linux-kernel - Re: [PATCH v2 2/2] i2c: meson: Use 50% duty cycle for I2C clock

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Date:   Fri, 15 Apr 2022 23:45:20 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Lucas Tanure <tanure@...ux.com>
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] i2c: meson: Use 50% duty cycle for I2C clock

On Sat, Apr 09, 2022 at 05:43:34PM +0100, Lucas Tanure wrote:
> The duty cycle of 33% is less than the required
> by the I2C specs for the LOW period of the SCL
> clock.
> 
> Move the duty cyle to 50% for 100Khz or lower
> clocks, and (40% High SCL / 60% Low SCL) duty
> cycle for clocks above 100Khz.
> 
> Signed-off-by: Lucas Tanure <tanure@...ux.com>

Applied to for-next, thanks!


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