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0cc30cbdc7
openwrt/target/linux
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Aleksander Jan Bajkowski 0cc30cbdc7 ath79: increase spi frequency on TL-WDR3500/3600/4300/4310 
SPI Flash chip supports up to 33 MHz wihout fast read opcode.
Available frequencies are 112.5, 56.25, 37.5, 28.125, 22.5 etc.
This patch increases the nominal maximum frequency to 33 MHz,
reaching an effective increase from 22.5 to 28.125 MHz.

Formula to calculate SPI frequency:
Freq = 225 MHz / 2 / div

Before:

$ time dd if=/dev/mtd1 of=/dev/null bs=8M
0+1 records in
0+1 records out
real	0m 3.58s
user	0m 0.00s
sys	0m 3.57s

After:

$ time dd if=/dev/mtd1 of=/dev/null bs=8M
0+1 records in
0+1 records out
real	0m 2.95s
user	0m 0.00s
sys	0m 2.93s

Signed-off-by: Aleksander Jan Bajkowski <A.Bajkowski@stud.elka.pw.edu.pl>
[minor commit message adjustments]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: maurerr <mariusd84@gmail.com>
2021-09-01 08:06:49 +00:00
..
apm821xx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
ar71xx ar71xx: change u-boot-env to read-write for ZyXEL NBG6616 2021-09-01 08:06:49 +00:00
arc770 arc770: update kernel version to 5.4 2020-07-27 20:15:10 +02:00
archs38 kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
armvirt armvirt,x86: fix build breakage of crypto ccp module 2020-06-23 09:29:00 +02:00
at91 kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
ath25 kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
ath79 ath79: increase spi frequency on TL-WDR3500/3600/4300/4310 2021-09-01 08:06:49 +00:00
bcm27xx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
bcm47xx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
bcm53xx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
bcm63xx bcm63xx: add missing endif board comnents 2021-09-01 08:06:48 +00:00
cns3xxx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
gemini gemini: Add swap partition to DNS-313 2020-07-31 18:34:40 +02:00
generic kernel: modules: add package kmod-iosched-bfq 2021-09-01 08:06:49 +00:00
imx6 kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
ipq40xx ipq40xx: refresh kernel 5.4 config 2020-08-06 12:51:51 +02:00
ipq806x ipq806x: replace patches with upstream version 2021-09-01 08:06:48 +00:00
ipq807x kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
kirkwood treewide: add sysupgrade comment for early DSA-adopters 2021-09-01 08:06:48 +00:00
lantiq kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
layerscape kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
malta malta: add missing symbols for kernel 5.4 2020-06-03 10:50:01 +01:00
mediatek mediatek: fix mt7622-rfb1 board support 2020-08-06 12:42:43 +02:00
mpc85xx kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
mvebu treewide: add sysupgrade comment for early DSA-adopters 2021-09-01 08:06:48 +00:00
mxs kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
octeon kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
octeontx treewide: kernel: drop redundant USB_EHCI_HCD=n config symbol 2020-07-09 10:28:40 +02:00
omap kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
oxnas oxnas: use vendor_model scheme for ox810se 2020-07-25 21:04:11 +02:00
pistachio kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
ramips ramips/mt7628: fix portmap based on board.d port assignment 2021-09-01 08:06:49 +00:00
rb532 kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
rockchip rockchip: enable rockchip-thermal 2020-07-29 01:40:20 +02:00
samsung kernel: Update kernel 4.14 to version 4.14.187 2020-07-04 21:12:42 +02:00
sunxi kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
tegra kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
uml treewide: Remove self from MAINTAINER entries 2019-12-23 13:18:04 -08:00
x86 Revert "procd: update to git HEAD" 2020-08-06 16:17:37 +01:00
zynq kernel: unify CONFIG_GPIO_SYSFS in kernel configs 2020-08-06 12:37:04 +02:00
Makefile build: add 'make kernel_xconfig' command 2020-07-08 16:07:05 +02:00