ARM: dts: rockchip: Configure BT_DEV_WAKE in on rk3288-veyron

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This is the other half of the hacky solution from commit f497ab6b4b
("ARM: dts: rockchip: Configure BT_HOST_WAKE as wake-up signal on
veyron").  Specifically the LPM driver that the Broadcom Bluetooth
expects to have (but is missing in mainline) has two halves of the
equation: BT_HOST_WAKE and BT_DEV_WAKE.  The BT_HOST_WAKE (which was
handled in the previous commit) is the one that lets the Bluetooth
wake the system up.  The BT_DEV_WAKE (this patch) tells the Bluetooth
that it's OK to go into a low power mode.  That means we were burning
a bit of extra power in S3 without this patch.  Measurements are a bit
noisy, but it appears to be a few mA worth of difference.

NOTE: Though these pins don't do much on systems with Marvell
Bluetooth, downstream kernels set it on all veyron boards so we'll do
the same.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

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This commit is contained in:

Douglas Anderson 2019-06-19 11:34:25 -07:00 • committed by Heiko Stuebner

parent f497ab6b4b

commit 4db11c378a

2 changed files with 22 additions and 0 deletions

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arch/arm/boot/dts/rk3288-veyron-chromebook.dtsi

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arch/arm/boot/dts/rk3288-veyron.dtsi

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