linux-kernel - Re: [PATCH 3/3] media: i2c: imx290: Add configuration for IMX462

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Message-ID: <20241115000637.GK26171@pendragon.ideasonboard.com>
Date: Fri, 15 Nov 2024 02:06:37 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Dave Stevenson <dave.stevenson@...pberrypi.com>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 3/3] media: i2c: imx290: Add configuration for IMX462

Hi Dave,

Thank you for the patch.

On Thu, Nov 14, 2024 at 04:01:15PM +0000, Dave Stevenson wrote:
> IMX462 is the successor to IMX290, and wants very minor
> changes to the register setup.
> 
> Add the relevant configuration to support it.
> 
> Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
> ---
>  drivers/media/i2c/imx290.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 66 insertions(+)
> 
> diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c
> index da654deb444a..f1780cc5d7cc 100644
> --- a/drivers/media/i2c/imx290.c
> +++ b/drivers/media/i2c/imx290.c
> @@ -170,6 +170,8 @@ enum imx290_model {
>  	IMX290_MODEL_IMX290LQR,
>  	IMX290_MODEL_IMX290LLR,
>  	IMX290_MODEL_IMX327LQR,
> +	IMX290_MODEL_IMX462LQR,
> +	IMX290_MODEL_IMX462LLR,
>  };
>  
>  struct imx290_model_info {
> @@ -316,6 +318,50 @@ static const struct cci_reg_sequence imx290_global_init_settings_290[] = {
>  	{ CCI_REG8(0x33b3), 0x04 },
>  };
>  
> +static const struct cci_reg_sequence imx290_global_init_settings_462[] = {
> +	{ CCI_REG8(0x300f), 0x00 },
> +	{ CCI_REG8(0x3010), 0x21 },
> +	{ CCI_REG8(0x3011), 0x02 },

As far as I can tell, the only difference in the init sequence between
imx290_global_init_settings_290 and imx290_global_init_settings_462 is
0x3011 register which is not present in imx290_global_init_settings_290.
It is however included in imx290_global_init_settings, and set to 0x02.
Could we therefore use imx290_global_init_settings_290 for the imx462 ?

> +	{ CCI_REG8(0x3016), 0x09 },
> +	{ CCI_REG8(0x3070), 0x02 },
> +	{ CCI_REG8(0x3071), 0x11 },
> +	{ CCI_REG8(0x309b), 0x10 },
> +	{ CCI_REG8(0x309c), 0x22 },
> +	{ CCI_REG8(0x30a2), 0x02 },
> +	{ CCI_REG8(0x30a6), 0x20 },
> +	{ CCI_REG8(0x30a8), 0x20 },
> +	{ CCI_REG8(0x30aa), 0x20 },
> +	{ CCI_REG8(0x30ac), 0x20 },
> +	{ CCI_REG8(0x30b0), 0x43 },
> +	{ CCI_REG8(0x3119), 0x9e },
> +	{ CCI_REG8(0x311c), 0x1e },
> +	{ CCI_REG8(0x311e), 0x08 },
> +	{ CCI_REG8(0x3128), 0x05 },
> +	{ CCI_REG8(0x313d), 0x83 },
> +	{ CCI_REG8(0x3150), 0x03 },
> +	{ CCI_REG8(0x317e), 0x00 },
> +	{ CCI_REG8(0x32b8), 0x50 },
> +	{ CCI_REG8(0x32b9), 0x10 },
> +	{ CCI_REG8(0x32ba), 0x00 },
> +	{ CCI_REG8(0x32bb), 0x04 },
> +	{ CCI_REG8(0x32c8), 0x50 },
> +	{ CCI_REG8(0x32c9), 0x10 },
> +	{ CCI_REG8(0x32ca), 0x00 },
> +	{ CCI_REG8(0x32cb), 0x04 },
> +	{ CCI_REG8(0x332c), 0xd3 },
> +	{ CCI_REG8(0x332d), 0x10 },
> +	{ CCI_REG8(0x332e), 0x0d },
> +	{ CCI_REG8(0x3358), 0x06 },
> +	{ CCI_REG8(0x3359), 0xe1 },
> +	{ CCI_REG8(0x335a), 0x11 },
> +	{ CCI_REG8(0x3360), 0x1e },
> +	{ CCI_REG8(0x3361), 0x61 },
> +	{ CCI_REG8(0x3362), 0x10 },
> +	{ CCI_REG8(0x33b0), 0x50 },
> +	{ CCI_REG8(0x33b2), 0x1a },
> +	{ CCI_REG8(0x33b3), 0x04 },
> +};
> +
>  #define IMX290_NUM_CLK_REGS	2
>  static const struct cci_reg_sequence xclk_regs[][IMX290_NUM_CLK_REGS] = {
>  	[IMX290_CLK_37_125] = {
> @@ -1455,6 +1501,20 @@ static const struct imx290_model_info imx290_models[] = {
>  		.max_analog_gain = 98,
>  		.name = "imx327",
>  	},
> +	[IMX290_MODEL_IMX462LQR] = {
> +		.colour_variant = IMX290_VARIANT_COLOUR,
> +		.init_regs = imx290_global_init_settings_462,
> +		.init_regs_num = ARRAY_SIZE(imx290_global_init_settings_462),
> +		.max_analog_gain = 98,
> +		.name = "imx462",
> +	},
> +	[IMX290_MODEL_IMX462LLR] = {
> +		.colour_variant = IMX290_VARIANT_MONO,
> +		.init_regs = imx290_global_init_settings_462,
> +		.init_regs_num = ARRAY_SIZE(imx290_global_init_settings_462),
> +		.max_analog_gain = 98,
> +		.name = "imx462",
> +	},
>  };
>  
>  static int imx290_parse_dt(struct imx290 *imx290)
> @@ -1653,6 +1713,12 @@ static const struct of_device_id imx290_of_match[] = {
>  	}, {
>  		.compatible = "sony,imx327lqr",
>  		.data = &imx290_models[IMX290_MODEL_IMX327LQR],
> +	}, {
> +		.compatible = "sony,imx462lqr",
> +		.data = &imx290_models[IMX290_MODEL_IMX462LQR],
> +	}, {
> +		.compatible = "sony,imx462llr",
> +		.data = &imx290_models[IMX290_MODEL_IMX462LLR],
>  	},
>  	{ /* sentinel */ },
>  };

-- 
Regards,

Laurent Pinchart