[PATCH v4 1/4] dt-bindings: media: ti,ds90ub953: Add new range for remote GPIO data

[Guoniu Zhou <guoniu.zhou@oss.nxp.com>]

From: Guoniu Zhou <guoniu.zhou@nxp.com>

The DS90UB953 supports four pins, GPIO0 through GPIO3. When enabled as an
output, it can be programed to output local data or remote data coming
from the remote compatible deserializer.

Make a different GPIO range for remote ones.

Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
---
 Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
index 2e129bf573b79e0ca8f25b4ec5fc6ea76c50abd7..0444f3739b775848d17adfebc4158e83b69adf9c 100644
--- a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
@@ -20,9 +20,13 @@ properties:
 
   '#gpio-cells':
     const: 2
-    description:
+    description: >
       First cell is the GPIO pin number, second cell is the flags. The GPIO pin
-      number must be in range of [0, 3].
+      number must be in range of [0, 3] when enabled as an input.
+
+      If enabled as an output, the GPIO pin number must be in range of
+      [0, 7] and [0, 3] for local GPIO data, [4, 7] for GPIO data coming
+      from remote compatible deserializer.
 
   gpio-controller: true
 

-- 
2.34.1