mbox series

[U-Boot,v3,0/3] fix apalis_t30 optional pcie operation

Message ID 20180426133839.32368-1-marcel@ziswiler.com
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Series fix apalis_t30 optional pcie operation | expand

Message

Marcel Ziswiler April 26, 2018, 1:38 p.m. UTC 
This series addresses a PCIe reliability issue as observed on Apalis T30
related to a PCIe reset timing violation.

This series is available at http://git.toradex.com/cgit/u-boot-toradex.git/log/?h=for-next

Changes in v3:
- Updated copyright period to 2014-2018.
- Added a blank line after declarations as warned by patman.
- Added Stephen's acked-by.
- Rebased and resend as series so far never got applied!

Changes in v2:
- Leave resp. enable all port 0 pins input drivers as a customer may
  optionally want to use some of those MXM3 pins as inputs as well.
- Stick to struct tegra_pcie_port as suggested by Stephen.
- Introduce proper CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT Kconfig option
  as suggested by Stephen.
- Improved the ifdef vs. if curly braces sequencing as suggested by
  Stephen.
- Keep PCIe port reset status in order to safeguard for future changes
  to the port reset order or even allow for re-initialisation should
  that ever be implemented in the higher levels of the driver model.

Marcel Ziswiler (3):
  apalis_t30: describe pcie ports
  apalis_t30: fix pcie port 0 and 1 pin muxing
  apalis_t30: fix optional pcie port reset for reliable pcie operation

 arch/arm/dts/tegra30-apalis.dts                    |  3 ++
 board/toradex/apalis_t30/Kconfig                   |  9 ++++
 board/toradex/apalis_t30/apalis_t30.c              | 57 +++++++++++++++++++++-
 .../toradex/apalis_t30/pinmux-config-apalis_t30.h  | 16 +++---
 4 files changed, 77 insertions(+), 8 deletions(-)