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PCI: imx6: Fix reference clock source selection for i.MX95

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In the PCIe PHY init for the i.MX95, the reference clock source selection
uses a conditional instead of always passing the mask. This currently
breaks functionality if the internal refclk is used.

To fix this issue, always pass IMX95_PCIE_REF_USE_PAD as the mask and clear
bit if external refclk is not used. This essentially swaps the parameters.

Fixes: d8574ce57d ("PCI: imx6: Add external reference clock input mode support")
Signed-off-by: Franz Schnyder <franz.schnyder@toradex.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Richard Zhu <hongxing.zhu@nxp.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260325093118.684142-1-fra.schnyder@gmail.com
This commit is contained in:
Franz Schnyder 2026-03-25 10:31:16 +01:00 committed by Bjorn Helgaas
parent 3a4e8302e7
commit 88cc4cbe08
1 changed files with 2 additions and 2 deletions
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4
drivers/pci/controller/dwc/pci-imx6.c
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@ -270,8 +270,8 @@ static int imx95_pcie_init_phy(struct imx_pcie *imx_pcie)
IMX95_PCIE_PHY_CR_PARA_SEL);
regmap_update_bits(imx_pcie->iomuxc_gpr, IMX95_PCIE_PHY_GEN_CTRL,
ext ? IMX95_PCIE_REF_USE_PAD : 0,
IMX95_PCIE_REF_USE_PAD);
IMX95_PCIE_REF_USE_PAD,
ext ? IMX95_PCIE_REF_USE_PAD : 0);
regmap_update_bits(imx_pcie->iomuxc_gpr, IMX95_PCIE_SS_RW_REG_0,
IMX95_PCIE_REF_CLKEN,
ext ? 0 : IMX95_PCIE_REF_CLKEN);