From: <qii.wang@mediatek.com>
To: <robh+dt@kernel.org>
Cc: <matthias.bgg@gmail.com>, <wsa@the-dreams.de>,
<devicetree@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>,
<qii.wang@mediatek.com>
Subject: [PATCH] dt-bindings: i2c: Add device clock-stretch time via dts
Date: Sat, 13 Mar 2021 16:07:09 +0800 [thread overview]
Message-ID: <1615622829-15167-1-git-send-email-qii.wang@mediatek.com> (raw)
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>
---
Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
index 7f0194f..97f66f0 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
@@ -32,6 +32,7 @@ Optional properties:
- mediatek,have-pmic: platform can control i2c form special pmic side.
Only mt6589 and mt8135 support this feature.
- mediatek,use-push-pull: IO config use push-pull mode.
+ - clock-stretch-ns: Slave device clock-stretch time.
Example:
--
1.9.1
next reply other threads:[~2021-03-13 8:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-13 8:07 qii.wang [this message]
2021-03-24 17:12 ` [PATCH] dt-bindings: i2c: Add device clock-stretch time via dts Rob Herring
2021-03-26 1:30 ` Qii Wang
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