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| author |   Krzysztof Kozlowski <krzk@kernel.org> | 2018-07-24 18:49:46 +0200 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2018-08-30 19:46:06 +0200 |
| commit | e0b35c1ab5ac5f0453d1093770e119bd8d63d85c (patch) | |
| tree | 172714124cdb99984c35b6b1d98a18cb27d06210 /Documentation/arm | |
| parent | ARM: exynos: Store Exynos5420 register state in one variable (diff) | |
| download | linux-dev-e0b35c1ab5ac5f0453d1093770e119bd8d63d85c.tar.xz linux-dev-e0b35c1ab5ac5f0453d1093770e119bd8d63d85c.zip | |
ARM: exynos: Fix imprecise abort during Exynos5422 suspend to RAM
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.
Boards booted under secure firmware (e.g. Hardkernel Odroid boards)
should access non-secure sysram.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'Documentation/arm')
| -rw-r--r-- | Documentation/arm/Samsung/Bootloader-interface.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/arm/Samsung/Bootloader-interface.txt b/Documentation/arm/Samsung/Bootloader-interface.txt index ed494ac0beb2..d17ed518a7ea 100644 --- a/Documentation/arm/Samsung/Bootloader-interface.txt +++ b/Documentation/arm/Samsung/Bootloader-interface.txt @@ -26,6 +26,7 @@ Offset Value Purpose 0x20 0xfcba0d10 (Magic cookie) AFTR 0x24 exynos_cpu_resume_ns AFTR 0x28 + 4*cpu 0x8 (Magic cookie, Exynos3250) AFTR +0x28 0x0 or last value during resume (Exynos542x) System suspend 2. Secure mode |