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From: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
To: Gabriel Shahrouzi <gshahrouzi@gmail.com>
Cc: gregkh@linuxfoundation.org, jic23@kernel.org, lars@metafoo.de,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-staging@lists.linux.dev, Michael.Hennerich@analog.com,
	skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev,
	stable@vger.kernel.org
Subject: Re: [PATCH] iio: frequency: Use SLEEP bit instead of RESET to disable output
Date: Sat, 19 Apr 2025 18:46:22 -0300	[thread overview]
Message-ID: <aAQZrhBLQCa0TjOJ@debian-BULLSEYE-live-builder-AMD64> (raw)
In-Reply-To: <20250417135434.568007-1-gshahrouzi@gmail.com>

On 04/17, Gabriel Shahrouzi wrote:
> According to the AD9832 datasheet (Table 10, D12 description), setting
> the RESET bit forces the phase accumulator to zero, which corresponds to
> a full-scale DC output, rather than disabling the output signal.
> 
> The correct way to disable the output and enter a low-power state is to
> set the AD9832_SLEEP bit (Table 10, D13 description), which powers down
> the internal DAC current sources and disables internal clocks.
> 
> Fixes: ea707584bac1 ("Staging: IIO: DDS: AD9832 / AD9835 driver")
> Cc: stable@vger.kernel.org
> Signed-off-by: Gabriel Shahrouzi <gshahrouzi@gmail.com>
> ---
Looks okay.

Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>

Unrelated to this patch but, if anybody be looking to work on getting this out
of staging, I think maybe this driver could use out_altvoltage_powerdown ABI
instead of this custom out_altvoltageX_out_enable.
Crazy thing this driver doesn't declare a single IIO channel.
Seems to be somewhat ancient IIO driver.

Regards,
Marcelo

  parent reply	other threads:[~2025-04-19 21:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-17 13:54 [PATCH] iio: frequency: Use SLEEP bit instead of RESET to disable output Gabriel Shahrouzi
2025-04-18 15:40 ` Jonathan Cameron
2025-04-18 17:01   ` Gabriel Shahrouzi
2025-04-19 21:46 ` Marcelo Schmitt [this message]
2025-04-20  1:41   ` Gabriel Shahrouzi
2025-04-21 11:07     ` Jonathan Cameron
2025-04-21 13:38       ` Gabriel Shahrouzi

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