linux-kernel - Re: [PATCH v2 0/2] AM64: Add support for GPIO

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Message-ID: <1ba9bfd0-a4a7-bd0a-bd0a-df10d5348a30@ti.com>
Date:   Fri, 19 Mar 2021 10:52:12 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     Nishanth Menon <nm@...com>
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Dave Gerlach <d-gerlach@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/2] AM64: Add support for GPIO

Hi Nishanth,

On 09/03/21 9:28 pm, Nishanth Menon wrote:
> On 21:20-20210309, Aswath Govindraju wrote:
>> Hi Nishanth,
>>
>> On 09/03/21 8:13 pm, Nishanth Menon wrote:
>>> On 16:59-20210304, Aswath Govindraju wrote:
>>>> The following series of patches adds support for gpio on AM642 evm/sk.
>>>>
>>>> Changes since v1:
>>>> - Added DT for gpio subsystem present in MCU domain
>>>> - reserved the mcu gpio for firmware usage
>>>>
>>>> This series of patches depend on,
>>>> https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=439039
>>>> https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=439153
>>>>
>>>>
>>>> Aswath Govindraju (2):
>>>>   arm64: dts: ti: k3-am64: Add GPIO DT nodes
>>>>   arm64: dts: ti: k3-am642: reserve gpio in mcu domain for firmware
>>>>     usage
>>>>
>>>>  arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 45 ++++++++++++++++++++++++
>>>>  arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi  | 27 ++++++++++++++
>>>>  arch/arm64/boot/dts/ti/k3-am642-evm.dts  |  5 +++
>>>>  arch/arm64/boot/dts/ti/k3-am642-sk.dts   |  5 +++
>>>>  4 files changed, 82 insertions(+)
>>>>
>>>> -- 
>>>> 2.17.1
>>>>
>>>
>>>
>>> Based on your offline comment:
>>> -----
>>>
>>> On going through the bootlogs before posting for I found the following
>>> errors,
>>>
>>> [    1.091117] davinci_gpio 601000.gpio: IRQ index 2 not found
>>> [    1.101522] davinci_gpio 601000.gpio: error -ENXIO: IRQ not populated
>>>
>>> Some issues in allocating interrupts in case of main_gpio1. I
>>> accumulated the gpio with interrupt numbers. I'll try to debug the
>>> reason behind it and update you with its status. (bootlogs of ti-sdk,
>>> also have this error).
>>>
>>> -----
>>>
>>> I am going to drop this off my queue, please update if the fixup is some
>>> system configuration error or repost with fix.
>>>
>>
>> This is expected to be a fixup in the system configuration and not a bug
>> in the patch series. So, can you please have these patches in your queue
>> ? I'll soon post the test results indicating the functioning of GPIOs.
> 
> 
> Thanks for clarifying. I will wait till the test results are posted.
> Thanks in advance for digging into this and detailed testing.
> 

I've posted a respin(v3) of this series after rebasing on top of
ti-k3-dts-next branch and adding the GPIO test logs.

Thanks,
Aswath