[PATCH v4 08/13] iommu/rockchip: Control clocks needed to access the IOMMU

JeffyChen jeffy.chen at rock-chips.com
Sun Jan 21 20:09:30 PST 2018

Hi Randy,

On 01/22/2018 10:15 AM, JeffyChen wrote:
> Hi Randy,
> On 01/22/2018 09:18 AM, Randy Li wrote:
>> Also the power domain driver could manage the clocks as well, I would
>> suggest to use pm_runtime_*.
> actually the clocks required by pm domain may not be the same as what we
> want to control here, there might be some clocks only be needed when
> accessing mmu registers.
> but i'm not very sure about that, will confirm it with Simon Xue.

confirmed with Simon, there might be some iommus don't have a pd, and 
the CONFIG_PM could be disabled.

so it might be better to control clocks in iommu driver itself.

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