[ICL] SPI support

[quanxian]

Description:

Should be similar as in CNL.
Adding CSE DMA access capability to SPI and UART controller.

Target Release: 18.10
Target Kernel:4.19

[quanxian (quanxian-wang)]

Upstream Commit:
5926d79bc9f6 ("mfd: intel-lpss: Add Ice Lake PCI IDs")
4a2d25f0c165 ("spi: pxa2xx: Add support for Intel Ice Lake")

Need to check mainline when they merged.

[Joseph Salisbury (jsalisbury)]

Can we move this bug to the "Linux" package and make it public?

[quanxian (quanxian-wang)]

platform is not PV, just private. Thanks

[quanxian (quanxian-wang)]

Commit:22d71a5097ec
* master

 need backporting

[Joseph Salisbury (jsalisbury)]

I built a test kernel with commits a13c93b3a5db and 22d71a5097ec. The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1771248

Can you test this kernel and see if it resolves this bug?

Note about installing test kernels:
• If the test kernel is prior to 4.15(Bionic) you need to install the linux-image and linux-image-extra .deb packages.
• If the test kernel is 4.15(Bionic) or newer, you need to install the linux-modules, linux-modules-extra and linux-image-unsigned .deb packages.

Thanks in advance!

[quanxian (quanxian-wang)]

I am finding the test case from upstream to have a try.

[Joseph Salisbury (jsalisbury)]

Commit a13c93b3a will be applied to 18.10 via bug 1771245.

Commit 22d71a5097 is now in the Ubuntu-4.18.0-8 18.10 kernel via upstream stable updates.

[quanxian (quanxian-wang)]

testing with kernel image provide by Joseph, all passed.

Thanks Joseph!