Hi Anderson,
On 2019-01-17 10:10, Bjorn Andersson wrote:
The SDM845 MTP has a WCN3990 Bluetooth chip on UART6, enable this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 44 +++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index af8c6a2445a2..f65d5a674103 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -17,6 +17,7 @@
aliases {
serial0 = &uart9;
+ hsuart0 = &uart6;
};
chosen {
@@ -357,6 +358,10 @@
clock-frequency = <400000>;
};
+&qupv3_id_0 {
+ status = "okay";
+};
+
&qupv3_id_1 {
status = "okay";
};
@@ -373,6 +378,20 @@
cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
};
+&uart6 {
+ status = "okay";
+
+ bluetooth {
+ compatible = "qcom,wcn3990-bt";
+
+ vddio-supply = <&vreg_s4a_1p8>;
+ vddxo-supply = <&vreg_l7a_1p8>;
+ vddrf-supply = <&vreg_l17a_1p3>;
+ vddch0-supply = <&vreg_l25a_3p3>;
+ max-speed = <3200000>;
+ };
+};
+
&uart9 {
status = "okay";
};
@@ -470,6 +489,31 @@
};
};
+&qup_uart6_default {
+ pinmux {
+ pins = "gpio45", "gpio46", "gpio47", "gpio48";
+ function = "qup6";
+ };
+
+ ctsrx {
+ pins = "gpio45", "gpio48";
+ drive-strength = <2>;
+ bias-no-pull;
+ };
+
+ rts {
+ pins = "gpio46";
+ drive-strength = <2>;
+ bias-pull-down;
+ };
+
+ tx {
+ pins = "gpio47";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+};
+
&qup_uart9_default {
pinconf-tx {
pins = "gpio4";
[Bala]:
GPIO 45 is CTS
GPIO 46 is RTS
GPIO 47 is Tx
GPIO 48 is Rx.
Tx & RTS are inputs to APPS processor, bias should be disable as
the source i.e. BT chip will pull them up.
CTS & RX are outputs from APPS processor, where as CTS is GPIO
which need to toggled, so the default state should be pull down.
RX is should be pulled up.
when TX & RX are pulled high it indicates that the lines are
ideal i.e. no data.
Above is just my assumption, not sure whether they work on MTP.
--
Regards
Balakrishna.
