs: qcom: document QCS9100 UFS

[Krzysztof Kozlowski]

On 09/07/2024 15:21, Tengfei Fan wrote:
> Document the compatible string for the UFS found on QCS9100.
> QCS9100 is drived from SA8775p. Currently, both the QCS9100 and SA8775p
> platform use non-SCMI resource. In the future, the SA8775p platform will
> move to use SCMI resources and it will have new sa8775p-related device
> tree. Consequently, introduce "qcom,qcs9100-ufshc" to describe non-SCMI
> based UFS.
> 
> Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH v2] dt-bindings: ufs: qcom: document QCS9100 UFS

[Tengfei Fan]

On 7/10/2024 6:17 PM, Krzysztof Kozlowski wrote:
> On 09/07/2024 15:21, Tengfei Fan wrote:
>> Document the compatible string for the UFS found on QCS9100.
>> QCS9100 is drived from SA8775p. Currently, both the QCS9100 and SA8775p
>> platform use non-SCMI resource. In the future, the SA8775p platform will
>> move to use SCMI resources and it will have new sa8775p-related device
>> tree. Consequently, introduce "qcom,qcs9100-ufshc" to describe non-SCMI
>> based UFS.
>>
>> Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> Best regards,
> Krzysztof
> 

After considering the feedback provided on the subject, We have decided
to keep current SA8775p compatible and ABI compatibility in drivers.
Let's close this session and ignore the current patche here.
Thank you for your input.

-- 
Thx and BRs,
Tengfei Fan