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| author | Gabor Juhos <juhosg@openwrt.org> | 2012-03-27 19:38:15 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2012-03-27 19:38:15 +0000 |
| commit | 102c6df148ee4b5df368c32e282e31f37f26363f (patch) | |
| tree | fa1fbd3a2773421c8b15b9d15b3c1721b6e025a1 /target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch | |
| parent | 6455178a6a66c36a916e4ba6bdffe18846e637b5 (diff) | |
| download | mtk-20170518-102c6df148ee4b5df368c32e282e31f37f26363f.zip mtk-20170518-102c6df148ee4b5df368c32e282e31f37f26363f.tar.gz mtk-20170518-102c6df148ee4b5df368c32e282e31f37f26363f.tar.bz2 | |
ar71xx: improve SPI flash read/write performance
mtd_speedtest results:
page write speed
old new delta
DB120 209 KiB/s 226 KiB/s +8.13%
TL-WR1043ND v1 122 KiB/s 148 KiB/s +21.31%
TL-WR703N v1 153 KiB/s 194 KiB/s +26.80%
TL-MR3220 v1 130 KiB/s 156 KiB/s +20.00%
TL-WR2543ND v1 158 KiB/s 202 KiB/s +27.85%
TL-WR741ND v2 122 KiB/s 152 KiB/s +24.59%
ALFA AP96 229 KiB/s 260 KiB/s +13.54%
WNDR3700 202 KiB/s 223 KiB/s +10.40%
page read speed
old new delta
DB120 691 KiB/s 929 KiB/s +34.44%
TL-WR1043ND v1 372 KiB/s 754 KiB/s +102.69%
TL-WR703N v1 375 KiB/s 745 KiB/s +98.67%
TL-MR3220 v1 372 KiB/s 752 KiB/s +102.15%
TL-WR2543ND v1 307 KiB/s 564 KiB/s +83.71%
TL-WR741ND v2 315 KiB/s 525 KiB/s +66.67%
ALFA AP96 515 KiB/s 702 KiB/s +36.31%
WNDR3700 515 KiB/s 697 KiB/s +35.34%
SVN-Revision: 31117
Diffstat (limited to 'target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch b/target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch index 0b36ab6..08a76f5 100644 --- a/target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch +++ b/target/linux/ar71xx/patches-3.2/202-spi-ath79-add-missing-HIGH-LOW-SCK-transition.patch @@ -1,20 +1,21 @@ -From 0ad8cbbb978bc01de08eadd3357ea188302b83ce Mon Sep 17 00:00:00 2001 +From ea7e40aedae58b7a0f0ccd8658063de499734874 Mon Sep 17 00:00:00 2001 From: Gabor Juhos <juhosg@openwrt.org> Date: Wed, 11 Jan 2012 20:33:41 +0100 Subject: [PATCH 2/7] spi/ath79: add missing HIGH->LOW SCK transition Signed-off-by: Gabor Juhos <juhosg@openwrt.org> --- - drivers/spi/spi-ath79.c | 1 + - 1 files changed, 1 insertions(+), 0 deletions(-) + drivers/spi/spi-ath79.c | 2 ++ + 1 files changed, 2 insertions(+), 0 deletions(-) --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c -@@ -193,6 +193,7 @@ static u32 ath79_spi_txrx_mode0(struct s - ath79_spi_delay(nsecs); +@@ -200,6 +200,8 @@ static u32 ath79_spi_txrx_mode0(struct s + ath79_spi_delay(sp, nsecs); ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out | AR71XX_SPI_IOC_CLK); - ath79_spi_delay(nsecs); -+ ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out); + ath79_spi_delay(sp, nsecs); ++ if (bits == 1) ++ ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out); word <<= 1; } |