On SoCFPGA systems, it's desireable to have fixed numbering for
i2c busses, while being able to enable/disable them (e.g. have i2c1
be mapped to /dev/i2c-1, even though i2c0 is disabled). This can also
be achieved using devicetree aliases (see i2c_add_adapter). However,
having the driver be self-contained without relying on aliases is more
robust.
Signed-off-by: Paweł Anikiel <pan@xxxxxxxxxxxx>
---
.../devicetree/bindings/i2c/snps,designware-i2c.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
index d9293c57f573..1e02ddcbd690 100644
--- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
@@ -93,6 +93,11 @@ properties:
- const: tx
- const: rx
+ busno:
+ description: |
+ The property should contain the desired bus number (as opposed to
+ being assigned automatically)
+
unevaluatedProperties: false
required:
--
2.25.1
