From: ivo.clarysse@gmail.com (Ivo Clarysse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/2] ARM: MXC: mxc_nand: support i.MX21
Date: Thu, 8 Apr 2010 16:13:27 +0200 [thread overview]
Message-ID: <o2qba216b431004080713n9a264511qc4066544cdac10aa@mail.gmail.com> (raw)
In-Reply-To: <20100408133303.GK3688@pengutronix.de>
Allow mxc_nand.c to function on i.MX21 SoCs, since:
1) On i.MX21, if the NFC_INT_MASK bit in NFC_CONFIG1 is set, the NFC_INT
bit of NFC_CONFIG2 always reads out zero, even if an operation is
completed.
2) On i.MX21, sending a RESET command to the NAND flash controller does
not trigger an interrupt, nor does it cause the NFC_INT bit of
NFC_CONFIG2 to get set.
3) After reset is performed, NFC registers are again in their
default values.
This patch series:
- (Re-)sets all NFC registers after reset
- Uses enable_irq / disable_irq_nosync instead of NFC_INT_MASK
to mask NFC interrupts (allowing NFC_CONFIG2:NFC_INT to used on i.MX21)
next prev parent reply other threads:[~2010-04-08 14:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-06 13:52 [PATCH] ARM: MXC: mxc_nand: support i.MX21 Ivo Clarysse
2010-04-07 13:40 ` Sascha Hauer
2010-04-08 12:20 ` [PATCH v2] " Ivo Clarysse
2010-04-08 13:33 ` Sascha Hauer
2010-04-08 14:13 ` Ivo Clarysse [this message]
2010-04-27 7:29 ` [PATCH v3 0/2] " Artem Bityutskiy
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