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

Anand Moon
2026-01-03T08:33:03Z

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@collabora.com>
Fixes: 67b2c15d8fb3 ("arm64: dts: rockchip: add USB-C support for ROCK 5B/5B+/5T")
Signed-off-by: Anand Moon <linux.amoon@gmail.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