linux-kernel - Re: [PATCH 2/7] iio: adc: sc27xx: fix read big scale voltage not right

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Date:   Fri, 7 Jan 2022 14:55:15 +0800
From:   Baolin Wang <baolin.wang7@...il.com>
To:     Cixi Geng <gengcixi@...il.com>
Cc:     Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>, jic23@...nel.org,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>, lgirdwood@...il.com,
        Mark Brown <broonie@...nel.org>, yuming.zhu1@...soc.com,
        linux-iio@...r.kernel.org,
        Devicetree List <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] iio: adc: sc27xx: fix read big scale voltage not right

On Thu, Jan 6, 2022 at 9:00 PM Cixi Geng <gengcixi@...il.com> wrote:
>
> From: Cixi Geng <cixi.geng1@...soc.com>
>
> Fix wrong configuration value of SC27XX_ADC_SCALE_MASK and
> SC27XX_ADC_SCALE_SHIFT by spec documetation.
>
> Signed-off-by: Yuming Zhu <yuming.zhu1@...soc.com>
> Signed-off-by: Cixi Geng <cixi.geng1@...soc.com>

Reviewed-by: Baolin Wang <baolin.wang7@...il.com>

> ---
>  drivers/iio/adc/sc27xx_adc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
> index 00098caf6d9e..aee076c8e2b1 100644
> --- a/drivers/iio/adc/sc27xx_adc.c
> +++ b/drivers/iio/adc/sc27xx_adc.c
> @@ -36,8 +36,8 @@
>
>  /* Bits and mask definition for SC27XX_ADC_CH_CFG register */
>  #define SC27XX_ADC_CHN_ID_MASK         GENMASK(4, 0)
> -#define SC27XX_ADC_SCALE_MASK          GENMASK(10, 8)
> -#define SC27XX_ADC_SCALE_SHIFT         8
> +#define SC27XX_ADC_SCALE_MASK          GENMASK(10, 9)
> +#define SC27XX_ADC_SCALE_SHIFT         9
>
>  /* Bits definitions for SC27XX_ADC_INT_EN registers */
>  #define SC27XX_ADC_IRQ_EN              BIT(0)
> --
> 2.25.1
>


-- 
Baolin Wang