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[RESEND,0/2] Enable SPI on A64/Pine64

Message ID 20170829202652.5476-1-stefan.bruens@rwth-aachen.de
Headers show
Series Enable SPI on A64/Pine64 | expand

Message

Stefan Brüns Aug. 29, 2017, 8:26 p.m. UTC 
The A64 SPI controller is compatible to the H3/H5 controller, i.e. same
registers and same queue depth.

The Pine64 exposes both controllers on the PI-2 and Euler connectors.

Tested/verified with logic analyser and spidev_test using MOSI/MISO loopback.

Note: spi0 on the A64 may conflict with the eMMC controller, as the MISO pin is
also used for the HS400 eMMC data strobe. This is only a concern if the board
uses eMMC (does not apply to the Pine64) *and* is using HS400 mode. The same
pin conflict exists for the H5.

Stefan Brüns (2):
  arm64: allwinner: a64: add SPI nodes
  arm64: allwinner: pine64: Enable spi0/spi1

 .../arm64/boot/dts/allwinner/sun50i-a64-pine64.dts |  8 +++++
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi      | 40 ++++++++++++++++++++++
 2 files changed, 48 insertions(+)