[PATCH 2/6] dt-bindings: serdev: ngsm: Add binding for serdev-ngsm

Tony Lindgren
2020-05-12T21:47:31Z

Add a binding document for a generic serdev-ngsm driver that can be
used to bring up TS 27.010 line discipline with Linux n_gsm support
on a serial port.

As the Motorola Mapphone modems require some custom handling, they
are handled with a separate compatible.

Let's also add vendor string for ETSI as we're using a ETSI 3GPP
TS 27.010 standard.

Reviewed-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
.../bindings/serdev/serdev-ngsm.yaml | 64 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
2 files changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/serdev/serdev-ngsm.yaml

diff --git a/Documentation/devicetree/bindings/serdev/serdev-ngsm.yaml b/Documentation/devicetree/bindings/serdev/serdev-ngsm.yaml
new file mode 100644
--- /dev/null
+++ b/Documentation/devicetree/bindings/serdev/serdev-ngsm.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serdev/serdev-ngsm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic serdev-ngsm TS 27.010 driver
+
+maintainers:
+ - Tony Lindgren <tony@atomide.com>
+
+properties:
+ compatible:
+ enum:
+ - etsi,3gpp-ts27010-adaption1
+ - motorola,mapphone-mdm6600-serial
+
+ ttymask:
+ $ref: /schemas/types.yaml#/definitions/uint64
+ description: Mask of the TS 27.010 channel TTY interfaces to start (64 bit)
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: motorola,mapphone-mdm6600-serial
+ then:
+ properties:
+ phys:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: USB PHY needed for shared GPIO PM wake-up pins
+ maxItems: 1
+
+ phy-names:
+ description: Name of the USB PHY
+ const: usb
+
+ required:
+ - phys
+ - phy-names
+
+required:
+ - compatible
+ - ttymask
+ - "#address-cells"
+ - "#size-cells"
+
+examples:
+ - |
+ modem {
+ compatible = "motorola,mapphone-mdm6600-serial";
+ ttymask = <0 0x00001fee>;
+ phys = <&fsusb1_phy>;
+ phy-names = "usb";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -323,6 +323,8 @@ patternProperties:
description: Espressif Systems Co. Ltd.
"^est,.*":
description: ESTeem Wireless Modems
+ "^etsi,.*":
+ description: ETSI
"^ettus,.*":
description: NI Ettus Research
"^eukrea,.*":
--
2.26.2