From: Markus Schneider-Pargmann (TI.com) Date: Mon, 3 Nov 2025 12:39:31 +0000 (+0100) Subject: arm64: dts: ti: k3-am62-lp-sk: Set wakeup-source system-states X-Git-Tag: v6.19-rc1~100^2~18^2~13 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f2f34b619ad9f3934bcf7486a61ff70d18bf420;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: ti: k3-am62-lp-sk: Set wakeup-source system-states 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. As I/O Only + DDR is not supported on AM62x, the UARTs are not added in this patch. 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: Markus Schneider-Pargmann (TI.com) Link: https://patch.msgid.link/20251103-topic-am62-dt-partialio-v6-15-v5-4-b8d9ff5f2742@baylibre.com Signed-off-by: Vignesh Raghavendra --- diff --git a/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts b/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts index ecfba05fe5c27..cb63db337b2bc 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts @@ -276,3 +276,63 @@ &gpmc0 { ranges = <0 0 0x00 0x51000000 0x01000000>; /* CS0 space. Min partition = 16MB */ }; + +&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_deep_sleep>, + <&system_mcu_only>, + <&system_standby>; + status = "okay"; +}; + +&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_deep_sleep>, + <&system_mcu_only>, + <&system_standby>; + status = "okay"; +}; + +&mcu_pmx0 { + mcu_mcan0_tx_pins_default: mcu-mcan0-tx-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x034, PIN_OUTPUT, 0) /* (D6) MCU_MCAN0_TX */ + >; + }; + + mcu_mcan0_rx_pins_default: mcu-mcan0-rx-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x038, PIN_INPUT, 0) /* (B3) MCU_MCAN0_RX */ + >; + }; + + mcu_mcan0_rx_pins_wakeup: mcu-mcan0-rx-wakeup-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x038, PIN_INPUT | PIN_WKUP_EN, 0) /* (B3) MCU_MCAN0_RX */ + >; + }; + + mcu_mcan1_tx_pins_default: mcu-mcan1-tx-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x03c, PIN_OUTPUT, 0) /* (E5) MCU_MCAN1_TX */ + >; + }; + + mcu_mcan1_rx_pins_default: mcu-mcan1-rx-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x040, PIN_INPUT, 0) /* (D4) MCU_MCAN1_RX */ + >; + }; + + mcu_mcan1_rx_pins_wakeup: mcu-mcan1-rx-wakeup-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x040, PIN_INPUT | PIN_WKUP_EN, 0) /* (D4) MCU_MCAN1_RX */ + >; + }; +};