diff options
| author | Cristian Ciocaltea <cristian.ciocaltea@collabora.com> | 2026-04-28 00:57:25 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2026-05-05 21:28:40 +0300 |
| commit | bb85f4f5541de9abbe7e300e94d58ea888dd3b33 (patch) | |
| tree | 38f10bd51178d95d57f9a274272088d3595965ae | |
| parent | cb3ee61e35a9d60e6410526fec7b74af9be22d88 (diff) | |
| download | linux-bb85f4f5541de9abbe7e300e94d58ea888dd3b33.tar.xz | |
arm64: dts: rockchip: Add frl-enable-gpios to rk3588s-khadas-edge2
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>
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts b/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts index 2c22abaf40a8..5afbc593341b 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts @@ -194,6 +194,10 @@ }; &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 @@ status = "okay"; }; -&hdmi0_sound { - status = "okay"; -}; - &i2c0 { pinctrl-names = "default"; pinctrl-0 = <&i2c0m2_xfer>; @@ -282,6 +282,12 @@ }; &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>; |