linux-kernel - Re: [PATCH v4 10/12] PCI: qcom: Add SM8550 PCIe support

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Date:   Mon, 23 Jan 2023 09:27:32 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Abel Vesa <abel.vesa@...aro.org>
Cc:     Manivannan Sadhasivam <mani@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 10/12] PCI: qcom: Add SM8550 PCIe support

On Thu, Jan 19, 2023 at 05:35:08PM +0200, Abel Vesa wrote:
> On 23-01-19 19:51:55, Manivannan Sadhasivam wrote:
> > On Thu, Jan 19, 2023 at 04:04:51PM +0200, Abel Vesa wrote:
> > > Add compatible for both PCIe found on SM8550.
> > > Also add the cnoc_pcie_sf_axi clock needed by the SM8550.
> > > 
> > > Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> > 
> > Reviewed-by: Manivannan Sadhasivam <mani@...nel.org>
> > 
> > > Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> > > ---

> > > diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> > > index 77e5dc7b88ad..30f74bc51dbf 100644
> > > --- a/drivers/pci/controller/dwc/pcie-qcom.c
> > > +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> > > @@ -182,7 +182,7 @@ struct qcom_pcie_resources_2_3_3 {
> > >  
> > >  /* 6 clocks typically, 7 for sm8250 */
> > 
> > Now this comment is outdated ;)
> > 
> 
> Fair point. I'll wait for some more comments before
> I'll send a new version.

The comment is still correct, as several of these clocks are optional
and platform dependant. There's strictly no need to update it as part
of this patch.

> > >  struct qcom_pcie_resources_2_7_0 {
> > > -	struct clk_bulk_data clks[12];
> > > +	struct clk_bulk_data clks[13];
> > >  	int num_clks;
> > >  	struct regulator_bulk_data supplies[2];
> > >  	struct reset_control *pci_reset;
> > > @@ -1208,6 +1208,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
> > >  	res->clks[idx++].id = "noc_aggr_4";
> > >  	res->clks[idx++].id = "noc_aggr_south_sf";
> > >  	res->clks[idx++].id = "cnoc_qx";
> > > +	res->clks[idx++].id = "cnoc_sf_axi";

Johan