linux-kernel - Re: [PATCH v1] meson saradc: fix clock divider mask length

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Date:   Tue, 16 May 2023 21:08:26 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     George Stark <gnstark@...rdevices.ru>
Cc:     jic23@...nel.org, lars@...afoo.de, neil.armstrong@...aro.org,
        khilman@...libre.com, jbrunet@...libre.com,
        andy.shevchenko@...il.com, nuno.sa@...log.com,
        linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...rdevices.ru
Subject: Re: [PATCH v1] meson saradc: fix clock divider mask length

Hi George,

thank you for this patch!

On Mon, May 15, 2023 at 11:06 PM George Stark <gnstark@...rdevices.ru> wrote:
>
> From: George Stark <GNStark@...rdevices.ru>
>
> According to datasheets of supported meson SOCs
> length of ADC_CLK_DIV field is 6 bits long
I have a question about this sentence which doesn't affect this patch
- it's only about managing expectations:
Which SoC are you referring to?
This divider is only relevant on older SoCs that predate GXBB (S905).
To my knowledge all SoCs from GXBB onwards place the divider in the
main or AO clock controller, so this bitmask is irrelevant there.

> Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs")
> Signed-off-by: George Stark <GNStark@...rdevices.ru>
Since my question above doesn't affect this patch:
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>