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<0140bb0c-35f0-4a5e-b100-32e09bc8c617@nxp.com> Date: Mon, 30 Dec 2024 14:57:18 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/3] drm/bridge: imx8mp-hdmi-tx: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR To: Marek Vasut , dri-devel@lists.freedesktop.org Cc: Andrzej Hajda , David Airlie , Fabio Estevam , Jernej Skrabec , Jonas Karlman , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Pengutronix Kernel Team , Robert Foss , Sascha Hauer , Shawn Guo , Simona Vetter , Stefan Agner , Thomas Zimmermann , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org References: <20241224014701.253490-1-marex@denx.de> From: Liu Ying Content-Language: en-US In-Reply-To: <20241224014701.253490-1-marex@denx.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SI2PR02CA0033.apcprd02.prod.outlook.com (2603:1096:4:195::20) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 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List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 12/24/2024, Marek Vasut wrote: > The dw-hdmi output_port is set to 1 in order to look for a connector > next bridge in order to get DRM_BRIDGE_ATTACH_NO_CONNECTOR working. > The output_port set to 1 makes the DW HDMI driver core look up the > next bridge in DT, where the next bridge is often the hdmi-connector . > > Similar to 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR") > > Signed-off-by: Marek Vasut > --- > Cc: Andrzej Hajda > Cc: David Airlie > Cc: Fabio Estevam > Cc: Jernej Skrabec > Cc: Jonas Karlman > Cc: Laurent Pinchart > Cc: Liu Ying > Cc: Maarten Lankhorst > Cc: Maxime Ripard > Cc: Neil Armstrong > Cc: Pengutronix Kernel Team > Cc: Robert Foss > Cc: Sascha Hauer > Cc: Shawn Guo > Cc: Simona Vetter > Cc: Stefan Agner > Cc: Thomas Zimmermann > Cc: dri-devel@lists.freedesktop.org > Cc: imx@lists.linux.dev > Cc: linux-arm-kernel@lists.infradead.org > --- > V2: No change > --- > drivers/gpu/drm/bridge/imx/Kconfig | 1 + > drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig > index 9a480c6abb856..d8e9fbf75edbb 100644 > --- a/drivers/gpu/drm/bridge/imx/Kconfig > +++ b/drivers/gpu/drm/bridge/imx/Kconfig > @@ -27,6 +27,7 @@ config DRM_IMX8MP_DW_HDMI_BRIDGE > config DRM_IMX8MP_HDMI_PVI > tristate "Freescale i.MX8MP HDMI PVI bridge support" > depends on OF > + select DRM_DISPLAY_CONNECTOR Select it for DRM_IMX8MP_DW_HDMI_BRIDGE instead? Furthermore, if yes, should it be even selected for DRM_DW_HDMI instead? I'm not sure if this is needed to be selected though, since only DRM_MESON is selecting it while CONFIG_DRM_DISPLAY_CONNECTOR is enabled in multiple defconfig files(like arch/arm/configs/multi_v7_defconfig). > help > Choose this to enable support for the internal HDMI TX Parallel > Video Interface found on the Freescale i.MX8MP SoC. > diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > index 1e7a789ec2890..4ebae5ad072ad 100644 > --- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > +++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > @@ -101,6 +101,7 @@ static int imx8mp_dw_hdmi_probe(struct platform_device *pdev) > plat_data->phy_name = "SAMSUNG HDMI TX PHY"; > plat_data->priv_data = hdmi; > plat_data->phy_force_vendor = true; > + plat_data->output_port = 1; Dmitry's comment applies here. https://lore.kernel.org/all/vvsj6ri2ke25nzocbq736yv7rphzma6pn3yk2uh7iu43zfe2sa@2fwye4k4w6he/ > > hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data); > if (IS_ERR(hdmi->dw_hdmi)) -- Regards, Liu Ying