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
WARNING: multiple messages have this Message-ID (diff)
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
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
WARNING: multiple messages have this Message-ID (diff)
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-03-13 8:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-13 8:07 qii.wang [this message]
2021-03-13 8:07 ` [PATCH] dt-bindings: i2c: Add device clock-stretch time via dts qii.wang
2021-03-13 8:07 ` qii.wang
2021-03-24 17:12 ` Rob Herring
2021-03-24 17:12 ` Rob Herring
2021-03-24 17:12 ` Rob Herring
2021-03-26 1:30 ` Qii Wang
2021-03-26 1:30 ` Qii Wang
2021-03-26 1:30 ` Qii Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1615622829-15167-1-git-send-email-qii.wang@mediatek.com \
--to=qii.wang@mediatek.com \
--cc=devicetree@vger.kernel.org \
--cc=leilk.liu@mediatek.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=matthias.bgg@gmail.com \
--cc=robh+dt@kernel.org \
--cc=srv_heupstream@mediatek.com \
--cc=wsa@the-dreams.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.