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[v2,2/3] dt-bindings: counter: atmel-tcb-capture counter

Message ID 20200409141401.321222-3-kamel.bouhara@bootlin.com
State New
Headers show
Series None | expand

Commit Message

Kamel Bouhara April 9, 2020, 2:14 p.m. UTC 
Describe the devicetree binding for the ATMEL TCB counter. Each counter
blocks exposes three independent counters.

However, when configured in quadrature decoder, both channel <0> and <1>
are required for speed/position and rotation capture (yet only the
position is captured).

Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
---
 .../bindings/counter/atmel-tcb-capture.yaml   | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/counter/atmel-tcb-capture.yaml
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Patch

diff --git a/Documentation/devicetree/bindings/counter/atmel-tcb-capture.yaml b/Documentation/devicetree/bindings/counter/atmel-tcb-capture.yaml
new file mode 100644
index 000000000000..ca8b31c1f869
--- /dev/null
+++ b/Documentation/devicetree/bindings/counter/atmel-tcb-capture.yaml
@@ -0,0 +1,35 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/counter/atmel-tcb-capture.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel TCB Counter
+
+maintainers:
+  - Kamel Bouhara <kamel.bouhara@bootlin.com>
+
+properties:
+  compatible:
+    const: "atmel,tcb-capture"
+
+  reg:
+    description: TCB capture channel to register as counter device.
+      Each channel is independent therefore only one channel is
+      registered by default execpt for the QDEC mode where both TCB0's
+      channels <0> and  <1> are required.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    tcb0: timer@f800c000 {
+        qdec: timer@0 {
+            compatible = "atmel,tcb-capture";
+            reg = <0>, <1>;
+        };
+    };