On Tue, Aug 23, 2016 at 1:36 PM, ayaka [off-list ref] wrote:

On 08/24/2016 02:14 AM, Rob Herring wrote:

quoted

On Mon, Aug 22, 2016 at 10:18:09PM +0800, Randy Li wrote:

quoted

The TOPEET itop exynos 4412 have three versions base board. The
Elite version is the cheap one without too much peripheral devices
on it.

Currently supported are serial console, wired networking(USB),
USB OTG in peripheral mode, USB host, SD storage, GPIO buttons,
PWM beeper, ADC and LEDs.

[...]

quoted

quoted

+/dts-v1/;
+#include "exynos4412-itop-scp-core.dtsi"
+
+/ {
+       model = "TOPEET iTop 4412 Elite board based on Exynos4412";
+       compatible = "topeet,itop4412-elite", "samsung,exynos4412",
"samsung,exynos4";
+
+       chosen {
+               bootargs ="console=ttySAC2,115200";

Don't need console set with...

But could I set something like rootfs here ?
As the bootloader(old u-boot) offered by the vendor is brick, it is
impossible to save any something in u-boot.

Yes, but then that is a user decision and shouldn't really be there
either. In other words, ether the bootloader should set bootargs
(which even a vendor u-boot should be able to do either directly or
the zImage can take it from the ATAGS) or a user can edit the dts and
carry that change.

However, there are probably plenty of examples in the kernel that
counter what I just said.

Rob