From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> To: <linux-i2c@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org> Cc: <wsa@kernel.org>, <robh+dt@kernel.org>, <ludovic.desroches@microchip.com>, <nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>, <linux@armlinux.org.uk>, <kamel.bouhara@bootlin.com>, Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Subject: [RFC PATCH 1/4] dt-binding: i2c: add generic properties for GPIO bus recovery Date: Fri, 19 Jun 2020 17:19:01 +0300 [thread overview] Message-ID: <20200619141904.910889-2-codrin.ciubotariu@microchip.com> (raw) In-Reply-To: <20200619141904.910889-1-codrin.ciubotariu@microchip.com> The I2C GPIO bus recovery properties consist of two GPIOS and one extra pinctrl state ("gpio" or "recovery"). Not all are mandatory for recovery. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Documentation/devicetree/bindings/i2c/i2c.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 438ae123107e..6a644a24fc1c 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -77,6 +77,16 @@ wants to support one of the below features, it should adapt these bindings. this information to detect a stalled bus more reliably, for example. Can not be combined with 'multi-master'. +- scl-gpios + specify the gpio related to SCL pin. Used for GPIO bus recovery. + +- sda-gpios + specify the gpio related to SDA pin. Optional for GPIO bus recovery. + +- pinctrl + add extra pinctrl to configure SCL/SDA pins to GPIO function for bus + recovery, call it "gpio" or "recovery" state + Required properties (per child device) -------------------------------------- -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> To: <linux-i2c@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org> Cc: kamel.bouhara@bootlin.com, alexandre.belloni@bootlin.com, linux@armlinux.org.uk, wsa@kernel.org, ludovic.desroches@microchip.com, robh+dt@kernel.org, Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Subject: [RFC PATCH 1/4] dt-binding: i2c: add generic properties for GPIO bus recovery Date: Fri, 19 Jun 2020 17:19:01 +0300 [thread overview] Message-ID: <20200619141904.910889-2-codrin.ciubotariu@microchip.com> (raw) In-Reply-To: <20200619141904.910889-1-codrin.ciubotariu@microchip.com> The I2C GPIO bus recovery properties consist of two GPIOS and one extra pinctrl state ("gpio" or "recovery"). Not all are mandatory for recovery. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Documentation/devicetree/bindings/i2c/i2c.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 438ae123107e..6a644a24fc1c 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -77,6 +77,16 @@ wants to support one of the below features, it should adapt these bindings. this information to detect a stalled bus more reliably, for example. Can not be combined with 'multi-master'. +- scl-gpios + specify the gpio related to SCL pin. Used for GPIO bus recovery. + +- sda-gpios + specify the gpio related to SDA pin. Optional for GPIO bus recovery. + +- pinctrl + add extra pinctrl to configure SCL/SDA pins to GPIO function for bus + recovery, call it "gpio" or "recovery" state + Required properties (per child device) -------------------------------------- -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-06-19 14:20 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-19 14:19 [RFC PATCH 0/4] i2c: core: add generic GPIO bus recovery Codrin Ciubotariu 2020-06-19 14:19 ` Codrin Ciubotariu 2020-06-19 14:19 ` Codrin Ciubotariu [this message] 2020-06-19 14:19 ` [RFC PATCH 1/4] dt-binding: i2c: add generic properties for " Codrin Ciubotariu 2020-07-05 21:19 ` Wolfram Sang 2020-07-05 21:19 ` Wolfram Sang 2020-07-24 19:39 ` Wolfram Sang 2020-07-24 19:39 ` Wolfram Sang 2020-07-24 20:52 ` Russell King - ARM Linux admin 2020-07-24 20:52 ` Russell King - ARM Linux admin 2020-07-27 10:44 ` Codrin.Ciubotariu 2020-07-27 10:44 ` Codrin.Ciubotariu 2020-07-27 10:50 ` Russell King - ARM Linux admin 2020-07-27 10:50 ` Russell King - ARM Linux admin 2020-07-30 9:00 ` Codrin.Ciubotariu 2020-07-30 9:00 ` Codrin.Ciubotariu 2020-08-03 14:16 ` Russell King - ARM Linux admin 2020-08-03 14:16 ` Russell King - ARM Linux admin 2020-08-03 16:42 ` Codrin.Ciubotariu 2020-08-03 16:42 ` Codrin.Ciubotariu 2020-07-15 19:21 ` Rob Herring 2020-07-15 19:21 ` Rob Herring 2020-06-19 14:19 ` [RFC PATCH 2/4] i2c: core: add generic I2C GPIO recovery Codrin Ciubotariu 2020-06-19 14:19 ` Codrin Ciubotariu 2020-08-02 16:54 ` Wolfram Sang 2020-08-02 16:54 ` Wolfram Sang 2020-08-03 13:27 ` Codrin.Ciubotariu 2020-08-03 13:27 ` Codrin.Ciubotariu 2020-08-03 16:49 ` wsa 2020-08-03 16:49 ` wsa 2020-06-19 14:19 ` [RFC PATCH 3/4] i2c: core: treat EPROBE_DEFER when acquiring SCL/SDA GPIOs Codrin Ciubotariu 2020-06-19 14:19 ` Codrin Ciubotariu 2020-08-02 17:05 ` Wolfram Sang 2020-08-02 17:05 ` Wolfram Sang 2020-08-03 15:33 ` Codrin.Ciubotariu 2020-08-03 15:33 ` Codrin.Ciubotariu 2020-08-03 16:59 ` wsa 2020-08-03 16:59 ` wsa 2020-06-19 14:19 ` [RFC PATCH 4/4] i2c: at91: Move to generic GPIO bus recovery Codrin Ciubotariu 2020-06-19 14:19 ` Codrin Ciubotariu 2020-08-02 17:08 ` Wolfram Sang 2020-08-02 17:08 ` Wolfram Sang 2020-08-03 15:42 ` Codrin.Ciubotariu 2020-08-03 15:42 ` Codrin.Ciubotariu 2020-08-03 16:59 ` wsa 2020-08-03 16:59 ` wsa 2020-08-26 6:14 ` Wolfram Sang 2020-08-26 6:14 ` Wolfram Sang 2020-09-04 8:55 ` Codrin.Ciubotariu 2020-09-04 8:55 ` Codrin.Ciubotariu 2020-09-04 9:20 ` Wolfram Sang 2020-09-04 9:20 ` Wolfram Sang 2020-07-05 21:09 ` [RFC PATCH 0/4] i2c: core: add " Wolfram Sang 2020-07-05 21:09 ` Wolfram Sang
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