spi: Add Qualcomm QUP SPI controller driver

This patch adds support for the Qualcomm QUP SPI controller that is commonly found in most of Qualcomm SoC-s.

Driver currently supports v1.1.1, v2.1.1 and v2.2.1 HW.
FIFO and Block modes are supported, no support for DMA mode is planned.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
5 files changed