On 23 July 2018 at 16:24, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote: > Hi Krzysztof, > > On 2018-07-18 21:59, Krzysztof Kozlowski wrote: >> Suspend to RAM on Odroid XU3/XU4/HC1 family (Exynos5422) causes >> imprecise abort: >> >> PM: Syncing filesystems ... done. >> Freezing user space processes ... (elapsed 0.003 seconds) done. >> OOM killer disabled. >> Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done. >> wake enabled for irq 139 >> Disabling non-boot CPUs ... >> IRQ51 no longer affine to CPU1 >> IRQ52 no longer affine to CPU2 >> IRQ53 no longer affine to CPU3 >> IRQ54 no longer affine to CPU4 >> IRQ55 no longer affine to CPU5 >> IRQ56 no longer affine to CPU6 >> cpu cpu4: Dropping the link to regulator.40 >> IRQ57 no longer affine to CPU7 >> Unhandled fault: external abort on non-linefetch (0x1008) at 0xf081a028 >> Internal error: : 1008 [#1] PREEMPT SMP ARM >> >> with last call trace in exynos_suspend_enter(). >> >> The abort is caused by writing to register in secure part of sysram. >> All Exynos5422 devices, including Hardkernel Odroid boards, boot with >> TrustZone in non-secure mode therefore they should access non-secure >> sysram. >> >> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> >> >> --- >> >> Comments, whether my understanding is correct, are welcomed! > > The decision, weather to use secure or non-secure sysram depends on the > enabled TrustZone interface IMHO. Exynos5420 PeachPIT and Exynos5800 PeachPI > don't use TrustZone and don't have 'firmware' node in dts, thus they should > keep existing code. Ah, you are right. SMDK5420 also would be affected. I'll fix the patch. Thanks for feedback! Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
