linux-kernel - [PATCH v3 1/3] arm64: dts: ti: k3-am62p5-sk: Remove the unused cfg in USB1

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Message-ID: <20250902071917.1616729-2-a-kaur@ti.com>
Date: Tue, 2 Sep 2025 12:49:15 +0530
From: Akashdeep Kaur <a-kaur@...com>
To: <praneeth@...com>, <nm@...com>, <afd@...com>, <vigneshr@...com>,
        <d-gole@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: <vishalm@...com>, <sebin.francis@...com>
Subject: [PATCH v3 1/3] arm64: dts: ti: k3-am62p5-sk: Remove the unused cfg in USB1_DRVVBUS

After the SoC has entered the DeepSleep low power mode, USB1 can be used
to wakeup the SoC based on USB events triggered by USB devices. This
requires that the pin corresponding to the Type-A connector remains pulled
up even after the SoC has entered the DeepSleep low power mode.
For that, either DeepSleep pullup configuration can be selected or the pin
can have the same configuration that it had when SoC was in active mode.
But, in order for DeepSleep configuration to take effect, the DeepSleep
control bit has to be enabled.
Remove the unnecessary DeepSleep state configuration from USB1_DRVBUS pin,
as the DeepSleep control bit is not set and the active configuration is
sufficient to keep the pin pulled up. This simplifies the setup and removes
redundant configuration.

This reverts commit 115290c112952db27009668aa7ae2f29920704f0.

Signed-off-by: Akashdeep Kaur <a-kaur@...com>
---
 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index 899da7896563..e8f0ac2c55e2 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -360,7 +360,7 @@ AM62PX_IOPAD(0x01b0, PIN_OUTPUT, 2) /* (G20) MCASP0_ACLKR.UART1_TXD */

 	main_usb1_pins_default: main-usb1-default-pins {
 		pinctrl-single,pins = <
-			AM62PX_IOPAD(0x0258, PIN_INPUT | PIN_DS_PULLUD_ENABLE | PIN_DS_PULL_UP, 0) /* (G21) USB1_DRVVBUS */
+			AM62PX_IOPAD(0x0258, PIN_INPUT, 0) /* (G21) USB1_DRVVBUS */
 		>;
 	};

-- 
2.34.1