[PATCH v8 4/8] PCI: imx6: Disable iMX6QDL PCIe REF clock when disable PCIe clocks

Richard Zhu
2022-02-25T03:53:14Z

When disable PCIe clocks, disable i.MX6QDL PCIe REF clock too.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
drivers/pci/controller/dwc/pci-imx6.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 99fc22d1d55e..0f1b8c873a4a 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -540,6 +540,14 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
clk_disable_unprepare(imx6_pcie->pcie_bus);

switch (imx6_pcie->drvdata->variant) {
+ case IMX6Q:
+ case IMX6QP:
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
+ IMX6Q_GPR1_PCIE_REF_CLK_EN, 0);
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
+ IMX6Q_GPR1_PCIE_TEST_PD,
+ IMX6Q_GPR1_PCIE_TEST_PD);
+ break;
case IMX6SX:
clk_disable_unprepare(imx6_pcie->pcie_inbound_axi);
break;
--
2.25.1