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: [PATCH 1/4] dt-binding: i2c: add generic properties for GPIO bus recovery Date: Tue, 4 Aug 2020 12:59:23 +0300 [thread overview] Message-ID: <20200804095926.205643-2-codrin.ciubotariu@microchip.com> (raw) In-Reply-To: <20200804095926.205643-1-codrin.ciubotariu@microchip.com> The I2C GPIO bus recovery properties consist of two GPIOS and one extra pinctrl state ("gpio" or "recovery"). "recovery" pinctrl state is considered deprecated and "gpio" should be used instead. Not all are mandatory for recovery. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Changes from RFC: - "recovery" pinctrl state marked as deprecated; updated description to reflect this; 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..150a67da633d 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"(deprecated) 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: [PATCH 1/4] dt-binding: i2c: add generic properties for GPIO bus recovery Date: Tue, 4 Aug 2020 12:59:23 +0300 [thread overview] Message-ID: <20200804095926.205643-2-codrin.ciubotariu@microchip.com> (raw) In-Reply-To: <20200804095926.205643-1-codrin.ciubotariu@microchip.com> The I2C GPIO bus recovery properties consist of two GPIOS and one extra pinctrl state ("gpio" or "recovery"). "recovery" pinctrl state is considered deprecated and "gpio" should be used instead. Not all are mandatory for recovery. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Changes from RFC: - "recovery" pinctrl state marked as deprecated; updated description to reflect this; 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..150a67da633d 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"(deprecated) 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:[~2020-08-04 10:00 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-04 9:59 [PATCH 0/4] i2c: core: add generic GPIO bus recovery Codrin Ciubotariu 2020-08-04 9:59 ` Codrin Ciubotariu 2020-08-04 9:59 ` Codrin Ciubotariu [this message] 2020-08-04 9:59 ` [PATCH 1/4] dt-binding: i2c: add generic properties for " Codrin Ciubotariu 2020-08-05 8:28 ` wsa 2020-08-05 8:28 ` wsa 2020-08-04 9:59 ` [PATCH 2/4] i2c: core: add generic I2C GPIO recovery Codrin Ciubotariu 2020-08-04 9:59 ` Codrin Ciubotariu 2020-08-05 8:36 ` wsa 2020-08-05 8:36 ` wsa 2020-08-04 9:59 ` [PATCH 3/4] i2c: core: treat EPROBE_DEFER when acquiring SCL/SDA GPIOs Codrin Ciubotariu 2020-08-04 9:59 ` Codrin Ciubotariu 2020-08-05 8:40 ` wsa 2020-08-05 8:40 ` wsa 2020-08-04 9:59 ` [PATCH 4/4] i2c: at91: Move to generic GPIO bus recovery Codrin Ciubotariu 2020-08-04 9:59 ` Codrin Ciubotariu 2020-08-05 8:41 ` wsa 2020-08-05 8:41 ` wsa 2020-08-05 8:52 ` [PATCH 0/4] i2c: core: add " wsa 2020-08-05 8:52 ` wsa 2020-08-05 10:29 ` Codrin.Ciubotariu 2020-08-05 10:29 ` Codrin.Ciubotariu 2020-08-05 11:17 ` wsa 2020-08-05 11:17 ` wsa
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