linux-kernel - Re: [PATCH v2] arm64: dts: rockchip: add rk3399 UART DMAs

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Message-ID: <e7bcf8b9-123e-eb30-f47d-7f8855f30ccb@katsuster.net>
Date:   Tue, 26 Mar 2019 22:49:16 +0900
From:   Katsuhiro Suzuki <katsuhiro@...suster.net>
To:     Robin Murphy <robin.murphy@....com>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] arm64: dts: rockchip: add rk3399 UART DMAs

Hello Robin,

Sorry for inconvenience. Since I don't adhere enabling DMA for UARTs,
please revert my patch if you need.

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

Best Regards,
Katsuhiro Suzuki


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@...suster.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.
>