linux-kernel - [PATCH] arm64: dts: ti: k3-am62p5-sk: Remove CTS/RTS from wkup

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Message-ID: <20240826-am62p-v1-1-b713b48628d1@ti.com>
Date: Mon, 26 Aug 2024 13:07:48 -0500
From: Bryan Brattlof <bb@...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>, Vibhore Vardhan <vibhore@...com>,
        Bryan
 Brattlof <bb@...com>
Subject: [PATCH] arm64: dts: ti: k3-am62p5-sk: Remove CTS/RTS from
 wkup_uart0 pinctrl

From: Vibhore Vardhan <vibhore@...com>

wkup_uart0 is a reserved node that is used by Device Manager firmware.
Enabling pinctrl for CTS and RTS breaks the wakeup functionality of
wkup_uart0. Hence they have been dropped.

Signed-off-by: Vibhore Vardhan <vibhore@...com>
Signed-off-by: Bryan Brattlof <bb@...com>
---
 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index ff65955551a32..3efa12bb72546 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -645,8 +645,6 @@ &mcu_pmx0 {
 
 	wkup_uart0_pins_default: wkup-uart0-default-pins {
 		pinctrl-single,pins = <
-			AM62PX_MCU_IOPAD(0x02c, PIN_INPUT, 0)	/* (C7) WKUP_UART0_CTSn */
-			AM62PX_MCU_IOPAD(0x030, PIN_OUTPUT, 0)	/* (C6) WKUP_UART0_RTSn */
 			AM62PX_MCU_IOPAD(0x024, PIN_INPUT, 0)	/* (D8) WKUP_UART0_RXD */
 			AM62PX_MCU_IOPAD(0x028, PIN_OUTPUT, 0)	/* (D7) WKUP_UART0_TXD */
 		>;

---
base-commit: 182a862560097dec7adf774af58076984cd6c1ed
change-id: 20240823-am62p-5713af1c93e0

Best regards,
-- 
Bryan Brattlof <bb@...com>