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Message-ID: <20250509122452.11827-3-srini@kernel.org>
Date: Fri, 9 May 2025 13:24:51 +0100
From: srini@...nel.org
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org,
Sasha Finkelstein <fnkl.kernel@...il.com>,
Alyssa Rosenzweig <alyssa@...enzweig.io>,
Rob Herring <robh@...nel.org>,
Neal Gompa <neal@...pa.dev>,
Srinivas Kandagatla <srini@...nel.org>
Subject: [PATCH 2/3] dt-bindings: spmi: Add Apple SPMI NVMEM
From: Sasha Finkelstein <fnkl.kernel@...il.com>
Add bindings for exposing SPMI registers of Apple PMICs as NVMEM cells
Reviewed-by: Alyssa Rosenzweig <alyssa@...enzweig.io>
Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Reviewed-by: Neal Gompa <neal@...pa.dev>
Signed-off-by: Srinivas Kandagatla <srini@...nel.org>
---
.../bindings/nvmem/apple,spmi-nvmem.yaml | 54 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 55 insertions(+)
create mode 100644 Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml
diff --git a/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml b/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml
new file mode 100644
index 000000000000..80b5a6cdcec9
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/apple,spmi-nvmem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple SPMI NVMEM
+
+description: Exports a series of SPMI registers as NVMEM cells
+
+maintainers:
+ - Sasha Finkelstein <fnkl.kernel@...il.com>
+
+allOf:
+ - $ref: nvmem.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - apple,maverick-pmic
+ - apple,sera-pmic
+ - apple,stowe-pmic
+ - const: apple,spmi-nvmem
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/spmi/spmi.h>
+
+ pmic@f {
+ compatible = "apple,maverick-pmic", "apple,spmi-nvmem";
+ reg = <0xf SPMI_USID>;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ boot_stage: boot-stage@...1 {
+ reg = <0x6001 0x1>;
+ };
+ };
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 3cbf9ac0d83f..9936fa9fe87c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2277,6 +2277,7 @@ F: Documentation/devicetree/bindings/mailbox/apple,mailbox.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
+F: Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml
F: Documentation/devicetree/bindings/pci/apple,pcie.yaml
F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
F: Documentation/devicetree/bindings/power/apple*
--
2.43.0
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