linux-kernel - Re: [PATCH v2 05/10] media: adv748x: add support for HDMI audio

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Date:   Fri, 20 Mar 2020 09:57:48 +0100
From:   Alex Riesen <alexander.riesen@...itec.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
CC:     Kieran Bingham <kieran.bingham@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        "Laurent Pinchart" <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        driverdevel <devel@...verdev.osuosl.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        Device Tree Mailing List <devicetree@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v2 05/10] media: adv748x: add support for HDMI audio

Hi Geert,

Geert Uytterhoeven, Fri, Mar 20, 2020 09:43:29 +0100:
> CC linux-clk for the clock provider.

Thanks!

> > +int adv748x_dai_init(struct adv748x_dai *dai)
> > +{
> > +       int ret;
> > +       struct adv748x_state *state = adv748x_dai_to_state(dai);
> > +
> > +       dai->mclk = clk_register_fixed_rate(state->dev,
> > +                                           "adv748x-hdmi-i2s-mclk",
> 
> I assume there can be multiple adv748x instances in the system?
> Hence the clock name should be unique for each instance.

I think that can happen.

Is it alright to derive the clock name from the device name? E.g.:
adv748x.4-0070-mclk? Where "adv748x.4-0070" is a struct device->name.

Regards,
Alex