linux-kernel - Re: [RFC PATCH] drm: omapdrm: dsi: add refsel also for omap4

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Message-ID: <20230913071539.GD5285@atomide.com>
Date:   Wed, 13 Sep 2023 10:15:39 +0300
From:   Tony Lindgren <tony@...mide.com>
To:     Andreas Kemnade <andreas@...nade.info>,
        Sebastian Reichel <sre@...nel.org>
Cc:     tomi.valkeinen@...asonboard.com, airlied@...il.com,
        daniel@...ll.ch, u.kleine-koenig@...gutronix.de, arnd@...db.de,
        laurent.pinchart@...asonboard.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [RFC PATCH] drm: omapdrm: dsi: add refsel also for omap4

* Andreas Kemnade <andreas@...nade.info> [230913 06:59]:
> Some 3.0 source has it set behind a if (omap4).
> Maybe it is helpful maybe not, at least in the omap4460
> trm these bits are marked as reserved.
> But maybe some dsi video mode panel starts magically working.

Interesting. So Andreas mentioned that dsi video mode works on omap5
but not on omap4. Adding Sebastian to the list too.

Regards,

Tony

> 
> Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> ---
>  drivers/gpu/drm/omapdrm/dss/dsi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
> index 60189a23506a1..e2f576cd9f63c 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dsi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
> @@ -4505,7 +4505,7 @@ static const struct dss_pll_hw dss_omap4_dsi_pll_hw = {
>  	.has_stopmode = true,
>  	.has_freqsel = false,
>  	.has_selfreqdco = false,
> -	.has_refsel = false,
> +	.has_refsel = true,
>  };
>  
>  static const struct dss_pll_hw dss_omap5_dsi_pll_hw = {
> -- 
> 2.39.2
>