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authorKarthikeyan Ramasubramanian <kramasub@google.com>2021-10-08 17:04:10 -0600
committerFelix Held <felix-coreboot@felixheld.de>2021-10-14 13:10:17 +0000
commitd086e3d6e42036b1ec0fc2173db5386279ac838b (patch)
tree6ce0defd0eb24c53830f98fbf00d8ed895499967 /src/lib/gnat/COPYING.RUNTIME
parente7f43502b540a42f23a967b6206370050ef75f23 (diff)
mb/google/guybrush: Assert WWAN_AUX_RST_L on S0i3 entry
Currently WWAN_AUX_RST_L is in S5 domain and does not get asserted on S0i3 entry. Based on the schematics, the pull-down on that signal leads to 10 mW power leakage on S0i3 entry. Assert the signal on S0i3 entry to achieve some power savings and de-assert it on S0i3 exit. BUG=b:195748540 TEST=Build and boot to OS in Guybrush. Ensure that the signal gets asserted on S0i3 entry and de-asserted on S0i3 exit. Trigger suspend/resume cycles and ensure that the WWAN module is enumerated after each cycle. Change-Id: I43c8655ee5209779748e4365db973e094cb08aca Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/58275 Reviewed-by: Raul Rangel <rrangel@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/lib/gnat/COPYING.RUNTIME')
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