Openwrt/target/linux
Adrian Schmutzler 30cc7f3510 ramips: increase SPI frequency for ASUS RT-AC51U/RT-AC54U
This increases the SPI frequency for both ASUS RT-AC51U and RT-AC54U.

Speed comparison tests have been performed on RT-AC54U:

- 10Mhz
root@OpenWrt:~# time cat /dev/mtd* > /dev/null
real    4m 37.78s
user    0m 0.02s
sys     2m 43.92s

- 50Mhz
root@OpenWrt:~# time cat /dev/mtd* > /dev/null
real    1m 28.34s
user    0m 0.03s
sys     0m 46.96s

- 50Mhz fast read
root@OpenWrt:~# time cat /dev/mtd* > /dev/null
real    1m 11.94s
user    0m 0.01s
sys     0m 46.94s

- 80Mhz
root@OpenWrt:~# time cat /dev/mtd* > /dev/null
real    1m 12.31s
user    0m 0.04s
sys     0m 46.96s

- 80Mhz fast read
root@OpenWrt:~# time cat /dev/mtd* > /dev/null
real    1m 12.15s
user    0m 0.02s
sys     0m 46.97s

Based on that, we took 50 MHz with fast-read, as higher frequencies
didn't yield further improvements.

For the RT-AC51U, only the final configuration was tested.

Tested-by: Zhijun You <hujy652@gmail.com> [RT-AC54U]
Tested-by: Davide Fioravanti <pantanastyle@gmail.com> [RT-AC51U]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-05-18 11:38:22 +02:00
..
apm821xx
ar71xx ar71xx: mikrotik: mach-rbspi.c remove wlan id 2020-05-12 12:41:12 +02:00
arc770
archs38
armvirt
at91
ath25
ath79 ath79: add support for Ubiquiti PowerBeam 5AC 500 2020-05-17 21:03:30 +02:00
bcm27xx bcm27xx: drop outdated kernel version switches from patches-5.4 2020-05-17 18:36:10 +02:00
bcm47xx kernel: bump 4.19 to 4.19.122 2020-05-12 12:36:28 +02:00
bcm53xx
bcm63xx bcm63xx: mask interrupts on init 2020-05-17 23:29:48 +02:00
cns3xxx
gemini
generic generic: drop outdated kernel version switches in local drivers 2020-05-17 18:35:59 +02:00
imx6
ipq40xx ipq40xx: replace "ok" with "okay" for status in DTS files 2020-05-12 19:16:41 +02:00
ipq806x
ipq807x
kirkwood
lantiq lantiq: drop outdated kernel version switches from patches-5.4 2020-05-17 18:36:21 +02:00
layerscape kernel: bump 5.4 to 5.4.40 2020-05-12 12:36:28 +02:00
malta
mediatek
mpc85xx
mvebu
mxs
octeon
octeontx
omap
oxnas
pistachio
ramips ramips: increase SPI frequency for ASUS RT-AC51U/RT-AC54U 2020-05-18 11:38:22 +02:00
rb532
rockchip
samsung
sunxi
tegra
uml
x86
zynq
Makefile