media: dt-bindings: media: amlogic,vdec: convert to yaml

Now that we have the DT validation in place, let's convert the device tree
bindings for the Amlogic Video Controller over to YAML schemas.

This yaml bindings will then be extended to support new SoCs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml b/Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml
new file mode 100644
index 000000000000..878944867d6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 BayLibre, SAS
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/media/amlogic,gx-vdec.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic Video Decoder
+
+maintainers:
+  - Neil Armstrong <narmstrong@baylibre.com>
+  - Maxime Jourdan <mjourdan@baylibre.com>
+
+description: |
+  The video decoding IP lies within the DOS memory region,
+  except for the hardware bitstream parser that makes use of an undocumented
+  region.
+
+  It makes use of the following blocks:
+  - ESPARSER is a bitstream parser that outputs to a VIFIFO. Further VDEC blocks
+    then feed from this VIFIFO.
+  - VDEC_1 can decode MPEG-1, MPEG-2, MPEG-4 part 2, MJPEG, H.263, H.264, VC-1.
+  - VDEC_HEVC can decode HEVC and VP9.
+
+  Both VDEC_1 and VDEC_HEVC share the "vdec" IRQ and as such cannot run
+  concurrently.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - amlogic,gxbb-vdec # GXBB (S905)
+        - amlogic,gxl-vdec # GXL (S905X, S905D)
+        - amlogic,gxm-vdec # GXM (S912)
+      - const: amlogic,gx-vdec
+
+  interrupts:
+    minItems: 2
+
+  interrupt-names:
+    items:
+      - const: vdec
+      - const: esparser
+
+  reg:
+    minItems: 2
+
+  reg-names:
+    items:
+      - const: dos
+      - const: esparser
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: esparser
+
+  clocks:
+    minItems: 4
+
+  clock-names:
+    items:
+      - const: dos_parser
+      - const: dos
+      - const: vdec_1
+      - const: vdec_hevc
+
+  amlogic,ao-sysctrl:
+    description: should point to the AOBUS sysctrl node
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+
+  amlogic,canvas:
+    description: should point to a canvas provider node
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - amlogic,ao-sysctrl
+  - amlogic,canvas
+
+examples:
+  - |
+    vdec: video-decoder@c8820000 {
+          compatible = "amlogic,gxl-vdec", "amlogic,gx-vdec";
+          reg = <0xc8820000 0x10000>, <0xc110a580 0xe4>;
+          reg-names = "dos", "esparser";
+          interrupts = <44>, <32>;
+          interrupt-names = "vdec", "esparser";
+          clocks = <&clk_dos_parser> ,<&clk_dos>, <&clk_vdec_1>, <&clk_vdec_hevc>;
+          clock-names = "dos_parser", "dos", "vdec_1", "vdec_hevc";
+          resets = <&reset_parser>;
+          reset-names = "esparser";
+          amlogic,ao-sysctrl = <&sysctrl_AO>;
+          amlogic,canvas = <&canvas>;
+    };