mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
arm64: dts: qcom: sc7280-qcard: Configure CTS pin to bias-bus-hold for bluetooth
WLAN rail was leaking power during RBSC/sleep even after turning BT off. Change active and sleep pinctrl configurations to handle same. Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/1650556567-4995-3-git-send-email-quic_vnivarth@quicinc.com
This commit is contained in:
parent
497b272759
commit
3d0e375bae
@ -398,8 +398,14 @@ mos_bt_uart: &uart7 {
|
||||
|
||||
/* For mos_bt_uart */
|
||||
&qup_uart7_cts {
|
||||
/* Configure a pull-down on CTS to match the pull of the Bluetooth module. */
|
||||
bias-pull-down;
|
||||
/*
|
||||
* Configure a bias-bus-hold on CTS to lower power
|
||||
* usage when Bluetooth is turned off. Bus hold will
|
||||
* maintain a low power state regardless of whether
|
||||
* the Bluetooth module drives the pin in either
|
||||
* direction or leaves the pin fully unpowered.
|
||||
*/
|
||||
bias-bus-hold;
|
||||
};
|
||||
|
||||
/* For mos_bt_uart */
|
||||
@ -490,10 +496,13 @@ mos_bt_uart: &uart7 {
|
||||
pins = "gpio28";
|
||||
function = "gpio";
|
||||
/*
|
||||
* Configure a pull-down on CTS to match the pull of
|
||||
* the Bluetooth module.
|
||||
* Configure a bias-bus-hold on CTS to lower power
|
||||
* usage when Bluetooth is turned off. Bus hold will
|
||||
* maintain a low power state regardless of whether
|
||||
* the Bluetooth module drives the pin in either
|
||||
* direction or leaves the pin fully unpowered.
|
||||
*/
|
||||
bias-pull-down;
|
||||
bias-bus-hold;
|
||||
};
|
||||
|
||||
/* For mos_bt_uart */
|
||||
|
Loading…
Reference in New Issue
Block a user