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Date:   Mon, 9 Jul 2018 17:48:50 +0530
From:   Bhushan Shah <bshah@kde.org>
To:     Andy Gross <andy.gross@linaro.org>,
        David Brown <david.brown@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Brian Masney <masneyb@onstation.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>
Subject: Re: [PATCH] ARM: dts: qcom: msm8974-hammerhead: increase load on l20
 for sdhci
Message-ID: <20180709121850.GC1774@orion>
References: <20180709091628.GA8854@orion>
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Hi,

On Mon, Jul 09, 2018 at 02:46:28PM +0530, Bhushan Shah wrote:
> The kernel would not boot on the hammerhead hardware due to the
> following error:
>=20
> mmc0: Timeout waiting for hardware interrupt.
> mmc0: sdhci: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D SDHCI REGISTER DUMP =3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> mmc0: sdhci: Sys addr:  0x00000200 | Version:  0x00003802
> mmc0: sdhci: Blk size:  0x00000200 | Blk cnt:  0x00000200
> mmc0: sdhci: Argument:  0x00000000 | Trn mode: 0x00000023
> mmc0: sdhci: Present:   0x03e80000 | Host ctl: 0x00000034
> mmc0: sdhci: Power:     0x00000001 | Blk gap:  0x00000000
> mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00000007
> mmc0: sdhci: Timeout:   0x0000000e | Int stat: 0x00000000
> mmc0: sdhci: Int enab:  0x02ff900b | Sig enab: 0x02ff100b
> mmc0: sdhci: AC12 err:  0x00000000 | Slot int: 0x00000000
> mmc0: sdhci: Caps:      0x642dc8b2 | Caps_1:   0x00008007
> mmc0: sdhci: Cmd:       0x00000c1b | Max curr: 0x00000000
> mmc0: sdhci: Resp[0]:   0x00000c00 | Resp[1]:  0x00000000
> mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
> mmc0: sdhci: Host ctl2: 0x00000008
> mmc0: sdhci: ADMA Err:  0x00000000 | ADMA Ptr: 0x70040220
> mmc0: sdhci: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> mmc0: Card stuck in wrong state! mmcblk0 card_busy_detect status: 0xe00
> mmc0: cache flush error -110
> mmc0: Reset 0x1 never completed.
>=20
> This patch increases the load on l20 to 0.2 amps for the sdhci
> and allows the device to boot normally.
>=20
> Signed-off-by: Bhushan Shah <bshah@kde.org>

Please also add,

Signed-off-by: Brian Masney <masneyb@onstation.org>

which I missed in previous patch.

> Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Tested-by: Brian Masney <masneyb@onstation.org>
> ---
>  arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts | 2 ++
>  1 file changed, 2 insertions(+)
>=20
> diff --git a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts b/a=
rch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> index 4dc0b347b1ee..c2dc9d09484a 100644
> --- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> +++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> @@ -189,6 +189,8 @@
>  						regulator-max-microvolt =3D <2950000>;
> =20
>  						regulator-boot-on;
> +						regulator-system-load =3D <200000>;
> +						regulator-allow-set-load;
>  					};
> =20
>  					l21 {
> --=20
> 2.17.1
>=20

--=20
Bhushan Shah
http://blog.bshah.in
IRC Nick : bshah on Freenode
GPG key fingerprint : 0AAC 775B B643 7A8D 9AF7 A3AC FE07 8411 7FBC E11D

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