[PATCH v13 net-next 8/9] dt-bindings: mfd: ocelot: add bindings for VSC7512

Colin Foster
2022-07-05T20:48:57Z

Add devicetree bindings for SPI-controlled Ocelot chips, specifically the
VSC7512.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/mfd/mscc,ocelot.yaml | 160 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 161 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml

diff --git a/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml b/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
new file mode 100644
index 000000000000..8bf45a5673a4
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
@@ -0,0 +1,160 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/mscc,ocelot.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ocelot Externally-Controlled Ethernet Switch
+
+maintainers:
+ - Colin Foster <colin.foster@in-advantage.com>
+
+description: |
+ The Ocelot ethernet switch family contains chips that have an internal CPU
+ (VSC7513, VSC7514) and chips that don't (VSC7511, VSC7512). All switches have
+ the option to be controlled externally, which is the purpose of this driver.
+
+ The switch family is a multi-port networking switch that supports many
+ interfaces. Additionally, the device can perform pin control, MDIO buses, and
+ external GPIO expanders.
+
+properties:
+ compatible:
+ enum:
+ - mscc,vsc7512
+
+ reg:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+ spi-max-frequency:
+ maxItems: 1
+
+patternProperties:
+ "^pinctrl@[0-9a-f]+$":
+ type: object
+ $ref: /schemas/pinctrl/mscc,ocelot-pinctrl.yaml
+
+ "^gpio@[0-9a-f]+$":
+ type: object
+ $ref: /schemas/pinctrl/microchip,sparx5-sgpio.yaml
+ properties:
+ compatible:
+ enum:
+ - mscc,ocelot-sgpio
+
+ "^mdio@[0-9a-f]+$":
+ type: object
+ $ref: /schemas/net/mscc,miim.yaml
+ properties:
+ compatible:
+ enum:
+ - mscc,ocelot-miim
+
+required:
+ - compatible
+ - reg
+ - '#address-cells'
+ - '#size-cells'
+ - spi-max-frequency
+
+additionalProperties: false
+
+examples:
+ - |
+ ocelot_clock: ocelot-clock {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <125000000>;
+ };
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ soc@0 {
+ compatible = "mscc,vsc7512";
+ spi-max-frequency = <2500000>;
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ mdio@7107009c {
+ compatible = "mscc,ocelot-miim";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x7107009c 0x24>;
+
+ sw_phy0: ethernet-phy@0 {
+ reg = <0x0>;
+ };
+ };
+
+ mdio@710700c0 {
+ compatible = "mscc,ocelot-miim";
+ pinctrl-names = "default";
+ pinctrl-0 = <&miim1_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x710700c0 0x24>;
+
+ sw_phy4: ethernet-phy@4 {
+ reg = <0x4>;
+ };
+ };
+
+ gpio: pinctrl@71070034 {
+ compatible = "mscc,ocelot-pinctrl";
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&gpio 0 0 22>;
+ reg = <0x71070034 0x6c>;
+
+ sgpio_pins: sgpio-pins {
+ pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3";
+ function = "sg0";
+ };
+
+ miim1_pins: miim1-pins {
+ pins = "GPIO_14", "GPIO_15";
+ function = "miim";
+ };
+ };
+
+ gpio@710700f8 {
+ compatible = "mscc,ocelot-sgpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ bus-frequency = <12500000>;
+ clocks = <&ocelot_clock>;
+ microchip,sgpio-port-ranges = <0 15>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&sgpio_pins>;
+ reg = <0x710700f8 0x100>;
+
+ sgpio_in0: gpio@0 {
+ compatible = "microchip,sparx5-sgpio-bank";
+ reg = <0>;
+ gpio-controller;
+ #gpio-cells = <3>;
+ ngpios = <64>;
+ };
+
+ sgpio_out1: gpio@1 {
+ compatible = "microchip,sparx5-sgpio-bank";
+ reg = <1>;
+ gpio-controller;
+ #gpio-cells = <3>;
+ ngpios = <64>;
+ };
+ };
+ };
+ };
+
+...
+
diff --git a/MAINTAINERS b/MAINTAINERS
index f781caceeb38..5e798c42fa08 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14470,6 +14470,7 @@ F: tools/testing/selftests/drivers/net/ocelot/*
OCELOT EXTERNAL SWITCH CONTROL
M: Colin Foster <colin.foster@in-advantage.com>
S: Supported
+F: Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
F: include/linux/mfd/ocelot.h

OCXL (Open Coherent Accelerator Processor Interface OpenCAPI) DRIVER
--
2.25.1