linux-kernel - [PATCH v2 08/12] arm64: dts: imx8mp-kontron: Fix GPIO labels for latest BL board

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Message-ID: <20250721100701.115548-9-frieder@fris.de>
Date: Mon, 21 Jul 2025 12:05:42 +0200
From: Frieder Schrempf <frieder@...s.de>
To: linux-arm-kernel@...ts.infradead.org,
	Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-kernel@...r.kernel.org,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>
Cc: Frieder Schrempf <frieder.schrempf@...tron.de>,
	Annette Kobou <annette.kobou@...tron.de>,
	Fabio Estevam <festevam@...il.com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: [PATCH v2 08/12] arm64: dts: imx8mp-kontron: Fix GPIO labels for latest BL board

From: Frieder Schrempf <frieder.schrempf@...tron.de>

Hardware rev 3 changed a few signals. Reflect these changes in
the GPIO labels.

* digital IOs were moved to GPIO expander
* remove labels for unused signals
* add labels for TFT, CSI and USB hub IOs

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 .../dts/freescale/imx8mp-kontron-bl-osm-s.dts | 30 +++++++++----------
 1 file changed, 14 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-kontron-bl-osm-s.dts b/arch/arm64/boot/dts/freescale/imx8mp-kontron-bl-osm-s.dts
index 4aa5c261b865d..bbcd76e9e9913 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-kontron-bl-osm-s.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-kontron-bl-osm-s.dts
@@ -123,38 +123,36 @@ &gpio2 {
 
 /*
  * Rename SoM signals according to board usage:
- *   GPIO_B_0      -> DIO1_OUT
- *   GPIO_B_1      -> DIO2_OUT
+ *   GPIO_B_0      -> IO_EXP_INT
+ *   GPIO_B_1      -> IO_EXP_RST
  */
 &gpio3 {
 	gpio-line-names = "PCIE_WAKE", "PCIE_CLKREQ", "PCIE_A_PERST", "SDIO_B_D5",
 			  "SDIO_B_D6", "SDIO_B_D7", "SPI_A_WP", "SPI_A_HOLD",
 			  "UART_B_RTS", "UART_B_CTS", "SDIO_B_D0", "SDIO_B_D1",
 			  "SDIO_B_D2", "SDIO_B_D3", "SDIO_B_WP", "SDIO_B_D4",
-			  "PCIE_SM_ALERT", "SDIO_B_CLK", "SDIO_B_CMD", "DIO1_OUT",
-			  "DIO2_OUT", "", "BOOT_SEL0", "BOOT_SEL1",
+			  "PCIE_SM_ALERT", "SDIO_B_CLK", "SDIO_B_CMD", "IO_EXP_INT",
+			  "IO_EXP_RST", "", "BOOT_SEL0", "BOOT_SEL1",
 			  "", "", "SDIO_B_CD", "SDIO_B_PWR_EN",
 			  "HDMI_CEC", "HDMI_HPD";
 };
 
 /*
- * Rename SoM signals according to board usage:
- *   GPIO_B_5      -> DIO2_IN
- *   GPIO_B_6      -> DIO3_IN
- *   GPIO_B_7      -> DIO4_IN
- *   GPIO_B_3      -> DIO4_OUT
- *   GPIO_B_4      -> DIO1_IN
- *   GPIO_B_2      -> DIO3_OUT
+ * Rename SoM signals according to board usage and remove labels for unsed pins:
+ *   GPIO_A_6      -> TFT_RESET
+ *   GPIO_A_7      -> TFT_STBY
+ *   GPIO_B_3      -> CSI_ENABLE
+ *   GPIO_B_2      -> USB_HUB_RST
  */
 &gpio4 {
-	gpio-line-names = "DIO2_IN", "DIO3_IN", "DIO4_IN", "GPIO_C_0",
+	gpio-line-names = "", "", "", "",
 			  "ETH_A_MDC", "ETH_A_MDIO", "ETH_A_RXD0", "ETH_A_RXD1",
 			  "ETH_A_RXD2", "ETH_A_RXD3", "ETH_A_RX_DV", "ETH_A_RX_CLK",
 			  "ETH_A_TXD0", "ETH_A_TXD1", "ETH_A_TXD2", "ETH_A_TXD3",
-			  "ETH_A_TX_EN", "ETH_A_TX_CLK", "DIO4_OUT", "DIO1_IN",
-			  "DIO3_OUT", "GPIO_A_6", "CAN_A_TX", "UART_A_CTS",
+			  "ETH_A_TX_EN", "ETH_A_TX_CLK", "CSI_ENABLE", "",
+			  "USB_HUB_RST", "TFT_RESET", "CAN_A_TX", "UART_A_CTS",
 			  "UART_A_RTS", "CAN_A_RX", "CAN_B_TX", "CAN_B_RX",
-			  "GPIO_A_7", "CARRIER_PWR_EN", "I2S_A_DATA_IN", "I2S_LRCLK";
+			  "TFT_STBY", "CARRIER_PWR_EN", "I2S_A_DATA_IN", "I2S_LRCLK";
 };
 
 /*
@@ -325,4 +323,4 @@ pinctrl_usb_hub: usbhubgrp {
 			MX8MP_IOMUXC_NAND_DQS__GPIO3_IO14		0x46
 		>;
 	};
-};
\ No newline at end of file
+};
-- 
2.50.1