On Wed, 2018-10-10 at 14:26 -0500, Rob Herring wrote: > 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: > > https://lore.kernel.org/lkml/20181010170936.316862-1-lkundrak@xxxxx/T/#t > > > > 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. The /proc/device-tree tarball: http://v3.sk/~lkundrak/olpc/xo1.tar (Mirror: https://people.freedesktop.org/~lkundrak/olpc/xo1.tar) My distro's dtc crashes with this (could be related to your recent dtc fixes), the git tip needs -f to work around some funny property names. I figure a raw data as opposed to a dts/dtb dump would be a better idea. Also, there's no phandles, so it's of rather limited use. If you need those, then I can share a dump directly from ofw instead or patch the kernel to fabricate and expose the phandle properties. This is with the latest firmware. I guess the exact version is somewhere within the device tree. > > Rob Cheers Lubo
