linux-kernel - Re: [PATCH v2 4/8] media: i2c: ds90ub953: Handle V4L2_MBUS_CSI2_NONCONTINUOUS

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Message-ID: <20230725163649.GK31069@pendragon.ideasonboard.com>
Date:   Tue, 25 Jul 2023 19:36:49 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Luca Ceresoli <luca.ceresoli@...tlin.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Satish Nagireddy <satish.nagireddy@...cruise.com>,
        Matti Vaittinen <mazziesaccount@...il.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/8] media: i2c: ds90ub953: Handle
 V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK

Hi Tomi,

Thank you for the patch.

On Thu, Jul 20, 2023 at 01:30:35PM +0300, Tomi Valkeinen wrote:
> Handle V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK flag to configure the CSI-2 RX
> continuous/non-continuous clock register.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> ---
>  drivers/media/i2c/ds90ub953.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
> index ad964bd6c7eb..ad479923d2b4 100644
> --- a/drivers/media/i2c/ds90ub953.c
> +++ b/drivers/media/i2c/ds90ub953.c
> @@ -138,6 +138,7 @@ struct ub953_data {
>  	struct regmap		*regmap;
>  
>  	u32			num_data_lanes;
> +	bool			non_cont_clk;

Maybe non_continous_clk for consistency with 1/8 ?

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

>  
>  	struct gpio_chip	gpio_chip;
>  
> @@ -1139,6 +1140,9 @@ static int ub953_parse_dt(struct ub953_data *priv)
>  
>  	priv->num_data_lanes = nlanes;
>  
> +	priv->non_cont_clk = vep.bus.mipi_csi2.flags &
> +			     V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;
> +
>  	return 0;
>  }
>  
> @@ -1201,7 +1205,7 @@ static int ub953_hw_init(struct ub953_data *priv)
>  		return dev_err_probe(dev, ret, "i2c init failed\n");
>  
>  	ub953_write(priv, UB953_REG_GENERAL_CFG,
> -		    UB953_REG_GENERAL_CFG_CONT_CLK |
> +		    (priv->non_cont_clk ? 0 : UB953_REG_GENERAL_CFG_CONT_CLK) |
>  		    ((priv->num_data_lanes - 1) << UB953_REG_GENERAL_CFG_CSI_LANE_SEL_SHIFT) |
>  		    UB953_REG_GENERAL_CFG_CRC_TX_GEN_ENABLE);
>  
> 

-- 
Regards,

Laurent Pinchart