linux-kernel - [PATCH v3 1/2] dt-bindings: hwlock: add sun8i

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Message-ID: <ac2c2b279be52876d66c91826a1ccebd08fe4810.1607353274.git.wilken.gottwalt@posteo.net>
Date:   Mon, 7 Dec 2020 17:05:03 +0100
From:   Wilken Gottwalt <wilken.gottwalt@...teo.net>
To:     linux-kernel@...r.kernel.org
Cc:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Baolin Wang <baolin.wang7@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>
Subject: [PATCH v3 1/2] dt-bindings: hwlock: add sun8i_hwspinlock
 documentation

Adds documentation on how to use the sun8i_hwspinlock driver for sun8i
compatible SoCs.

Signed-off-by: Wilken Gottwalt <wilken.gottwalt@...teo.net>
---
 .../bindings/hwlock/sun8i-hwspinlock.yaml     | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml

diff --git a/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml
new file mode 100644
index 000000000000..2954ee0b36a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwlock/sun8i-hwspinlock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SUN8I hardware spinlock driver for Allwinner sun8i compatible SoCs
+
+maintainers:
+  - Wilken Gottwalt <wilken.gottwalt@...teo.net>
+
+properties:
+  compatible:
+    enum:
+      - allwinner,sun8i-hwspinlock
+
+    reg:          # 0x01C18000 (H2+, H3, H5), 0x03004000 (H6), length 0x1000
+      maxItems: 1
+
+    clocks:       # phandle to the reference clock
+      maxItems: 1
+
+    clock-names:  # name of the bus ("ahb")
+      maxItems: 1
+
+    resets:       # phandle to the reset control
+      maxItems: 1
+
+    reset-names:  # name of the bus ("ahb")
+      maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+additionalProperties: false
+
+examples:
+
+  - |
+    /* H2+ based OrangePi Zero */
+    hwspinlock: hwspinlock@...8000 {
+      compatible = "allwinner,sun8i-hwspinlock";
+      reg = <0x01c18000 0x1000>;
+      clocks = <&ccu CLK_BUS_SPINLOCK>;
+      clock-names = "ahb";
+      resets = <&ccu RST_BUS_SPINLOCK>;
+      reset-names = "ahb";
+    };
+
+    /* H6 based OrangePi 3 */
+    hwspinlock: hwspinlock@...4000 {
+      compatible = "allwinner,sun8i-hwspinlock";
+      reg = <0x03004000 0x1000>;
+      clocks = <&ccu CLK_BUS_SPINLOCK>;
+      clock-names = "ahb";
+      resets = <&ccu RST_BUS_SPINLOCK>;
+      reset-names = "ahb";
+    };
-- 
2.29.2