Am Freitag, den 16.01.2015, 18:38 +0800 schrieb Sean Cross: > On 16/01/2015 08:46, Bjorn Helgaas wrote: > > On Mon, Dec 22, 2014 at 04:32:03PM +0800, Sean Cross wrote: > >> The Kosagi Novena mainboard contains an i.MX6, along with a PCI Express slot. > >> This patchset adds regulator support to the PCI Express slot, and adds > >> device tree support for the Novena mainboard. > >> > >> Changes since v1: > >> - Add 'kosagi' to vendor prefixes > >> - Add LCD panel to simple-panel > >> - Renamed power-supply to bus-supply > >> - Replaced devm_regulator_get() with devm_regulator_get_optional() > >> - Moved regulator_enable to imx6_add_pcie_port() > >> - Removed fpga@1 from spi definition in dts -- will use overlays instead > >> > >> Sean Cross (4): > >> drm/panel: simple: Add Innolux N133HSE panel support > >> devicetree: bindings: Add vendor prefix for Kosagi > >> PCI: imx6: Add power-supply support > > I guess we're waiting on a response to Arnd's question about making this > > more generic, so I'm dropping these from my queue pending that. > > > > Then we need a strategy for merging it since it crosses PCI/ARM/GPU. > > Please propose a strategy; it looks like the PCI part doesn't technically > > depend on the preceeding patches, but it's fine with me if you want to keep > > it all together. > > > The PCI part was there because without it, the system hard-locks during > boot without it. > > However, I'm not sure that the power-supply is the correct approach, > because I can still see lockups even with the switch in place. I still > haven't found out the root cause of that problem. > > One workaround is to simply enable that GPIO in the bootloader and leave > it on permanently. Doing this mimics behavior on other platforms where > PCIe is permanently powered up, and since the patches are decoupled the > PCI patch can be applied at a later time. > > I'd prefer to drop the PCI patch for now. Would you like me to submit a > v3 with simply the drm/panel and devicetree patches? > Please keep the PCIe supply regulator in your DT, but just mark it always-on. I looked into moving the bus-supply into the common designware driver, but that needs some more work. I'll send out a series for this in the next days. We can then always hook up the regulator properly after this is done. Please wait a bit until sending V3, I want to have another look at the V2 novena DT. Regards, Lucas -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
