From: Wolfram Sang <wsa@the-dreams.de>
To: qii.wang@mediatek.com
Cc: matthias.bgg@gmail.com, linux-i2c@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
srv_heupstream@mediatek.com, leilk.liu@mediatek.com
Subject: Re: [RESEND] i2c: mediatek: Get device clock-stretch time via dts
Date: Tue, 6 Apr 2021 21:48:56 +0200 [thread overview]
Message-ID: <20210406194856.GF3122@kunai> (raw)
In-Reply-To: <1615622664-15032-1-git-send-email-qii.wang@mediatek.com>
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On Sat, Mar 13, 2021 at 04:04:24PM +0800, qii.wang@mediatek.com wrote:
> From: Qii Wang <qii.wang@mediatek.com>
>
> tSU,STA/tHD,STA/tSU,STOP maybe out of spec due to device
> clock-stretching or circuit loss, we could get device
> clock-stretch time from dts to adjust these parameters
> to meet the spec via EXT_CONF register.
>
> Signed-off-by: Qii Wang <qii.wang@mediatek.com>
I tried to understand from the code what the new binding expresses, but
I don't fully understand it. Is it the maximum clock stretch time?
Because I cannot recall a device which always uses the same delay for
clock stretching.
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next prev parent reply other threads:[~2021-04-06 19:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-13 8:04 [RESEND] i2c: mediatek: Get device clock-stretch time via dts qii.wang
2021-03-18 11:23 ` Wolfram Sang
2021-04-06 19:48 ` Wolfram Sang [this message]
2021-04-07 12:15 ` Qii Wang
2021-04-07 18:19 ` Wolfram Sang
2021-04-12 12:03 ` Qii Wang
2021-04-13 20:17 ` Wolfram Sang
2021-04-14 1:37 ` Qii Wang
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