Re: [PATCH v3 04/09] iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE()

From: Geert Uytterhoeven
Date: Wed Mar 08 2017 - 08:56:25 EST

Hi Magnus,

On Wed, Mar 8, 2017 at 12:02 PM, Magnus Damm <magnus.damm@xxxxxxxxx> wrote:
> From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
> Hook up IOMMU_OF_DECLARE() support in case CONFIG_IOMMU_DMA
> is enabled. The only current supported case for 32-bit ARM
> is disabled, however for 64-bit ARM usage of OF is required.
> Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx

While I'm not such a big fan of *_OF_DECLARE() (it doesn't support deferred
probing, which is needed for any device with dependencies, like clocks and
power domains), what's the rationale for not using IOMMU_OF_DECLARE()
on arm32, and thus the need for setup_done?



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds