From: Kamel Bouhara <kamel.bouhara@bootlin.com>
To: William Breathitt Gray <vilhelm.gray@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Ludovic Desroches <ludovic.desroches@microchip.com>,
linux-arm-kernel@lists.infradead.org
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
linux-input@vger.kernel.org, devicetree@vger.kernel.org,
linux-iio@vger.kernel.org,
Kamel Bouhara <kamel.bouhara@bootlin.com>
Subject: [PATCH v2 2/3] dt-bindings: counter: atmel-tcb-capture counter
Date: Thu, 9 Apr 2020 16:14:00 +0200 [thread overview]
Message-ID: <20200409141401.321222-3-kamel.bouhara@bootlin.com> (raw)
In-Reply-To: <20200409141401.321222-1-kamel.bouhara@bootlin.com>
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
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>;
+ };
+ };
--
2.25.0
next prev parent reply other threads:[~2020-04-09 14:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 14:13 [PATCH v2 0/3] Atmel TCB capture driver Kamel Bouhara
2020-04-09 14:13 ` [PATCH v2 1/3] ARM: at91: add atmel tcb capabilities Kamel Bouhara
2020-04-12 10:31 ` Jonathan Cameron
2020-04-14 8:51 ` Kamel Bouhara
2020-04-09 14:14 ` Kamel Bouhara [this message]
2020-04-09 23:11 ` [PATCH v2 2/3] dt-bindings: counter: atmel-tcb-capture counter Rob Herring
2020-04-09 14:14 ` [PATCH v2 3/3] counter: Add atmel TCB capture counter Kamel Bouhara
2020-04-12 10:44 ` Jonathan Cameron
2020-04-15 8:40 ` Kamel Bouhara
2020-04-11 16:01 ` [PATCH v2 0/3] Atmel TCB capture driver William Breathitt Gray
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