Hi Peter,
On Tue, Jun 2, 2015 at 12:29 PM, Peter Chubb <peter.chubb@xxxxxxxxxxxx> wrote:
>>>>>> "Chanho" == Chanho Park <parkch98@xxxxxxxxx> writes:
>
> Chanho> The odroid-xu3 board which is based on exynos5422 not
> Chanho> exynos5800 is booted from cortex-a7 core unlike
> Chanho> exynos5800. The odroid-xu3's cpu order is quite strange. cpu0
> Chanho> and cpu5-7 are cortex-a7 cores and cpu1-4 are cortex-a15
> Chanho> cores. To correct this mis-odering, I added exynos5422.dtsi
> Chanho> and reversing cpu orders from exynos5420. Now, cpu0-3 are
> Chanho> cortex-a7 and cpu4-7 are cortex-a15.
>
> Does this patch make any difference? CPUs are numbered in the kernel
> in the order they're enumerated; with this patch or using the old dts
> I see the CPUs numbered the same after boot. And only 5 of the 8 come
> up: processor 0 is an A7; processors 1 through 4 are A15.
My patch is just reordering cpu order not fix previous Little core problem.
You'll need below patch from previous mail thread[1].
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index a825bca..e803ec5 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -124,6 +124,7 @@ void exynos_cpu_power_up(int cpu)
if (soc_is_exynos3250())
core_conf |= S5P_CORE_AUTOWAKEUP_EN;
+ pmu_raw_writel(1, S5P_PMU_SPARE2);
pmu_raw_writel(core_conf,
EXYNOS_ARM_CORE_CONFIGURATION(cpu));
}
[1]: https://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg44023.html
--
Best Regards,
Chanho Park
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