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
>
>
next prev parent reply other threads:[~2026-10-12 16:30 UTC|newest]
Thread overview: 14+ 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
2026-10-13 9:06 ` Francesco Dolcini
2026-10-13 11:11 ` Laurent Pinchart
2026-10-13 12:50 ` Francesco Dolcini
2026-10-14 13:57 ` Leonardo Costa
2026-10-14 15:36 ` Frank Li
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