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authorAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-05-17 13:50:33 +0200
committerAdrian Schmutzler <freifunk@adrianschmutzler.de>2020-05-18 11:38:22 +0200
commit30cc7f3510fbdffbe1548bc008f1d99146dfbda6 (patch)
tree8a63ebfb3502ee4885158314775ca5c80b01d5b4
parent13c33f3f121ca6fe2ab1f80e04cf2d4f2cd6abec (diff)
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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>
-rw-r--r--target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi4
1 files changed, 3 insertions, 1 deletions
diff --git a/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi b/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
index 83a789f287..3813efaa53 100644
--- a/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
+++ b/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
@@ -27,7 +27,9 @@
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
- spi-max-frequency = <10000000>;
+
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
partitions {
compatible = "fixed-partitions";