linux-kernel - Re: [PATCH 2/2] arm64: tegra: Audio codec support on Jetson AGX Orin

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Date:   Fri, 10 Feb 2023 14:32:07 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        thierry.reding@...il.com, jonathanh@...dia.com,
        oder_chiou@...ltek.com, broonie@...nel.org
Cc:     perex@...ex.cz, tiwai@...e.com, lgirdwood@...il.com,
        kuninori.morimoto.gx@...esas.com, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org
Subject: Re: [PATCH 2/2] arm64: tegra: Audio codec support on Jetson AGX Orin



On 10-02-2023 14:15, Krzysztof Kozlowski wrote:
> On 09/02/2023 15:36, Sameer Pujar wrote:
>> Jetson AGX Orin has onboard RT5640 audio codec. This patch adds the
>> codec device node and the bindings to I2S1 interface.
>>
>> Signed-off-by: Sameer Pujar <spujar@...dia.com>
>> ---
>>   .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts  | 47 +++++++++++++++++++++-
>>   1 file changed, 46 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> index 8a97478..5881fbf 100644
>> --- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> +++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> @@ -3,6 +3,7 @@
>>
>>   #include <dt-bindings/input/linux-event-codes.h>
>>   #include <dt-bindings/input/gpio-keys.h>
>> +#include <dt-bindings/sound/rt5640.h>
>>
>>   #include "tegra234-p3701-0000.dtsi"
>>   #include "tegra234-p3737-0000.dtsi"
>> @@ -49,7 +50,7 @@
>>
>>                                                        i2s1_dap: endpoint {
>>                                                                dai-format = "i2s";
>> -                                                             /* placeholder for external codec */
>> +                                                             remote-endpoint = <&rt5640_ep>;
>>                                                        };
>>                                                };
>>                                        };
>> @@ -2017,6 +2018,32 @@
>>                        status = "okay";
>>                };
>>
>> +             i2c@...0000 {
>> +                     status = "okay";
>> +

>> +                     audio-codec@1c {
>> +                             status = "okay";
> Are you sure you need this?
I can drop this in v2 as it would be the default state and it is not 
disabled anywhere else. Thanks.