linux-kernel - Re: [PATCH 1/4] documentation: add palmas dts definition

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Thu, 28 Feb 2013 12:01:53 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Graeme Gregory <gg@...mlogic.co.uk>
CC:	Laxman Dewangan <ldewangan@...dia.com>,
	J Keerthy <j-keerthy@...com>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"rob@...dley.net" <rob@...dley.net>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"b-cousson@...com" <b-cousson@...com>
Subject: Re: [PATCH 1/4] documentation: add palmas dts definition

On 02/28/2013 03:57 AM, Graeme Gregory wrote:
...
> The final but of information that would be needed is some method to pass
> down product_id/design_rev and for a lot of the IP blocks they could be
> made independent of the actual parent.

That should probably be represented in DT itself as differing compatible
values.

I could see the argument that this is SW-probe-able since there's a
register that defines the value. However, any global ID register would
apply to the top-level device, and not the version of any child IP
blocks if there's the possibility of mixing/matching IP blocks. If
there's a dedicated version register for a child IP block, then
presumably it's already part of the child IP block's register space, and
so the driver can read it, and then there perhaps wouldn't be a need to
represent this using different compatible values.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/