linux-kernel - Re: [PATCH 1/5] drm/bridge: samsung-dsim: add more mipi-dsi device debug information

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Date:   Mon, 28 Aug 2023 17:37:48 -0500
From:   Adam Ford <aford173@...il.com>
To:     Michael Tretter <m.tretter@...gutronix.de>
Cc:     Inki Dae <inki.dae@...sung.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, kernel@...gutronix.de,
        Marco Felsch <m.felsch@...gutronix.de>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 1/5] drm/bridge: samsung-dsim: add more mipi-dsi device
 debug information

On Mon, Aug 28, 2023 at 10:59 AM Michael Tretter
<m.tretter@...gutronix.de> wrote:
>
> From: Marco Felsch <m.felsch@...gutronix.de>
>
> Since the MIPI configuration can be changed on demand it is very useful
> to print more MIPI settings during the MIPI device attach step.
>
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> Signed-off-by: Michael Tretter <m.tretter@...gutronix.de>

Reviewed-by: Adam Ford <aford173@...il.com>  #imx8mm-beacon
Tested-by: Adam Ford <aford173@...il.com>  #imx8mm-beacon

> ---
>  drivers/gpu/drm/bridge/samsung-dsim.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
> index 73ec60757dbc..6778f1751faa 100644
> --- a/drivers/gpu/drm/bridge/samsung-dsim.c
> +++ b/drivers/gpu/drm/bridge/samsung-dsim.c
> @@ -1711,7 +1711,10 @@ static int samsung_dsim_host_attach(struct mipi_dsi_host *host,
>                 return ret;
>         }
>
> -       DRM_DEV_INFO(dev, "Attached %s device\n", device->name);
> +       DRM_DEV_INFO(dev, "Attached %s device (lanes:%d bpp:%d mode-flags:0x%lx)\n",
> +                    device->name, device->lanes,
> +                    mipi_dsi_pixel_format_to_bpp(device->format),
> +                    device->mode_flags);
>
>         drm_bridge_add(&dsi->bridge);
>
>
> --
> 2.39.2
>