linux-kernel - Re: [PATCH v5 15/15] scsi: ufs-qcom: set PA_Local_TX_LCC

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Message-ID: <56D54BC2.70902@suse.de>
Date:	Tue, 1 Mar 2016 15:58:58 +0800
From:	Hannes Reinecke <hare@...e.de>
To:	Yaniv Gardi <ygardi@...eaurora.org>,
	James.Bottomley@...senPartnership.com
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, santoshsy@...il.com,
	linux-scsi-owner@...r.kernel.org,
	Vinayak Holikatti <vinholikatti@...il.com>,
	"James E.J. Bottomley" <JBottomley@...n.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH v5 15/15] scsi: ufs-qcom: set PA_Local_TX_LCC_Enable
 before link startup

On 02/28/2016 09:32 PM, Yaniv Gardi wrote:
> Some UFS devices (and may be host) have issues if LCC is
> enabled. So we are setting PA_Local_TX_LCC_Enable to 0
> before link startup which will make sure that both host
> and device TX LCC are disabled once link startup is
> completed.
> 
> This change also:
> - enables the device ref clock before changing to HS mode
>   and disables it if entered to PWM mode
> - adds printouts of testbus debug registers
> 
Please make that in two patches; these issues are unrelated and will
just confuse users if one ever need to dig through the git log.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@...e.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)