linux-kernel - RE: [PATCH 2/2] iio: adc: vf610_adc: limit i.MX6SX's channel number to 4

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Message-ID:
 <DU0PR04MB9496C9BB0A80C0142A32F9DF90522@DU0PR04MB9496.eurprd04.prod.outlook.com>
Date: Tue, 5 Nov 2024 02:09:37 +0000
From: Bough Chen <haibo.chen@....com>
To: Frank Li <frank.li@....com>, Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>, "open list:NXP i.MX 7D/6SX/6UL/93 AND
 VF610 ADC DRIVER" <linux-iio@...r.kernel.org>, "open list:NXP i.MX
 7D/6SX/6UL/93 AND VF610 ADC DRIVER" <imx@...ts.linux.dev>, open list
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/2] iio: adc: vf610_adc: limit i.MX6SX's channel number
 to 4

> -----Original Message-----
> From: Frank Li <frank.li@....com>
> Sent: 2024年11月5日 7:12
> To: Bough Chen <haibo.chen@....com>; Jonathan Cameron
> <jic23@...nel.org>; Lars-Peter Clausen <lars@...afoo.de>; open list:NXP i.MX
> 7D/6SX/6UL/93 AND VF610 ADC DRIVER <linux-iio@...r.kernel.org>; open
> list:NXP i.MX 7D/6SX/6UL/93 AND VF610 ADC DRIVER <imx@...ts.linux.dev>;
> open list <linux-kernel@...r.kernel.org>
> Subject: [PATCH 2/2] iio: adc: vf610_adc: limit i.MX6SX's channel number to 4
> 
> i.MX6SX only has 4 ADC channels, so limit channel numbers to 4 for compatible
> string 'fsl,imx6sx-adc'.

Reviewed-by: Haibo Chen <haibo.chen@....com>

Best Regards
Haibo Chen
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
> compatible string 'fsl,imx6sx-adc' already document in
> Documentation/devicetree/bindings/iio/adc/fsl,vf610-adc.yaml
> ---
>  drivers/iio/adc/vf610_adc.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index
> 4e737b193c012..84573cdfce5da 100644
> --- a/drivers/iio/adc/vf610_adc.c
> +++ b/drivers/iio/adc/vf610_adc.c
> @@ -809,7 +809,8 @@ static const struct iio_info vf610_adc_iio_info = {  };
> 
>  static const struct of_device_id vf610_adc_match[] = {
> -	{ .compatible = "fsl,vf610-adc", },
> +	{ .compatible = "fsl,imx6sx-adc", .data = (void *)4},
> +	{ .compatible = "fsl,vf610-adc", .data = (void
> +*)ARRAY_SIZE(vf610_adc_iio_channels)},
>  	{ /* sentinel */ }
>  };
>  MODULE_DEVICE_TABLE(of, vf610_adc_match); @@ -870,7 +871,7 @@
> static int vf610_adc_probe(struct platform_device *pdev)
>  	indio_dev->info = &vf610_adc_iio_info;
>  	indio_dev->modes = INDIO_DIRECT_MODE;
>  	indio_dev->channels = vf610_adc_iio_channels;
> -	indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels);
> +	indio_dev->num_channels = (u32)device_get_match_data(dev);
> 
>  	vf610_adc_cfg_init(info);
>  	vf610_adc_hw_init(info);
> --
> 2.34.1