The introduction of ebf0d8dade ("ath79: add new ar934x spi driver")
made the SPI memory unusable on devices with very high spi-max-frequency
(104 MHz).
Here's how the actual clock is calculated: (AHB_CLK/((CLOCK_DIVIDER+1)*2))
where AHB_CLK is a fixed clock (e.g. 200MHz on AR9331) and CLOCK_DIVIDER
is the parameter we can set. Highest clock according to this formula is
AHB_CLK/2 (100MHz, but that didn't work in device tests).
The next possible value is AHB_CLK/4 (50MHz). Speeds between 50 MHz and
100 MHz will be rounded down, so using values higher than 50 MHz does
not provide any benefit.
Consequently, this patch reduces spi-max-frequency for all devices with
values higher than 50 MHz to 50 MHz (effectively, this only affects
devices with 104 MHz before this patch).
Tested on GL.inet GL-AR150:
Boot fails with 104 MHz but is successful with both 50 MHz and 80 MHz
(fast-read), where the latter two yield identical read speeds.
Fixes: ebf0d8dade ("ath79: add new ar934x spi driver")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
For several devices, wmac MAC address is set from art 0x1002
explicitly by using mtd-mac-address although mtd-cal-data is
pulled from art 0x1000.
With the MAC address in 0x1002, the driver should automatically
use it when reading caldata from 0x1000. Thus, remove the
redundant mtd-mac-address for those devices.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-by: Jeff Kletsky <git-commits@allycomm.com>
Tested-by: Karl Palsson <karlp@etactica.com>
This patch adds the label MAC address for several devices in
ath79.
Some devices require setting the MAC address in 02_network:
For the following devices, the netif device can be linked in
device tree, but the MAC address cannot be read:
- alfa-network,ap121f
- avm,fritz300e
- ubnt-xm devices
For the following devices, label MAC address is tied to lan or
wan, so no node to link to exists in device tree:
- adtran,bsap1800-v2
- adtran,bsap1840
- dlink,dir-842-c1/-c2/-c3
- engenius,ecb1750
- iodata,etg3-r
- iodata,wn-ac1167dgr
- iodata,wn-ac1600dgr
- iodata,wn-ac1600dgr2
- iodata,wn-ag300dgr
- nec,wg800hp
- nec,wg1200cr
- trendnet,tew-823dru
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Specifications:
- Atheros AR9331 (400 MHz)
- 64 MB of RAM (DDR2)
- 16 MB of Flash (SPI)
- 1T1R 2.4 Wlan (AR9331)
- 2x 10/100 Mbps Ethernet
- 3x LEDs, 1x gpio button
- 1x USB 2.0, 5V
- UART over usb, 115200n8
Upgrading from ar71xx target:
- Put image into board:
scp openwrt-ath79-generic-8dev_carambola2-squashfs-sysupgrade.bin \
root@192.168.1.1/tmp/
- Run sysupgrade
sysupgrade /tmp/sysupgrade.bin
Upgrading from u-boot:
- Set up tftp server with sysupgrade.bin image
- Go to u-boot (reboot and press ESC when prompted)
- Set TFTP server IP
setenv serverip 192.168.1.254
- Set device ip from same subnet
setenv ipaddr 192.168.1.1
- Copy new firmware to board
tftpboot 0x81000000 sysupgrade.bin
- erase flash
erase 0x9f050000 +${filesize}
- flash firmware
cp.b 0x81000000 0x9f050000 ${filesize}
- Reset board
reset
Signed-off-by: Rytis Zigmantavičius <rytis.z@8devices.com>
[wrapped long line in commit description, whitespace and art address
fix in DTS, keep default lan/wan setup, removed -n in sysupgrade]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
