the following patch was just integrated into master: commit 68ec2fce2bcf0f9d8f02d80feb4d6bc4385e9047 Author: David Hendricks dhendrix@chromium.org Date: Fri Jul 25 12:59:48 2014 -0700
ipq806x: Break apart large transfers in spi_xfer()
The current spi_xfer() function sets the count in hardware and then loops while waiting for the requested number of bytes to be sent or received. However, the number of bytes to be transferred may exceed the maximum count that can be programmed into the controller.
This patch re-factors spi_xfer() to split the low-level FIFO handling portions for transmit/receive into their own functions to be called by loops in spi_xfer() which will break large transfers into smaller ones.
BUG=chrome-os-partner:30904 BRANCH=storm TEST=built and booted with a >64KB payload on Storm
Original-Change-Id: I70743487996cf08cfc602449f2181a7fcd99bfa4 Original-Signed-off-by: David Hendricks dhendrix@chromium.org Original-Signed-off-by: Vadim Bendebury vbendeb@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/209838 Original-Reviewed-by: Trevor Bourget tbourget@codeaurora.org Original-Tested-by: Trevor Bourget tbourget@codeaurora.org (cherry picked from commit 5ec28de11f12c2438356f45ce978a17fbb603bf7) Signed-off-by: Marc Jones marc.jones@se-eng.com
Change-Id: I0033e0dd96006cfd30a7a4f5e5a052f677e05108 Reviewed-on: http://review.coreboot.org/8676 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer stefan.reinauer@coreboot.org
See http://review.coreboot.org/8676 for details.
-gerrit