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ramips: increase spi-max-frequency for ipTIME mt7620 devices

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This commit increases the hardware SPI frequency from 24.2MHz to 48.3MHz.

[    5.314163] m25p80 spi0.0: speed: 24166666/40000000, rate: 8, prescal: 2, loops: 226
[    5.076323] m25p80 spi0.0: speed: 48333333/50000000, rate: 4, prescal: 1, loops: 162

`time cat /dev/mtd2 >/dev/null` is reduced from 5.64s to 4.36s on A104ns,
and from 11.39s to 8.81s on A1004ns.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
This commit is contained in:
Sungbo Eo 2020-04-05 14:11:34 +09:00 committed by Chuanhong Guo
parent 9169482f64
commit 13a185bf8a
1 changed files with 1 additions and 1 deletions
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2
target/linux/ramips/dts/mt7620a_iptime.dtsi
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@ -21,7 +21,7 @@
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <40000000>;
spi-max-frequency = <50000000>;
partitions {
compatible = "fixed-partitions";