netdev - Re: [PATCH/RFC net-next] ravb: Avoid unsupported internal delay mode for R-Car E3/D3

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Message-ID: <20190408090104.GB1615@kunai>
Date:   Mon, 8 Apr 2019 11:01:04 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Simon Horman <horms+renesas@...ge.net.au>
Cc:     netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Magnus Damm <magnus.damm@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: Re: [PATCH/RFC net-next] ravb: Avoid unsupported internal delay mode
 for R-Car E3/D3

On Mon, Apr 08, 2019 at 10:29:28AM +0200, Simon Horman wrote:
> According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of
> August 24, 2018, the TX clock internal delay mode isn't supported
> on R-Car E3 (r8a77990) and D3 (r8a77995).

Yes, it made it also into the revised documentation v1.50, see chapter
50.2.7., bit 14.

> +static const struct soc_device_attribute ravb_delay_mode_quirk_match[] = {
> +	{ .soc_id = "r8a77990", .revision = "ES1.*" },
> +	{ .soc_id = "r8a77995", .revision = "ES1.*" },
> +	{ /* sentinel */ }
> +};

I might have missed it but is there a plan to fix this in later
revisions of D3/E3? I was under the impression that it is not and then
we could base it on compatible rather than soc_device_match?


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