topic Re: iMX6 PCIe for a beginner... in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/iMX6-PCIe-for-a-beginner/m-p/476190#M75559 <HTML><HEAD></HEAD><BODY><P>Please distinguish between root complex and endpoint drivers. What</P><P>pci-imx6.c implements is a root complex driver. It abstracts i.MX6</P><P>PCI hardware to the rest of the system allowing the standard kernel PCI</P><P>subsystem to work on i.MX6 platform. If you want to connect a custom</P><P>device to i.MX6, you neither need to re-implement the root complex driver,</P><P>nor to directly interact with it. PCI device drivers use platform-independent</P><P>Linux PCI subsystem services. It that sense, a correctly written PCI device driver</P><P>can operate on any supported hardware/platform/architecture, and any</P><P>PCI device driver can be taken as an example. For more details, refer</P><P>to i.MX Linux Reference Manual, Chapter 41 and to</P><P>Documentation/PCI/pci.txt.&nbsp; Section 41.4.2 of i.MX Linux Reference Manual</P><P>mentions some peripherals tested on i.MX reference boards, look at their</P><P>drivers first.</P><P></P><P></P><P><BR />Have a great day,<BR />Platon</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 08 Jan 2016 12:15:17 GMT bpe 2016-01-08T12:15:17Z iMX6 PCIe for a beginner... https://community.nxp.com/t5/i-MX-Processors/iMX6-PCIe-for-a-beginner/m-p/476189#M75558 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I need to learn PCIe for the iMX6Q to communicate with an FPGA, EIM is not an option here. I am looking for some help. I know that the Kernel needs to be configured and support needs to be added for the Freescale driver in the Kernel. Where I am having trouble is how do I interact with the Freescale driver; or do I need to write my own? When looking at the pcie-imx6.c file there seems to be a lot of chip specific information as well as the .compatible being setup for the device tree.</P><P>When reading articles on Linux PCIe driver development the way a driver a written is different from the pcie-imx6.c file. Is there a simple PCIe example for the iMX6 anywhere?</P><P></P><P>Again, any help is appreciated.</P></BODY></HTML> Thu, 07 Jan 2016 22:55:10 GMT https://community.nxp.com/t5/i-MX-Processors/iMX6-PCIe-for-a-beginner/m-p/476189#M75558 concerned12345 2016-01-07T22:55:10Z Re: iMX6 PCIe for a beginner... https://community.nxp.com/t5/i-MX-Processors/iMX6-PCIe-for-a-beginner/m-p/476190#M75559 <HTML><HEAD></HEAD><BODY><P>Please distinguish between root complex and endpoint drivers. What</P><P>pci-imx6.c implements is a root complex driver. It abstracts i.MX6</P><P>PCI hardware to the rest of the system allowing the standard kernel PCI</P><P>subsystem to work on i.MX6 platform. If you want to connect a custom</P><P>device to i.MX6, you neither need to re-implement the root complex driver,</P><P>nor to directly interact with it. PCI device drivers use platform-independent</P><P>Linux PCI subsystem services. It that sense, a correctly written PCI device driver</P><P>can operate on any supported hardware/platform/architecture, and any</P><P>PCI device driver can be taken as an example. For more details, refer</P><P>to i.MX Linux Reference Manual, Chapter 41 and to</P><P>Documentation/PCI/pci.txt.&nbsp; Section 41.4.2 of i.MX Linux Reference Manual</P><P>mentions some peripherals tested on i.MX reference boards, look at their</P><P>drivers first.</P><P></P><P></P><P><BR />Have a great day,<BR />Platon</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 08 Jan 2016 12:15:17 GMT https://community.nxp.com/t5/i-MX-Processors/iMX6-PCIe-for-a-beginner/m-p/476190#M75559 bpe 2016-01-08T12:15:17Z