Hi, am62, am62a and am62p support Partial-IO, a poweroff SoC state with a few pin groups being active for wakeup. To support mcu_mcan0 and mcu_mcan1 wakeup for the mentioned SoCs, the series introduces a notion of wake-on-lan for m_can. If the user decides to enable wake-on-lan for a m_can device, the device is set to wakeup enabled. A 'wakeup' pinctrl state is selected to enable wakeup flags for the relevant pins. If wake-on-lan is disabled the default pinctrl is selected. It is based on v6.9-rc1. This series is part of a bigger topic to support Partial-IO on am62, am62a and am62p. Partial-IO is a poweroff state in which some pins are able to wakeup the SoC. In detail MCU m_can and two serial port pins can trigger the wakeup. These two other series are relevant for the support of Partial-IO: - firmware: ti_sci: Partial-IO support - serial: 8250: omap: Add am62 wakeup support A test branch is available here that includes all patches required to test Partial-IO: https://gitlab.baylibre.com/msp8/linux/-/tree/integration/am62-lp-sk-partialio/v6.9?ref_type=heads After enabling Wake-on-LAN the system can be powered off and will enter the Partial-IO state in which it can be woken up by activity on the specific pins: ethtool -s can0 wol p ethtool -s can1 wol p poweroff I tested these patches on am62-lp-sk. Best, Markus Markus Schneider-Pargmann (6): dt-bindings: can: m_can: Add wakeup-source property dt-bindings: can: m_can: Add wakeup pinctrl state can: m_can: Map WoL to device_set_wakeup_enable can: m_can: Support pinctrl wakeup state arm64: dts: ti: k3-am62: Mark mcu_mcan0/1 as wakeup-source arm64: dts: ti: k3-am62a-mcu: Mark mcu_mcan0/1 as wakeup-source Vibhore Vardhan (1): arm64: dts: ti: k3-am62p-mcu: Mark mcu_mcan0/1 as wakeup-source .../bindings/net/can/bosch,m_can.yaml | 20 +++++++++ arch/arm64/boot/dts/ti/k3-am62-mcu.dtsi | 2 + arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi | 2 + arch/arm64/boot/dts/ti/k3-am62p-mcu.dtsi | 2 + drivers/net/can/m_can/m_can.c | 43 +++++++++++++++++++ drivers/net/can/m_can/m_can.h | 4 ++ 6 files changed, 73 insertions(+) -- 2.43.0
