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[1/4] dt-binding: i2c: add generic properties for GPIO bus recovery

Message ID 20200804095926.205643-2-codrin.ciubotariu@microchip.com
State New
Headers show
Series [1/4] dt-binding: i2c: add generic properties for GPIO bus recovery | expand

Commit Message

Codrin Ciubotariu Aug. 4, 2020, 9:59 a.m. UTC 
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 mbox series

Patch

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)
 --------------------------------------