diff options
| author | Cristian Ciocaltea <cristian.ciocaltea@collabora.com> | 2026-04-28 00:57:21 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2026-05-05 21:28:39 +0300 |
| commit | ba0d7cfb9870064296a8d4d57ff2c230166ada3c (patch) | |
| tree | 8078f586abcd88b99a3dae6b9d7e4430514b27b9 | |
| parent | 12eb09ee67cba1e3cc0c75149d0a04a5187ca575 (diff) | |
| download | linux-ba0d7cfb9870064296a8d4d57ff2c230166ada3c.tar.xz | |
arm64: dts: rockchip: Add frl-enable-gpios to rk3576-nanopi-r76s
The board exposes the GPIO4_C6 pin to control the voltage bias on the
HDMI 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 hdmi node to its dedicated GPIO via frl-enable-gpios to
allow adjusting the bias when transitioning between TMDS and FRL modes.
Additionally, drop the now unnecessary workaround of using vcc5v_hdmi_tx
as hdmi-pwr-supply solely to drive the GPIO into its default state.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20260428-dts-rk-frl-enable-gpios-v2-3-924df9db884a@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts index 7ec27b05ff10..0a5cd5f6fd33 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts @@ -70,7 +70,6 @@ hdmi-con { compatible = "hdmi-connector"; - hdmi-pwr-supply = <&vcc5v_hdmi_tx>; type = "a"; port { @@ -109,18 +108,6 @@ regulator-name = "vcc5v_dcin"; }; - vcc5v_hdmi_tx: regulator-vcc5v-hdmi-tx { - compatible = "regulator-fixed"; - enable-active-high; - gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>; - pinctrl-names = "default"; - pinctrl-0 = <&hdmi_tx_on_h>; - regulator-min-microvolt = <5000000>; - regulator-max-microvolt = <5000000>; - regulator-name = "vcc5v_hdmi_tx"; - vin-supply = <&vcc5v0_sys_s5>; - }; - vcc5v0_device_s0: regulator-vcc5v0-device-s0 { compatible = "regulator-fixed"; regulator-always-on; @@ -252,6 +239,9 @@ }; &hdmi { + frl-enable-gpios = <&gpio4 RK_PC6 GPIO_ACTIVE_LOW>; + pinctrl-0 = <&hdmi_txm0_pins &hdmi_tx_scl &hdmi_tx_sda &hdmi_tx_on_h>; + pinctrl-names = "default"; status = "okay"; }; |