linux-kernel - Re: [PATCH] drm/pl111: Register the clock divider and use it.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 26 Apr 2017 10:01:33 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     "open list\:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Tom Cooksey <tom.cooksey@....com>,
        Russell King <linux@...linux.org.uk>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/pl111: Register the clock divider and use it.

Linus Walleij <linus.walleij@...aro.org> writes:

> On Mon, Apr 24, 2017 at 9:45 PM, Eric Anholt <eric@...olt.net> wrote:
>
>> This is required for the panel to work on bcm911360, where CLCDCLK is
>> the fixed 200Mhz AXI41 clock.  The rate set is still passed up to the
>> CLCDCLK, for platforms that have a settable rate on that one.
>>
>> Signed-off-by: Eric Anholt <eric@...olt.net>
>
> I like this, it is pretty.

An aside, for anyone else considering common clk and thinking "this is a
bit more complicated than I need": It's really nice for platform
debugging to have your divider or mux or whatever show up in
/debug/clk/clk_summary.  I don't know how many times I've been saved by
diffing that file between a good and bad state of my platform.

Download attachment "signature.asc" of type "application/pgp-signature" (833 bytes)