linux-kernel - Re: [PATCH 0/7] arm64: qcom-sm8[456]50: properly describe the PCIe Gen4x2 PHY AUX clock

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Date: Wed, 20 Mar 2024 11:21:00 -0500
From: Rob Herring <robh@...nel.org>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: linux-phy@...ts.infradead.org, 
 Kishon Vijay Abraham I <kishon@...nel.org>, linux-arm-msm@...r.kernel.org, 
 Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, linux-kernel@...r.kernel.org, 
 Vinod Koul <vkoul@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>
Subject: Re: [PATCH 0/7] arm64: qcom-sm8[456]50: properly describe the PCIe
 Gen4x2 PHY AUX clock


On Tue, 19 Mar 2024 11:44:26 +0100, Neil Armstrong wrote:
> The PCIe Gen4x2 PHY found in the SM8[456]50 SoCs have a second clock named
> "PHY_AUX_CLK" which is an input of the Global Clock Controller (GCC) which
> is muxed & gated then returned to the PHY as an input.
> 
> Document the clock IDs to select the PIPE clock or the AUX clock,
> also enforce a second clock-output-names and a #clock-cells value of 1
> for the PCIe Gen4x2 PHY found in the SM8[456]50 SoCs.
> 
> The PHY driver needs a light refactoring to support a second clock,
> and finally the DT is changed to connect the PHY second clock to the
> corresponding GCC input then drop the dummy fixed rate clock.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
> Neil Armstrong (7):
>       dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: document PHY AUX clock on SM8[456]50 SoCs
>       phy: qcom: qmp-pcie: refactor clock register code
>       phy: qcom: qmp-pcie: register second optional PHY AUX clock
>       phy: qcom: qmp-pcie: register PHY AUX clock for SM8[456]50 4x2 PCIe PHY
>       arm64: dts: qcom: sm8450: remove pcie-1-phy-aux-clk and add pcie1_phy pcie1_phy_aux_clk
>       arm64: dts: qcom: sm8550: remove pcie-1-phy-aux-clk and add pcie1_phy pcie1_phy_aux_clk
>       arm64: dts: qcom: sm8650: remove pcie-1-phy-aux-clk and add pcie1_phy pcie1_phy_aux_clk
> 
>  .../bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml   |  27 +++++-
>  arch/arm64/boot/dts/qcom/sm8450.dtsi               |   8 +-
>  arch/arm64/boot/dts/qcom/sm8550-hdk.dts            |   4 -
>  arch/arm64/boot/dts/qcom/sm8550-mtp.dts            |   4 -
>  arch/arm64/boot/dts/qcom/sm8550-qrd.dts            |   8 --
>  arch/arm64/boot/dts/qcom/sm8550.dtsi               |  13 +--
>  arch/arm64/boot/dts/qcom/sm8650-mtp.dts            |   4 -
>  arch/arm64/boot/dts/qcom/sm8650-qrd.dts            |   4 -
>  arch/arm64/boot/dts/qcom/sm8650.dtsi               |  13 +--
>  drivers/phy/qualcomm/phy-qcom-qmp-pcie.c           | 104 ++++++++++++++++++---
>  include/dt-bindings/phy/phy-qcom-qmp.h             |   4 +
>  11 files changed, 129 insertions(+), 64 deletions(-)
> ---
> base-commit: 2e93f143ca010a5013528e1cfdc895f024fe8c21
> change-id: 20240319-topic-sm8x50-upstream-pcie-1-phy-aux-clk-4b35169707dd
> 
> Best regards,
> --
> Neil Armstrong <neil.armstrong@...aro.org>
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


New warnings running 'make CHECK_DTBS=y qcom/sm8550-hdk.dtb qcom/sm8550-mtp.dtb qcom/sm8550-qrd.dtb qcom/sm8650-mtp.dtb qcom/sm8650-qrd.dtb' for 20240319-topic-sm8x50-upstream-pcie-1-phy-aux-clk-v1-0-926d7a4ccd80@...aro.org:

arch/arm64/boot/dts/qcom/sm8550-qrd.dtb: clock-controller@...000: clocks: [[41], [42], [43], [44, 0], [45, 0], [45, 1], [45, 2], [46, 0]] is too short
	from schema $id: http://devicetree.org/schemas/clock/qcom,sm8550-gcc.yaml#
arch/arm64/boot/dts/qcom/sm8550-qrd.dtb: clock-controller@...000: Unevaluated properties are not allowed ('clocks' was unexpected)
	from schema $id: http://devicetree.org/schemas/clock/qcom,sm8550-gcc.yaml#