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| author | Gabor Juhos <juhosg@openwrt.org> | 2012-03-27 19:38:17 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2012-03-27 19:38:17 +0000 |
| commit | b77217d9638e50c95e322a1b188e2e9df7782853 (patch) | |
| tree | 8274ccf3844a3b37d673db566c8a6576216c5796 /target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch | |
| parent | 102c6df148ee4b5df368c32e282e31f37f26363f (diff) | |
| download | mtk-20170518-b77217d9638e50c95e322a1b188e2e9df7782853.zip mtk-20170518-b77217d9638e50c95e322a1b188e2e9df7782853.tar.gz mtk-20170518-b77217d9638e50c95e322a1b188e2e9df7782853.tar.bz2 | |
ar71xx: boost SPI flash read performance
mtd_speedtest results:
page read speed
old new delta
DB120 929 KiB/s 2597 KiB/s +179.55%
TL-WR1043ND v1 754 KiB/s 2166 KiB/s +187.27%
TL-WR703N v1 745 KiB/s 2176 KiB/s +192.08%
TL-MR3220 v1 752 KiB/s 2154 KiB/s +186.44%
TL-WR2543ND v1 564 KiB/s 2130 KiB/s +277.66%
TL-WR741ND v2 525 KiB/s 1767 KiB/s +236.57%
ALFA-AP96 702 KiB/s 1977 KiB/s +181.62%
WNDR3700 697 KiB/s 1965 KiB/s +181.92%
SVN-Revision: 31118
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch b/target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch new file mode 100644 index 0000000..48e69c0 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/462-mtd-m25p80-set-spi-transfer-type.patch @@ -0,0 +1,15 @@ +--- a/drivers/mtd/devices/m25p80.c ++++ b/drivers/mtd/devices/m25p80.c +@@ -372,10 +372,12 @@ static int m25p80_read(struct mtd_info * + * OPCODE_FAST_READ (if available) is faster. + * Should add 1 byte DUMMY_BYTE. + */ ++ t[0].type = SPI_TRANSFER_FLASH_READ_CMD; + t[0].tx_buf = flash->command; + t[0].len = m25p_cmdsz(flash) + FAST_READ_DUMMY_BYTE; + spi_message_add_tail(&t[0], &m); + ++ t[1].type = SPI_TRANSFER_FLASH_READ_DATA; + spi_message_add_tail(&t[1], &m); + + /* Byte count starts at zero. */ |