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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
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


  reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-19 14:19 [RFC PATCH 0/4] i2c: core: add generic " Codrin Ciubotariu
2020-06-19 14:19 ` Codrin Ciubotariu [this message]
2020-07-05 21:19   ` [RFC PATCH 1/4] dt-binding: i2c: add generic properties for " Wolfram Sang
2020-07-24 19:39     ` Wolfram Sang
2020-07-24 20:52       ` Russell King - ARM Linux admin
2020-07-27 10:44         ` Codrin.Ciubotariu
2020-07-27 10:50           ` Russell King - ARM Linux admin
2020-07-30  9:00             ` Codrin.Ciubotariu
2020-08-03 14:16               ` Russell King - ARM Linux admin
2020-08-03 16:42                 ` Codrin.Ciubotariu
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
2020-08-02 16:54   ` Wolfram Sang
2020-08-03 13:27     ` Codrin.Ciubotariu
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
2020-08-02 17:05   ` Wolfram Sang
2020-08-03 15:33     ` Codrin.Ciubotariu
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
2020-08-02 17:08   ` Wolfram Sang
2020-08-03 15:42     ` Codrin.Ciubotariu
2020-08-03 16:59       ` wsa
2020-08-26  6:14       ` Wolfram Sang
2020-09-04  8:55         ` Codrin.Ciubotariu
2020-09-04  9:20           ` Wolfram Sang
2020-07-05 21:09 ` [RFC PATCH 0/4] i2c: core: add " Wolfram Sang

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