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Date: Sun, 21 Apr 2024 15:07:47 +0300
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Adam Ford <aford173@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org, aford@beaconembedded.com,
	kernel test robot <lkp@intel.com>, Liu Ying <victor.liu@nxp.com>,
	Andrzej Hajda <andrzej.hajda@intel.com>,
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	Sascha Hauer <s.hauer@pengutronix.de>,
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	Lucas Stach <l.stach@pengutronix.de>,
	dri-devel@lists.freedesktop.org, imx@lists.linux.dev,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/bridge: imx: Fix unmet depenency for
 PHY_FSL_SAMSUNG_HDMI_PHY
Message-ID: <20240421120747.GA19147@pendragon.ideasonboard.com>
References: <20240420112831.5942-1-aford173@gmail.com>
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In-Reply-To: <20240420112831.5942-1-aford173@gmail.com>

Hi Adam,

Thank you for the patch.

On Sat, Apr 20, 2024 at 06:28:31AM -0500, Adam Ford wrote:
> When enabling i.MX8MP DWC HDMI driver, it automatically selects
> PHY_FSL_SAMSUNG_HDMI_PHY, since it wont' work without the phy.
> This may cause some Kconfig warnings during various build tests.
> Fix this by implying the phy instead of selecting the phy.
> 
> Fixes: 1f36d634670d ("drm/bridge: imx: add bridge wrapper driver for i.MX8MP DWC HDMI")
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202404190103.lLm8LtuP-lkp@intel.com/
> Signed-off-by: Adam Ford <aford173@gmail.com>
> 
> diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig
> index 7687ed652df5..8f125c75050d 100644
> --- a/drivers/gpu/drm/bridge/imx/Kconfig
> +++ b/drivers/gpu/drm/bridge/imx/Kconfig
> @@ -9,7 +9,7 @@ config DRM_IMX8MP_DW_HDMI_BRIDGE
>  	depends on DRM_DW_HDMI
>  	depends on OF
>  	select DRM_IMX8MP_HDMI_PVI

This also looks wrong, even if in practice it will likely work because
DRM_IMX8MP_HDMI_PVI has no extra dependency compared to
DRM_IMX8MP_DW_HDMI_BRIDGE. Still, it would be good to fix it.

> -	select PHY_FSL_SAMSUNG_HDMI_PHY
> +	imply PHY_FSL_SAMSUNG_HDMI_PHY
>  	help
>  	  Choose this to enable support for the internal HDMI encoder found
>  	  on the i.MX8MP SoC.

-- 
Regards,

Laurent Pinchart