linux-kernel - [PATCH 3/4] arm64: dts: imx8mp-evk: add host-wake-gpio property for pci bus

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Message-Id: <20231208091355.1417292-4-sherry.sun@nxp.com>
Date:   Fri,  8 Dec 2023 17:13:54 +0800
From:   Sherry Sun <sherry.sun@....com>
To:     hongxing.zhu@....com, l.stach@...gutronix.de,
        lpieralisi@...nel.org, kw@...ux.com, robh@...nel.org,
        bhelgaas@...gle.com, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com
Cc:     linux-imx@....com, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] arm64: dts: imx8mp-evk: add host-wake-gpio property for pci bus

The host wake pin is a standard feature in the PCIe bus specification,
so we add this property under PCI dts node to enable the host wake
function.

Signed-off-by: Sherry Sun <sherry.sun@....com>
Reviewed-by: Richard Zhu <hongxing.zhu@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index f87fa5a948cc..cc9e5e599a33 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -542,6 +542,7 @@ &pcie {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pcie0>;
 	reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>;
+	host-wake-gpio = <&gpio5 21 GPIO_ACTIVE_LOW>;
 	vpcie-supply = <&reg_pcie0>;
 	status = "okay";
 };
@@ -772,6 +773,7 @@ pinctrl_pcie0: pcie0grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_I2C4_SCL__PCIE_CLKREQ_B	0x60 /* open drain, pull up */
 			MX8MP_IOMUXC_SD1_DATA5__GPIO2_IO07	0x40
+			MX8MP_IOMUXC_I2C4_SDA__GPIO5_IO21	0x1c4
 		>;
 	};
 
-- 
2.34.1