2017-04-18 12:01 GMT+08:00 Simon Glass sjg@chromium.org:
Hi Jonas,
On 17 April 2017 at 15:13, Jonas Karlman jonas@kwiboo.se wrote:
Set ethernet mac address in late init for Tinker Board, prevents getting a random mac address each boot.
Read mac address from eeprom, first 6 bytes from 0x50 on i2c2. Same as /etc/init.d/rockchip.sh on Tinker OS.
Signed-off-by: Jonas Karlman jonas@kwiboo.se
board/rockchip/tinker_rk3288/tinker-rk3288.c | 26
++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/board/rockchip/tinker_rk3288/tinker-rk3288.c
b/board/rockchip/tinker_rk3288/tinker-rk3288.c
index 79541a3939..48165b2545 100644 --- a/board/rockchip/tinker_rk3288/tinker-rk3288.c +++ b/board/rockchip/tinker_rk3288/tinker-rk3288.c @@ -5,3 +5,29 @@ */
#include <common.h> +#include <i2c.h> +#include <netdev.h>
+int rk_board_late_init(void) +{
- struct udevice *dev;
- int ret;
- u8 mac[6];
- ret = i2c_get_chip_for_busnum(2, 0x50, 1, &dev);
- if (ret) {
- debug("failed to get eeprom\n");
- return 0;
- }
I'm sure this works, but really we should have this chip mentioned in the device tree under &i2c2. Then we should be able to use the i2c_eeprom driver. I cannot see this board supported in Linux to figure out how it does it there.
I think tinker is the CHIP board, right? Are there instructions somewhere on how to load U-Boot onto it?
tinker board is made by Asus. it use sd card as its boot media. to build U-Boot for tinker board CROSS_COMPILE=arm-linux-gnueabihf- make tinker-rk3288_defconfig all -j4 tools/mkimage -n rk3288 -T rksd -d spl/u-boot-spl-dtb.bin out cat u-boot-dtb.bin >> out to flash u-boot, mount sd card to your host PC. use below command. (please make sure /dev/sdb is the mount point of your sd card) sudo dd if=out of=/dev/sdb seek=64 conv=notrunc
- ret = dm_i2c_read(dev, 0x0, mac, 6);
- if (ret) {
- debug("failed to read mac\n");
- return 0;
- }
- if (is_valid_ethaddr(mac))
- eth_setenv_enetaddr("ethaddr", mac);
- return 0;
+}
2.11.0
Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot