[PATCH 2/3] drm/bridge: simple-bridge: Add Toradex RGB to VGA DAC bridge

[Leonardo Costa]

From: Leonardo Costa <leonardo.costa at 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 at toradex.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