[PATCH] arm64: dts: ti: k3-am62d2-evm: Set wakeup-source system-states

[Kendall Willis]

The CANUART pins of mcu_mcan0, mcu_mcan1, mcu_uart0 and wkup_uart0 are
powered during Partial-IO and I/O Only + DDR and are capable of waking
up the system in these states. Specify the states in which these units
can do a wakeup on this board.

Note that the UARTs are not capable of wakeup in Partial-IO because of
of a UART mux on the board not being powered during Partial-IO.

Add pincontrol definitions for mcu_mcan0 and mcu_mcan1 for wakeup from
Partial-IO. Add these as wakeup pinctrl entries for both devices.

Signed-off-by: Kendall Willis <k-willis at ti.com>
---
This patch is based on a similar commit afb919a6b36b ("arm64: dts: ti:
k3-am62a7-sk: Set wakeup-source system-states") Markus made for the AM62A
SoC.
---
 arch/arm64/boot/dts/ti/k3-am62d2-evm.dts | 69 ++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
index a5d5dc0a7bec8c3a5dfa63e984ae398af3ede7c0..1ee851a646c053b5d6706f885c68058f4c4374b6 100644
--- a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
@@ -199,6 +199,42 @@ led-0 {
 &mcu_pmx0 {
 	status = "okay";
 
+	mcu_mcan0_tx_pins_default: mcu-mcan0-tx-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x0034, PIN_OUTPUT, 0) /* (C7) MCU_MCAN0_TX */
+		>;
+	};
+
+	mcu_mcan0_rx_pins_default: mcu-mcan0-rx-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x0038, PIN_INPUT, 0) /* (E8) MCU_MCAN0_RX */
+		>;
+	};
+
+	mcu_mcan0_rx_pins_wakeup: mcu-mcan0-rx-wakeup-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x0038, PIN_INPUT | PIN_WKUP_EN, 0) /* (E8) MCU_MCAN0_RX */
+		>;
+	};
+
+	mcu_mcan1_tx_pins_default: mcu-mcan1-tx-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x003c, PIN_OUTPUT, 0) /* (D7) MCU_MCAN1_TX */
+		>;
+	};
+
+	mcu_mcan1_rx_pins_default: mcu-mcan1-rx-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x0040, PIN_INPUT, 0) /* (B9) MCU_MCAN1_RX */
+		>;
+	};
+
+	mcu_mcan1_rx_pins_wakeup: mcu-mcan1-rx-wakeup-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x040, PIN_INPUT | PIN_WKUP_EN, 0) /* (B9) MCU_MCAN1_RX */
+		>;
+	};
+
 	pmic_irq_pins_default: pmic-irq-default-pins {
 		pinctrl-single,pins = <
 			AM62DX_IOPAD(0x01f4, PIN_INPUT, 7) /* (F17) EXTINTn.GPIO1_31 */
@@ -228,6 +264,10 @@ AM62DX_MCU_IOPAD(0x0050, PIN_INPUT, 0) /* (E13) WKUP_I2C0_SDA */
 &wkup_uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&wkup_uart0_pins_default>;
+	wakeup-source = <&system_io_ddr>,
+			<&system_deep_sleep>,
+			<&system_mcu_only>,
+			<&system_standby>;
 	bootph-all;
 	status = "reserved";
 };
@@ -737,4 +777,33 @@ &c7x_0 {
 	firmware-name = "am62d-c71_0-fw";
 };
 
+&mcu_mcan0 {
+	pinctrl-names = "default", "wakeup";
+	pinctrl-0 = <&mcu_mcan0_tx_pins_default>, <&mcu_mcan0_rx_pins_default>;
+	pinctrl-1 = <&mcu_mcan0_tx_pins_default>, <&mcu_mcan0_rx_pins_wakeup>;
+	wakeup-source = <&system_partial_io>,
+			<&system_io_ddr>,
+			<&system_deep_sleep>,
+			<&system_mcu_only>,
+			<&system_standby>;
+};
+
+&mcu_mcan1 {
+	pinctrl-names = "default", "wakeup";
+	pinctrl-0 = <&mcu_mcan1_tx_pins_default>, <&mcu_mcan1_rx_pins_default>;
+	pinctrl-1 = <&mcu_mcan1_tx_pins_default>, <&mcu_mcan1_rx_pins_wakeup>;
+	wakeup-source = <&system_partial_io>,
+			<&system_io_ddr>,
+			<&system_deep_sleep>,
+			<&system_mcu_only>,
+			<&system_standby>;
+};
+
+&mcu_uart0 {
+	wakeup-source = <&system_io_ddr>,
+			<&system_deep_sleep>,
+			<&system_mcu_only>,
+			<&system_standby>;
+};
+
 #include "k3-am62a-ti-ipc-firmware.dtsi"

---
base-commit: af98e93c5c39e6d0b87b42f0a32dd3066f795718
change-id: 20260212-am62d-can-wkup-dts-a45edbb5361e

Best regards,
-- 
Kendall Willis <k-willis at ti.com>