Re: [PATCH V2] dt-bindings: clock: qcom: Remove required-opps from required list on SM8650

From: Jagadeesh Kona
Date: Fri Jul 26 2024 - 10:31:22 EST




On 7/24/2024 1:38 PM, Krzysztof Kozlowski wrote:
On 20/07/2024 07:28, Jagadeesh Kona wrote:
On SM8650, the minimum voltage corner supported on MMCX from cmd-db is
sufficient for clock controllers to operate and there is no need to specify
the required-opps. Hence remove the required-opps property from the list of
required properties for SM8650 camcc and videocc bindings.

This fixes:
arch/arm64/boot/dts/qcom/sm8650-mtp.dtb: clock-controller@aaf0000:
'required-opps' is a required property

arch/arm64/boot/dts/qcom/sm8650-mtp.dtb: clock-controller@ade0000:
'required-opps' is a required property

Fixes: a6a61b9701d1 ("dt-bindings: clock: qcom: Add SM8650 video clock controller")
Fixes: 1ae3f0578e0e ("dt-bindings: clock: qcom: Add SM8650 camera clock controller")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202407070147.C9c3oTqS-lkp@xxxxxxxxx/
Signed-off-by: Jagadeesh Kona <quic_jkona@xxxxxxxxxxx>
---
Changes in V2:
- Made required: conditional and dropped required-opps from it only for SM8650 platform
- Dropped Krzysztof Acked-by tag due to above changes
- Link to V1: https://lore.kernel.org/all/20240708130836.19273-1-quic_jkona@xxxxxxxxxxx/#r

.../bindings/clock/qcom,sm8450-camcc.yaml | 26 +++++++++++++------
.../bindings/clock/qcom,sm8450-videocc.yaml | 25 +++++++++++++-----
2 files changed, 36 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8450-camcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8450-camcc.yaml
index f58edfc10f4c..8698c801ed11 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sm8450-camcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sm8450-camcc.yaml
@@ -21,9 +21,6 @@ description: |
include/dt-bindings/clock/qcom,sm8650-camcc.h
include/dt-bindings/clock/qcom,x1e80100-camcc.h
-allOf:
- - $ref: qcom,gcc.yaml#
-
properties:
compatible:
enum:
@@ -53,11 +50,24 @@ properties:
reg:
maxItems: 1
-required:

You cannot remove required block.

- - compatible
- - clocks
- - power-domains
- - required-opps
+allOf:
+ - $ref: qcom,gcc.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: qcom,sm8650-camcc
+ then:
+ required:
+ - compatible
+ - clocks
+ - power-domains
+ else:
+ required:
+ - compatible
+ - clocks
+ - power-domains
+ - required-opps
unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
index b2792b4bb554..2e5a061f33d6 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
@@ -40,15 +40,26 @@ properties:
description:
A phandle to an OPP node describing required MMCX performance point.
-required:

No, you cannot remove required block.

To clarify: there is almost no single binding using your style. Even if
there is one, then 99 others are using it differently. Do not implement
things entirely different than everyone else. This is the same for C
code you send upstream. No difference here...


Thanks Krzysztof for the explanation.

Hi Dmitry,

As we discussed during SM8650 camcc and videocc changes, the MMCX rail's minimum voltage level from cmd-db is adequate for these clock controllers to operate on SM8650. So, we removed the 'required-opps' property from their DT nodes.

Although 'required-opps' will remain in the properties list, it’s not mandatory to be present in 'required:' list, as it is dependent on cmd-db minimum level. So, can I please go ahead and update these bindings to remove 'required-opps' from the 'required:' list, as done in v1 of this series.

It seems unconventional to make 'required:' conditional based on the platform type.

v1 link:- https://lore.kernel.org/all/rbej7rbjiwtgf4reiomtmlv3ef3ljfys5yfzypigrertylucu7@be3v65aeuimb/

Thanks,
Jagadeesh

Best regards,
Krzysztof