Carolyn, It contains 0x40000960. Yes we did change the code to clear LVDSCLK2_IBEN and then set the LVDS_CLK2 to SATA then set LVDSCLK2_OBEN.
BTW, I made a mistake in the binary value to select SATA in the message below. It should be 01011b. Regards, Greg Topmiller Staff Software Engineer 240-404-2620 greg.topmil...@jdsu.com From: Carolyn Smith [mailto:carolynsm...@gmail.com] Sent: Wednesday, November 07, 2012 3:03 PM To: Greg Topmiller Cc: Fabio Estevam (feste...@gmail.com); u-boot@lists.denx.de Subject: Re: PCIe on the i.MX6? 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? >> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot