linux-kernel - Re: msm8996: sdhci-msm: apq8096-db820c sdhci fails to init - "Timeout waiting for hardware interrupt."

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Date:   Fri, 11 Oct 2019 13:22:45 +0200
From:   Paolo Pisati <p.pisati@...il.com>
To:     Brian Masney <masneyb@...tation.org>
Cc:     Paolo Pisati <p.pisati@...il.com>, linux-arm-msm@...r.kernel.org,
        Andy Gross <agross@...nel.org>, linux-kernel@...r.kernel.org,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>
Subject: Re: msm8996: sdhci-msm: apq8096-db820c sdhci fails to init -
 "Timeout waiting for hardware interrupt."

On Fri, Oct 11, 2019 at 02:01:30AM -0400, Brian Masney wrote:
> I encountered that same error working on the Nexus 5 support upstream.
> Here's the fix:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=03864e57770a9541e7ff3990bacf2d9a2fffcd5d

No dice, same exact problem.

But the patch is present downstream[1]:

commit c26727f853308dc4a6645dad09e9565429f8604f
Author: Loic Poulain <loic.poulain@...aro.org>
Date:   Wed Dec 12 17:51:48 2018 +0100

arm64: dts: apq8096-db820c: Increase load on l21 for SDCARD

In the same way as for msm8974-hammerhead, l21 load, used for SDCARD
VMMC, needs to be increased in order to prevent any voltage drop issues
(due to limited current) happening with some SDCARDS or during specific
operations (e.g. write).

Fixes: 660a9763c6a9 (arm64: dts: qcom: db820c: Add pm8994 regulator node)
Signed-off-by: Loic Poulain <loic.poulain@...aro.org>


so it's probably worth carrying it.

1:
https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/commit/arch/arm64/boot/dts/qcom?h=release/qcomlt-4.14&id=e6415afc1aef2ac9361437ff583ba1be5a932b78
-- 
bye,
p.