linux-kernel - Re: [PATCH v4] drm: adv7511: Fix low refresh rate register for ADV7533/5

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Message-ID: <CAH3L5QqJ_VgS=_95WOK9-yj6dr1Qmkjyb_MNAjBgkgfxu3vW3g@mail.gmail.com>
Date:   Thu, 20 Jul 2023 10:30:46 +0300
From:   Alexandru Ardelean <alex@...uggie.ro>
To:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc:     bogdan.togorean@...log.com, nuno.sa@...log.com, daniel@...ll.ch,
        airlied@...il.com, jonas@...boo.se,
        Laurent.pinchart@...asonboard.com, rfoss@...nel.org,
        neil.armstrong@...aro.org, andrzej.hajda@...el.com,
        festevam@...il.com
Subject: Re: [PATCH v4] drm: adv7511: Fix low refresh rate register for ADV7533/5

On Wed, Jul 19, 2023 at 9:02 AM Alexandru Ardelean <alex@...uggie.ro> wrote:
>
> From: Bogdan Togorean <bogdan.togorean@...log.com>
>
> For ADV7533 and ADV7535 low refresh rate is selected using
> bits [3:2] of 0x4a main register.
> So depending on ADV model write 0xfb or 0x4a register.
>
> Fixes: 2437e7cd88e8 ("drm/bridge: adv7533: Initial support for ADV7533")
> Reviewed-by: Robert Foss <rfoss@...nel.org>
> Reviewed-by: Nuno Sa <nuno.sa@...log.com>
> Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
> Signed-off-by: Alexandru Ardelean <alex@...uggie.ro>
> ---

Right.
I forgot a changelog here.
Apologies

Changelog v3 -> v4:
* Ran ./scripts/checkpatch.pl --strict
* Added Reviewed-by: Robert Foss <rfoss@...nel.org>

Changelog v2 -> v3:
* https://lore.kernel.org/dri-devel/1c3fde3a873b0f948d3c4d37107c5bb67dc9f7bb.camel@gmail.com/T/#u
* Added my S-o-b tag back

Changelog v1 -> v2:
* https://lore.kernel.org/dri-devel/20190716131005.761-1-bogdan.togorean@analog.com/
* added Fixes: tag
* added Reviewed-by: tag for Nuno


>  drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> index ddceafa7b637..8d6c93296503 100644
> --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
> @@ -786,8 +786,13 @@ static void adv7511_mode_set(struct adv7511 *adv7511,
>         else
>                 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
>
> -       regmap_update_bits(adv7511->regmap, 0xfb,
> -               0x6, low_refresh_rate << 1);
> +       if (adv7511->type == ADV7511)
> +               regmap_update_bits(adv7511->regmap, 0xfb,
> +                                  0x6, low_refresh_rate << 1);
> +       else
> +               regmap_update_bits(adv7511->regmap, 0x4a,
> +                                  0xc, low_refresh_rate << 2);
> +
>         regmap_update_bits(adv7511->regmap, 0x17,
>                 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
>
> --
> 2.41.0
>