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Message-Id: <20250806-pxa1908-genpd-v1-2-16409309fc72@dujemihanovic.xyz>
Date: Wed, 06 Aug 2025 19:33:21 +0200
From: Duje Mihanović <duje@...emihanovic.xyz>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Ulf Hansson <ulf.hansson@...aro.org>
Cc: David Wronek <david@...nlining.org>, Karel Balej <balejk@...fyz.cz>,
phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org,
Duje Mihanović <duje@...emihanovic.xyz>
Subject: [PATCH RFC 2/5] dt-bindings: power: Add Marvell PXA1908 domains
Add device tree bindings for Marvell PXA1908's power domains.
Signed-off-by: Duje Mihanović <duje@...emihanovic.xyz>
---
.../power/marvell,pxa1908-power-controller.yaml | 105 +++++++++++++++++++++
include/dt-bindings/power/marvell,pxa1908-power.h | 17 ++++
2 files changed, 122 insertions(+)
diff --git a/Documentation/devicetree/bindings/power/marvell,pxa1908-power-controller.yaml b/Documentation/devicetree/bindings/power/marvell,pxa1908-power-controller.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..1cf3a45d56cbb7b75f7204d656016a9a569da186
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/marvell,pxa1908-power-controller.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/marvell,pxa1908-power-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell PXA1908 Power Domain Controller
+
+maintainers:
+ - Duje Mihanović <duje@...emihanovic.xyz>
+
+description: |
+ The Marvell PXA1908 SoC includes multiple power domains which can be powered
+ on/off to save power when different IP cores are not in use.
+
+properties:
+ $nodename:
+ pattern: '^power-controller$'
+
+ compatible:
+ const: marvell,pxa1908-power-controller
+
+ '#power-domain-cells':
+ const: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+patternProperties:
+ "^power-domain@[0-9a-f]+$":
+ type: object
+
+ description: |
+ Represents a power domain within the power controller node as documented
+ in Documentation/devicetree/bindings/power/power-domain.yaml.
+
+ properties:
+ reg:
+ description: |
+ Power domain index. Valid values are defined in:
+ "include/dt-bindings/power/marvell,pxa1908-power.h"
+ maxItems: 1
+
+ clocks:
+ description: |
+ A number of phandles to clocks that need to be enabled during domain
+ power up.
+
+ '#power-domain-cells':
+ const: 0
+
+ required:
+ - reg
+
+ unevaluatedProperties: false
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/power/marvell,pxa1908-power.h>
+
+ clock-controller@...82800 {
+ compatible = "marvell,pxa1908-apmu", "simple-mfd", "syscon";
+ reg = <0xd4282800 0x400>;
+ #clock-cells = <1>;
+
+ power-controller {
+ compatible = "marvell,pxa1908-power-controller";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #power-domain-cells = <1>;
+
+ power-domain@...1908_POWER_DOMAIN_VPU {
+ reg = <PXA1908_POWER_DOMAIN_VPU>;
+ #power-domain-cells = <0>;
+ };
+
+ power-domain@...1908_POWER_DOMAIN_GPU {
+ reg = <PXA1908_POWER_DOMAIN_GPU>;
+ #power-domain-cells = <0>;
+ };
+
+ power-domain@...1908_POWER_DOMAIN_GPU2D {
+ reg = <PXA1908_POWER_DOMAIN_GPU2D>;
+ #power-domain-cells = <0>;
+ };
+
+ power-domain@...1908_POWER_DOMAIN_DSI {
+ reg = <PXA1908_POWER_DOMAIN_DSI>;
+ #power-domain-cells = <0>;
+ };
+
+ power-domain@...1908_POWER_DOMAIN_ISP {
+ reg = <PXA1908_POWER_DOMAIN_ISP>;
+ #power-domain-cells = <0>;
+ };
+ };
+ };
diff --git a/include/dt-bindings/power/marvell,pxa1908-power.h b/include/dt-bindings/power/marvell,pxa1908-power.h
new file mode 100644
index 0000000000000000000000000000000000000000..19b088351af138823505a774ff27203429fe2d97
--- /dev/null
+++ b/include/dt-bindings/power/marvell,pxa1908-power.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+/*
+ * Marvell PXA1908 power domains
+ *
+ * Copyright 2025, Duje Mihanović <duje@...emihanovic.xyz>
+ */
+
+#ifndef __DTS_MARVELL_PXA1908_POWER_H
+#define __DTS_MARVELL_PXA1908_POWER_H
+
+#define PXA1908_POWER_DOMAIN_VPU 0
+#define PXA1908_POWER_DOMAIN_GPU 1
+#define PXA1908_POWER_DOMAIN_GPU2D 2
+#define PXA1908_POWER_DOMAIN_DSI 3
+#define PXA1908_POWER_DOMAIN_ISP 4
+
+#endif
--
2.50.1
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