** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1677319
Title:
Support low-pin-count devices on Hisilicon SoCs
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Bug description:
[Impact]
The HiSilicon Hip06/Hip07 SoCs include a low-pin-count (LPC) host controller.
The Linux kernel needs support for this interface to use attached devices, such
as a UART and the IPMI system interface.
[Test Case]
Boot up a HiSilicon D05 system, confirm that the following command returns
w/o error:
$ sudo ipmitool lan print
[Regression Risk]
The proposed patchset only enables LIBIO for arm64, so the greatest
regression risk is to other arm64 systems. We have mitigated that by testing on
a wide range of hardware (all certified arm64 servers + some in-devel systems).
There remains some arch-independent changes to the generic PCI code. The patch
"PCI: Restore codepath for !CONFIG_LIBIO" was added to mitigate the risk to
other architectures by restoring the previous code for those architectures.
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