From 2d168d3f68a7826cda53c8bb713965953b2c93fc Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Mon, 1 Feb 2021 12:45:00 +0100
Subject: dts: update to v5.11-rc6

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 dts/Bindings/leds/richtek,rt8515.yaml | 111 ++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 dts/Bindings/leds/richtek,rt8515.yaml

(limited to 'dts/Bindings/leds')

diff --git a/dts/Bindings/leds/richtek,rt8515.yaml b/dts/Bindings/leds/richtek,rt8515.yaml
new file mode 100644
index 0000000000..68c328eec0
--- /dev/null
+++ b/dts/Bindings/leds/richtek,rt8515.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/richtek,rt8515.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT8515 1.5A dual channel LED driver
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+  The Richtek RT8515 is a dual channel (two mode) LED driver that
+  supports driving a white LED in flash or torch mode. The maximum
+  current for each mode is defined in hardware using two resistors
+  RFS and RTS.
+
+properties:
+  compatible:
+    const: richtek,rt8515
+
+  enf-gpios:
+    maxItems: 1
+    description: A connection to the 'ENF' (enable flash) pin.
+
+  ent-gpios:
+    maxItems: 1
+    description: A connection to the 'ENT' (enable torch) pin.
+
+  richtek,rfs-ohms:
+    minimum: 7680
+    maximum: 367000
+    description: The resistance value of the RFS resistor. This
+      resistors limits the maximum flash current. This must be set
+      for the property flash-max-microamp to work, the RFS resistor
+      defines the range of the dimmer setting (brightness) of the
+      flash LED.
+
+  richtek,rts-ohms:
+    minimum: 7680
+    maximum: 367000
+    description: The resistance value of the RTS resistor. This
+      resistors limits the maximum torch current. This must be set
+      for the property torch-max-microamp to work, the RTS resistor
+      defines the range of the dimmer setting (brightness) of the
+      torch LED.
+
+  led:
+    type: object
+    $ref: common.yaml#
+    properties:
+      function: true
+      color: true
+      flash-max-timeout-us: true
+
+      flash-max-microamp:
+        maximum: 700000
+        description: The maximum current for flash mode
+          is hardwired to the component using the RFS resistor to
+          ground. The maximum hardware current setting is calculated
+          according to the formula Imax = 5500 / RFS. The lowest
+          allowed resistance value is 7.86 kOhm giving an absolute
+          maximum current of 700mA. By setting this attribute in
+          the device tree, you can further restrict the maximum
+          current below the hardware limit. This requires the RFS
+          to be defined as it defines the maximum range.
+
+      led-max-microamp:
+        maximum: 700000
+        description: The maximum current for torch mode
+          is hardwired to the component using the RTS resistor to
+          ground. The maximum hardware current setting is calculated
+          according to the formula Imax = 5500 / RTS. The lowest
+          allowed resistance value is 7.86 kOhm giving an absolute
+          maximum current of 700mA. By setting this attribute in
+          the device tree, you can further restrict the maximum
+          current below the hardware limit. This requires the RTS
+          to be defined as it defines the maximum range.
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - ent-gpios
+  - enf-gpios
+  - led
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/leds/common.h>
+
+    led-controller {
+        compatible = "richtek,rt8515";
+        enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
+        ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
+        richtek,rfs-ohms = <16000>;
+        richtek,rts-ohms = <100000>;
+
+        led {
+            function = LED_FUNCTION_FLASH;
+            color = <LED_COLOR_ID_WHITE>;
+            flash-max-timeout-us = <250000>;
+            flash-max-microamp = <150000>;
+            led-max-microamp = <25000>;
+        };
+    };
+
+...
-- 
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