Re: [PATCH v1] dmaengine: tegra: Use relaxed versions of readl/writel

Dmitry Osipenko
2019-04-26T12:19:27Z

26.04.2019 15:01, Vinod Koul пишет:
> On 25-04-19, 02:17, Dmitry Osipenko wrote:
>> The readl/writel functions are inserting memory barrier in order to
>> ensure that memory stores are completed. On Tegra20 and Tegra30 this
>> results in L2 cache syncing which isn't a cheapest operation. The
>> tegra20-apb-dma driver doesn't need to synchronize generic memory
>> accesses, hence use the relaxed versions of the functions.
>
> Subsystem name is **dmaengine** not dma! Please fix that
>

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