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@xxxxxxxxxxx> --- .../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@xxxxxxxxxxx> + +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
