linux-kernel - [PATCH v1 1/2] dt-bindings: media: i2c: add lm3560 binding

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Date:   Wed,  8 Mar 2023 11:52:08 +0200
From:   Svyatoslav Ryhel <clamor95@...il.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Svyatoslav Ryhel <clamor95@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Luca Ceresoli <luca.ceresoli@...tlin.com>,
        Jean Delvare <jdelvare@...e.de>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Daniel Jeong <gshark.jeong@...il.com>,
        Ldd-Mlp <ldd-mlp@...t.ti.com>
Cc:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: media: i2c: add lm3560 binding

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
---
 .../bindings/media/i2c/ti,lm3560.yaml         | 130 ++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,lm3560.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/ti,lm3560.yaml b/Documentation/devicetree/bindings/media/i2c/ti,lm3560.yaml
new file mode 100644
index 000000000000..b3c2ccb83a30
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ti,lm3560.yaml
@@ -0,0 +1,130 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ti,lm3560.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LM3560 Synchronous Boost Flash Driver
+
+maintainers:
+  - Daniel Jeong <gshark.jeong@...il.com>
+  - Ldd-Mlp <ldd-mlp@...t.ti.com>
+
+description: |
+  The LM3560 is a 2-MHz fixed frequency synchronous boost
+  converter with two 1000-mA constant current drivers for
+  high-current white LEDs. The dual highside current sources
+  allow for grounded cathode LED operation and can be tied
+  together for providing flash currents at up to 2 A through
+  a single LED. An adaptive regulation method ensures the
+  current for each LED remains in regulation and maximizes
+  efficiency.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - ti,lm3559
+          - ti,lm3560
+
+  reg:
+    maxItems: 1
+
+  enable-gpios:
+    maxItems: 1
+
+  ti,peak-current:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 0x20, 0x40, 0x60]
+    default: 0x60
+    description: |
+      Peak current can be set to 4 values 1.6A (0x00),
+      2.3A (0x20), 3.0A (0x40) and 3.6A (0x60).
+
+  ti,max-flash-timeout:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 32
+    maximum: 1024
+    default: 1024
+    description: |
+      Maximum flash timeout in ms with step 32ms.
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+
+patternProperties:
+  "^led@[01]$":
+    type: object
+    description: |
+      Properties for a connected LEDs.
+    properties:
+      reg:
+        minimum: 0
+        maximum: 1
+
+      ti,max-flash-current:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 62500
+        maximum: 1000000
+        default: 1000000
+        description: |
+          Maximum current in flash mode in uA with step 62500uA.
+
+      ti,max-torch-current:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 31250
+        maximum: 250000
+        default: 250000
+        description: |
+          Maximum current in tourch mode in uA with step 31250uA.
+
+    required:
+      - reg
+
+    additionalProperties: false
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash-led@53 {
+            compatible = "ti,lm3559";
+            reg = <0x53>;
+
+            enable-gpios = <&gpio 219 GPIO_ACTIVE_HIGH>;
+
+            ti,peak-current = <0>;
+            ti,max-flash-timeout = <1024>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            led@0 {
+                reg = <0>;
+
+                ti,max-flash-current = <562500>;
+                ti,max-torch-current = <156250>;
+            };
+
+            led@1 {
+                reg = <1>;
+
+                ti,max-flash-current = <562500>;
+                ti,max-torch-current = <156250>;
+            };
+        };
+    };
+...
-- 
2.37.2