arm64: dts: freescale: Add support for the GOcontroll Moduline Display

Merge series from Maud Spierings <maudspierings@gocontroll.com>:

Add inital support for 2 variants of the Moduline Display controller
module slot.  This system is powered by the Ka-Ro Electronics tx8p-ml81
COM, which features an imx8mp SoC.

4 files changed, 97 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/connector/gocontroll,moduline-module-slot.yaml b/Documentation/devicetree/bindings/connector/gocontroll,moduline-module-slot.yaml
new file mode 100644
index 000000000000..a16ae2762d16
--- /dev/null
+++ b/Documentation/devicetree/bindings/connector/gocontroll,moduline-module-slot.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/connector/gocontroll,moduline-module-slot.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GOcontroll Moduline Module slot
+
+maintainers:
+  - Maud Spierings <maudspierings@gocontroll.com>
+
+description:
+  The GOcontroll Moduline module slot represents a connector that fullfills the
+  Moduline slot specification, and can thus house any IO module that is also
+  built to this spec.
+
+properties:
+  compatible:
+    const: gocontroll,moduline-module-slot
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description: indicates readiness, high means busy.
+    maxItems: 1
+  reset-gpios:
+    description: resets the module, active low.
+    maxItems: 1
+  sync-gpios:
+    description: sync line between all module slots.
+    maxItems: 1
+
+  vdd-supply:
+    description: low power 3v3 supply generally for the microcontroller.
+  vddp-supply:
+    description: medium power 5v0 supply for on module low power peripherals.
+  vddhpp-supply:
+    description: high power 6v-8v supply for on module high power peripherals.
+  power-supply:
+    description: high power 6v-30v supply for high power module circuits.
+
+  i2c-bus:
+    description: i2c bus shared between module slots and the SoC
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  slot-number:
+    description:
+      The number of the module slot representing the location of on the pcb.
+      This enables access to the modules based on slot location.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  spi-max-frequency: true
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - interrupts
+  - sync-gpios
+  - i2c-bus
+  - slot-number
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        connector@0 {
+            reg = <0>;
+            compatible = "gocontroll,moduline-module-slot";
+            reset-gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
+            sync-gpios = <&gpio4 16 GPIO_ACTIVE_HIGH>;
+            interrupt-parent = <&gpio4>;
+            interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+            vdd-supply = <&reg_3v3_per>;
+            vddp-supply = <&reg_5v0>;
+            vddhpp-supply = <&reg_6v4>;
+            i2c-bus = <&i2c2>;
+            slot-number = <1>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 5079ca6ce1d1..b5979832ddce 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -593,6 +593,8 @@ patternProperties:
     description: GlobalTop Technology, Inc.
   "^gmt,.*":
     description: Global Mixed-mode Technology, Inc.
+  "^gocontroll,.*":
+    description: GOcontroll Modular Embedded Electronics B.V.
   "^goldelico,.*":
     description: Golden Delicious Computers GmbH & Co. KG
   "^goodix,.*":
diff --git a/MAINTAINERS b/MAINTAINERS
index b77b87defeab..589a09d865f0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9820,6 +9820,11 @@ L:	linux-media@vger.kernel.org
 S:	Maintained
 F:	drivers/media/usb/go7007/
 
+GOCONTROLL MODULINE MODULE SLOT
+M:	Maud Spierings <maudspierings@gocontroll.com>
+S:	Maintained
+F:	Documentation/connector/gocontroll,moduline-module-slot.yaml
+
 GOODIX TOUCHSCREEN
 M:	Bastien Nocera <hadess@hadess.net>
 M:	Hans de Goede <hdegoede@redhat.com>
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 58ae4304fdab..6108959c28d9 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -706,6 +706,7 @@ static const struct spi_device_id spidev_spi_ids[] = {
 	{ .name = /* cisco */ "spi-petra" },
 	{ .name = /* dh */ "dhcom-board" },
 	{ .name = /* elgin */ "jg10309-01" },
+	{ .name = /* gocontroll */ "moduline-module-slot"},
 	{ .name = /* lineartechnology */ "ltc2488" },
 	{ .name = /* lwn */ "bk4" },
 	{ .name = /* lwn */ "bk4-spi" },
@@ -737,6 +738,7 @@ static const struct of_device_id spidev_dt_ids[] = {
 	{ .compatible = "cisco,spi-petra", .data = &spidev_of_check },
 	{ .compatible = "dh,dhcom-board", .data = &spidev_of_check },
 	{ .compatible = "elgin,jg10309-01", .data = &spidev_of_check },
+	{ .compatible = "gocontroll,moduline-module-slot", .data = &spidev_of_check},
 	{ .compatible = "lineartechnology,ltc2488", .data = &spidev_of_check },
 	{ .compatible = "lwn,bk4", .data = &spidev_of_check },
 	{ .compatible = "lwn,bk4-spi", .data = &spidev_of_check },