linux-kernel - [PATCH] arm64: dts: imx8mn-var-som-symphony: adapt FEC pinctrl for SOMs with onboard PHY

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Message-Id: <20230529193525.1034378-1-hugo@hugovil.com>
Date:   Mon, 29 May 2023 15:35:26 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     hugo@...ovil.com, Hugo Villeneuve <hvilleneuve@...onoff.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: imx8mn-var-som-symphony: adapt FEC pinctrl for SOMs with onboard PHY

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

The VAR SOM symphony carrier board can be used with SOMs which have a
soldered ethernet PHY onboard and with SOMs which don't have one.

For SOMs with an onboard PHY, the PHY on the cartrier board is not
used, and GPIO1_IO9 is used as a reset line to the onboard PHY.

For SOMs without an onboard PHY, the PHY on the carrier board is
used. For this configuration, pca9534 GPIO 5 (located on the carrier
board) is used as a reset line to the PHY, and GPIO1_IO9 is not
used.

GPIO1_IO9 is not connected to any user-accessible pins or functions,
and leaving it enabled in the mux pinctrl for both configurations is
safe.

Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 .../dts/freescale/imx8mn-var-som-symphony.dts | 40 -------------------
 1 file changed, 40 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
index 3ed7021a487c..406a711486da 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
@@ -152,46 +152,6 @@ &usbotg1 {
 	extcon = <&extcon_usbotg1>, <&extcon_usbotg1>;
 };
 
-&pinctrl_fec1 {
-	fsl,pins = <
-		MX8MN_IOMUXC_ENET_MDC_ENET1_MDC			0x3
-		MX8MN_IOMUXC_ENET_MDIO_ENET1_MDIO		0x3
-		MX8MN_IOMUXC_ENET_TD3_ENET1_RGMII_TD3		0x1f
-		MX8MN_IOMUXC_ENET_TD2_ENET1_RGMII_TD2		0x1f
-		MX8MN_IOMUXC_ENET_TD1_ENET1_RGMII_TD1		0x1f
-		MX8MN_IOMUXC_ENET_TD0_ENET1_RGMII_TD0		0x1f
-		MX8MN_IOMUXC_ENET_RD3_ENET1_RGMII_RD3		0x91
-		MX8MN_IOMUXC_ENET_RD2_ENET1_RGMII_RD2		0x91
-		MX8MN_IOMUXC_ENET_RD1_ENET1_RGMII_RD1		0x91
-		MX8MN_IOMUXC_ENET_RD0_ENET1_RGMII_RD0		0x91
-		MX8MN_IOMUXC_ENET_TXC_ENET1_RGMII_TXC		0x1f
-		MX8MN_IOMUXC_ENET_RXC_ENET1_RGMII_RXC		0x91
-		MX8MN_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
-		MX8MN_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
-		/* Remove the MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9 as not used */
-	>;
-};
-
-&pinctrl_fec1_sleep {
-	fsl,pins = <
-		MX8MN_IOMUXC_ENET_MDC_GPIO1_IO16		0x120
-		MX8MN_IOMUXC_ENET_MDIO_GPIO1_IO17		0x120
-		MX8MN_IOMUXC_ENET_TD3_GPIO1_IO18		0x120
-		MX8MN_IOMUXC_ENET_TD2_GPIO1_IO19		0x120
-		MX8MN_IOMUXC_ENET_TD1_GPIO1_IO20		0x120
-		MX8MN_IOMUXC_ENET_TD0_GPIO1_IO21		0x120
-		MX8MN_IOMUXC_ENET_RD3_GPIO1_IO29		0x120
-		MX8MN_IOMUXC_ENET_RD2_GPIO1_IO28		0x120
-		MX8MN_IOMUXC_ENET_RD1_GPIO1_IO27		0x120
-		MX8MN_IOMUXC_ENET_RD0_GPIO1_IO26		0x120
-		MX8MN_IOMUXC_ENET_TXC_GPIO1_IO23		0x120
-		MX8MN_IOMUXC_ENET_RXC_GPIO1_IO25		0x120
-		MX8MN_IOMUXC_ENET_RX_CTL_GPIO1_IO24		0x120
-		MX8MN_IOMUXC_ENET_TX_CTL_GPIO1_IO22		0x120
-		/* Remove the MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9 as not used */
-	>;
-};
-
 &iomuxc {
 	pinctrl_captouch: captouchgrp {
 		fsl,pins = <

base-commit: 8b817fded42d8fe3a0eb47b1149d907851a3c942
-- 
2.30.2