Hello,

On Tue, 26 Jun 2018 10:17:01 +0200, Miquel Raynal wrote:

From: Victor Gu <redacted>

The PSCI area should be reserved in Linux for PSCI operations such as
suspend/resume.

Reserve 2MiB of memory which matches the area used by ATF (BL1, BL2,
BL3x, see [1] in ATF source code). This covers all PSCI code and data
area and is 2MiB aligned, which is required by Linux for huge pages
handling.

Please note that this is a default setup allowing to perform PSCI
operations with legacy bootloaders. Recent bootloaders should update the
region size/position accordingly.

[1] plat/marvell/a3700/common/include/platform_def.h

Signed-off-by: Victor Gu <redacted>
[miquel.raynal at bootlin.com: reword of commit message, comment in the DTSI]
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com