On 7/24/25 09:56, Krzysztof Kozlowski wrote: > On 23/07/2025 10:21, Ivaylo Ivanov wrote: >> On 7/23/25 11:15, Krzysztof Kozlowski wrote: >>> On Tue, Jul 22, 2025 at 03:10:36PM +0300, Ivaylo Ivanov wrote: >>>> Some device trees, like the exynos2200 one, configure the root node >>>> with #address-cells and #size-cells set to 2. However, the usi binding >>>> expects 32 bit address space only. Allow these determining properties to >>> So if USI expects 32 bit, then why do we allow 64? >>> >>> Switching this to 2 means you use 64-bit addressing for children >> I don't, but the main point was to avoid defining ranges for every single usi > I do not understand your "I don't", because you do. I meant it in the "I don't _need_ to explicitly use that, but it's _nice_ to have" way, so I don't have to clutter the nodes with address translations in ranges. Best regards, Ivaylo > You change the child > address space to 64 bit and switch to 36/64 bit DMA. That's the meaning > of address cells 2. > > > Best regards, > Krzysztof
