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    SubjectRe: [PATCH v2] arm64: dts: rockchip: add rk3399 UART DMAs
    Date
    Hi,

    Am Dienstag, 26. März 2019, 14:49:16 CET schrieb Katsuhiro Suzuki:
    > Hello Robin,
    >
    > Sorry for inconvenience. Since I don't adhere enabling DMA for UARTs,
    > please revert my patch if you need.

    I've dropped the patch from my queue now.

    > BTW, there are DMA properties in RK3328 device-tree like as this patch.
    > RK3328 UART DMA could not work correctly too...??

    I remember Rockcihip dma-controllers having issues with burst-sizes
    and flushing (there is a no-flushp option in pl330), so it's
    possible that all share the same error up to rk3399 and rk3328

    But so far no-one has shouted regarding the rk3328.


    Heiko

    > On 2019/03/26 20:48, Robin Murphy wrote:
    > > On 25/03/2019 12:34, Heiko Stuebner wrote:
    > >> Am Donnerstag, 21. März 2019, 17:22:44 CET schrieb Katsuhiro Suzuki:
    > >>> Add UART dma channels as specified by the rk3399 TRM.
    > >>>
    > >>> Refer:
    > >>> RK3399 TRM V1.4: Chapter 12 DMA Controller
    > >>>
    > >>> Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
    > >>
    > >> applied for 5.2
    > >
    > > As a heads-up, I did manage to try my board with this patch applied over
    > > the weekend, and it makes probing the bluetooth adapter fail with
    > > communication errors, so I'm not sure the 8250 and pl330 drivers are
    > > really cooperating well enough :(
    > >
    > > Robin.
    > >
    >
    >




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