Commit f81dd043 authored by Richard Zhu's avatar Richard Zhu Committed by Lorenzo Pieralisi
Browse files

PCI: imx6: Enable i.MX6QP PCIe power management support 

i.MX6QP PCIe supports the reset logic, thus it can reset itself to the
initialized state when exit from L2 or L3 states.

Enable the i.MX6QP PCIe suspend/resume operations support.

Link: https://lore.kernel.org/r/1645425237-4071-2-git-send-email-hongxing.zhu@nxp.com


Signed-off-by: default avatarRichard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarLucas Stach <l.stach@pengutronix.de>
parent f81f095e

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

+3 −1
Original line number Diff line number Diff line
@@ -917,6 +917,7 @@ static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie) 
	/* Others poke directly at IOMUXC registers */

	switch (imx6_pcie->drvdata->variant) {

	case IMX6SX:

	case IMX6QP:

		regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,

				IMX6SX_GPR12_PCIE_PM_TURN_OFF,

				IMX6SX_GPR12_PCIE_PM_TURN_OFF);
@@ -1246,7 +1247,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { 
	[IMX6QP] = {

		.variant = IMX6QP,

		.flags = IMX6_PCIE_FLAG_IMX6_PHY |

			 IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,

			 IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE |

			 IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,

		.dbi_length = 0x200,

	},

	[IMX7D] = {