linux-kernel - Re: [PATCH] drm/bridge: ite-it6505: add missing Kconfig option select

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Message-ID: <fd02a183-bcaa-86a8-8a13-52a9ddb374d5@baylibre.com>
Date:   Tue, 26 Apr 2022 17:29:31 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Fabien Parent <fparent@...libre.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Hermes Wu <hermes.wu@....com.tw>,
        Allen Chen <allen.chen@....com.tw>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/bridge: ite-it6505: add missing Kconfig option select

On 26/04/2022 16:15, Fabien Parent wrote:
> The IT6505 is using functions provided by the DRM_DP_HELPER driver.
> In order to avoid having the bridge enabled but the helper disabled,
> let's add a select in order to be sure that the DP helper functions are
> always available.
> 
> Fixes: b5c84a9edcd4 ("drm/bridge: add it6505 driver")
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> ---
>   drivers/gpu/drm/bridge/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index 007e5a282f67..2145b08f9534 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -78,6 +78,7 @@ config DRM_ITE_IT6505
>           tristate "ITE IT6505 DisplayPort bridge"
>           depends on OF
>           select DRM_KMS_HELPER
> +        select DRM_DP_HELPER
>           select EXTCON
>           help
>             ITE IT6505 DisplayPort bridge chip driver.

http://lore.kernel.org/r/20220403151637.15546-1-rdunlap@infradead.org also select DRM_DP_AUX_BUS,
can you check if this is really neaded ?

Neil