diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-03-27 19:38:17 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-03-27 19:38:17 +0000 |
| commit | 7bc411c5d9e3bc59806b90954731ce94d96e820e (patch) | |
| tree | b1e88176d38705944d4e9b3e1205dfc14463e811 /target/linux/ar71xx/patches-3.2/462-mtd-m25p80-set-spi-transfer-type.patch | |
| parent | ac19ad9ae47b97d9e0cd9d7775cbb3589c5602bf (diff) | |
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%
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31118 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/patches-3.2/462-mtd-m25p80-set-spi-transfer-type.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.2/462-mtd-m25p80-set-spi-transfer-type.patch | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.2/462-mtd-m25p80-set-spi-transfer-type.patch b/target/linux/ar71xx/patches-3.2/462-mtd-m25p80-set-spi-transfer-type.patch new file mode 100644 index 000000000..48e69c0d6 --- /dev/null +++ b/target/linux/ar71xx/patches-3.2/462-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. */ |