linux-kernel - [PATCH v1 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241015075134.1449458-2-TroyMitchell988@gmail.com>
Date: Tue, 15 Oct 2024 15:51:33 +0800
From: Troy Mitchell <troymitchell988@...il.com>
To: andi.shyti@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: troymitchell988@...il.com,
	linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC

The i2c of K1 supports fast-speed-mode and high-speed-mode,
and supports FIFO transmission.

Signed-off-by: Troy Mitchell <TroyMitchell988@...il.com>
---
 .../bindings/i2c/spacemit,k1-i2c.yaml         | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
new file mode 100644
index 000000000000..c1460ec2b323
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: I2C controller embedded in SpacemiT's K1 SoC
+
+maintainers:
+  - Troy Mitchell <troymitchell988@...il.com>
+
+properties:
+  compatible:
+    const: spacemit,k1-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency:
+    description:
+      Desired I2C bus clock frequency in Hz. As only fast and high-speed
+      modes are supported by hardware, possible values are 100000 and 400000.
+    enum: [100000, 400000]
+    default: 100000
+
+  fifo-disable:
+    type: boolean
+    description:
+      Whether to disable FIFO. If FIFO is turned on, it will be interrupted
+      only when the FIFO depth is reached, which can reduce the frequency
+      of interruption.
+    default: false
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+examples:
+  - |
+    i2c0: i2c@...10800 {
+        compatible = "spacemit,k1-i2c";
+        reg = <0x0 0xd4010800 0x0 0x38>;
+        interrupt-parent = <&plic>;
+        interrupts = <36>;
+        clocks = <&ccu 90>;
+        clock-frequency = <100000>;
+    };
+
+...
-- 
2.34.1