From b64da5b16ab3c5dcc6e95180891d1c10eda83ffd Mon Sep 17 00:00:00 2001 From: Kendall Willis Date: Fri, 16 Jan 2026 13:55:49 -0600 Subject: [PATCH] serial: 8250: omap: set out-of-band wakeup if wakeup pinctrl exists In TI K3 SoCs, I/O daisy chaining is used to allow wakeup from UART when the UART controller is off. Set UART device as wakeup capable using out-of-band wakeup if the 'wakeup' pinctrl state exists and the device may wakeup. Reviewed-by: Dhruva Gole Signed-off-by: Kendall Willis Link: https://patch.msgid.link/20260116-uart-wakeup-v2-1-0078ae9996e4@ti.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_omap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index 272bc07c9a6b..8c88e0f47cd9 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1382,6 +1382,8 @@ static int omap8250_select_wakeup_pinctrl(struct device *dev, if (!device_may_wakeup(dev)) return 0; + device_set_out_band_wakeup(dev); + return pinctrl_select_state(priv->pinctrl, priv->pinctrl_wakeup); } -- 2.47.3