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-rw-r--r--Documentation/devicetree/bindings/net/mediatek-bluetooth.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
index 41a7dcc80f5b..112011c51d5e 100644
--- a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
+++ b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
@@ -50,16 +50,33 @@ Required properties:
"mediatek,mt7663u-bluetooth": for MT7663U device
"mediatek,mt7668u-bluetooth": for MT7668U device
- vcc-supply: Main voltage regulator
+
+If the pin controller on the platform can support both pinmux and GPIO
+control such as the most of MediaTek platform. Please use below properties.
+
- pinctrl-names: Should be "default", "runtime"
- pinctrl-0: Should contain UART RXD low when the device is powered up to
enter proper bootstrap mode.
- pinctrl-1: Should contain UART mode pin ctrl
+Else, the pin controller on the platform only can support pinmux control and
+the GPIO control still has to rely on the dedicated GPIO controller such as
+a legacy MediaTek SoC, MT7621. Please use the below properties.
+
+- boot-gpios: GPIO same to the pin as UART RXD and used to keep LOW when
+ the device is powered up to enter proper bootstrap mode when
+- pinctrl-names: Should be "default"
+- pinctrl-0: Should contain UART mode pin ctrl
+
Optional properties:
- reset-gpios: GPIO used to reset the device whose initial state keeps low,
if the GPIO is missing, then board-level design should be
guaranteed.
+- clocks: Should be the clock specifiers corresponding to the entry in
+ clock-names property. If the clock is missing, then board-level
+ design should be guaranteed.
+- clock-names: Should contain "osc" entry for the external oscillator.
- current-speed: Current baud rate of the device whose defaults to 921600
Example: