From: Graham Moore <grmoore@opensource.altera.com>
To: bpqw <bpqw@micron.com>
Cc: Marek Vasut <marex@denx.de>,
"geert+renesas@glider.be" <geert+renesas@glider.be>,
"shijie8@gmail.com" <shijie8@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
Graham Moore <grmoore@opensource.altera.com>
Subject: RE: [V5 PATCH 1/1] driver:mtd:spi-nor: Add quad I/O support for Micron spi nor
Date: Thu, 13 Nov 2014 10:26:39 -0600 [thread overview]
Message-ID: <alpine.DEB.2.02.1411130945300.19890@lava-test-server> (raw)
In-Reply-To: <A765B125120D1346A63912DDE6D8B6315EB0DA@NTXXIAMBX02.xacn.micron.com>
On Wed, 12 Nov 2014, bpqw wrote:
> This maybe your spi controller is still extended mode,
> Once EVCR bit 7 is set to 0, the spi nor device will operate in quad I/O.Command-address-data line is 4-x-4.
> So after send WRITE EVCR command , spi controller also must transfer to quad I/O Mode,and set its Command-address-data line also
> Should be 4-x-4 .
Thanks, this helped. I added some code to snoop the command stream for
WRITE EVCR with quad mode, and then set up the quad mode in the
controller. Seems kinda ugly, but working now.
-Graham
next prev parent reply other threads:[~2014-11-13 16:29 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 6:20 [PATCH 1/1] driver:mtd:spi-nor: Add Micron quad I/O support bpqw
2014-09-25 10:11 ` Marek Vasut
2014-09-26 8:39 ` bpqw
2014-09-26 8:46 ` Marek Vasut
2014-09-28 1:59 ` [PATCH 1/1 v2] " bpqw
2014-09-28 22:43 ` Marek Vasut
2014-09-29 0:30 ` bpqw
2014-09-29 18:57 ` Marek Vasut
2014-09-30 2:47 ` [PATCH 1/1 v3] " Bean Huo 霍斌斌 (beanhuo)
2014-09-30 13:38 ` Marek Vasut
2014-10-01 14:24 ` Bean Huo 霍斌斌 (beanhuo)
2014-10-01 14:32 ` Marek Vasut
2014-10-01 14:28 ` bpqw
2014-10-01 14:33 ` Marek Vasut
2014-10-04 5:55 ` bpqw
2014-10-16 1:53 ` bpqw
2014-10-17 0:37 ` Bean Huo 霍斌斌 (beanhuo)
2014-10-20 1:24 ` bpqw
2014-10-23 0:58 ` Bean Huo 霍斌斌 (beanhuo)
2014-10-24 0:31 ` Bean Huo 霍斌斌 (beanhuo)
2014-10-27 0:09 ` [PATCH 1/1 v3] driver:mtd:spi-nor: Add quad I/O support for Micron spi nor bpqw
2014-10-30 14:31 ` bpqw
2014-11-12 20:59 ` Jagan Teki
2014-11-04 13:25 ` [PATCH 1/1 v4] " bpqw
2014-11-05 11:26 ` Brian Norris
2014-11-06 2:56 ` bpqw
2014-11-06 3:09 ` [V5 PATCH 1/1] " bpqw
[not found] ` <54613259.4070903@opensource.altera.com>
2014-11-11 19:41 ` Graham Moore
2014-11-11 21:55 ` Jagan Teki
2014-11-12 1:19 ` bpqw
2014-11-12 0:58 ` bpqw
2014-11-13 16:26 ` Graham Moore [this message]
2014-11-14 2:06 ` bpqw
2014-11-26 4:06 ` Brian Norris
2014-11-26 16:08 ` bpqw
2014-11-26 21:12 ` Brian Norris
2014-11-27 5:55 ` bpqw
2014-11-27 9:14 ` Brian Norris
2014-11-30 16:11 ` Bean Huo 霍斌斌 (beanhuo)
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