linux-kernel - Re: [PATCH v3 0/7] ipq9574: Enable PCI-Express support

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Date: Fri, 19 Apr 2024 19:58:08 +0530
From: Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
To: Alexandru Gagniuc <mr.nuke.me@...il.com>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Lorenzo
 Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński
	<kw@...ux.com>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas
	<bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I
	<kishon@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen
 Boyd <sboyd@...nel.org>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v3 0/7] ipq9574: Enable PCI-Express support



On 4/15/2024 11:50 PM, Alexandru Gagniuc wrote:
> There are four PCIe ports on IPQ9574, pcie0 thru pcie3. This series
> addresses pcie2, which is a gen3x2 port. The board I have only uses
> pcie2, and that's the only one enabled in this series.
> 
> I believe this makes sense as a monolithic series, as the individual
> pieces are not that useful by themselves.
> 
> In v2, I've had some issues regarding the dt schema checks. For
> transparency, I used the following test invocations to test v3:
> 
>        make dt_binding_check     DT_SCHEMA_FILES=qcom,pcie.yaml:qcom,ipq8074-qmp-pcie-phy.yaml
>        make dtbs_check           DT_SCHEMA_FILES=qcom,pcie.yaml:qcom,ipq8074-qmp-pcie-phy.yaml
> 
> 

Alexandru,

Thanks for your contributions to the Qualcomm IPQ chipsets.

I would like to inform you that we have also submitted the patches to 
enable the PCIe support on IPQ9574[1][2] and waiting for the ICC 
support[3] to land to enable the NOC clocks.

[1] 
https://lore.kernel.org/linux-arm-msm/20230519090219.15925-1-quic_devipriy@quicinc.com/
[2] 
https://lore.kernel.org/linux-arm-msm/20230519085723.15601-1-quic_devipriy@quicinc.com/
[3] 
https://lore.kernel.org/linux-arm-msm/20240418092305.2337429-1-quic_varada@quicinc.com/

Please take a look at these patches as well.

Thanks,
Kathiravan T.


> Changes since v2:
>   - reworked resets in qcom,pcie.yaml to resolve dt schema errors
>   - constrained "reg" in qcom,pcie.yaml
>   - reworked min/max intems in qcom,ipq8074-qmp-pcie-phy.yaml
>   - dropped msi-parent for pcie node, as it is handled by "msi" IRQ
> 
> Changes since v1:
>   - updated new tables in phy-qcom-qmp-pcie.c to use lowercase hex numbers
>   - reorganized qcom,ipq8074-qmp-pcie-phy.yaml to use a single list of clocks
>   - reorganized qcom,pcie.yaml to include clocks+resets per compatible
>   - Renamed "pcie2_qmp_phy" label to "pcie2_phy"
>   - moved "ranges" property of pcie@...00000 higher up
> 
> Alexandru Gagniuc (7):
>    dt-bindings: clock: Add PCIe pipe related clocks for IPQ9574
>    clk: qcom: gcc-ipq9574: Add PCIe pipe clocks
>    dt-bindings: PCI: qcom: Add IPQ9574 PCIe controller
>    PCI: qcom: Add support for IPQ9574
>    dt-bindings: phy: qcom,ipq8074-qmp-pcie: add ipq9574 gen3x2 PHY
>    phy: qcom-qmp-pcie: add support for ipq9574 gen3x2 PHY
>    arm64: dts: qcom: ipq9574: add PCIe2 nodes
> 
>   .../devicetree/bindings/pci/qcom,pcie.yaml    |  35 +++++
>   .../phy/qcom,ipq8074-qmp-pcie-phy.yaml        |  36 ++++-
>   arch/arm64/boot/dts/qcom/ipq9574.dtsi         |  93 +++++++++++-
>   drivers/clk/qcom/gcc-ipq9574.c                |  76 ++++++++++
>   drivers/pci/controller/dwc/pcie-qcom.c        |  13 +-
>   drivers/phy/qualcomm/phy-qcom-qmp-pcie.c      | 136 +++++++++++++++++-
>   .../phy/qualcomm/phy-qcom-qmp-pcs-pcie-v5.h   |  14 ++
>   include/dt-bindings/clock/qcom,ipq9574-gcc.h  |   4 +
>   8 files changed, 400 insertions(+), 7 deletions(-)
>