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From: Frank Li <Frank.li@oss.nxp.com>
To: Leonardo Costa <leoreis.costa@gmail.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Robert Foss <rfoss@kernel.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Luca Ceresoli <luca.ceresoli@bootlin.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, imx@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	Leonardo Costa <leonardo.costa@toradex.com>
Subject: Re: [PATCH 2/3] drm/bridge: simple-bridge: Add Toradex RGB to VGA DAC bridge
Date: Mon, 12 Oct 2026 11:30:22 -0500	[thread overview]
Message-ID: <as0LHvZdqhl4HOup@SMW015318> (raw)
In-Reply-To: <20261012-v1-apalis-imx6-enable-vga-v1-2-8905d8746504@toradex.com>

On Mon, Oct 12, 2026 at 04:25:24AM -0300, Leonardo Costa wrote:
> From: Leonardo Costa <leonardo.costa@toradex.com>
>
> The VGA bridge on Apalis iMX6 consists of a simple resistor ladder that
> converts a digital 16-bit RGB signal to VGA. The VGA output is gated by
> an active-low data-enable signal.
>
> Signed-off-by: Leonardo Costa <leonardo.costa@toradex.com>
> ---

Reviewed-by: Frank Li <Frank.Li@nxp.com>

>  drivers/gpu/drm/bridge/simple-bridge.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c
> index 3fba7002322e..3f88fcdfa214 100644
> --- a/drivers/gpu/drm/bridge/simple-bridge.c
> +++ b/drivers/gpu/drm/bridge/simple-bridge.c
> @@ -253,6 +253,10 @@ static const struct drm_bridge_timings ti_ths8135_bridge_timings = {
>  	.hold_time_ps = 500,
>  };
>
> +static const struct drm_bridge_timings toradex_apalis_imx6_vga_dac_timings = {
> +	.input_bus_flags = DRM_BUS_FLAG_DE_LOW,
> +};
> +
>  static const struct of_device_id simple_bridge_match[] = {
>  	{
>  		.compatible = "dumb-vga-dac",
> @@ -312,6 +316,12 @@ static const struct of_device_id simple_bridge_match[] = {
>  			.timings = &ti_ths8134_bridge_timings,
>  			.connector_type = DRM_MODE_CONNECTOR_VGA,
>  		},
> +	}, {
> +		.compatible = "toradex,apalis-imx6-vga-dac",
> +		.data = &(const struct simple_bridge_info) {
> +			.timings = &toradex_apalis_imx6_vga_dac_timings,
> +			.connector_type = DRM_MODE_CONNECTOR_VGA,
> +		},
>  	},
>  	{},
>  };
>
> --
> 2.43.0
>
>

  reply	other threads:[~2026-10-12 16:30 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-12  7:25 [PATCH 0/3] Add VGA support for Apalis iMX6 Leonardo Costa
2026-10-12  7:25 ` [PATCH 1/3] dt-bindings: display: bridge: simple: Add the Toradex Apalis iMX6 VGA DAC bridge Leonardo Costa
2026-10-12 16:29   ` Frank Li
2026-10-12 19:08   ` Conor Dooley
2026-10-12  7:25 ` [PATCH 2/3] drm/bridge: simple-bridge: Add Toradex RGB to " Leonardo Costa
2026-10-12 16:30   ` Frank Li [this message]
2026-10-12  7:25 ` [PATCH 3/3] ARM: dts: imx6q-apalis: Add VGA overlay Leonardo Costa
2026-10-12 16:33   ` Frank Li
2026-10-12 16:40 ` [PATCH 0/3] Add VGA support for Apalis iMX6 Laurent Pinchart

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