mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
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599391c231
This change will enable page_scope_read & multipage_read support for QPIC. QPIC version 2.0 onwards , QPIC support page_scope_read & multipage_read command to enhance the read performance. In normal page read command SW is needed to write EXEC_CMD register for each Code word and collect any Status related to that CW before issueing EXEC_CMD for next CW. For page_scope read command SW is required to issue EXEC_CMD only once for a page. Controller HW takes care of Codeword specific details and automatically returns status associated with each CW to BAM pipe, dedicated for status deposition. enabling all bits in NAND_AUTO_STATUS_EN will require 4 data descriptors of 24 bytes each. This will publish all NANDc status registers in system memory. For multipage_read command SW is required to issue EXEC_CMD only once for all the pages which configured in QPIC_NAND_MULTI_PAGE_CMD register. All interrupts will be operational and valid in these modes. To check the status for each codeword, it is not possible to access the status registers while the read command is operational in page_scope & multi_page read modes. Hence, another feature to publish the status data (for all NAND status registers) by programming the NAND_AUTO_STATUS_EN register. For serial NAND: Read command for page_scope_read = 0x78800032 (QPIC_NAND_FLASH_CMD) Read command for multi_page_read = 0x78400032 (QPIC_NAND_FLASH_CMD) For Parallel NAND: Read command for page_scope_read = 0x00800032 (QPIC_NAND_FLASH_CMD) Read command for multi_page_read = 0x00400032 (QPIC_NAND_FLASH_CMD) Now we fixed maximum data bytes read in one go 128KiB(2KiB page), 256KiB (4KiB page), 512 KiB (8kiB page), because from upper layer we are getting more than 128KiB data bytes request in one go. if so just changing the value of "MAX_MULTI_PAGE" macro will increase the maximum data bytes in one go. Change-Id: I48eea51ff8f5f79f3490d8a538c295ecc3eeee19 Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org> |
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| .. | ||
| nand | ||
| onenand | ||
| spi | ||
| ubi | ||
| altera_qspi.c | ||
| at45.c | ||
| cfi_flash.c | ||
| cfi_mtd.c | ||
| dataflash.c | ||
| ftsmc020.c | ||
| ipq_spi_flash.c | ||
| jedec_flash.c | ||
| Kconfig | ||
| Makefile | ||
| mtd-uclass.c | ||
| mtd_uboot.c | ||
| mtdconcat.c | ||
| mtdcore.c | ||
| mtdcore.h | ||
| mtdpart.c | ||
| mw_eeprom.c | ||
| st_smi.c | ||