From: Tejun Heo <tj@kernel.org>
To: Yuantian.Tang@freescale.com
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] ahci: qoriq: Update the default Rx watermark value
Date: Wed, 16 Dec 2015 10:25:19 -0500 [thread overview]
Message-ID: <20151216152519.GF4026@mtj.duckdns.org> (raw)
In-Reply-To: <1450244630-10065-2-git-send-email-Yuantian.Tang@freescale.com>
On Wed, Dec 16, 2015 at 01:43:50PM +0800, Yuantian.Tang@freescale.com wrote:
> From: Tang Yuantian <Yuantian.Tang@freescale.com>
>
> The PTC[RXWM] sets the watermark value for Rx FIFO. The default
> value 0x20 might be insufficient for some hard drives. If the
> watermark value is too small, a single-cycle overflow may occur
> and is reported as a CRC or internal error in the PxSERR register.
> Updated the value to 0x29 according to the validation test.
> All LS platforms are affected.
>
> Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Applied 1-2 to libata/for-4.5.
Thanks.
--
tejun
prev parent reply other threads:[~2015-12-16 15:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-16 5:43 [PATCH 1/2] ahci: qoriq: Adjust the default register values on ls1043a Yuantian.Tang
2015-12-16 5:43 ` [PATCH 2/2] ahci: qoriq: Update the default Rx watermark value Yuantian.Tang
2015-12-16 15:25 ` Tejun Heo [this message]
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