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Message-Id: <20130702152954.f25bbf51c1a79aa4437e22ee@canb.auug.org.au>
Date: Tue, 2 Jul 2013 15:29:54 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
<linux-arm-kernel@...ts.infradead.org>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
Mark Jackson <mpfj-list@...flow.co.uk>,
Tony Lindgren <tony@...mide.com>, Pekon Gupta <pekon@...com>,
Artem Bityutskiy <dedekind1@...il.com>
Subject: linux-next: manual merge of the arm-soc tree with the l2-mtd tree
Hi all,
Today's linux-next merge of the arm-soc tree got a conflict in
Documentation/devicetree/bindings/mtd/gpmc-nand.txt between commits
6c88058ef927 ("ARM: OMAP2+: cleaned-up DT support of various ECC
schemes") and 212012138deb ("mtd: nand: omap2: updated support for BCH4
ECC scheme") from the l2-mtd tree and commit 496c8a0bbb72 ("ARM: OMAP2+:
Allow NAND transfer mode to be specified in DT") from the arm-soc tree.
I fixed it up (maybe - see below) and can carry the fix as necessary (no
action is required).
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc Documentation/devicetree/bindings/mtd/gpmc-nand.txt
index b3f23df,df338cb..0000000
--- a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt
@@@ -17,59 -17,27 +17,66 @@@ Required properties
Optional properties:
- - nand-bus-width: Set this numeric value to 16 if the hardware
- is wired that way. If not specified, a bus
- width of 8 is assumed.
+ - nand-bus-width: Determines data-width of the connected device
+ x16 = "16"
+ x8 = "8" (default)
- - ti,nand-ecc-opt: A string setting the ECC layout to use. One of:
- "sw" Software method (default)
- "hw" Hardware method
- "hw-romcode" gpmc hamming mode method & romcode layout
- "bch4" 4-bit BCH ecc code
- "bch8" 8-bit BCH ecc code
+ - ti,nand-ecc-opt: Determines the ECC scheme used by driver.
+ It can be any of the following strings:
+
+ "hamming_code_sw" 1-bit Hamming ECC
+ - ECC calculation in software
+ - Error detection in software
+ - ECC layout compatible with S/W scheme
+
+ "hamming_code_hw" 1-bit Hamming ECC
+ - ECC calculation in hardware
+ - Error detection in software
+ - ECC layout compatible with S/W scheme
+
+ "hamming_code_hw_romcode" 1-bit Hamming ECC
+ - ECC calculation in hardware
+ - Error detection in software
+ - ECC layout compatible with ROM code
+
+ "bch4_code_hw_detection_sw" 4-bit BCH ECC
+ - ECC calculation in hardware
+ - Error detection in software
+ - ECC layout compatible with S/W scheme
+ * depends on CONFIG_MTD_NAND_ECC_BCH
+
+ "bch4_code_hw" 4-bit BCH ECC
+ - ECC calculation in hardware
+ - Error detection in hardware
+ - ECC layout compatible with ROM code
+ * depends on CONFIG_MTD_NAND_OMAP_BCH
+ * requires <elm_id> to be specified
+
+ "bch8_code_hw_detection_sw" 8-bit BCH ECC
+ - ECC calculation in hardware
+ - Error detection in software
+ - ECC layout compatible with S/W scheme
+ * depends on CONFIG_MTD_NAND_ECC_BCH
+
+ "bch8_code_hw" 8-bit BCH ECC
+ - ECC calculation in hardware
+ - Error detection in hardware
+ - ECC layout compatible with ROM code
+ * depends on CONFIG_MTD_NAND_OMAP_BCH
+ * requires <elm_id> to be specified
+ - ti,nand-xfer-type: A string setting the data transfer type. One of:
+
+ "prefetch-polled" Prefetch polled mode (default)
+ "polled" Polled mode, without prefetch
+ "prefetch-dma" Prefetch enabled sDMA mode
+ "prefetch-irq" Prefetch enabled irq mode
+
- - elm_id: Specifies elm device node. This is required to support BCH
- error correction using ELM module.
+
+ - elm_id: Specifies elm device node. This is required to
+ support some BCH ECC schemes mentioned above.
+
For inline partiton table parsing (optional):
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