[openwrt/openwrt] ramips: increase SPI frequency for MT7620 Archer

[LEDE Commits]

blocktrron pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/4cd5ce5a7f2708a6a352ec8ab0115c8decccf3b0

commit 4cd5ce5a7f2708a6a352ec8ab0115c8decccf3b0
Author: David Bauer <mail at david-bauer.net>
AuthorDate: Tue Jul 21 20:11:28 2020 +0200

    ramips: increase SPI frequency for MT7620 Archer
    
    Increase the SPI frequency for the MT7620 based TP-Link Archer
    series to 30MHz.
    
    TP-Link uses different SPI flash chips for the same board
    revision, so be conservative to not break boards with a
    different chip. 30MHz should be well supported by all chips.
    
    Tested on Archer C2 v1 (GD25Q64B) and Archer C20i (W25Q64FV).
    
    Archer C20i (before)
    ====================
    root at OpenWrt:~# time dd if=/dev/mtd1 of=/tmp/test.bin bs=64k
    122+0 records in
    122+0 records out
    real    0m 15.30s
    user    0m 0.00s
    sys     0m 15.29s
    
    Archer C20i (after)
    ===================
    root at OpenWrt:~# time dd if=/dev/mtd1 of=/tmp/test.bin bs=64k
    122+0 records in
    122+0 records out
    real    0m 5.99s
    user    0m 0.00s
    sys     0m 5.98s
    
    Signed-off-by: David Bauer <mail at david-bauer.net>
    Acked-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 target/linux/ramips/dts/mt7620a_tplink_archer-c2-v1.dts | 2 +-
 target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts | 2 +-
 target/linux/ramips/dts/mt7620a_tplink_archer.dtsi      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer-c2-v1.dts b/target/linux/ramips/dts/mt7620a_tplink_archer-c2-v1.dts
index c0b2c1ae92..75ddc5fb5d 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer-c2-v1.dts
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer-c2-v1.dts
@@ -82,7 +82,7 @@
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+		spi-max-frequency = <30000000>;
 
 		partitions {
 			compatible = "fixed-partitions";
diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
index c3c0efdfe6..0c0f4bb8e9 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
@@ -121,7 +121,7 @@
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+		spi-max-frequency = <30000000>;
 
 		partitions {
 			compatible = "fixed-partitions";
diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi b/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
index 184627b9f4..670bad615d 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
@@ -43,7 +43,7 @@
 	flash at 0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+		spi-max-frequency = <30000000>;
 
 		partitions {
 			compatible = "fixed-partitions";