Hi Greg, What is the exact value of your PMU_MISC1 register? Did you change the code to clear LVDSCLK2_IBEN and set LVDSCLK2_OBEN as well?
We haven't tried a PCIe switch. We just have an FPGA directly connected to the i.MX6. Thanks, Carolyn On Wed, Nov 7, 2012 at 8:38 AM, Greg Topmiller <greg.topmil...@jdsu.com>wrote: > Hi Carolyn, > > I saw your message on the Denx mailing list. > > I have the Novpek board with the MX6 quad on it and a full PCIe interface. > I am working in the Freescale Linux kernel and to get the interface to > work we had to change a clock source for the PCIe. We had to use the LVDS2 > as SATA clock source rather than LVDS1 as SATA. This is controlled by the > PMU_MISC1 register at offset 0x20c8160. In the reference manual it's > section 49.7.6, page 4413. Set the LVDS2_CLK_SEL (bits 9-5) field to SATA > (010011b). The original code set LVDS1_CLK_SEL (bits 4-0) to > SATA(010011b). Hope this helps. > > Our current problem is getting a PCIe switch to work with the MX6. The > upstream port config space is available but the down stream is not. > 0x1f00000 is exposed as the upstream config space but I expected the down > stream to be at 0x1f10000 but nothing there. Let me know if you have any > ideas. Have you tried a PCIe switch yet? > > Thanks, > > Greg Topmiller > Staff Software Engineer > 240-404-2620 <#> > greg.topmil...@jdsu.com > > > >Yes, I have the PCI clocks on. I can read the config space and can see the > >PCIe bus traffic using a logic analyzer when I do so. When I try reading > >memory or I/O space, I don't see any bus traffic. > > > >Thanks, > >Carolyn > > > >On Thu, Nov 1, 2012 at 11:18 AM, Fabio Estevam <festevam at gmail.com> > wrote: > > > >> On Thu, Nov 1, 2012 at 2:32 PM, Carolyn Smith <carolynsmi56 at > gmail.com> > >> wrote: > >> > Hello, > >> > > >> > Does anyone have any experience with PCIe on an i.MX6 processor (in > >> > particular the i.MX6 Solo)? > >> > > >> > I can access the config space of my PCIe device but can't seem to get > its > >> > BARs mapped in properly. I thought I had the viewports set up but > when I > >> > try to access the space, I just get a processor lockup. > >> > >> Have you turned on the PCI clocks? > >> >
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