[PATCH v2 19/19] imx: kontron-sl-mx8mm: Prepare for I2C display detection in environment script

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf at kontron.de>

Enable the I2C bus and set a env variable for the reset GPIO of the touch
controller. This allows us to probe the panel in a script.

Signed-off-by: Frieder Schrempf <frieder.schrempf at kontron.de>
---
Changes in v2:
* new patch
---
 arch/arm/dts/imx8mm-kontron-n801x-s-u-boot.dtsi |  7 +++++++
 arch/arm/dts/imx8mm-kontron-n802x-s-u-boot.dtsi |  8 ++++++++
 arch/arm/dts/imx8mm-kontron-n80xx-s-u-boot.dtsi | 13 +++++++++++--
 board/kontron/sl-mx8mm/sl-mx8mm.c               |  7 +++++--
 4 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/arch/arm/dts/imx8mm-kontron-n801x-s-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-n801x-s-u-boot.dtsi
index e2a5a883256..a00033c8865 100644
--- a/arch/arm/dts/imx8mm-kontron-n801x-s-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-n801x-s-u-boot.dtsi
@@ -5,3 +5,10 @@
 
 #include "imx8mm-kontron-n80xx-s-u-boot.dtsi"
 
+&iomuxc {
+	pinctrl_touch: touchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI5_RXD2_GPIO3_IO23	0x19 /* Touch Reset */
+		>;
+	};
+};
diff --git a/arch/arm/dts/imx8mm-kontron-n802x-s-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-n802x-s-u-boot.dtsi
index 115c4a3d87c..51045e3590c 100644
--- a/arch/arm/dts/imx8mm-kontron-n802x-s-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-n802x-s-u-boot.dtsi
@@ -4,3 +4,11 @@
  */
 
 #include "imx8mm-kontron-n80xx-s-u-boot.dtsi"
+
+&iomuxc {
+	pinctrl_touch: touchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXD3_GPIO4_IO15	0x19 /* Touch Reset */
+		>;
+	};
+};
diff --git a/arch/arm/dts/imx8mm-kontron-n80xx-s-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-n80xx-s-u-boot.dtsi
index e7e900d4fa8..5b8b472159a 100644
--- a/arch/arm/dts/imx8mm-kontron-n80xx-s-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-n80xx-s-u-boot.dtsi
@@ -48,8 +48,17 @@
 
 &i2c2 {
 	status = "okay";
-	u-boot,dm-spl;
-	u-boot,dm-pre-reloc;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+};
+
+&iomuxc {
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_I2C2_SCL		0x400001c3
+			MX8MM_IOMUXC_I2C2_SDA_I2C2_SDA		0x400001c3
+		>;
+	};
 };
 
 &pinctrl_ecspi1 {
diff --git a/board/kontron/sl-mx8mm/sl-mx8mm.c b/board/kontron/sl-mx8mm/sl-mx8mm.c
index c576c58adc0..df9e19f232f 100644
--- a/board/kontron/sl-mx8mm/sl-mx8mm.c
+++ b/board/kontron/sl-mx8mm/sl-mx8mm.c
@@ -123,10 +123,13 @@ int board_init(void)
 
 int board_late_init(void)
 {
-	if (!fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-n802x-som"))
+	if (!fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-n802x-som")) {
 		env_set("som_type", "n802x");
-	else
+		env_set("touch_rst_gpio", "111");
+	} else {
 		env_set("som_type", "n801x");
+		env_set("touch_rst_gpio", "87");
+	}
 
 	return 0;
 }
-- 
2.37.1