From: Dylan Van Assche <me@xxxxxxxxxxxxxxxxx>
Add hsuart0 alias, firmware name and prevent garbage data on Bluetooth UART lines
on the SHIFT 6mq based on the Qualcomm SDM845 chip.
I discovered that these were missing by comparing the DTS with similar
devices such as the Oneplus 6/6T and Dragonboard 845c.
Signed-of-by: Dylan Van Assche <me@xxxxxxxxxxxxxxxxx>
Tested-by: Alexander Martinz <amartinz@xxxxxxxxxxxxxxx>
---
.../boot/dts/qcom/sdm845-shift-axolotl.dts | 33 +++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index 103cc40816fd..fa72f23ef0c2 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -20,6 +20,7 @@ / {
aliases {
display0 = &framebuffer0;
+ hsuart0 = &uart6;
serial0 = &uart9;
};
@@ -529,6 +530,32 @@ volume_down_resin: resin {
};
};
+/*
+ * Prevent garbage data on bluetooth UART lines
+ */
+&qup_uart6_default {
+ pinmux {
+ pins = "gpio45", "gpio46", "gpio47", "gpio48";
+ function = "qup6";
+ };
+
+ cts {
+ pins = "gpio45";
+ bias-pull-down;
+ };
+
+ rts-tx {
+ pins = "gpio46", "gpio47";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ rx {
+ pins = "gpio48";
+ bias-pull-up;
+ };
+};
+
&qup_uart9_default {
pinconf-rx {
pins = "gpio5";
@@ -667,6 +694,12 @@ &uart6 {
bluetooth {
compatible = "qcom,wcn3990-bt";
+ /*
+ * This path is relative to the qca/
+ * subdir under lib/firmware.
+ */
+ firmware-name = "axolotl/crnv21.bin";
+
vddio-supply = <&vreg_s4a_1p8>;
vddxo-supply = <&vreg_l7a_1p8>;
vddrf-supply = <&vreg_l17a_1p3>;
--
2.36.1
