[v4,4/6] dt-bindings: i3c: Make 'assigned-address' valid if static address == 0
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Message ID 20191210101502.8401-5-pgaj@cadence.com
State New
Headers show
Series
  • I3C device addresing adjustments
Related show

Commit Message

Przemysław Gaj Dec. 10, 2019, 10:15 a.m. UTC
From: Vitor Soares <vitor.soares@synopsys.com>

The I3C devices without a static address can require a specific dynamic
address for priority reasons.

Let's update the binding document to make the 'assigned-address' property
valid if static address == 0 and add an example with this use case.

Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Przemyslaw Gaj <pgaj@cadence.com>
---
Change in v3:
  - Add Rob rb-tag

Change in v2:
  - Fix typo in commit message
---
 Documentation/devicetree/bindings/i3c/i3c.txt | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

Patch
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diff --git a/Documentation/devicetree/bindings/i3c/i3c.txt b/Documentation/devicetree/bindings/i3c/i3c.txt
index 4ffe059f0fec..7fee9b4dfba0 100644
--- a/Documentation/devicetree/bindings/i3c/i3c.txt
+++ b/Documentation/devicetree/bindings/i3c/i3c.txt
@@ -100,9 +100,7 @@  Required properties
 
 Optional properties
 -------------------
-- assigned-address: dynamic address to be assigned to this device. This
-		    property is only valid if the I3C device has a static
-		    address (first cell of the reg property != 0).
+- assigned-address: dynamic address to be assigned to this device.
 
 
 Example:
@@ -129,6 +127,15 @@  Example:
 			assigned-address = <0xa>;
 		};
 
+		/*
+		 * I3C device without a static I2C address but requiring
+		 * specific dynamic address.
+		 */
+		sensor@0,39200154004 {
+			reg = <0x0 0x6072 0x303904d2>;
+			assigned-address = <0xb>;
+		};
+
 		/*
 		 * I3C device without a static I2C address but requiring
 		 * resources described in the DT.