> -----Original Message----- > From: openwrt-devel [mailto:openwrt-devel-boun...@lists.openwrt.org] > On Behalf Of David Bauer > Sent: Dienstag, 21. Juli 2020 23:40 > To: openwrt-devel@lists.openwrt.org > Subject: [PATCH] ramips: increase SPI frequency for MT7620 Archer > > Increase the SPI frequency for the MT7620 based TP-Link Archer series to > 30MHz.
Acked-by: Adrian Schmutzler <freif...@adrianschmutzler.de>
I'm not sure which are the frequency steps actually observed on that target,
but raising it above the abundant copy/pasted 10 MHz seems a good idea in any
case.
Best
Adrian
>
> 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@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@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 <m...@david-bauer.net>
> ---
> 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@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@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@0 {
> compatible = "jedec,spi-nor";
> reg = <0>;
> - spi-max-frequency = <10000000>;
> + spi-max-frequency = <30000000>;
>
> partitions {
> compatible = "fixed-partitions";
> --
> 2.27.0
>
>
> _______________________________________________
> openwrt-devel mailing list
> openwrt-devel@lists.openwrt.org
> https://lists.openwrt.org/mailman/listinfo/openwrt-devel
openpgp-digital-signature.asc
Description: PGP signature
_______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
