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[v6,4/9] dt-bindings: i2c: iproc: make 'interrupts' optional

Message ID 20190403011830.3254-5-ray.jui@broadcom.com (mailing list archive)
State New, archived
Headers show
Series iProc I2C slave mode and NIC mode | expand

Commit Message

Ray Jui April 3, 2019, 1:18 a.m. UTC 
Update the binding document to make the 'interrupts' property optional.
For certain revisions of the I2C controller (e.g., iProc NIC I2C), I2C
interrupt is unwired to the interrupt controller. In such case, this
'interrupts' property should be left unspecified, and driver will fall
back to polling mode

Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/i2c/brcm,iproc-i2c.txt        | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
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Patch

diff --git a/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt
index 81f982ccca31..7a32bf81bfa9 100644
--- a/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt
@@ -9,9 +9,6 @@  Required properties:
     Define the base and range of the I/O address space that contain the iProc
     I2C controller registers
 
-- interrupts:
-    Should contain the I2C interrupt
-
 - clock-frequency:
     This is the I2C bus clock. Need to be either 100000 or 400000
 
@@ -21,6 +18,14 @@  Required properties:
 - #size-cells:
     Always 0
 
+Optional properties:
+
+- interrupts:
+    Should contain the I2C interrupt. For certain revisions of the I2C
+    controller, I2C interrupt is unwired to the interrupt controller. In such
+    case, this property should be left unspecified, and driver will fall back
+    to polling mode
+
 Example:
 	i2c0: i2c@18008000 {
 		compatible = "brcm,iproc-i2c";