From: Krzysztof Kozlowski <krzk@kernel.org>
To: Martin Kepplinger <martin.kepplinger@puri.sm>, alice.guo@oss.nxp.com
Cc: devicetree@vger.kernel.org, festevam@gmail.com,
kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org,
linux-imx@nxp.com, linux-kernel@vger.kernel.org, robh@kernel.org,
s.hauer@pengutronix.de, shawnguo@kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mq: remove SoC ID compatible
Date: Tue, 9 Mar 2021 21:56:30 +0100 [thread overview]
Message-ID: <d2030810-a307-0438-d4b0-be6aa092e551@kernel.org> (raw)
In-Reply-To: <20210309134251.2583679-1-martin.kepplinger@puri.sm>
On 09/03/2021 14:42, Martin Kepplinger wrote:
> this reverts commit ce58459d8c7f4174e7b8a8ea903dd949631334a3 for imx8mq.
>
> this is most likely not the real fix but works around the problem I have
> (with v5.12-rc2) I want to report:
>
> [ 0.766925] SoC revision 0x21
> [ 0.770286] imx8_soc_info soc@0: SoC revision via nvmem read failed: -517
>
> This leads to the system not booting up.
>
> This change makes use of the old way of reading soc_revision and thus
> works around the problem.
>
> What could be missing for the nvmem way to work here? Should it work
> in any case? I assume so if you add the compatible to imx8mq.dtsi. But
> if it would work, why keep the ocotp reads?
Hi,
Thanks for the report. 517 is deferred probe, so this could mean that
efuse/ocotp did not come up yet. However soc_id driver should handle it
and re-try after some try, shouldn't it? Unless there is a bug inside
(your change basically disables soc_id driver).
Best regards,
Krzysztof
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next prev parent reply other threads:[~2021-03-09 20:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-04 9:15 [PATCH v10 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc unique ID Alice Guo (OSS)
2021-01-04 9:15 ` [PATCH v10 2/4] arm64: dts: imx8m: add SoC ID compatible Alice Guo (OSS)
2021-01-04 9:15 ` [PATCH v10 3/4] arm64: dts: imx8m: add NVMEM provider and consumer to read soc unique ID Alice Guo (OSS)
2021-01-04 9:15 ` [PATCH v10 4/4] soc: imx8m: change to use platform driver Alice Guo (OSS)
2021-03-09 13:42 ` [PATCH] arm64: dts: imx8mq: remove SoC ID compatible Martin Kepplinger
2021-03-09 20:56 ` Krzysztof Kozlowski [this message]
2021-01-11 2:46 ` [PATCH v10 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc unique ID Shawn Guo
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