imx: kontron-sl-mx8mm: Prepare for I2C display detection in environment script

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@kontron.de>
Reviewed-by: Fabio Estevam <festevam@denx.de>

diff --git a/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi
index e7e900d..5b8b472 100644 (file)
--- a/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-bl-common-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/arch/arm/dts/imx8mm-kontron-bl-osm-s-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-bl-osm-s-u-boot.dtsi
index cd990b1..fac24a2 100644 (file)
--- a/arch/arm/dts/imx8mm-kontron-bl-osm-s-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-bl-osm-s-u-boot.dtsi
@@ -4,3 +4,11 @@
  */
 
 #include "imx8mm-kontron-bl-common-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-bl-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-bl-u-boot.dtsi
index cd990b1..e9fa8d7 100644 (file)
--- a/arch/arm/dts/imx8mm-kontron-bl-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-bl-u-boot.dtsi
@@ -4,3 +4,11 @@
  */
 
 #include "imx8mm-kontron-bl-common-u-boot.dtsi"
+
+&iomuxc {
+       pinctrl_touch: touchgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_SAI1_TXD3_GPIO4_IO15       0x19 /* Touch Reset */
+               >;
+       };
+};

diff --git a/board/kontron/sl-mx8mm/sl-mx8mm.c b/board/kontron/sl-mx8mm/sl-mx8mm.c
index 6411301..4ac430b 100644 (file)
--- a/board/kontron/sl-mx8mm/sl-mx8mm.c
+++ b/board/kontron/sl-mx8mm/sl-mx8mm.c
@@ -126,8 +126,11 @@ int board_late_init(void)
        if (!fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-n802x-som") ||
            !fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-osm-s")) {
                env_set("som_type", "osm-s");
-       else
+               env_set("touch_rst_gpio", "111");
+       } else {
                env_set("som_type", "sl");
+               env_set("touch_rst_gpio", "87");
+       }
 
        return 0;
 }