From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Shawn Lin <shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Cc: Vinod Koul <vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>,
Jaroslav Kysela <perex-/Fr2/VpizcU@public.gmane.org>,
Takashi Iwai <tiwai-IBi9RG/b67k@public.gmane.org>,
Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Olof Johansson <olofj-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Sonny Rao <sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Addy Ke <addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>
Subject: Re: [PATCH v3 8/9] spi: rockchip: modify DMA max burst to 1
Date: Thu, 3 Sep 2015 13:54:29 +0100 [thread overview]
Message-ID: <20150903125429.GA12027@sirena.org.uk> (raw)
In-Reply-To: <1441101524-1700-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 583 bytes --]
On Tue, Sep 01, 2015 at 05:58:44PM +0800, Shawn Lin wrote:
> Generic dma controller on Rockchips' platform cannot support
> DMAFLUSHP instruction which make dma to flush the req of non-aligned
> or non-multiple of what we need. That will cause an unrecoverable
> dma bus error. The saftest way is to set dma max burst to 1.
If this is a quirk of the DMA controller why is it being fixed with a
property specific to the SPI controller? Can't the DMA controller just
override the burst size?
> +#define ROCKCHIP_SPI_BORKEN_BURST_LEN (1<<0) /* broken burst len*/
This is misspelt.
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 473 bytes --]
next prev parent reply other threads:[~2015-09-03 12:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-01 9:56 [PATCH v3 0/9] Fix broken DMAFLUSHP on Rockchips platform Shawn Lin
[not found] ` <1441101381-1329-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-09-01 9:56 ` [PATCH v3 1/9] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit Shawn Lin
2015-09-01 9:57 ` [PATCH v3 3/9] Documentation: spi-rockchip: add description of rockchip,spi-broken-burst-len Shawn Lin
2015-09-01 9:59 ` [PATCH v3 9/9] ASoC: rockchip_i2s: modify DMA max burst to 1 Shawn Lin
2015-09-01 9:57 ` [PATCH v3 2/9] Documentation: arm-pl330: add description of arm,pl330-broken-no-flushp Shawn Lin
2015-09-01 9:57 ` [PATCH v3 4/9] Documentation: rockchip-i2s: add description of rockchip,i2s-broken-burst-len Shawn Lin
2015-09-01 9:57 ` [PATCH v3 5/9] DMA: pl330: add quirk for broken no flushp Shawn Lin
2015-09-01 9:57 ` [PATCH v3 6/9] ARM: dts: Add arm,pl330-broken-no-flushp quirk for rk3288 platform Shawn Lin
2015-09-01 9:58 ` [PATCH v3 7/9] ARM: dts: Add arm,pl330-broken-no-flushp quirk for rk3xxx platform Shawn Lin
2015-09-01 9:58 ` [PATCH v3 8/9] spi: rockchip: modify DMA max burst to 1 Shawn Lin
[not found] ` <1441101524-1700-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-09-03 12:54 ` Mark Brown [this message]
[not found] ` <20150903125429.GA12027-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-09-03 13:41 ` Shawn Lin
[not found] ` <55E84E17.2090409-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-09-03 17:45 ` Mark Brown
2015-09-04 0:03 ` Shawn Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150903125429.GA12027@sirena.org.uk \
--to=broonie-dgejt+ai2ygdnm+yrofe0a@public.gmane.org \
--cc=addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org \
--cc=alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org \
--cc=dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org \
--cc=dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org \
--cc=olofj-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=perex-/Fr2/VpizcU@public.gmane.org \
--cc=shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org \
--cc=sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org \
--cc=tiwai-IBi9RG/b67k@public.gmane.org \
--cc=vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).