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arm64: dts: rockchip: Add frl-enable-gpios to rk3588s-khadas-edge2

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The board exposes the GPIO4_B1 pin to control the voltage bias on the
HDMI0 data lines.  It must be asserted when operating in HDMI 2.1 FRL
mode and deasserted for HDMI 1.4/2.0 TMDS mode.

Wire up the hdmi0 node to its dedicated GPIO via frl-enable-gpios to
allow adjusting the bias when transitioning between TMDS and FRL modes.

While at it, remove the duplicated &hdmi0_sound node.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20260428-dts-rk-frl-enable-gpios-v2-7-924df9db884a@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Cristian Ciocaltea 2026-04-28 00:57:25 +03:00 committed by Heiko Stuebner
parent cb3ee61e35
commit bb85f4f554
1 changed files with 10 additions and 4 deletions
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14
arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
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@ -194,6 +194,10 @@ &gpu {
};
&hdmi0 {
frl-enable-gpios = <&gpio4 RK_PB1 GPIO_ACTIVE_LOW>;
pinctrl-0 = <&hdmim0_tx0_cec &hdmim0_tx0_hpd
&hdmim0_tx0_scl &hdmim0_tx0_sda &hdmi0_tx_on_h>;
pinctrl-names = "default";
status = "okay";
};
@ -217,10 +221,6 @@ &hdptxphy0 {
status = "okay";
};
&hdmi0_sound {
status = "okay";
};
&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0m2_xfer>;
@ -282,6 +282,12 @@ &pd_gpu {
};
&pinctrl {
hdmi {
hdmi0_tx_on_h: hdmi0-tx-on-h {
rockchip,pins = <4 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
vdd_sd {
vdd_sd_en: vdd-sd-en {
rockchip,pins = <1 RK_PB6 RK_FUNC_GPIO &pcfg_pull_up>;