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- From: =?UTF-8?q?Ezequiel=20Garc=C3=ADa?= <ezequiel@vanguardiasur.com.ar>
- Date: Wed, 4 Nov 2015 13:13:41 -0300
- Subject: [PATCH] mtd: pxa3xx_nand: Increase the initial chunk size
- The chunk size represents the size of the data chunks, which
- is used by the controllers that allow to split transfered data.
- However, the initial chunk size is used in a non-splitted way,
- during device identification. Therefore, it must be large enough
- for all the NAND commands issued during device identification.
- This includes NAND_CMD_PARAM which was recently changed to
- transfer up to 2048 bytes (for the redundant parameter pages).
- Thus, the initial chunk size should be 2048 as well.
- On Armada 370/XP platforms (NFCv2) booted without the keep-config
- devicetree property, this commit fixes a timeout on the NAND_CMD_PARAM
- command:
- [..]
- pxa3xx-nand f10d0000.nand: This platform can't do DMA on this device
- pxa3xx-nand f10d0000.nand: Wait time out!!!
- nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x38
- nand: Micron MT29F8G08ABABAWP
- nand: 1024 MiB, SLC, erase size: 512 KiB, page size: 4096, OOB size: 224
- Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
- Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
- Signed-off-by: Brian Norris <computersforpeace@gmail.com>
- ---
- --- a/drivers/mtd/nand/pxa3xx_nand.c
- +++ b/drivers/mtd/nand/pxa3xx_nand.c
- @@ -1637,7 +1637,7 @@ static int pxa3xx_nand_scan(struct mtd_i
- goto KEEP_CONFIG;
-
- /* Set a default chunk size */
- - info->chunk_size = 512;
- + info->chunk_size = PAGE_CHUNK_SIZE;
-
- ret = pxa3xx_nand_config_flash(info);
- if (ret)
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