From: <Eugen.Hristev@microchip.com>
To: <wsa@the-dreams.de>, <peda@axentia.se>, <mark.rutland@arm.com>,
<Ludovic.Desroches@microchip.com>, <linux-i2c@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <pierre-yves.mordret@st.com>,
<alexandre.belloni@bootlin.com>, <robh+dt@kernel.org>
Cc: <Nicolas.Ferre@microchip.com>, <Eugen.Hristev@microchip.com>
Subject: [PATCH v4 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter
Date: Mon, 2 Sep 2019 10:12:00 +0000 [thread overview]
Message-ID: <1567418773-2427-3-git-send-email-eugen.hristev@microchip.com> (raw)
In-Reply-To: <1567418773-2427-1-git-send-email-eugen.hristev@microchip.com>
From: Eugen Hristev <eugen.hristev@microchip.com>
Some i2c controllers have a built-in digital or analog filter.
This is specifically required depending on the hardware PCB/board.
Some controllers also allow specifying the maximum width of the
spikes that can be filtered. The width length can be specified in nanoseconds.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Documentation/devicetree/bindings/i2c/i2c.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index 44efafd..8dbff67 100644
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -55,6 +55,17 @@ wants to support one of the below features, it should adapt the bindings below.
Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C
specification.
+- i2c-analog-filter
+ Enable analog filter for i2c lines.
+
+- i2c-digital-filter
+ Enable digital filter for i2c lines.
+
+- i2c-filter-width-ns
+ Width of spikes which can be filtered by either digital or analog
+ filters (i2c-analog-filtr or i2c-digital-filtr). This width is specified
+ in nanoseconds.
+
- interrupts
interrupts used by the device.
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: <Eugen.Hristev@microchip.com>
To: wsa@the-dreams.de, peda@axentia.se, mark.rutland@arm.com,
Ludovic.Desroches@microchip.com, linux-i2c@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, pierre-yves.mordret@st.com,
alexandre.belloni@bootlin.com, robh+dt@kernel.org
Cc: Nicolas.Ferre@microchip.com, Eugen.Hristev@microchip.com
Subject: [PATCH v4 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter
Date: Mon, 2 Sep 2019 10:12:00 +0000 [thread overview]
Message-ID: <1567418773-2427-3-git-send-email-eugen.hristev@microchip.com> (raw)
In-Reply-To: <1567418773-2427-1-git-send-email-eugen.hristev@microchip.com>
From: Eugen Hristev <eugen.hristev@microchip.com>
Some i2c controllers have a built-in digital or analog filter.
This is specifically required depending on the hardware PCB/board.
Some controllers also allow specifying the maximum width of the
spikes that can be filtered. The width length can be specified in nanoseconds.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Documentation/devicetree/bindings/i2c/i2c.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index 44efafd..8dbff67 100644
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -55,6 +55,17 @@ wants to support one of the below features, it should adapt the bindings below.
Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C
specification.
+- i2c-analog-filter
+ Enable analog filter for i2c lines.
+
+- i2c-digital-filter
+ Enable digital filter for i2c lines.
+
+- i2c-filter-width-ns
+ Width of spikes which can be filtered by either digital or analog
+ filters (i2c-analog-filtr or i2c-digital-filtr). This width is specified
+ in nanoseconds.
+
- interrupts
interrupts used by the device.
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: <Eugen.Hristev@microchip.com>
To: <wsa@the-dreams.de>, <peda@axentia.se>, <mark.rutland@arm.com>,
<Ludovic.Desroches@microchip.com>, <linux-i2c@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <pierre-yves.mordret@st.com>,
<alexandre.belloni@bootlin.com>, <robh+dt@kernel.org>
Cc: Eugen.Hristev@microchip.com
Subject: [PATCH v4 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter
Date: Mon, 2 Sep 2019 10:12:00 +0000 [thread overview]
Message-ID: <1567418773-2427-3-git-send-email-eugen.hristev@microchip.com> (raw)
In-Reply-To: <1567418773-2427-1-git-send-email-eugen.hristev@microchip.com>
From: Eugen Hristev <eugen.hristev@microchip.com>
Some i2c controllers have a built-in digital or analog filter.
This is specifically required depending on the hardware PCB/board.
Some controllers also allow specifying the maximum width of the
spikes that can be filtered. The width length can be specified in nanoseconds.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Documentation/devicetree/bindings/i2c/i2c.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index 44efafd..8dbff67 100644
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -55,6 +55,17 @@ wants to support one of the below features, it should adapt the bindings below.
Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C
specification.
+- i2c-analog-filter
+ Enable analog filter for i2c lines.
+
+- i2c-digital-filter
+ Enable digital filter for i2c lines.
+
+- i2c-filter-width-ns
+ Width of spikes which can be filtered by either digital or analog
+ filters (i2c-analog-filtr or i2c-digital-filtr). This width is specified
+ in nanoseconds.
+
- interrupts
interrupts used by the device.
--
2.7.4
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linux-arm-kernel@lists.infradead.org
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next prev parent reply other threads:[~2019-09-02 10:12 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-02 10:11 [PATCH v4 0/9] i2c: add support for filters Eugen.Hristev
2019-09-02 10:11 ` Eugen.Hristev
2019-09-02 10:11 ` Eugen.Hristev
2019-09-02 10:11 ` [PATCH v4 1/9] dt-bindings: i2c: at91: add new compatible Eugen.Hristev
2019-09-02 10:11 ` Eugen.Hristev
2019-09-02 10:11 ` Eugen.Hristev
2019-09-02 10:44 ` Peter Rosin
2019-09-02 10:44 ` Peter Rosin
2019-09-02 10:44 ` Peter Rosin
2019-09-02 14:12 ` Eugen.Hristev
2019-09-02 14:12 ` Eugen.Hristev
2019-09-02 14:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev [this message]
2019-09-02 10:12 ` [PATCH v4 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:49 ` Peter Rosin
2019-09-02 10:49 ` Peter Rosin
2019-09-02 10:49 ` Peter Rosin
2019-09-02 14:15 ` Eugen.Hristev
2019-09-02 14:15 ` Eugen.Hristev
2019-09-02 14:15 ` Eugen.Hristev
2019-09-02 14:22 ` Alexandre Belloni
2019-09-02 14:22 ` Alexandre Belloni
2019-09-02 14:40 ` Peter Rosin
2019-09-02 14:40 ` Peter Rosin
2019-09-02 14:40 ` Peter Rosin
2019-09-02 15:47 ` Wolfram Sang
2019-09-02 15:47 ` Wolfram Sang
2019-09-02 10:12 ` [PATCH v4 3/9] i2c: add support for filter-width-ns optional property Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 4/9] i2c: at91: add new platform support for sam9x60 Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 5/9] i2c: at91: add support for digital filtering Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 6/9] i2c: at91: add support for advanced " Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 7/9] i2c: at91: add support for analog filtering Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 8/9] ARM: dts: at91: sama5d2_xplained: add analog and digital filter for i2c Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` [PATCH v4 9/9] ARM: dts: at91: sama5d4_xplained: add " Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
2019-09-02 10:12 ` Eugen.Hristev
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