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From: Wolfram Sang <wsa@kernel.org>
To: Jerome Brunet <jbrunet@baylibre.com>
Cc: Kevin Hilman <khilman@baylibre.com>,
	linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
	Nicolas Belin <nbelin@baylibre.com>,
	linux-amlogic@lists.infradead.org
Subject: Re: [PATCH 2/3] i2c: meson: keep peripheral clock enabled
Date: Thu, 8 Oct 2020 12:00:25 +0200	[thread overview]
Message-ID: <20201008100025.GD76290@ninjato> (raw)
In-Reply-To: <20201007080751.1259442-3-jbrunet@baylibre.com>


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On Wed, Oct 07, 2020 at 10:07:50AM +0200, Jerome Brunet wrote:
> SCL rate appears to be different than what is expected. For example,
> We get 164kHz on i2c3 of the vim3 when 400kHz is expected. This is
> partially due to the peripheral clock being disabled when the clock is
> set.
> 
> Let's keep the peripheral clock on after probe to fix the problem. This
> does not affect the SCL output which is still gated when i2c is idle.
> 
> Fixes: 09af1c2fa490 ("i2c: meson: set clock divider in probe instead of setting it for each transfer")
> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

Applied to for-current, thanks!


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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@kernel.org>
To: Jerome Brunet <jbrunet@baylibre.com>
Cc: Kevin Hilman <khilman@baylibre.com>,
	Nicolas Belin <nbelin@baylibre.com>,
	linux-i2c@vger.kernel.org, linux-amlogic@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] i2c: meson: keep peripheral clock enabled
Date: Thu, 8 Oct 2020 12:00:25 +0200	[thread overview]
Message-ID: <20201008100025.GD76290@ninjato> (raw)
In-Reply-To: <20201007080751.1259442-3-jbrunet@baylibre.com>

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On Wed, Oct 07, 2020 at 10:07:50AM +0200, Jerome Brunet wrote:
> SCL rate appears to be different than what is expected. For example,
> We get 164kHz on i2c3 of the vim3 when 400kHz is expected. This is
> partially due to the peripheral clock being disabled when the clock is
> set.
> 
> Let's keep the peripheral clock on after probe to fix the problem. This
> does not affect the SCL output which is still gated when i2c is idle.
> 
> Fixes: 09af1c2fa490 ("i2c: meson: set clock divider in probe instead of setting it for each transfer")
> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

Applied to for-current, thanks!


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  reply	other threads:[~2020-10-08 10:00 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-07  8:07 [PATCH 0/3] i2c: meson: scl rate fixups Jerome Brunet
2020-10-07  8:07 ` Jerome Brunet
2020-10-07  8:07 ` [PATCH 1/3] i2c: meson: fix clock setting overwrite Jerome Brunet
2020-10-07  8:07   ` Jerome Brunet
2020-10-08  9:59   ` Wolfram Sang
2020-10-08  9:59     ` Wolfram Sang
2020-10-07  8:07 ` [PATCH 2/3] i2c: meson: keep peripheral clock enabled Jerome Brunet
2020-10-07  8:07   ` Jerome Brunet
2020-10-08 10:00   ` Wolfram Sang [this message]
2020-10-08 10:00     ` Wolfram Sang
2020-10-07  8:07 ` [PATCH 3/3] i2c: meson: fixup rate calculation with filter delay Jerome Brunet
2020-10-07  8:07   ` Jerome Brunet
2020-10-08 10:00   ` Wolfram Sang
2020-10-08 10:00     ` Wolfram Sang

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