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From: Paolo Pisati <p.pisati@gmail.com>
To: Loic Poulain <loic.poulain@linaro.org>
Cc: Paolo Pisati <p.pisati@gmail.com>,
	Brian Masney <masneyb@onstation.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	Andy Gross <agross@kernel.org>,
	linux-kernel@vger.kernel.org,
	Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Subject: Re: msm8996: sdhci-msm: apq8096-db820c sdhci fails to init - "Timeout waiting for hardware interrupt."
Date: Fri, 11 Oct 2019 16:22:59 +0200
Message-ID: <20191011142259.GA1558@harukaze> (raw)
In-Reply-To: <CAMZdPi9hTQQcFHMRkj2R9t-P9AiPh01hKGPP5_F8T+MUuckVHA@mail.gmail.com>

On Fri, Oct 11, 2019 at 02:47:05PM +0200, Loic Poulain wrote:
> > No dice, same exact problem.
> >
> > But the patch is present downstream[1]:
> >
> > commit c26727f853308dc4a6645dad09e9565429f8604f
> > Author: Loic Poulain <loic.poulain@linaro.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@linaro.org>
> >
> >
> > so it's probably worth carrying it.
> 
> I've sent it to LKML, but it has never landed (and I've never followed-up).

I see - btw, do you have a recent kernel where the mmc works on the db820c?
-- 
bye,
p.

      reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-10 14:32 Paolo Pisati
2019-10-10 14:36 ` Jeffrey Hugo
2019-10-10 14:56   ` Paolo Pisati
2019-10-11  6:01 ` Brian Masney
2019-10-11 11:22   ` Paolo Pisati
2019-10-11 12:47     ` Loic Poulain
2019-10-11 14:22       ` Paolo Pisati [this message]

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