[U-Boot] [PATCH v3 05/18] arm: dts: k3-am654-base-board: Enable wkup_i2c0 across all boot stages

[Andreas Dannenberg]

To enable the use of an EEPROM-based board detection scheme we need to
be able to access the I2C bus associated with the EEPROMs across all
3 stages of U-Boot: R5 SPL, A53 SPL, and A53 U-Boot (proper). So go
ahead and add/update the wkup_i2c0 peripheral module DTS definitions
and its associated pinmux node accordingly.

Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 arch/arm/dts/k3-am65.dtsi                    |  1 +
 arch/arm/dts/k3-am654-base-board-u-boot.dtsi | 12 ++++++++++++
 arch/arm/dts/k3-am654-base-board.dts         | 15 +++++++++++++++
 arch/arm/dts/k3-am654-r5-base-board.dts      | 13 +++++++++++++
 4 files changed, 41 insertions(+)

diff --git a/arch/arm/dts/k3-am65.dtsi b/arch/arm/dts/k3-am65.dtsi
index 5bcf6e0693..50f4be2047 100644
--- a/arch/arm/dts/k3-am65.dtsi
+++ b/arch/arm/dts/k3-am65.dtsi
@@ -8,6 +8,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/pinctrl/k3.h>
 
 / {
 	model = "Texas Instruments K3 AM654 SoC";
diff --git a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
index 67535f76a5..e21562252f 100644
--- a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
@@ -110,6 +110,14 @@
 	u-boot,dm-spl;
 };
 
+&wkup_pmx0 {
+	u-boot,dm-spl;
+
+	wkup_i2c0_pins_default {
+		u-boot,dm-spl;
+	};
+};
+
 &main_pmx0 {
 	u-boot,dm-spl;
 	main_uart0_pins_default: main_uart0_pins_default {
@@ -179,3 +187,7 @@
 	sdhci-caps-mask = <0x7 0x0>;
 	ti,driver-strength-ohm = <50>;
 };
+
+&wkup_i2c0 {
+	u-boot,dm-spl;
+};
diff --git a/arch/arm/dts/k3-am654-base-board.dts b/arch/arm/dts/k3-am654-base-board.dts
index ab233916c6..248d60e89b 100644
--- a/arch/arm/dts/k3-am654-base-board.dts
+++ b/arch/arm/dts/k3-am654-base-board.dts
@@ -55,6 +55,15 @@
 	};
 };
 
+&wkup_pmx0 {
+	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+		pinctrl-single,pins = <
+			AM65X_WKUP_IOPAD(0x00e0, PIN_INPUT, 0) /* (AC7) WKUP_I2C0_SCL */
+			AM65X_WKUP_IOPAD(0x00e4, PIN_INPUT, 0) /* (AD6) WKUP_I2C0_SDA */
+		>;
+	};
+};
+
 &sdhci0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mmc0_pins_default>;
@@ -62,3 +71,9 @@
 	non-removable;
 	ti,driver-strength-ohm = <50>;
 };
+
+&wkup_i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+};
diff --git a/arch/arm/dts/k3-am654-r5-base-board.dts b/arch/arm/dts/k3-am654-r5-base-board.dts
index 8deda328d0..9d9b3d5852 100644
--- a/arch/arm/dts/k3-am654-r5-base-board.dts
+++ b/arch/arm/dts/k3-am654-r5-base-board.dts
@@ -136,6 +136,13 @@
 		>;
 		u-boot,dm-spl;
 	};
+
+	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+		pinctrl-single,pins = <
+			AM65X_WKUP_IOPAD(0x00e0, PIN_INPUT, 0) /* (AC7) WKUP_I2C0_SCL */
+			AM65X_WKUP_IOPAD(0x00e4, PIN_INPUT, 0) /* (AD6) WKUP_I2C0_SDA */
+		>;
+	};
 };
 
 &main_pmx0 {
@@ -176,3 +183,9 @@
 	/delete-property/ power-domains;
 	ti,driver-strength-ohm = <50>;
 };
+
+&wkup_i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+};
-- 
2.17.1