5 Jun
2017
5 Jun
'17
11:31 p.m.
On 31 May 2017 at 10:17, Philipp Tomsich philipp.tomsich@theobroma-systems.com wrote:
On the RK3399-Q7, the on-module USB3 hub is held in reset at boot-up to save power and needs to be woken up using GPIO4A3.
Note that this is not a negated reset-signal (due to a level shifter being needed for this signal anyway), but a negated enable-signal: to enable, we need to output LOW (i.e. 0)... so we mark this as an ACTIVE_LOW signal.
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com
arch/arm/dts/rk3399-puma.dts | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org
Applied to u-boot-rockchip, thanks!