diff options
Diffstat (limited to 'arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi index b833ba1e8f4a..98b5cd70bca5 100644 --- a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi @@ -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 */ |