From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: PSCI version misdetection
Date: Mon, 12 Mar 2018 10:02:47 +0000 [thread overview]
Message-ID: <20180312100247.qd2cph56bhypzwp7@salmiak> (raw)
In-Reply-To: <CAOMZO5BbxFTfD_ZsL5zVhHU5Ue_J_YGBW35AwNx=PVpu6WsqwQ@mail.gmail.com>
On Sat, Mar 10, 2018 at 01:46:30PM -0300, Fabio Estevam wrote:
> Hi,
>
> On a imx7d-sdb board running 4.14-rc6:
>
> [ 0.000000] psci: probing for conduit method from DT.
> [ 0.000000] psci: PSCIv65535.65535 detected in firmware.
> [ 0.000000] psci: Using standard PSCI v0.2 function IDs
> [ 0.000000] psci: MIGRATE_INFO_TYPE not supported.
>
> The PSCI version seems to be misdetected.
>
> CONFIG_ARMV7_PSCI_1_0 is passed in U-Boot, so I would expect to see:
>
> psci: PSCIv1.0 detected in firmware.
>
> Any ideas?
It sounds like U-Boot hasn't implemented the PSCI_VERSION call, and is
returning NOT_IMPLEMENTED (-1). If so, this is not a conforming PSCI 1.0
implementation, as PSCI_VERSION is mandatory.
AFAICT, The default implementation in arch/arm/cpu/armv7/psci.S returns
NOT_SUPPORTED.
Where does the implementation for imx7d-sdb live? Is this upstream?
Thanks,
Mark.
next prev parent reply other threads:[~2018-03-12 10:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-10 16:46 PSCI version misdetection Fabio Estevam
2018-03-11 18:37 ` Fabio Estevam
2018-03-11 18:38 ` Fabio Estevam
2018-03-12 10:02 ` Mark Rutland [this message]
2018-03-12 11:12 ` Fabio Estevam
2018-03-12 11:36 ` Mark Rutland
2018-03-12 11:56 ` Fabio Estevam
2018-03-12 12:13 ` Mark Rutland
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