On Tue, Apr 04, 2023 at 09:22:25PM +0900, Jaewon Kim wrote: > On 23. 4. 4. 20:41, Mark Brown wrote: > > There's no value in describing the DMA the guest shouldn't use then > > providing an additional property telling the guest not to pay attention > > to the DMA when we could simply not do the first step. > Is it correct in your opinion to change to polling mode if there is no > DMA describing in DeviceTree? Yes, exactly. > Currently, if there is no DMA, the probe failed in s3c64xx driver. > So I added the "samsung,spi-polling" property not to check DMA. > If your opinion is to switch to Polling mode if there is no DMA, I will > fix it in the next version. Great, that sounds like a better solution. If there is a description of DMA but it can't be fetched then an error should be right, but if there's just no DMA described then switching to polling mode seems better.
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