linux-kernel - Re: [Question] Question about supporting sysreg only CoreSight ETMv4.4 on ACPI machines

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Message-ID: <Y0+5cESVK1LVXROj@shell.armlinux.org.uk>
Date:   Wed, 19 Oct 2022 09:46:40 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Suzuki Kuruppassery Poulose <suzuki.poulose@....com>
Cc:     Xiongfeng Wang <wangxiongfeng2@...wei.com>,
        yehaiyang2@...ilicon.com, wanghuiqiang <wanghuiqiang@...wei.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, mark.rutland@....com,
        Catalin Marinas <catalin.marinas@....com>,
        Anshuman Khandual <Anshuman.Khandual@....com>
Subject: Re: [Question] Question about supporting sysreg only CoreSight
 ETMv4.4 on ACPI machines

On Tue, Oct 18, 2022 at 10:18:08AM +0100, Suzuki Kuruppassery Poulose wrote:
> That is true. Unfortunately, supporting this requires us to move away from
> the AMBA framework (at least) for ETM4x devices. This is currently
> developed by Anshuman. We can share it as soon as this is complete.

Can we not find a way to create AMBA devices from ACPI?

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