[PATCH v4 4/6] dt-bindings: i3c: Make 'assigned-address' valid if static address == 0

Przemysław Gaj
2019-12-10T10:15:57Z

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(-)

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.