Dne 20.8.2015 v 12:55 Tomi Valkeinen napsal(a): > > > On 08/08/15 21:20, Petr Cvek wrote: > >> diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig >> index 2d98de5..8f485ec 100644 >> --- a/drivers/video/fbdev/Kconfig >> +++ b/drivers/video/fbdev/Kconfig >> @@ -1893,6 +1893,11 @@ config FB_PXA_OVERLAY >> bool "Support PXA27x/PXA3xx Overlay(s) as framebuffer" >> default n >> depends on FB_PXA && (PXA27x || PXA3xx) >> + ---help--- >> + Using the overlay 2 and YUV420 mode on a PXA27x C0 chip revision will >> + hang the LCD until the next SoC restart (errata E24). > > Shouldn't the driver handle this? It should not allow the combination to > be used. > > Tomi > Probably, but I don't know which revisions are OK and which are not. Errata document: Marvell® PXA270M Processor Specification Update MV-S900957-00 has only 3 revisions, but PXA Manual lists 6 (2.2.5.1 Processor ID Register) and one revision from errata is not shown in my PXA Manual. I can exclude mine revision (from "system_rev" variable), but there should be some warning somewhere in configuration. BTW There is software workaround, but I was not able to set registers right (it requires to send some data through FIFO in different mode). Petr -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
