Re: [PATCH v2 4/4] iio: accel: adxl372: add support for ADXL371

[Jonathan Cameron]

On Fri, 6 Mar 2026 17:18:24 +0200
Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx> wrote:

> Add support for the Analog Devices ADXL371, a +-200g 3-axis MEMS
> accelerometer sharing the same register map as the ADXL372 but with
> different ODR values (320/640/1280/2560/5120 Hz vs 400/800/1600/3200/
> 6400 Hz), different bandwidth values, and different timer scale
> factors for activity/inactivity detection.
> 
> Due to a silicon anomaly (er001) causing FIFO data misalignment on
> all current ADXL371 silicon, FIFO and triggered buffer support is
> disabled for the ADXL371 - only direct mode reads are supported.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
A couple of small formatting things. Otherwise looks good to me.

Thanks,

Jonathan

>  
> diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
> index adb9e42653f1..7a1ee2fef618 100644
> --- a/drivers/iio/accel/adxl372.c
> +++ b/drivers/iio/accel/adxl372.c
> @@ -1,6 +1,6 @@
>  // SPDX-License-Identifier: GPL-2.0+
>  /*
> - * ADXL372 3-Axis Digital Accelerometer core driver
> + * ADXL371/ADXL372 3-Axis Digital Accelerometer core driver
>   *
>   * Copyright 2018 Analog Devices Inc.
>   */
> @@ -182,6 +182,14 @@ enum adxl372_odr {
>  	ADXL372_ODR_6400HZ,
>  };
>  
> +enum adxl371_odr {
> +	ADXL371_ODR_320HZ,
> +	ADXL371_ODR_640HZ,
> +	ADXL371_ODR_1280HZ,
> +	ADXL371_ODR_2560HZ,
> +	ADXL371_ODR_5120HZ,
Might be worth a
	ADXL371_ODR_NUM
entry so you can size the array from it below.

> +};
> +
>  enum adxl372_bandwidth {
>  	ADXL372_BW_200HZ,
>  	ADXL372_BW_400HZ,
> @@ -222,6 +230,37 @@ static const int adxl372_bw_freq_tbl[5] = {
>  	200, 400, 800, 1600, 3200,
>  };
>  
> +static const int adxl371_samp_freq_tbl[5] = {
> +	[ADXL371_ODR_320HZ] = 320,
> +	[ADXL371_ODR_640HZ] = 640,
> +	[ADXL371_ODR_1280HZ] = 1280,
> +	[ADXL371_ODR_2560HZ] = 2560,
> +	[ADXL371_ODR_5120HZ] = 5120,
> +};
> +
> +static const int adxl371_bw_freq_tbl[5] = {
> +	[ADXL371_ODR_320HZ] = 160,
> +	[ADXL371_ODR_640HZ] = 320,
> +	[ADXL371_ODR_1280HZ] = 640,
> +	[ADXL371_ODR_2560HZ] = 1280,
> +	[ADXL371_ODR_5120HZ] = 2560,
> +};
Style wise, why not do the same for adxl372_bw_freq_tbl[] as here?
I slightly prefer this style, but key is consistency so if you'd
gone the other way for both that would have been fine as well.