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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by AS1PR04MB9456.eurprd04.prod.outlook.com (2603:10a6:20b:4d7::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8069.28; Mon, 21 Oct 2024 01:50:11 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90%4]) with mapi id 15.20.8069.027; Mon, 21 Oct 2024 01:50:11 +0000 Message-ID: Date: Mon, 21 Oct 2024 09:50:36 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/5] drm/bridge: imx8mp-hdmi-tx: Set output_port to 1 To: Dmitry Baryshkov Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, marex@denx.de, stefan@agner.ch References: <20241018064813.2750016-1-victor.liu@nxp.com> <20241018064813.2750016-5-victor.liu@nxp.com> From: Liu Ying Content-Language: en-US In-Reply-To: Content-Type: text/plain; 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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 >> --- >> 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; > > This will break compatibility with older DT files, which don't have > output port. I think you need to add output_port_optional flag to > dw_hdmi_plat_data and still return 0 from dw_hdmi_parse_dt() if the flag > is set, but there is no remote node. > > Last, but not least, this changes behaviour of the connector. > dw_hdmi_connector_create() implements CEC support, handles > ycbcr_420_allowed, HDR metadata, etc. > > We are slowly moving towards the supporting all of this in bridge > connector via the HDMI Connector framework, but this is not > implemented for now. Then, it looks like this patch series needs to wait until this is implemented. > >> 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 >> > -- Regards, Liu Ying