Re: [PATCH 0/15] Add support for OLPC XO 1.75 Embedded Controller

From: Rob Herring
Date: Wed Oct 10 2018 - 15:26:55 EST

On Wed, Oct 10, 2018 at 12:23 PM Lubomir Rintel <lkundrak@xxxxx> wrote:
> Hi.
> This patchset adds support for the Embedded Controller on an OLPC XO
> 1.75 machine. OLPC XO 1.75 is a MMP2 based ARM laptop. It plugs into
> the existing OLPC platform infrastructure, currently used by the x86
> based models.
> The EC operates in SPI master mode, meaning the SOC is the SPI slave. It
> uses extra handshake signal to signal readiness of SOC to accept data
> from EC and to initiate a transaction if SOC wishes to submit data.
> The SPI slave support for MMP2 was submitted separately:
> THe "power: supply: olpc_battery: correct the temperature" patch was
> already sent out separately, but I'm including it because the last
> commit of the set depends on it.
> Tested to work on an OLPC XO 1.75 and also tested not to break x86
> support with an OLPC XO 1 machine. I don't have a XO 1.5, but it's
> unlikely this breaks it when XO 1 works.

I asked this on the OLPC devel list recently, but I don't think my
message ever got past the moderator. Could you generate a DT dump from
/proc/device-tree of an XO 1 and send to me? I have some DT changes
planned and need to see if they'd be okay for x86 OLPC.