linux-kernel - [PATCH 1/2] media: rc: meson-irblaster: document device tree bindings

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Message-Id: <20210701215132.16317-2-viktor.prutyanov@phystech.edu>
Date:   Fri,  2 Jul 2021 00:51:31 +0300
From:   Viktor Prutyanov <viktor.prutyanov@...stech.edu>
To:     sean@...s.org, mchehab@...nel.org, robh+dt@...nel.org,
        khilman@...libre.com, narmstrong@...libre.com
Cc:     jbrunet@...libre.com, martin.blumenstingl@...glemail.com,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, rockosov@...il.com,
        Viktor Prutyanov <viktor.prutyanov@...stech.edu>
Subject: [PATCH 1/2] media: rc: meson-irblaster: document device tree bindings

This patch adds binding documentation for the IR transmitter
available in Amlogic Meson SoCs.

Signed-off-by: Viktor Prutyanov <viktor.prutyanov@...stech.edu>
---
 .../media/amlogic,meson-irblaster.yaml        | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/amlogic,meson-irblaster.yaml

diff --git a/Documentation/devicetree/bindings/media/amlogic,meson-irblaster.yaml b/Documentation/devicetree/bindings/media/amlogic,meson-irblaster.yaml
new file mode 100644
index 000000000000..baecda092a78
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/amlogic,meson-irblaster.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/media/amlogic,meson-irblaster.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic Meson IR blaster
+
+maintainers:
+  - Viktor Prutyanov <viktor.prutyanov@...stech.edu>
+
+description: |
+  Some Amlogic SoCs such as A311D and T950D4 have IR transmitter
+  (blaster) controller onboard. It is capable of sending IR signals
+  with arbitrary carrier frequency and duty cycle.
+
+properties:
+  compatible:
+    const: amlogic,meson-irblaster
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: sysclk
+      - const: xtal
+
+  mod-clock:
+    oneOf:
+      - const: sysclk
+      - const: xtal
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/g12a-clkc.h>
+
+    meson-irblaster@...0014c {
+      compatible = "amlogic,meson-irblaster";
+      reg = <0xff80014c 0x10>;
+      interrupts = <0 198 IRQ_TYPE_EDGE_RISING>;
+      clocks = <&clkc CLKID_CLK81 &xtal>;
+      clock-names = "sysclk", "xtal";
+      mod-clock = "xtal";
+    };
-- 
2.21.0