[PATCH 0/6] Expose RPi4'd bootloader configuration
robh+dt at kernel.org
Tue Dec 15 14:54:11 EST 2020
On Tue, Dec 15, 2020 at 1:01 PM Nicolas Saenz Julienne
<nsaenzjulienne at suse.de> wrote:
> Hi Catalin,
> On Tue, 2020-12-15 at 18:44 +0000, Catalin Marinas wrote:
> > On Tue, Dec 15, 2020 at 04:56:20PM +0100, Nicolas Saenz Julienne wrote:
> > > Soon to be released versions of RPi4's firmware will take of care
> > > passing their bootloader's configuration to the OS by copying it into
> > > memory and creating a reserved memory node in the board's DT. In order
> > > to make use of this information, this series introduces a new generic
> > > nvmem driver that maps reserved-memory nodes into nvmem devices.
> > >
> > > An alternative approach, less nice IMO, would be to create a
> > > platform-specific 'soc' driver.
> > What kind of information is this and how would the kernel use it?
> Sorry, I wasn't clear enough, the ultimate goal is to use this information from
> user-space, through nvmem's sysfs interface. The kernel itself has no use for
That still leaves the first question.
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