2015-11-30 19:23:31

by Kevin Hilman

[permalink] [raw]
Subject: Re: [PATCH 1/7] ARM: dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2

On Tue, Oct 20, 2015 at 9:57 PM, Bjorn Andersson
<[email protected]> wrote:
> Make sure the blsp1_uart2 pins are in the correct state for the uart.
>
> Signed-off-by: Bjorn Andersson <[email protected]>

kernelci.org has been detecting boot failures on my z1 since
next-20151120[1] and I finally got around to bisecting, which pointed
to this patch which is in next in the for of commit 14cd83b824aa ARM:
dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2

That commit doesn't revert cleanly on top of next-20151130, but
manually removing the stuff added in this patch, next-20151130 boots
fine on the z1.

Kevin

[1] http://kernelci.org/boot/qcom-msm8974-sony-xperia-honami/job/next/kernel/next-20151127/defconfig/multi_v7_defconfig/lab/lab-khilman/?_id=5658061359b5140196b5fd2f

> ---
> .../boot/dts/qcom-msm8974-sony-xperia-honami.dts | 23 ++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
> index 016f9ad9392a..6f7e4ef4ccf7 100644
> --- a/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
> +++ b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
> @@ -23,6 +23,29 @@
> &soc {
> serial@f991e000 {
> status = "ok";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&blsp1_uart2_pin_a>;
> + };
> +
> + pinctrl@fd510000 {
> + blsp1_uart2_pin_a: blsp1-uart2-pin-active {
> + rx {
> + pins = "gpio5";
> + function = "blsp_uart2";
> +
> + drive-strength = <2>;
> + bias-pull-up;
> + };
> +
> + tx {
> + pins = "gpio4";
> + function = "blsp_uart2";
> +
> + drive-strength = <4>;
> + bias-disable;
> + };
> + };
> };
> };
>
> --
> 2.4.2
>
> --
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2015-11-30 20:19:17

by Bjorn Andersson

[permalink] [raw]
Subject: Re: [PATCH 1/7] ARM: dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2

On Mon, Nov 30, 2015 at 11:23 AM, Kevin Hilman <[email protected]> wrote:
> On Tue, Oct 20, 2015 at 9:57 PM, Bjorn Andersson
> <[email protected]> wrote:
>> Make sure the blsp1_uart2 pins are in the correct state for the uart.
>>
>> Signed-off-by: Bjorn Andersson <[email protected]>
>
> kernelci.org has been detecting boot failures on my z1 since
> next-20151120[1] and I finally got around to bisecting, which pointed
> to this patch which is in next in the for of commit 14cd83b824aa ARM:
> dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2
>
> That commit doesn't revert cleanly on top of next-20151130, but
> manually removing the stuff added in this patch, next-20151130 boots
> fine on the z1.
>
> Kevin
>
> [1] http://kernelci.org/boot/qcom-msm8974-sony-xperia-honami/job/next/kernel/next-20151127/defconfig/multi_v7_defconfig/lab/lab-khilman/?_id=5658061359b5140196b5fd2f

Thanks Kevin,

I did see these too. But at the same time, as far as I can see, the
qcom_defconfig boots just fine - indicating that this particular
commit would not be the cause.

I'll fire up some builds to figure out what's going on.


PS. I believe earlycon would be more helpful than earlyprintk on the
multi platform build command line...

Regards,
Bjorn

2015-11-30 21:01:21

by Andy Gross

[permalink] [raw]
Subject: Re: [PATCH 1/7] ARM: dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2

On Mon, Nov 30, 2015 at 12:19:13PM -0800, Bjorn Andersson wrote:
> On Mon, Nov 30, 2015 at 11:23 AM, Kevin Hilman <[email protected]> wrote:
> > On Tue, Oct 20, 2015 at 9:57 PM, Bjorn Andersson
> > <[email protected]> wrote:
> >> Make sure the blsp1_uart2 pins are in the correct state for the uart.
> >>
> >> Signed-off-by: Bjorn Andersson <[email protected]>
> >
> > kernelci.org has been detecting boot failures on my z1 since
> > next-20151120[1] and I finally got around to bisecting, which pointed
> > to this patch which is in next in the for of commit 14cd83b824aa ARM:
> > dts: qcom: msm8974-honami: Define pinctrl state for blsp_uart2
> >
> > That commit doesn't revert cleanly on top of next-20151130, but
> > manually removing the stuff added in this patch, next-20151130 boots
> > fine on the z1.
> >
> > Kevin
> >
> > [1] http://kernelci.org/boot/qcom-msm8974-sony-xperia-honami/job/next/kernel/next-20151127/defconfig/multi_v7_defconfig/lab/lab-khilman/?_id=5658061359b5140196b5fd2f
>
> Thanks Kevin,
>
> I did see these too. But at the same time, as far as I can see, the
> qcom_defconfig boots just fine - indicating that this particular
> commit would not be the cause.
>
> I'll fire up some builds to figure out what's going on.

I threw the extra config options that qcom_defconfig had on it on top of my next
branch. I hadn't seen any kernel ci runs on that yet.