linux-kernel - [PATCH 4/5] drm/bridge: imx8mp-hdmi-tx: Set output

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Message-Id: <20241018064813.2750016-5-victor.liu@nxp.com>
Date: Fri, 18 Oct 2024 14:48:12 +0800
From: Liu Ying <victor.liu@....com>
To: devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	andrzej.hajda@...el.com,
	neil.armstrong@...aro.org,
	rfoss@...nel.org,
	Laurent.pinchart@...asonboard.com,
	jonas@...boo.se,
	jernej.skrabec@...il.com,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
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	simona@...ll.ch,
	marex@...x.de,
	stefan@...er.ch,
	dmitry.baryshkov@...aro.org
Subject: [PATCH 4/5] drm/bridge: imx8mp-hdmi-tx: Set output_port to 1

Set DW HDMI platform data's output_port to 1 in imx8mp_dw_hdmi_probe()
so that dw_hdmi_probe() called by imx8mp_dw_hdmi_probe() can tell the
DW HDMI bridge core driver about the output port we are using, hence
the next bridge can be found in dw_hdmi_parse_dt() according to the port
index, and furthermore the next bridge can be attached to bridge chain in
dw_hdmi_bridge_attach() when the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is
set.  The output_port value aligns to the value used by devicetree.
This is a preparation for making the i.MX8MP LCDIF driver use
drm_bridge_connector which requires the DRM_BRIDGE_ATTACH_NO_CONNECTOR
flag.

Signed-off-by: Liu Ying <victor.liu@....com>
---
 drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c
index 8fcc6d18f4ab..54a53f96929a 100644
--- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c
+++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c
@@ -96,6 +96,7 @@ static int imx8mp_dw_hdmi_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(hdmi->pixclk),
 				     "Unable to get pixel clock\n");
 
+	plat_data->output_port = 1;
 	plat_data->mode_valid = imx8mp_hdmi_mode_valid;
 	plat_data->phy_ops = &imx8mp_hdmi_phy_ops;
 	plat_data->phy_name = "SAMSUNG HDMI TX PHY";
-- 
2.34.1