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Subject[PATCH 3/7] dt-bindings: misc: Add binding for R-Car DAB
Date
Document bindings for R-Car DAB hardware accelerator, currently
found on the r8a77990 SoC (a.k.a. R-Car E3) and on the r8a77965
SoC (a.k.a. R-Car M3-N).

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
.../devicetree/bindings/misc/renesas,dab.yaml | 75 +++++++++++++++++++
1 file changed, 75 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/renesas,dab.yaml

diff --git a/Documentation/devicetree/bindings/misc/renesas,dab.yaml b/Documentation/devicetree/bindings/misc/renesas,dab.yaml
new file mode 100644
index 000000000000..e9494add13d7
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/renesas,dab.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 Renesas Electronics Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/renesas,dab.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car DAB Hardware Accelerator
+
+maintainers:
+ - Fabrizio Castro <fabrizio.castro.jz@renesas.com>
+
+description:
+ The DAB hardware accelerator found on some R-Car devices is a hardware
+ accelerator for software DAB demodulators.
+ It consists of one FFT (Fast Fourier Transform) module and one decoder module,
+ compatible with DAB specification (ETSI EN 300 401 and ETSI TS 102 563).
+ The decoder module can perform FIC decoding and MSC decoding processing from
+ de-puncture to final decoded result.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,dab-r8a77965 # R-Car M3-N
+ - renesas,dab-r8a77990 # R-Car E3
+ - const: renesas,rcar-gen3-dab # Generic fallback for R-Car Gen3 devices
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: dab
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+ - resets
+
+additionalProperties: false
+
+examples:
+ # R8A77990 (R-Car E3)
+ - |
+ #include <dt-bindings/clock/r8a77990-cpg-mssr.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/r8a77990-sysc.h>
+
+ dab: dab@e6730000 {
+ compatible = "renesas,dab-r8a77990",
+ "renesas,rcar-gen3-dab";
+ reg = <0xe6730000 0x120>;
+ interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 1016>;
+ clock-names = "dab";
+ power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
+ resets = <&cpg 1016>;
+ status = "disabled";
+ };
--
2.25.1
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