Re: [PATCH 2/2] ARM: dts: USB for Tegra114 Dalmore

From: Sergei Shtylyov
Date: Thu Aug 01 2013 - 08:37:51 EST


On 01-08-2013 3:29, Stephen Warren wrote:

Don't they cause numerous resource conflicts while device nodes
instantiated as the platform devices?

No; the driver knows that the HW is screwy and there's lots of
register-range sharing going on, so it simply maps the registers, rather
than reserving the physical address range and mapping it.

Yes, it's clear that the driver should take special measures, I was
asking about the platform device creation phase. What do you see in

The drivers don't request the memory region since doing so would cause
conflicts. Hence, the regions don't show up in /proc/iomem.

Regions should show up after the platform device registration. They just show up as subregions of those when you request them. That's why I asked for your /proc/iomem.

WBR, Sergei

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