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Date: Mon, 5 Jul 2021 15:01:26 +0800
From: Trevor Wu <trevor.wu@...iatek.com>
To: Rob Herring <robh@...nel.org>
CC: <broonie@...nel.org>, <tiwai@...e.com>, <matthias.bgg@...il.com>,
<alsa-devel@...a-project.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<bicycle.tsai@...iatek.com>, <jiaxin.yu@...iatek.com>,
<cychiang@...gle.com>, <aaronyu@...gle.com>
Subject: Re: [PATCH v2 6/8] dt-bindings: mediatek: mt8195: add audio afe
document
On Thu, 2021-07-01 at 14:18 -0600, Rob Herring wrote:
> On Tue, Jun 29, 2021 at 09:47:34AM +0800, Trevor Wu wrote:
> > This patch adds mt8195 audio afe document.
> >
> > Signed-off-by: Trevor Wu <trevor.wu@...iatek.com>
> > ---
> > This patch depends on the following series that have not been
> > accepted.
> >
> > [1] Mediatek MT8195 clock support
> >
https://patchwork.kernel.org/project/linux-mediatek/list/?series=501923
> > (dt-bindings/clock/mt8195-clk.h is included)
> >
> > [2] Mediatek MT8195 power domain support
> >
https://patchwork.kernel.org/project/linux-mediatek/list/?series=500709
> > (dt-bindings/power/mt8195-power.h is included)
> > ---
> > .../bindings/sound/mt8195-afe-pcm.yaml | 136
> > ++++++++++++++++++
> > 1 file changed, 136 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/sound/mt8195-
> > afe-pcm.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/sound/mt8195-afe-
> > pcm.yaml b/Documentation/devicetree/bindings/sound/mt8195-afe-
> > pcm.yaml
> > new file mode 100644
> > index 000000000000..a4fb5c7dd022
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/mt8195-afe-pcm.yaml
> > @@ -0,0 +1,136 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/sound/mt8195-afe-pcm.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Mediatek AFE PCM controller for mt8195
> > +
> > +maintainers:
> > + - Trevor Wu <trevor.wu@...iatek.com>
> > +
> > +properties:
> > + compatible:
> > + const: mediatek,mt8195-audio
> > +
> > + interrupts:
> > + maxItems: 1
> > +
> > + mediatek,topckgen:
> > + $ref: "/schemas/types.yaml#/definitions/phandle"
> > + description: The phandle of the mediatek topckgen controller
> > +
> > + power-domains:
> > + maxItems: 1
> > +
> > + clocks:
> > + items:
> > + - description: audio 26M clock
> > + - description: AFE clock
> > + - description: audio infra sys clock
> > + - description: audio infra 26M clock
> > +
> > + clock-names:
> > + items:
> > + - const: clk26m
> > + - const: aud_afe
> > + - const: infra_ao_audio
> > + - const: infra_ao_audio_26m_b
> > +
> > + etdm-in1-chn-disabled:
>
> Needs a vendor prefix.
>
> > + $ref: /schemas/types.yaml#/definitions/uint8-array
> > + maxItems: 24
> > + description: Specify which input channel should be disabled.
> > +
> > + etdm-in2-chn-disabled:
>
> Needs a vendor prefix.
>
> > + $ref: /schemas/types.yaml#/definitions/uint8-array
> > + maxItems: 16
> > + description: Specify which input channel should be disabled.
> > +
> > +patternProperties:
> > + "^etdm-in[1-2]-mclk-source$":
>
> And all these need a vendor prefix.
>
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm in mclk source clock.
> > + enum:
> > + - 0 # xtal_26m_ck
> > + - 1 # apll1_ck
> > + - 2 # apll2_ck
> > + - 3 # apll3_ck
> > + - 4 # apll4_ck
> > + - 5 # apll5_ck
> > + - 6 # hdmirx_apll_ck
> > +
> > + "^etdm-out[1-3]-mclk-source$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm out mclk source clock.
> > +
> > + "^etdm-in[1-2]-mclk-alwasys-on-rate$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm in mclk output rate for always on
> > case.
>
> Hz? If so, '-hz' unit suffix and drop the type ref.
>
Yes, it's Hz.
I will add unit suffix and drop the type.
> > +
> > + "^etdm-out[1-3]-mclk-alwasys-on-rate$":
>
> typo: alwasys
>
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm out mclk output rate for always on
> > case.
>
> Hz?
>
> > +
> > + "^etdm-in[1-2]-data-mode$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm in data mode.
> > + enum:
> > + - 0 # one pin (TDM)
> > + - 1 # multi pin (I2S)
>
> Can be boolean?
>
Yes, becasue only two options can be configured for data mode.
I will replace it with a bool property like "mediatek,etdm-in[1-2]-
multi-pin-mode".
> > +
> > + "^etdm-out[1-3]-data-mode$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: Specify etdm out data mode.
>
> Constraints on values?
>
> > +
> > + "^etdm-in[1-2]-cowork-source$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: |
> > + etdm modules can share the same external clock pin. Specify
> > + which etdm clock source is required by this etdm in moudule.
> > + enum:
> > + - 0 # etdm1_in
> > + - 1 # etdm2_in
> > + - 2 # etdm1_out
> > + - 3 # etdm2_out
> > + - 4 # etdm3_out
> > +
> > + "^etdm-out[1-3]-cowork-source$":
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description: |
> > + etdm modules can share the same external clock pin. Specify
> > + which etdm clock source is required by this etdm out
> > moudule.
>
> Constraints?
>
> > +
> > +required:
> > + - compatible
> > + - interrupts
> > + - mediatek,topckgen
> > + - power-domains
> > + - clocks
> > + - clock-names
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/mt8195-clk.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > + #include <dt-bindings/interrupt-controller/irq.h>
> > + #include <dt-bindings/power/mt8195-power.h>
> > +
> > + afe: mt8195-afe-pcm {
> > + compatible = "mediatek,mt8195-audio";
> > + interrupts = <GIC_SPI 822 IRQ_TYPE_LEVEL_HIGH 0>;
> > + mediatek,topckgen = <&topckgen>;
> > + power-domains = <&spm MT8195_POWER_DOMAIN_AUDIO>;
> > + clocks = <&clk26m>,
> > + <&audsys CLK_AUD_AFE>,
> > + <&infracfg_ao CLK_INFRA_AO_AUDIO>,
> > + <&infracfg_ao CLK_INFRA_AO_AUDIO_26M_B>;
> > + clock-names = "clk26m",
> > + "aud_afe",
> > + "infra_ao_audio",
> > + "infra_ao_audio_26m_b";
> > + };
> > +
> > +...
> > --
> > 2.18.0
> >
Thanks for your reviewing.
I will correct all problems on v3.
Thanks,
Trevor
> >
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