Wandboard PCIE support

anjojohn — Tue, 23 Jan 2018 13:04:24 GMT

Hi all
i have a wandboard with EDM1-IMX6-sd REV A1 som board. i just need to enable the PCIE support in kernel config and dtb . this is for interfacing a WiFi card with PCIE support. From WiFi card PCIE TX, RX, CLK and PCI_RST lines are connected. PCI_CLK_RQT and PCI_WAKE aren't connected.
For dtb i tried following change
+&pcie {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pcie>;
+ reset-gpio = <&gpio3 31 1>;
+ status = "okay";
+};
for kernel defconfig followed the Linux reference manual 4.1.15
#
# Bus support
#
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_SYSCALL=y
CONFIG_PCI_MSI=y
#
# PCI host controller drivers
#
CONFIG_PCIE_DW=y
CONFIG_PCI_IMX6=y

But when boots up kernel print shows
imx6q-pcie 1ffc000.pcie: phy link never came up
imx6q-pcie 1ffc000.pcie: DEBUG_R0: 0x00023600, DEBUG_R1: 0x08200000
imx6q-pcie 1ffc000.pcie: failed to initialize host
imx6q-pcie: probe of 1ffc000.pcie failed with error -22

i also tried the kernel configuration suggested in http://forums.wandboard.org/viewtopic.php?f=8&t=902, still same prints.
Is i am missing anything in kernel configuration ? Please suggest, any help is welcomed

Re: Wandboard PCIE support

gusarambula — Tue, 23 Jan 2018 20:37:06 GMT

Hello Anjo John,

I would recommend you posting your question on Wandboard forums as well, as there may be more users with valuable input there.

wandboard, would you please let us know if there’s any suggestion for PCIE support on this board?

Regards,

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Wandboard PCIE support

Re: Wandboard PCIE support