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269 lines
5.9 KiB
269 lines
5.9 KiB
TI LMU (Lighting Management Unit) device tree bindings |
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TI LMU driver supports lighting devices below. |
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Name Child nodes |
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------ --------------------------------- |
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LM3631 Backlight and regulator |
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LM3632 Backlight and regulator |
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LM3633 Backlight, LED and fault monitor |
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LM3695 Backlight |
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LM36274 Backlight and regulator |
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Required properties: |
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- compatible: Should be one of: |
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"ti,lm3631" |
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"ti,lm3632" |
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"ti,lm3633" |
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"ti,lm3695" |
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"ti,lm36274" |
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- reg: I2C slave address. |
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0x11 for LM3632 |
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0x29 for LM3631 |
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0x36 for LM3633 |
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0x63 for LM3695 |
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0x11 for LM36274 |
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Optional properties: |
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- enable-gpios: A GPIO specifier for hardware enable pin. |
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- ramp-up-us: Current ramping from one brightness level to |
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the a higher brightness level. |
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Range from 2048 us - 117.44 s |
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- ramp-down-us: Current ramping from one brightness level to |
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the a lower brightness level. |
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Range from 2048 us - 117.44 s |
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- ti,brightness-resolution - This determines whether to use 8 bit brightness |
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mode or 11 bit brightness mode. If this value is |
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not set the device is defaulted to the preferred |
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8bit brightness mode per 7.3.4.1 of the data |
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sheet. This setting can either be in the parent |
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node or as part of the LED child nodes. This |
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is determined by the part itself if the strings |
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have a common brightness register or individual |
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brightness registers. |
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The values are 255 (8bit) or 2047 (11bit). |
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Required node: |
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- backlight: All LMU devices have backlight child nodes. |
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For the properties, please refer to [1]. |
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Optional nodes: |
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- fault-monitor: Hardware fault monitoring driver for LM3633 and LM3697. |
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Required properties: |
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- compatible: Should be one of: |
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"ti,lm3633-fault-monitor" |
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- leds: LED properties for LM3633. Please refer to [2]. |
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LED properties for LM36274. Please refer to [4]. |
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- regulators: Regulator properties for LM3631 and LM3632. |
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Please refer to [3]. |
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[1] ../leds/backlight/ti-lmu-backlight.txt |
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[2] ../leds/leds-lm3633.txt |
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[3] ../regulator/lm363x-regulator.txt |
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[4] ../leds/leds-lm36274.txt |
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lm3631@29 { |
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compatible = "ti,lm3631"; |
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reg = <0x29>; |
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regulators { |
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compatible = "ti,lm363x-regulator"; |
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vboost { |
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regulator-name = "lcd_boost"; |
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regulator-min-microvolt = <4500000>; |
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regulator-max-microvolt = <6350000>; |
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regulator-always-on; |
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}; |
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vcont { |
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regulator-name = "lcd_vcont"; |
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regulator-min-microvolt = <1800000>; |
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regulator-max-microvolt = <3300000>; |
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}; |
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voref { |
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regulator-name = "lcd_voref"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6000000>; |
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}; |
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vpos { |
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regulator-name = "lcd_vpos"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6000000>; |
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regulator-boot-on; |
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}; |
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vneg { |
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regulator-name = "lcd_vneg"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6000000>; |
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regulator-boot-on; |
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}; |
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}; |
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backlight { |
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compatible = "ti,lm3631-backlight"; |
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lcd_bl { |
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led-sources = <0 1>; |
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ramp-up-us = <300000>; |
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}; |
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}; |
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}; |
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lm3632@11 { |
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compatible = "ti,lm3632"; |
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reg = <0x11>; |
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enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; /* PC2 */ |
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regulators { |
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compatible = "ti,lm363x-regulator"; |
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enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>, |
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<&pioC 1 GPIO_ACTIVE_HIGH>; |
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vboost { |
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regulator-name = "lcd_boost"; |
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regulator-min-microvolt = <4500000>; |
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regulator-max-microvolt = <6400000>; |
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regulator-always-on; |
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}; |
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vpos { |
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regulator-name = "lcd_vpos"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6000000>; |
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}; |
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vneg { |
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regulator-name = "lcd_vneg"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6000000>; |
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}; |
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}; |
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backlight { |
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compatible = "ti,lm3632-backlight"; |
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pwms = <&pwm0 0 10000 0>; /* pwm number, period, polarity */ |
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pwm-names = "lmu-backlight"; |
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lcd { |
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led-sources = <0 1>; |
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pwm-period = <10000>; |
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}; |
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}; |
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}; |
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lm3633@36 { |
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compatible = "ti,lm3633"; |
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reg = <0x36>; |
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enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; |
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backlight { |
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compatible = "ti,lm3633-backlight"; |
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main { |
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label = "main_lcd"; |
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led-sources = <1 2>; |
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ramp-up-us = <500000>; |
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ramp-down-us = <500000>; |
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}; |
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front { |
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label = "front_lcd"; |
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led-sources = <0>; |
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ramp-up-us = <1000000>; |
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ramp-down-us = <0>; |
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}; |
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}; |
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leds { |
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compatible = "ti,lm3633-leds"; |
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chan1 { |
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label = "status"; |
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led-sources = <1>; |
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led-max-microamp = <6000>; |
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}; |
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chan345 { |
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label = "rgb"; |
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led-sources = <3 4 5>; |
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led-max-microamp = <10000>; |
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}; |
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}; |
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fault-monitor { |
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compatible = "ti,lm3633-fault-monitor"; |
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}; |
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}; |
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lm3695@63 { |
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compatible = "ti,lm3695"; |
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reg = <0x63>; |
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enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; |
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backlight { |
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compatible = "ti,lm3695-backlight"; |
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lcd { |
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label = "bl"; |
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led-sources = <0 1>; |
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}; |
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}; |
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}; |
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lm36274@11 { |
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compatible = "ti,lm36274"; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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reg = <0x11>; |
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enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; |
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regulators { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "ti,lm363x-regulator"; |
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enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>, |
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<&pioC 1 GPIO_ACTIVE_HIGH>; |
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vboost { |
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regulator-name = "lcd_boost"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <7150000>; |
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regulator-always-on; |
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}; |
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vpos { |
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regulator-name = "lcd_vpos"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6500000>; |
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}; |
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vneg { |
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regulator-name = "lcd_vneg"; |
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regulator-min-microvolt = <4000000>; |
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regulator-max-microvolt = <6500000>; |
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}; |
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}; |
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backlight { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "ti,lm36274-backlight"; |
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led@0 { |
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reg = <0>; |
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led-sources = <0 2>; |
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label = "white:backlight_cluster"; |
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linux,default-trigger = "backlight"; |
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}; |
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}; |
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};
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