Date:   Wed, 22 Dec 2021 13:18:25 -0400
From:   Rob Herring <robh@kernel.org>
To:     YC Hung <yc.hung@mediatek.com>
Cc:     broonie@kernel.org, tiwai@suse.com, matthias.bgg@gmail.com,
        alsa-devel@alsa-project.org, linux-mediatek@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org, daniel.baluta@nxp.com,
        trevor.wu@mediatek.com, allen-kh.cheng@mediatek.com
Subject: Re: [PATCH v2] dt-bindings: dsp: mediatek: add mt8195 dsp document
Message-ID: <YcNd4RXYldP8uWgg@robh.at.kernel.org>
References: <20211217070835.31709-1-yc.hung@mediatek.com>
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On Fri, Dec 17, 2021 at 03:08:36PM +0800, YC Hung wrote:
> From: "yc.hung" <yc.hung@mediatek.com>

Should be 'YC Hung'?

> 
> This patch adds mt8195 dsp document.
> 
> Signed-off-by: yc.hung <yc.hung@mediatek.com>
> ---
> Changes since v1:
>   Rename yaml file name as mediatek,mt8195-dsp.yaml
>   Refine descriptions for mailbox, memory-region and drop unused labels
>   in examples.
> ---
>  .../bindings/dsp/mediatek,mt8195-dsp.yaml     | 117 ++++++++++++++++++
>  1 file changed, 117 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml b/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
> new file mode 100644
> index 000000000000..bde763191d86
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
> @@ -0,0 +1,117 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dsp/mediatek,mt8195-dsp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek mt8195 DSP core
> +
> +maintainers:
> +  - YC Hung <yc.hung@mediatek.com>
> +
> +description: |
> +  Some boards from mt8195 contain a DSP core used for
> +  advanced pre- and post- audio processing.
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt8195-dsp
> +
> +  reg:
> +    items:
> +      - description: Address and size of the DSP Cfg registers
> +      - description: Address and size of the DSP SRAM
> +
> +  reg-names:
> +    items:
> +      - const: cfg
> +      - const: sram
> +
> +  interrupts:
> +    items:
> +      - description: watchdog interrupt
> +
> +  interrupt-names:
> +    items:
> +      - const: wdt
> +
> +  clocks:
> +    items:
> +      - description: mux for audio dsp clock
> +      - description: 26M clock
> +      - description: mux for audio dsp local bus
> +      - description: default audio dsp local bus clock source
> +      - description: clock gate for audio dsp clock
> +      - description: mux for audio dsp access external bus
> +
> +  clock-names:
> +    items:
> +      - const: adsp_sel
> +      - const: clk26m_ck
> +      - const: audio_local_bus
> +      - const: mainpll_d7_d2
> +      - const: scp_adsp_audiodsp
> +      - const: audio_h
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  mboxes:
> +    items:
> +      - description: ipc reply between host and audio DSP.
> +      - description: ipc reuqest between host and audio DSP.
> +
> +  mbox-names:
> +    items:
> +      - const: mbox0
> +      - const: mbox1
> +
> +  memory-region:      
> +    items:
> +      - description: dma buffer between host and DSP.   
> +      - description: DSP system memory.
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - interrupts
> +  - interrupt-names
> +  - clocks
> +  - clock-names
> +  - memory-region
> +  - power-domains
> +  - mbox-names
> +  - mboxes
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    dsp@10803000 {
> +       compatible =  "mediatek,mt8195-dsp";
> +       reg = <0x10803000  0x1000>,
> +             <0x10840000  0x40000>;
> +       reg-names = "cfg", "sram";
> +       interrupts = <GIC_SPI 694 IRQ_TYPE_LEVEL_HIGH 0>;
> +       interrupt-names = "wdt";
> +       clocks = <&topckgen 10>, //CLK_TOP_ADSP
> +                <&clk26m>,
> +                <&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS
> +                <&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2
> +                <&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP
> +                <&topckgen 34>; //CLK_TOP_AUDIO_H
> +       clock-names = "adsp_sel",
> +                     "clk26m_ck",
> +                     "audio_local_bus",
> +                     "mainpll_d7_d2",
> +                     "scp_adsp_audiodsp",
> +                     "audio_h";
> +       memory-region = <&adsp_dma_mem_reserved>,
> +                       <&adsp_mem_reserved>;
> +       power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
> +       mbox-names = "mbox0", "mbox1";
> +       mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
> +    };
> -- 
> 2.18.0
> 
>