diff options
| -rw-r--r-- | arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi | 23 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi | 23 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/qcom/msm8998-pins.dtsi | 25 |
3 files changed, 67 insertions, 4 deletions
diff --git a/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi b/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi index 0f84fa0894a4..b3cf263f4a00 100644 --- a/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi @@ -301,3 +301,26 @@ vdd-1.3-rfa-supply = <&vreg_l17a_1p3>; vdd-3.3-ch0-supply = <&vreg_l25a_3p3>; }; + +/* PINCTRL - board-specific pinctrl */ +&blsp1_uart3_on { + rx { + /delete-property/ bias-disable; + /* + * Configure a pull-up on 45 (RX). This is needed to + * avoid garbage data when the TX pin of the Bluetooth + * module is in tri-state (module powered off or not + * driving the signal yet). + */ + bias-pull-up; + }; + + cts { + /delete-property/ bias-disable; + /* + * Configure a pull-down on 47 (CTS) to match the pull + * of the Bluetooth module. + */ + bias-pull-down; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi b/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi index 1220756fb5b3..6835fbd9636e 100644 --- a/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi @@ -373,3 +373,26 @@ vdd-1.3-rfa-supply = <&vreg_l17a_1p3>; vdd-3.3-ch0-supply = <&vreg_l25a_3p3>; }; + +/* PINCTRL - board-specific pinctrl */ +&blsp1_uart3_on { + rx { + /delete-property/ bias-disable; + /* + * Configure a pull-up on 45 (RX). This is needed to + * avoid garbage data when the TX pin of the Bluetooth + * module is in tri-state (module powered off or not + * driving the signal yet). + */ + bias-pull-up; + }; + + cts { + /delete-property/ bias-disable; + /* + * Configure a pull-down on 47 (CTS) to match the pull + * of the Bluetooth module. + */ + bias-pull-down; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/msm8998-pins.dtsi b/arch/arm64/boot/dts/qcom/msm8998-pins.dtsi index e32d3ab395ea..7c222cbf19d9 100644 --- a/arch/arm64/boot/dts/qcom/msm8998-pins.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8998-pins.dtsi @@ -77,13 +77,30 @@ }; blsp1_uart3_on: blsp1_uart3_on { - mux { - pins = "gpio45", "gpio46", "gpio47", "gpio48"; + tx { + pins = "gpio45"; function = "blsp_uart3_a"; + drive-strength = <2>; + bias-disable; }; - config { - pins = "gpio45", "gpio46", "gpio47", "gpio48"; + rx { + pins = "gpio46"; + function = "blsp_uart3_a"; + drive-strength = <2>; + bias-disable; + }; + + cts { + pins = "gpio47"; + function = "blsp_uart3_a"; + drive-strength = <2>; + bias-disable; + }; + + rfr { + pins = "gpio48"; + function = "blsp_uart3_a"; drive-strength = <2>; bias-disable; }; |