linux-kernel - [PATCH 02/10] ARM: dts: imx6qdl-kontron-samx6i: fix PHY reset

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Date: Tue,  4 Jun 2024 15:59:26 +0200
From: Michael Walle <mwalle@...nel.org>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Li Yang <leoyang.li@....com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Priit Laes <plaes@...es.org>,
	Michael Grzeschik <m.grzeschik@...gutronix.de>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	Michael Walle <mwalle@...nel.org>
Subject: [PATCH 02/10] ARM: dts: imx6qdl-kontron-samx6i: fix PHY reset

The PHY reset line is connected to both the SoC (GPIO1_25) and
the CPLD. We must not use the GPIO1_25 as it will drive against
the output buffer of the CPLD. Instead there is another GPIO
(GPIO2_01), an input to the CPLD, which will tell the CPLD to
assert the PHY reset line.

Fixes: 2a51f9dae13d ("ARM: dts: imx6qdl-kontron-samx6i: Add iMX6-based Kontron SMARC-sAMX6i module")
Fixes: 5694eed98cca ("ARM: dts: imx6qdl-kontron-samx6i: move phy reset into phy-node")
Signed-off-by: Michael Walle <mwalle@...nel.org>
---
 arch/arm/boot/dts/nxp/imx/imx6qdl-kontron-samx6i.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-kontron-samx6i.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-kontron-samx6i.dtsi
index d8c1dfb8c9ab..d6c049b9a9c6 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-kontron-samx6i.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-kontron-samx6i.dtsi
@@ -269,7 +269,7 @@ mdio {
 		ethphy: ethernet-phy@1 {
 			compatible = "ethernet-phy-ieee802.3-c22";
 			reg = <1>;
-			reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
+			reset-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <1000>;
 		};
 	};
@@ -516,7 +516,7 @@ MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b0b0
 			MX6QDL_PAD_ENET_MDIO__ENET_MDIO       0x1b0b0
 			MX6QDL_PAD_ENET_MDC__ENET_MDC         0x1b0b0
 			MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK  0x1b0b0
-			MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25    0x1b0b0 /* RST_GBE0_PHY# */
+			MX6QDL_PAD_NANDF_D1__GPIO2_IO01       0x1b0b0 /* RST_GBE0_PHY# */
 		>;
 	};
 
-- 
2.39.2