On SM8250 additional clock is required for PCIe devices to access NOC.
Update PCIe controller driver to control this clock.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Fixes: e1dd639e374a ("PCI: qcom: Add SM8250 SoC support")
---
drivers/pci/controller/dwc/pcie-qcom.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index affa2713bf80..658d007a764c 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -159,8 +159,9 @@ struct qcom_pcie_resources_2_3_3 {
struct reset_control *rst[7];
};
+#define QCOM_PCIE_2_7_0_MAX_CLOCKS 6
struct qcom_pcie_resources_2_7_0 {
- struct clk_bulk_data clks[6];
+ struct clk_bulk_data clks[QCOM_PCIE_2_7_0_MAX_CLOCKS + 1]; /* + 1 for sf_tbu */
struct regulator_bulk_data supplies[2];
struct reset_control *pci_reset;
struct clk *pipe_clk;
@@ -1153,10 +1154,15 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
res->clks[4].id = "slave_q2a";
res->clks[5].id = "tbu";
- ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks);
+ ret = devm_clk_bulk_get(dev, QCOM_PCIE_2_7_0_MAX_CLOCKS, res->clks);
if (ret < 0)
return ret;
+ /* Optional clock for SM8250 */
+ res->clks[6].clk = devm_clk_get_optional(dev, "ddrss_sf_tbu");
+ if (IS_ERR(res->clks[6].clk))
+ return PTR_ERR(res->clks[6].clk);
+
res->pipe_clk = devm_clk_get(dev, "pipe");
return PTR_ERR_OR_ZERO(res->pipe_clk);
}
--
2.29.2
