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    SubjectRe: [PATCH 5/5] rtc: at91sam9: add microchip,sam9x60-rtt
    On 13/04/2020 08:50:02+0000, Claudiu.Beznea@microchip.com wrote:
    > part of 1/5 is still necessary.
    >

    indeed.

    > Regarding the fallback to "atmel,at91sam9260-rtt" I am aware of that. I
    > chose this approach because this IP is a bit different than the one with
    > "atmel,at91sam9260-rtt" compatible, meaning it has a features that the old
    > one has not. I'm talking about [1] which I cannot see on a SAM9G45 [2]
    > where RTT IP uses "atmel,at91sam9260-rtt" as compatible.
    >
    > Is true it may be necessary in the future when new features may be
    > implemented. Taking this into account, would you like to get rid of the new
    > compatible in code and keep it only in device tree?
    >

    What I said is not that the new compatible is not necessary at all but
    that it can be avoided in the aic code.

    > [1]
    > http://ww1.microchip.com/downloads/en/DeviceDoc/SAM9X60-Data-Sheet-DS60001579B.pdf#_OPENTOPIC_TOC_PROCESSING_d137e64502
    > [2]
    > http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6438-32-bit-ARM926-Embedded-Microprocessor-SAM9G45_Datasheet.pdf
    >
    > >
    > > I think 2/5 may be useful in the future but as far as the aic fixup
    > > is concerned, both IPs are identical.
    > >
    > >> - reg: should encode the memory region of the RTT controller
    > >> - interrupts: rtt alarm/event interrupt
    > >> - clocks: should contain the 32 KHz slow clk that will drive the RTT block.
    > >> --
    > >> 2.7.4
    > >>
    > >
    > > --
    > > Alexandre Belloni, Bootlin
    > > Embedded Linux and Kernel engineering
    > > https://bootlin.com
    > >
    > > _______________________________________________
    > > linux-arm-kernel mailing list
    > > linux-arm-kernel@lists.infradead.org
    > > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
    > >

    --
    Alexandre Belloni, Bootlin
    Embedded Linux and Kernel engineering
    https://bootlin.com

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