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Message-Id: <20251001-topic-am62-dt-partialio-v6-15-v3-6-7095fe263ece@baylibre.com>
Date: Wed, 01 Oct 2025 16:34:18 +0200
From: "Markus Schneider-Pargmann (TI.com)" <msp@...libre.com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
Tero Kristo <kristo@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Vishal Mahaveer <vishalm@...com>,
Kevin Hilman <khilman@...libre.com>, Dhruva Gole <d-gole@...com>,
Sebin Francis <sebin.francis@...com>, Kendall Willis <k-willis@...com>,
Akashdeep Kaur <a-kaur@...com>,
"Markus Schneider-Pargmann (TI.com)" <msp@...libre.com>
Subject: [PATCH v3 6/6] arm64: dts: ti: k3-am62p5-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.
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) <msp@...libre.com>
---
arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 71 +++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index a064a632680ec69dba9dbe591fd49caeb9ac1111..36116210fbe6111ee8bb9a1736ed02bec0f20b67 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -716,12 +716,52 @@ AM62PX_MCU_IOPAD(0x028, PIN_OUTPUT, 0) /* (D7) WKUP_UART0_TXD */
>;
bootph-all;
};
+
+ mcu_mcan0_tx_pins_default: mcu-mcan0-tx-default-pins {
+ pinctrl-single,pins = <
+ AM62PX_MCU_IOPAD(0x034, PIN_OUTPUT, 0) /* (D6) MCU_MCAN0_TX */
+ >;
+ };
+
+ mcu_mcan0_rx_pins_default: mcu-mcan0-rx-default-pins {
+ pinctrl-single,pins = <
+ AM62PX_MCU_IOPAD(0x038, PIN_INPUT, 0) /* (B3) MCU_MCAN0_RX */
+ >;
+ };
+
+ mcu_mcan0_rx_pins_wakeup: mcu-mcan0-rx-wakeup-pins {
+ pinctrl-single,pins = <
+ AM62PX_MCU_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 = <
+ AM62PX_MCU_IOPAD(0x03c, PIN_OUTPUT, 0) /* (E5) MCU_MCAN1_TX */
+ >;
+ };
+
+ mcu_mcan1_rx_pins_default: mcu-mcan1-rx-default-pins {
+ pinctrl-single,pins = <
+ AM62PX_MCU_IOPAD(0x040, PIN_INPUT, 0) /* (D4) MCU_MCAN1_RX */
+ >;
+ };
+
+ mcu_mcan1_rx_pins_wakeup: mcu-mcan1-rx-wakeup-pins {
+ pinctrl-single,pins = <
+ AM62PX_MCU_IOPAD(0x040, PIN_INPUT | PIN_WKUP_EN, 0) /* (D4) MCU_MCAN1_RX */
+ >;
+ };
};
&wkup_uart0 {
/* WKUP UART0 is used by DM firmware */
pinctrl-names = "default";
pinctrl-0 = <&wkup_uart0_pins_default>;
+ wakeup-source = <&system_io_ddr>,
+ <&system_deep_sleep>,
+ <&system_mcu_only>,
+ <&system_standby>;
status = "reserved";
bootph-all;
};
@@ -763,4 +803,35 @@ &epwm1 {
status = "okay";
};
+&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>;
+ 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_io_ddr>,
+ <&system_deep_sleep>,
+ <&system_mcu_only>,
+ <&system_standby>;
+ status = "okay";
+};
+
+&mcu_uart0 {
+ wakeup-source = <&system_io_ddr>,
+ <&system_deep_sleep>,
+ <&system_mcu_only>,
+ <&system_standby>;
+};
+
#include "k3-am62p-ti-ipc-firmware.dtsi"
--
2.51.0
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