linux-kernel - RE: [PATCHv2 RESEND] i2c: designware-pci: set ideal HCNT, LCNT and SDA hold time value

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:	Tue, 11 Mar 2014 03:39:22 +0000
From:	"Chew, Chiau Ee" <chiau.ee.chew@...el.com>
To:	Wolfram Sang <wsa@...-dreams.de>
CC:	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	"Lim, Lee Booi" <lee.booi.lim@...el.com>,
	"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCHv2 RESEND] i2c: designware-pci: set ideal HCNT, LCNT and
 SDA hold time value


> Subject: [PATCHv2 RESEND] i2c: designware-pci: set ideal HCNT, LCNT and SDA
> hold time value
> 
> From: Chew, Chiau Ee <chiau.ee.chew@...el.com>
> 
> On Intel BayTrail, there was case whereby the resulting fast mode bus speed
> becomes slower (~20% slower compared to expected speed) if using the
> HCNT/LCNT calculated in the core layer. Thus, this patch is added to allow pci
> glue layer to pass in optimal HCNT/LCNT/SDA hold time values to core layer
> since the core layer supports cofigurable HCNT/LCNT/SDA hold time values
> now.
> 
> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@...el.com>
> ---
> v2 changelog:
> * Add 'dw_' prefix to struct scl_sda_cfg
> * Add Baytrail HCNT/LCNT/SDA hold time values directly in the
>   struct instead of using macro definition
> * Replace tab before "=" with space in struct
> 
>  drivers/i2c/busses/i2c-designware-pcidrv.c |   28
> ++++++++++++++++++++++++++++
>  1 files changed, 28 insertions(+), 0 deletions(-)
> 

I have misplaced the changelog in the previous v2 patch which would cause the removal of signed-off-by line. I'm resending this to fix that problem. Sorry for any confusion and inconvenience caused.


--
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/