linux-kernel - [PATCH v1 1/3] arm64: dts: rockchip: rk3588-rock-5b-5bp-5t: Correct Type-C pin bias settings

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Message-ID: <20260103083232.9510-2-linux.amoon@gmail.com>
Date: Sat,  3 Jan 2026 14:01:17 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
	FUKAUMI Naoki <naoki@...xa.com>,
	Diederik de Haas <didi.debian@...ow.org>,
	Yongbo Zhang <giraffesnn123@...il.com>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Rockchip SoC support),
	linux-rockchip@...ts.infradead.org (open list:ARM/Rockchip SoC support),
	linux-kernel@...r.kernel.org (open list),
	linux-usb@...r.kernel.org (open list:USB TYPEC CLASS)
Cc: Anand Moon <linux.amoon@...il.com>
Subject: [PATCH v1 1/3] arm64: dts: rockchip: rk3588-rock-5b-5bp-5t: Correct Type-C pin bias settings

As pre FUSB302 datasheet interrupt line (INT_N) is an open-drain,
active-low signal. It requires a pull-up resistor to maintain a stable
high state when deasserted. Similarly, the TYPEC5V_PWREN_H enable signal
requires a pull-down resistor to ensure it defaults to a low state,
preventing unintended power delivery during the boot sequence.

Update the pinctrl entries to use pcfg_pull_up for usbc0_int and
pcfg_pull_down for vbus5v0_typec_en to align with the hardware's
electrical requirements.

Cc: Sebastian Reichel <sebastian.reichel@...labora.com>
Fixes: 67b2c15d8fb3 ("arm64: dts: rockchip: add USB-C support for ROCK 5B/5B+/5T")
Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
v1: As per the shematics CC_INT_L interrupt pin is GPIO3_B4_u
    As per the shematics TYPEC5V_PWREN_H pin is GPIO2_B6_d
---
 arch/arm64/boot/dts/rockchip/rk3588-rock-5b-5bp-5t.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b-5bp-5t.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b-5bp-5t.dtsi
index b3e76ad2d869..0cd8ac7bf538 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b-5bp-5t.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b-5bp-5t.dtsi
@@ -537,11 +537,11 @@ pcie3_vcc3v3_en: pcie3-vcc3v3-en {
 
 	usb {
 		usbc0_int: usbc0-int {
-			rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
+			rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>;
 		};
 
 		vbus5v0_typec_en: vbus5v0-typec-en {
-			rockchip,pins = <2 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+			rockchip,pins = <2 RK_PB6 RK_FUNC_GPIO &pcfg_pull_down>;
 		};
 	};
 };
-- 
2.50.1