tree 69990d529cbc8094f2a8716019be5230d0b0a7ff
parent 9a0ff5d78c3415d817bf2992ef664ccf70d280e9
author William Zhang <william.zhang@broadcom.com> 1686181025 -0700
committer Jagan Teki <jagan@edgeble.ai> 1689236997 +0530

spi: bcmbca-hsspi: Add driver for newer HSSPI controller

The newer BCMBCA SoCs such as BCM6756, BCM4912 and BCM6855 include an
updated SPI controller that add the capability to allow the driver to
control chip select explicitly. Driver can control and keep cs low
between the transfers natively. Hence the dummy cs workaround or prepend
mode found in the bcm63xx-hsspi driver are no longer needed and this new
driver is much cleaner.

Port from linux patch:
Link: https://lore.kernel.org/r/20230209200246.141520-15-william.zhang@broadcom.com
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>