linux-kernel - Re: [PATCH 09/10] arm64: tegra: Audio graph header for Tegra210

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Date:   20 Jul 2020 13:51:10 +0900
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Sameer Pujar <spujar@...dia.com>
Cc:     <broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>,
        <robh+dt@...nel.org>, <lgirdwood@...il.com>,
        <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <alsa-devel@...a-project.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <sharadg@...dia.com>,
        <mkumard@...dia.com>, <viswanathl@...dia.com>,
        <rlokhande@...dia.com>, <dramesh@...dia.com>,
        <atalambedu@...dia.com>, <nwartikar@...dia.com>,
        <swarren@...dia.com>, <nicoleotsuka@...il.com>
Subject: Re: [PATCH 09/10] arm64: tegra: Audio graph header for Tegra210


Hi Sameer

> >> +&tegra_admaif {
> >> +     admaif_port: port {
> >> +             admaif0: endpoint@0 {
> >> +                     remote-endpoint = <&xbar_admaif0>;
> >> +             };
> >> +             admaif1: endpoint@1 {
> >> +                     remote-endpoint = <&xbar_admaif1>;
> >> +             };
> > (snip)
> >> +             admaif8: endpoint@8 {
> >> +                     remote-endpoint = <&xbar_admaif8>;
> >> +             };
> >> +             admaif9: endpoint@9 {
> >> +                     remote-endpoint = <&xbar_admaif9>;
> >> +             };
> >> +     };
> >> +};
> > I'm not familiar with your system, so, one question.
> > Does this ADMAIF has total 10 interface which is used in the same time ?
> > or select one of 10 connections when use ?
> 
> One ore more ADMAIF interfaces can be used simultaneously. In fact all
> of them can be used at the same time.

Ah, sorry my questoin was not correct.
I want to clarify was that below.

In my understanding, 
if your system has 10 interfaces,
you need to create 10 ports, not 10 endpoints.
If your system has 1 interface, but is connected from 10
devices, it has 1 port 10 endpoints.

Thank you for your help !!

Best regards
---
Kuninori Morimoto