linux-kernel - Re: [PATCH V2] drm: adv7511: Fix low refresh rate register for ADV7533/5

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Date:   Tue, 18 Jul 2023 09:03:27 +0200
From:   Nuno Sá <noname.nuno@...il.com>
To:     Alexandru Ardelean <alex@...uggie.ro>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc:     architt@...eaurora.org, 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 V2] drm: adv7511: Fix low refresh rate register for
 ADV7533/5

On Tue, 2023-07-18 at 09:28 +0300, Alexandru Ardelean 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: Nuno Sa <nuno.sa@...log.com>
> Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
> ---
> 

It looks like you dropped your S-o-b tag in v2? I guess it was not on purpose :)

- Nuno Sá

> 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..09290a377957 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));
>