Re: [PATCH v3 4/7] PCI: qcom: Add support for IPQ9574

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On 4/15/24 15:04, Dmitry Baryshkov wrote:
On Mon, 15 Apr 2024 at 21:22, Alexandru Gagniuc <mr.nuke.me@xxxxxxxxx> wrote:

Add support for the PCIe on IPQ9574. The main difference from ipq6018
is that the "iface" clock is not necessarry. Add a special case in
qcom_pcie_get_resources_2_9_0() to handle this.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@xxxxxxxxx>
---
  drivers/pci/controller/dwc/pcie-qcom.c | 13 +++++++++----
  1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 14772edcf0d3..10560d6d6336 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1101,15 +1101,19 @@ static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie)
         struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0;
         struct dw_pcie *pci = pcie->pci;
         struct device *dev = pci->dev;
-       int ret;
+       int ret, num_clks = ARRAY_SIZE(res->clks) - 1;

-       res->clks[0].id = "iface";
+       res->clks[0].id = "rchng";
         res->clks[1].id = "axi_m";
         res->clks[2].id = "axi_s";
         res->clks[3].id = "axi_bridge";
-       res->clks[4].id = "rchng";

-       ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks);
+       if (!of_device_is_compatible(dev->of_node, "qcom,pcie-ipq9574")) {
+               res->clks[4].id = "iface";
+               num_clks++;
+       }
+
+       ret = devm_clk_bulk_get(dev, num_clks, res->clks);

Just use devm_clk_bulk_get_optional() here.

Thank you! I wasn't sure if this was the correct solution here. I will get this updated in v4.

Alex

         if (ret < 0)
                 return ret;

@@ -1664,6 +1668,7 @@ static const struct of_device_id qcom_pcie_match[] = {
         { .compatible = "qcom,pcie-ipq8064-v2", .data = &cfg_2_1_0 },
         { .compatible = "qcom,pcie-ipq8074", .data = &cfg_2_3_3 },
         { .compatible = "qcom,pcie-ipq8074-gen3", .data = &cfg_2_9_0 },
+       { .compatible = "qcom,pcie-ipq9574", .data = &cfg_2_9_0 },
         { .compatible = "qcom,pcie-msm8996", .data = &cfg_2_3_2 },
         { .compatible = "qcom,pcie-qcs404", .data = &cfg_2_4_0 },
         { .compatible = "qcom,pcie-sa8540p", .data = &cfg_sc8280xp },
--
2.40.1








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