[PATCH v3 9/9] dt-bindings: serial: stm32: add phandle 'bluetooth' to fix dtbs_check warrning

[dillon.minfei at gmail.com]

From: dillon min <dillon.minfei at gmail.com>

when run make dtbs_check with 'bluetoothi brcm,bcm43438-bt'
dts enabled on stm32h7, there is a warrning popup:

>> arch/arm/boot/dts/stm32h750i-art-pi.dt.yaml: serial at 40004800: 'bluetooth'
   does not match any of the regexes: 'pinctrl-[0-9]+'

to make dtbs_check happy, so add a phandle bluetooth

Fixes: 500cdb23d608 ("ARM: dts: stm32: Add STM32H743 MCU and STM32H743i-EVAL board")
Signed-off-by: dillon min <dillon.minfei at gmail.com>
Reported-by: kernel test robot <lkp at intel.com>
---
 Documentation/devicetree/bindings/serial/st,stm32-uart.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
index 8631678283f9..5e674840e62d 100644
--- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
@@ -50,6 +50,11 @@ properties:
     minItems: 1
     maxItems: 2
 
+  bluetooth:
+    type: object
+    description: |
+      phandles to the usart controller and bluetooth
+
 # cts-gpios and rts-gpios properties can be used instead of 'uart-has-rtscts'
 # or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow
 # control instead of dedicated pins.
-- 
1.9.1