linux-kernel - [PATCH v4 8/9] PCI: imx6: Add i.MX8MQ i.MX8Q and i.MX95 PCIe PM support

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Message-Id: <1728981213-8771-9-git-send-email-hongxing.zhu@nxp.com>
Date: Tue, 15 Oct 2024 16:33:32 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: kw@...ux.com,
	manivannan.sadhasivam@...aro.org,
	bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	frank.li@....com,
	l.stach@...gutronix.de,
	robh+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	festevam@...il.com,
	s.hauer@...gutronix.de
Cc: hongxing.zhu@....com,
	linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	kernel@...gutronix.de,
	imx@...ts.linux.dev
Subject: [PATCH v4 8/9] PCI: imx6: Add i.MX8MQ i.MX8Q and i.MX95 PCIe PM support

Add iMX8MQ i.MX8Q and i.MX95 PCIe suspend/resume support.

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
Reviewed-by: Frank Li <Frank.Li@....com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index baa853d84b4d..1f873ac6eed2 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1497,7 +1497,8 @@ static const struct imx_pcie_drvdata drvdata[] = {
 	[IMX8MQ] = {
 		.variant = IMX8MQ,
 		.flags = IMX_PCIE_FLAG_HAS_APP_RESET |
-			 IMX_PCIE_FLAG_HAS_PHY_RESET,
+			 IMX_PCIE_FLAG_HAS_PHY_RESET |
+			 IMX_PCIE_FLAG_SUPPORTS_SUSPEND,
 		.gpr = "fsl,imx8mq-iomuxc-gpr",
 		.clk_names = imx8mq_clks,
 		.clks_cnt = ARRAY_SIZE(imx8mq_clks),
@@ -1535,13 +1536,15 @@ static const struct imx_pcie_drvdata drvdata[] = {
 	[IMX8Q] = {
 		.variant = IMX8Q,
 		.flags = IMX_PCIE_FLAG_HAS_PHYDRV |
-			 IMX_PCIE_FLAG_CPU_ADDR_FIXUP,
+			 IMX_PCIE_FLAG_CPU_ADDR_FIXUP |
+			 IMX_PCIE_FLAG_SUPPORTS_SUSPEND,
 		.clk_names = imx8q_clks,
 		.clks_cnt = ARRAY_SIZE(imx8q_clks),
 	},
 	[IMX95] = {
 		.variant = IMX95,
-		.flags = IMX_PCIE_FLAG_HAS_SERDES,
+		.flags = IMX_PCIE_FLAG_HAS_SERDES |
+			 IMX_PCIE_FLAG_SUPPORTS_SUSPEND,
 		.clk_names = imx95_clks,
 		.clks_cnt = ARRAY_SIZE(imx95_clks),
 		.ltssm_off = IMX95_PE0_GEN_CTRL_3,
-- 
2.37.1