linux-kernel - Re: [RFC 0/2] Add workaround for core wake-up on IPI for i.MX8MQ

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Message-ID: <26d3834d-6fba-be48-5b3c-5abf86d121a7@posteo.de>
Date:   Fri, 8 Nov 2019 15:17:12 +0100
From:   Martin Kepplinger <martink@...teo.de>
To:     Abel Vesa <abel.vesa@....com>
Cc:     Leonard Crestez <leonard.crestez@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <marc.zyngier@....com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Jacky Bai <ping.bai@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Carlo Caione <ccaione@...libre.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC 0/2] Add workaround for core wake-up on IPI for i.MX8MQ

On 08.11.19 12:50, Abel Vesa wrote:
> On 19-11-08 12:21:21, Martin Kepplinger wrote:
> 
>> Hi Leonard, hi Abel,
>>
>> Thanks for having a look! To sum up this problem and not to get confused:
>>
>> We have the workaround that changes irq-imx-gpcv2 from this very email
>> thread, to be used with mainline ATF. when applying Abel's recent diff,
>> Linux 5.4 boots but I still don't have a cpuidle driver.
>>
>> When I enable CONFIG_ARM_PSCI_CPUIDLE, the kernel hangs during boot
>> (after probing mmc, but that doesn't tell much)
>>
>> What do I miss?
>>
> 
> OK, please fetch the branches called "imx8mq-err11171" from both following github repos and give it a try:
> 
> https://github.com/abelvesa/linux.git
> 
> and
> 
> https://github.com/abelvesa/arm-trusted-firmware.git
> 
> I just tested it. Works with defconfig.
> 

thanks for the reminder. I was missing IMX_SCU_PD appearently.

thanks for the effort, I hope this is useful for others too.

                         martin