Unverified Commit 5214ff22 authored by Richard Zhu's avatar Richard Zhu Committed by Krzysztof Wilczyński
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PCI: imx6: Fix establish link failure in EP mode for i.MX8MM and i.MX8MP 

Add IMX6_PCIE_FLAG_HAS_APP_RESET flag to IMX8MM_EP and IMX8MP_EP drvdata.

This flag was overlooked during code restructuring. It is crucial to
release the app-reset from the System Reset Controller before initiating
LTSSM to rectify the issue.

Fixes: 0c9651c2 ("PCI: imx6: Simplify reset handling by using *_FLAG_HAS_*_RESET")
Link: https://lore.kernel.org/linux-pci/20240729-pci2_upstream-v8-1-b68ee5ef2b4d@nxp.com


Signed-off-by: default avatarRichard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: default avatarFrank Li <Frank.Li@nxp.com>
[kwilczynski: commit log]
Signed-off-by: default avatarKrzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: <stable@vger.kernel.org> # 6.9+
parent 8400291e

drivers/pci/controller/dwc/pci-imx6.c

+4 −2
Original line number Diff line number Diff line
@@ -1562,7 +1562,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { 
	},

	[IMX8MM_EP] = {

		.variant = IMX8MM_EP,

		.flags = IMX6_PCIE_FLAG_HAS_PHYDRV,

		.flags = IMX6_PCIE_FLAG_HAS_APP_RESET |

			 IMX6_PCIE_FLAG_HAS_PHYDRV,

		.mode = DW_PCIE_EP_TYPE,

		.gpr = "fsl,imx8mm-iomuxc-gpr",

		.clk_names = imx8mm_clks,
@@ -1573,7 +1574,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { 
	},

	[IMX8MP_EP] = {

		.variant = IMX8MP_EP,

		.flags = IMX6_PCIE_FLAG_HAS_PHYDRV,

		.flags = IMX6_PCIE_FLAG_HAS_APP_RESET |

			 IMX6_PCIE_FLAG_HAS_PHYDRV,

		.mode = DW_PCIE_EP_TYPE,

		.gpr = "fsl,imx8mp-iomuxc-gpr",

		.clk_names = imx8mm_clks,