linux-kernel - Re: [PATCH] arm64: dts: meson-sm1: add spdifin spdifout nodes

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Date:   Mon, 06 Sep 2021 11:25:32 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        christianshewitt@...il.com, art@...das.com, nick@...das.com,
        gouwa@...das.com, Artem Lapkin <email2tema@...il.com>
Subject: Re: [PATCH] arm64: dts: meson-sm1: add spdifin spdifout nodes


On Thu 02 Sep 2021 at 15:31, Neil Armstrong <narmstrong@...libre.com> wrote:

> Hi,
>
> On 11/08/2021 07:09, Artem Lapkin wrote:
>> Add spdifin spdifout spdifout_b nodes for Amlogic SM1 SoCs.
>> 
>> Signed-off-by: Artem Lapkin <art@...das.com>
>> ---
>>  arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 40 ++++++++++++++++++++++
>>  1 file changed, 40 insertions(+)
>> 
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
>> index 3d8b1f4f2..1efdbb61e 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
>> @@ -356,6 +356,33 @@ tdmin_lb: audio-controller@3c0 {
>>  			status = "disabled";
>>  		};
>>  
>> +		spdifin: audio-controller@400 {
>> +			compatible = "amlogic,g12a-spdifin",
>> +			"amlogic,axg-spdifin";
>> +			reg = <0x0 0x400 0x0 0x30>;
>> +			#sound-dai-cells = <0>;
>> +			sound-name-prefix = "SPDIFIN";
>> +			interrupts = <GIC_SPI 151 IRQ_TYPE_EDGE_RISING>;
>> +			clocks = <&clkc_audio AUD_CLKID_SPDIFIN>,
>> +			<&clkc_audio AUD_CLKID_SPDIFIN_CLK>;
>> +			clock-names = "pclk", "refclk";
>> +			resets = <&clkc_audio AUD_RESET_SPDIFIN>;
>> +			status = "disabled";
>> +		};
>> +
>> +		spdifout: audio-controller@480 {
>> +			compatible = "amlogic,g12a-spdifout",
>> +			"amlogic,axg-spdifout";
>> +			reg = <0x0 0x480 0x0 0x50>;
>> +			#sound-dai-cells = <0>;
>> +			sound-name-prefix = "SPDIFOUT";
>> +			clocks = <&clkc_audio AUD_CLKID_SPDIFOUT>,
>> +			<&clkc_audio AUD_CLKID_SPDIFOUT_CLK>;
>> +			clock-names = "pclk", "mclk";
>> +			resets = <&clkc_audio AUD_RESET_SPDIFOUT>;
>> +			status = "disabled";
>> +		};
>> +
>>  		tdmout_a: audio-controller@500 {
>>  			compatible = "amlogic,sm1-tdmout";
>>  			reg = <0x0 0x500 0x0 0x40>;
>> @@ -401,6 +428,19 @@ tdmout_c: audio-controller@580 {
>>  			status = "disabled";
>>  		};
>>  
>> +		spdifout_b: audio-controller@680 {
>> +			compatible = "amlogic,g12a-spdifout",
>> +			"amlogic,axg-spdifout";
>> +			reg = <0x0 0x680 0x0 0x50>;
>> +			#sound-dai-cells = <0>;
>> +			sound-name-prefix = "SPDIFOUT_B";
>> +			clocks = <&clkc_audio AUD_CLKID_SPDIFOUT_B>,
>> +			<&clkc_audio AUD_CLKID_SPDIFOUT_B_CLK>;
>> +			clock-names = "pclk", "mclk";
>> +			resets = <&clkc_audio AUD_RESET_SPDIFOUT_B>;
>> +			status = "disabled";
>> +		};
>> +
>>  		toacodec: audio-controller@740 {
>>  			compatible = "amlogic,sm1-toacodec",
>>  				     "amlogic,g12a-toacodec";
>> 
>
> Jerome could you quickly review this ?
>

Just this, without the related card change is not usefull as it won't be
part of the card.

It would be nice to indicate how it was tested ?

AFAIK:
- spdifout b can only be routed to hdmi and dw-hdmi driver does not
  support that yet
- the VIM3 does not have connectors for the spdif (in or out). If it
  requires some extension card, it should be noted somewhere, at least


> Thanks,
> Neil