Messages in this thread | | | Subject | Re: [PATCH v5 2/3] dt-bindings: net: bluetooth: Add qualcomm-bluetooth | From | Marcel Holtmann <> | Date | Tue, 20 Mar 2018 16:58:25 +0100 |
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Hi Thierry,
> Add binding document for serial bluetooth chips using Qualcomm protocol. > > Signed-off-by: Thierry Escande <thierry.escande@linaro.org> > --- > > v5: > - Rename 'bt-disable-n' gpio as 'enable' > > v4: > - Move bt-disable-n-gpios to required properties section > - Add clocks and pinctrl-0 as required properties > > v3: no change > v2: no change > > .../devicetree/bindings/net/qualcomm-bluetooth.txt | 34 ++++++++++++++++++++++ > 1 file changed, 34 insertions(+) > create mode 100644 Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt > > diff --git a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt > new file mode 100644 > index 000000000000..bbc2973634b2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt > @@ -0,0 +1,34 @@ > +Qualcomm Bluetooth Chips > +--------------------- > + > +This documents the binding structure and common properties for serial > +attached Qualcomm devices. > + > +Serial attached Qualcomm devices shall be a child node of the host UART > +device the slave device is attached to. > + > +Required properties: > + - compatible: should contain one of the following: > + * "qcom,qca6174-bt" > + - enable-gpios: gpio specifier used to enable chip > + - pinctrl-0: pin phandle for bt_en gpio > + - clocks: clock phandle for SUSCLK_32KHZ
if I compare this with broadcom-bluetooth.txt or ti-bluetooth.txt then besides compatible, everything else is optional. The nokia-bluetooth.txt has everything required, but that is also a really specific platform.
Can we be less restrictive for a QCA general purpose chip?
> + > +Example: > + > +serial@7570000 { > + pinctrl-names = "default", "sleep"; > + pinctrl-0 = <&blsp1_uart1_default>; > + pinctrl-1 = <&blsp1_uart1_sleep>; > + > + bluetooth { > + compatible = "qcom,qca6174-bt"; > + > + enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>; > + > + pinctrl-names = "default"; > + pinctrl-0 = <&bt_en_pin_a>;
This one I do not understand and you might want to shed some light into why this is done that way.
> + > + clocks = <&divclk4>;
No clock-names?
Regards
Marcel
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