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    SubjectRe: Add MediaTek MT6873 devapc driver
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    On Tue, 2020-06-09 at 11:32 -0600, Rob Herring wrote:
    > On Tue, Jun 09, 2020 at 06:24:19PM +0800, Neal Liu wrote:
    > > These patch series introduce a MediaTek MT6873 devapc driver.
    > >
    > > MT6873 bus frabric provides TrustZone security support and data
    > > protection to prevent slaves from being accessed by unexpected
    > > masters.
    > > The security violations are logged and sent to the processor for
    > > further analysis or countermeasures.
    > >
    > > Any occurrence of security violation would raise an interrupt, and
    > > it will be handled by devapc-mt6873 driver. The violation
    > > information is printed in order to find the murderer.
    >
    > There's also a proposed driver with similar functionality[1]. Come up
    > with a common solution.
    >
    > Rob
    >
    > [1] https://lore.kernel.org/linux-arm-kernel/20200128153806.7780-1-benjamin.gaignard@st.com/

    Actually, Mediatek devapc HW do the similar things. But the real
    "firewall" functionality is implemented in TrustZone instread of REE.
    This devapc-mt6873 driver is mainly handled the violation.

    Bus firewall framework seems not cover this parts.
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