On 2023/5/10 16:33, Emil Renner Berthing wrote: > On Tue, 9 May 2023 at 20:05, Conor Dooley <conor@xxxxxxxxxx> wrote: >> >> On Tue, May 09, 2023 at 08:52:48PM +0800, Walker Chen wrote: >> > Hi Conor/Emil, >> > >> > DT overlay is used to describe combinations of VF2 and hat. >> > Do you have any comments on this patch ? >> >> Up to Emil :) >> >> I seem to recall that he said at the linux-riscv sync-up call that we >> have* that he was not in favour of overlays for hats like this. >> I'll let him confirm that though, I might very well be misinterpreting or >> misremembering what he said. > > What probably meant was that I didn't want a bunch of different device > trees for each combination board * hat. An overlay makes a lot more > sense. However, looking through the kernel tree there is a surprising > lack of overlays for hats committed already, so I suspect there is > some sort of policy around overlays already in place. Hi Emil, About the specific usage of overlay for this board + hat, referenced to the following example in kernel: linux/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dtso That board is connected with imx219 sensor via mipi_csi interface. That patch was accepted in 2022. So do you think this way is feasible ? Thanks! Best regards, Walker > >> Cheers, >> Conor. >> >> * https://lore.kernel.org/linux-riscv/mhng-775d4068-6c1e-48a4-a1dc-b4a76ff26bb3@palmer-ri-x1c9a/
