Hello,
On 2015-05-28 06:00, Chanho Park wrote:
-----Original Message-----
From: Joonyoung Shim [mailto:jy0922.shim@xxxxxxxxxxx]
Sent: Thursday, May 28, 2015 10:59 AM
To: Chanho Park; kgene@xxxxxxxxxx; k.kozlowski@xxxxxxxxxxx
Cc: cw00.choi@xxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx;
javier.martinez@xxxxxxxxxxxxxxx; khilman@xxxxxxxxxx;
sjoerd.simons@xxxxxxxxxxxxxxx; heesub.shin@xxxxxxxxxxx
Subject: Re: [PATCH] ARM: dts: add exynos5422.dtsi to correct cpu order
Hi Chanho,
On 05/28/2015 12:15 AM, Chanho Park wrote:
The odroid-xu3 board which is based on exynos5422 not exynos5800 is
booted from cortex-a7 core unlike exynos5800. The odroid-xu3's cpu
order
is quite strange. cpu0 and cpu5-7 are cortex-a7 cores and cpu1-4 are
cortex-a15 cores. To correct this mis-odering, I added exynos5422.dtsi
and reversing cpu orders from exynos5420. Now, cpu0-3 are cortex-a7
and
cpu4-7 are cortex-a15.
The exynos5422 SoC can boot using cortex-a15 cpu depending on gpio
GPG2CON[1],
Yes, But, the pin is not controllable because it's checked in the iROM
area.
i think this is just Odroid-XU3 board problem. Is it
possible to overwrite cpus information directly from
exynos5422-odroidxu3.dts?
It's possible to override the info in the odroidxu3.dts. As you know,
however, a new exynos5422 board will be added soon. The board also has same
configuration of the gpio pin and booted cpu0 from a cortex-a7 core.
BTW, booting of secondary cpus are still broken. Is there any progress of
the patch[1]?
This patch is also generated top of the patch with some fixes.
Przemyslaw is checking how to solve this issue in the bootloader like it has
been solved for Exynos 5800 based Chromebooks. The plan is to use the same
SPL code as mentioned here:
https://www.mail-archive.com/u-boot@xxxxxxxxxxxxx/msg159960.html
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
