On Wed, Mar 11, 2015 at 01:01:12PM -0600, Simon Glass wrote:
Hi,
On 10 March 2015 at 23:48, Masahiro Yamada yamada.masahiro@socionext.com wrote:
Hi Yehuda, Tom, Simon,
2015-03-07 0:12 GMT+09:00 Tom Rini trini@konsulko.com:
On Thu, Mar 05, 2015 at 06:20:35PM +0000, Yehuda Yitschak wrote:
Hey Tom
In arch/arm/dts/Makfile: line 56 "DTC_FLAGS += -R 4 -p 0x1000"
this tell the dtc tool to add a 4K padding to the device tree blob.
i can't figure out why this is needed. Its creating a 4KB penalty on the dtb file so i guess it has some justification.
That's interesting and I don't see a corresponding thing in the kernel. Masahiro? This dates back to the introduction of the Makefile and that's you in the git log, thanks!
Not me! I just converted the Makefile into Kbuild style.
The option "-R 4 -p 0x1000" was introduced by:
commit bbb0b128c3956ac549471addc314702fbe0ace63 Author: Simon Glass sjg@chromium.org Date: Sat Oct 15 05:48:21 2011 +0000
fdt: Add support for embedded device tree (CONFIG_OF_EMBED)Simon, Looks like the 4K padding was introduced by you. Can you explain why?
I think at the time perhaps we were thinking of modifying the FDT in early U-Boot init, but that did not happen. I think it can be dropped. Using my time machine I just sent a patch to do this a few weeks ago:
As part of your start-on-rockchip series (Thanks, btw) :)