2018-11-15 17:02:47

by Andreas Dannenberg

Subject: [PATCH] ASoC: pcm186x: Fix device reset-registers trigger value

According to the current device datasheet (TI Lit # SLAS831D, revised
March 2018) the value written to the device's PAGE register to trigger
a complete register reset should be 0xfe, not 0xff. So go ahead and
update to the correct value.

Reported-by: Stephane Le Provost <[email protected]>
Tested-by: Stephane Le Provost <[email protected]>
Signed-off-by: Andreas Dannenberg <[email protected]>
---
sound/soc/codecs/pcm186x.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/pcm186x.h b/sound/soc/codecs/pcm186x.h
index 2c6ba55bf394..bb3f0c42a1cd 100644
--- a/sound/soc/codecs/pcm186x.h
+++ b/sound/soc/codecs/pcm186x.h
@@ -139,7 +139,7 @@ enum pcm186x_type {
#define PCM186X_MAX_REGISTER PCM186X_CURR_TRIM_CTRL

/* PCM186X_PAGE */
-#define PCM186X_RESET 0xff
+#define PCM186X_RESET 0xfe

/* PCM186X_ADCX_INPUT_SEL_X */
#define PCM186X_ADC_INPUT_SEL_POL BIT(7)
--
2.15.1

2018-11-15 17:13:13

by Andrew Davis

Subject: Re: [PATCH] ASoC: pcm186x: Fix device reset-registers trigger value

On 11/15/18 11:01 AM, Andreas Dannenberg wrote:
> According to the current device datasheet (TI Lit # SLAS831D, revised
> March 2018) the value written to the device's PAGE register to trigger
> a complete register reset should be 0xfe, not 0xff. So go ahead and
> update to the correct value.
>
> Reported-by: Stephane Le Provost <[email protected]>
> Tested-by: Stephane Le Provost <[email protected]>
> Signed-off-by: Andreas Dannenberg <[email protected]>
> ---


Does 0xff not reset the device? If so then this is not just a typo but a
bug and this patch should have a fixes tag. Either way:

Acked-by: Andrew F. Davis <[email protected]>


> sound/soc/codecs/pcm186x.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/codecs/pcm186x.h b/sound/soc/codecs/pcm186x.h
> index 2c6ba55bf394..bb3f0c42a1cd 100644
> --- a/sound/soc/codecs/pcm186x.h
> +++ b/sound/soc/codecs/pcm186x.h
> @@ -139,7 +139,7 @@ enum pcm186x_type {
> #define PCM186X_MAX_REGISTER PCM186X_CURR_TRIM_CTRL
>
> /* PCM186X_PAGE */
> -#define PCM186X_RESET 0xff
> +#define PCM186X_RESET 0xfe
>
> /* PCM186X_ADCX_INPUT_SEL_X */
> #define PCM186X_ADC_INPUT_SEL_POL BIT(7)
>