[PATCH v2] drm/bridge: simple-bridge: Add support for TI TDP158

[Dmitry Baryshkov]

On Mon, May 27, 2024 at 06:06:05PM +0200, Marc Gonzalez wrote:
> From: Arnaud Vrac <avrac at freebox.fr>
> 
> The TI TDP158 is an AC-Coupled HDMI signal to TMDS Redriver supporting
> DVI 1.0 and HDMI 1.4b and 2.0b output signals.
> 
> Since it's an I2C-programmable bridge, it could have a proper driver,
> but the default settings work fine, thus simple bridge is sufficient.
> 
> Signed-off-by: Arnaud Vrac <avrac at freebox.fr>
> Signed-off-by: Marc Gonzalez <mgonzalez at freebox.fr>
> ---
> Change in v2: send from correct address
> ---
>  drivers/gpu/drm/bridge/simple-bridge.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c
> index 5813a2c4fc5ee..b138279864750 100644
> --- a/drivers/gpu/drm/bridge/simple-bridge.c
> +++ b/drivers/gpu/drm/bridge/simple-bridge.c
> @@ -292,6 +292,11 @@ static const struct of_device_id simple_bridge_match[] = {
>  			.timings = &ti_ths8134_bridge_timings,
>  			.connector_type = DRM_MODE_CONNECTOR_VGA,
>  		},
> +	}, {
> +		.compatible = "ti,tdp158",
> +		.data = &(const struct simple_bridge_info) {
> +			.connector_type = DRM_MODE_CONNECTOR_HDMIA,

Bindings please. Also, note that per the datasheet the bridge uses two
supplies, Vcc for 3.3V and Vdd for 1.1V, so it doesn't fully fit the
simple-bridge.c (which might need to be adjusted for the second supply).
Chapter 7.3.2 of the datasheet points out that Vcc should be brought up
before Vdd.

> +		},
>  	},
>  	{},
>  };
> -- 
> 2.34.1

-- 
With best wishes
Dmitry