diff mbox series

[v6,03/10] dt-bindings: mfd: Add Apple Mac System Management Controller

Message ID 20250515-smc-6-15-v6-3-c47b1ef4b0ae@svenpeter.dev
State New
Headers show
Series Apple Mac System Management Controller | expand

Commit Message

Sven Peter via B4 Relay May 15, 2025, 6:21 a.m. UTC 
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>

Add a DT binding for the Apple Mac System Management Controller.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
 .../devicetree/bindings/mfd/apple,smc.yaml         | 79 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 80 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/mfd/apple,smc.yaml b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..1937fb3d2578dcf69991e83095e3e1e29958ef37
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
@@ -0,0 +1,79 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/apple,smc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple Mac System Management Controller
+
+maintainers:
+  - Sven Peter <sven@svenpeter.dev>
+
+description:
+  Apple Mac System Management Controller implements various functions
+  such as GPIO, RTC, power, reboot.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t6000-smc
+          - apple,t8103-smc
+          - apple,t8112-smc
+      - const: apple,smc
+
+  reg:
+    items:
+      - description: SMC area
+      - description: SRAM area
+
+  reg-names:
+    items:
+      - const: smc
+      - const: sram
+
+  mboxes:
+    maxItems: 1
+
+  gpio:
+    $ref: /schemas/gpio/apple,smc-gpio.yaml
+
+  reboot:
+    $ref: /schemas/power/reset/apple,smc-reboot.yaml
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - mboxes
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      smc@23e400000 {
+        compatible = "apple,t8103-smc", "apple,smc";
+        reg = <0x2 0x3e400000 0x0 0x4000>,
+               <0x2 0x3fe00000 0x0 0x100000>;
+        reg-names = "smc", "sram";
+        mboxes = <&smc_mbox>;
+
+        smc_gpio: gpio {
+          compatible = "apple,smc-gpio";
+          gpio-controller;
+          #gpio-cells = <2>;
+        };
+
+        reboot {
+          compatible = "apple,smc-reboot";
+          nvmem-cells = <&shutdown_flag>, <&boot_stage>,
+                        <&boot_error_count>, <&panic_count>;
+          nvmem-cell-names = "shutdown_flag", "boot_stage",
+                             "boot_error_count", "panic_count";
+        };
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 3f32d028ab49994a0da9f3882f37b9c3b183f5b4..27caedc40262ee9b9fdb6478f7624422517375a7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2275,6 +2275,7 @@  F:	Documentation/devicetree/bindings/iommu/apple,dart.yaml
 F:	Documentation/devicetree/bindings/iommu/apple,sart.yaml
 F:	Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml
 F:	Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
+F:	Documentation/devicetree/bindings/mfd/apple,smc.yaml
 F:	Documentation/devicetree/bindings/net/bluetooth/brcm,bcm4377-bluetooth.yaml
 F:	Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml
 F:	Documentation/devicetree/bindings/nvmem/apple,efuses.yaml