arm64: dts: rockchip: Add frl-enable-gpios to rk3576 boards

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The following RK3576 boards expose a GPIO pin to control the voltage
bias on the HDMI data lines:

- rk3576-100ask-dshanpi-a1
- rk3576-armsom-sige5
- rk3576-evb1-v10
- rk3576-evb2-v10
- rk3576-nanopi-m5
- rk3576-roc-pc
- rk3576-rock-4d

The pin 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.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20260428-dts-rk-frl-enable-gpios-v2-1-924df9db884a@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

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This commit is contained in:

Cristian Ciocaltea 2026-04-28 00:57:19 +03:00 • committed by Heiko Stuebner

parent 76cf96cd9e

commit 2cd97880fb

7 changed files with 63 additions and 0 deletions

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arch/arm64/boot/dts/rockchip/rk3576-100ask-dshanpi-a1.dts

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arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts

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arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts

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arch/arm64/boot/dts/rockchip/rk3576-evb2-v10.dts

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arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts

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arch/arm64/boot/dts/rockchip/rk3576-roc-pc.dts

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arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts

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