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Subject[PATCH 0/3] i.MX7 PCI support
Date
Hello, everyone:

This is a small patchset intended to add PCI-subsystem bits necessary
for enabling PCI support on i.MX7. This patchset is not
self-sufficient and depends on three other patchsets:

- Changes to anatop regulator driver
- Chagnes to i.MX device tree code pertaining to anatop regulator
- Changes to i.MX device tree pertaining to PCIe controller

I submitted first two in [1] and [2], and, unless adwised otherwise,
am planning on submitting the last one once [1], [2] and this patchset
are accepted.

This patch was tested against i210 card on i.MX7 Sabre board
(connected via mini-PCIe to PCIe adapter) with general functionality
and bandwidth tests.

Note that this patchset have known "blemish" where Gen1 cards (at
least) report this message:

imx6q-pcie 33800000.pcie: Speed change timeout
imx6q-pcie 33800000.pcie: Failed to bring link up!

due to hardware not clearing PORT_LOGIC_SPEED_CHANGE bit after speed
change is requested, but since this does not seem to affect the
functioning of the link I am hoping this is not a deal breaker.

I posted a question on NXP community web-site [3] hoping to get some
additional info to help resolve the matter and if anyone has any
suggestions I'd love to hear them.

Thanks,
Andrey Smirnov

[1] https://www.spinics.net/lists/arm-kernel/msg553215.html
[2] https://www.spinics.net/lists/kernel/msg2418471.html
[3] https://community.nxp.com/message/867943

Andrey Smirnov (3):
PCI: imx6: Fix a typo in error message
PCI: imx6: Allow probe deferal by reset GPIO
PCI: imx6: Add code to support i.MX7D

.../devicetree/bindings/pci/fsl,imx6q-pcie.txt | 6 +-
drivers/pci/host/pci-imx6.c | 197 ++++++++++++++++++---
include/linux/mfd/syscon/imx7-gpc.h | 18 ++
include/linux/mfd/syscon/imx7-iomuxc-gpr.h | 4 +
include/linux/mfd/syscon/imx7-src.h | 18 ++
5 files changed, 214 insertions(+), 29 deletions(-)
create mode 100644 include/linux/mfd/syscon/imx7-gpc.h
create mode 100644 include/linux/mfd/syscon/imx7-src.h

--
2.9.3

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