linux-kernel - [PATCH 1/4] dt-bindings: rtc: add schema for NXP S32G2/S32G3 SoCs

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Message-ID: <20240911070028.127659-2-ciprianmarian.costea@oss.nxp.com>
Date: Wed, 11 Sep 2024 10:00:25 +0300
From: Ciprian Costea <ciprianmarian.costea@....nxp.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>
Cc: linux-rtc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	NXP S32 Linux Team <s32@....com>,
	Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>,
	Bogdan-Gabriel Roman <bogdan-gabriel.roman@....com>,
	Ghennadi Procopciuc <ghennadi.procopciuc@....com>
Subject: [PATCH 1/4] dt-bindings: rtc: add schema for NXP S32G2/S32G3 SoCs

From: Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>

This patch adds the dt-bindings for NXP S32G2/S32G3 SoCs RTC driver.

Signed-off-by: Bogdan-Gabriel Roman <bogdan-gabriel.roman@....com>
Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>
---
 .../devicetree/bindings/rtc/nxp,s32g-rtc.yaml | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml

diff --git a/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
new file mode 100644
index 000000000000..8f78bce6470a
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nxp,s32g-rtc.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/nxp,s32g-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP S32G2/S32G3 Real Time Clock (RTC)
+
+maintainers:
+  - Bogdan Hamciuc <bogdan.hamciuc@....com>
+  - Ciprian Marian Costea <ciprianmarian.costea@....com>
+
+properties:
+  compatible:
+    const: nxp,s32g-rtc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  nxp,clksel:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Input clock selector. Choose between 0-SIRC and 2-FIRC.
+      The reason for these IDs not being consecutive is because
+      they are hardware coupled.
+    enum:
+      - 0  # SIRC
+      - 2  # FIRC
+
+  nxp,dividers:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      An array of two u32 elements, the former encoding DIV512,
+      the latter encoding DIV32. These are dividers that can be enabled
+      individually, or cascaded. Use 0 to disable the respective divider,
+      and 1 to enable it.
+    items:
+      - description: div512
+      - description: div32
+
+  clocks:
+    maxItems: 3
+
+  clock-names:
+    items:
+      - const: ipg
+      - const: sirc
+      - const: firc
+
+required:
+  - clock-names
+  - clocks
+  - compatible
+  - interrupts
+  - nxp,clksel
+  - nxp,dividers
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    rtc0: rtc@...60000 {
+        compatible = "nxp,s32g-rtc";
+        reg = <0x40060000 0x1000>;
+        interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clks 54>,
+                 <&clks 55>,
+                 <&clks 56>;
+        clock-names = "ipg", "sirc", "firc";
+        nxp,clksel = <2>;
+        nxp,dividers = <1 0>;
+    };
-- 
2.45.2