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| author | Aaron Durbin <adurbin@chromium.org> | 2013-12-10 16:05:30 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-12-11 19:50:39 +0000 |
| commit | 1aa59b0ea545d571f24a64af71f412fb214e4f82 (patch) | |
| tree | 85420040088667c4bb25ee7cb41ca18447b6f0fb /firmware/lib/vboot_api_kernel.c | |
| parent | 31912b61a7c19515f5f5decae8ccad7b8e42f4cf (diff) | |
| download | vboot-1aa59b0ea545d571f24a64af71f412fb214e4f82.tar.gz | |
crossystem: handle BayTrail gpios
BayTrail systems have 3 banks of gpios. Therefore,
the Linux kernel exposes these 3 banks as 3 gpiochip
entries. The kernel driver expects the 3 banks to be
exposed with specific UIDs associated with a specific
banks. ChromeOS firmware maps gpios within a given
bank using the bank's MMIO offset. In summary:
Bank Type | UID | Offset
----------+-----+-------
SCORE | 1 | 0x0000
NCORE | 2 | 0x1000
SUS | 3 | 0x2000
BUG=chrome-os-partner:24408
BUG=chrome-os-partner:24324
BRANCH=None
TEST=Built. 'crossystem wpsw_cur' works correctly.
Change-Id: I251f86285ce9733f7ca90ed1ebef536f4fe5c07c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/179513
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'firmware/lib/vboot_api_kernel.c')
0 files changed, 0 insertions, 0 deletions