73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
* Qualcomm MSM CAMERA FLASH
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Required properties:
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- cell-index : Should contain flash source index to diffentiate
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between different flash devices. These indexes represent flash devices
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for multiple flashes.
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- 0, 1, 2, 3
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- compatible :
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- "qcom,camera-led-flash"
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- "qcom,camera-flash"
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- "qcom,led-flash"
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- "qcom,led-flash1"
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- qcom,flash-type : Should contain type flash device
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- 1 for LED flash
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- 2 for strobe flash
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- 3 for simple led flash controlled by one gpio
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This is a low cost led used for camera flash, the led is driven by
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system power, and use a transistor controlled by external pin to
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gate its on/off state.
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- qcom,flash-source : Should contain array of phandles to flash source nodes.
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- pm8941_flash0 pm8941_flash1
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Optional properties:
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-qcom,torch-source : Should contain phandle to torch source node.
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-pm8941_torch
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- qcom,slave-id : should contain i2c slave address, device id address
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and expected id read value.
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- qcom,max-current: Max current in mA supported by flash
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- qcom,max-duration: Max duration in milliseconds the flash can glow.
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-qcom,switch-source : Should contain phandle to switch source node.
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This is used to trigger dual led at same time to avoid sync issues.
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- qcom,cci-master : should contain i2c master id to be used for this flash.
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- 0 -> MASTER 0
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- 1 -> MASTER 1
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- reg : offset and length of the register set for the device.
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for the flash operating in compatible mode.
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- gpios : should contain phandle to gpio controller node and array of
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#gpio-cells specifying specific gpio (controller specific)
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- qcom,gpio-req-tbl-num : should contain index to gpios specific to this flash
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- qcom,gpio-req-tbl-flags : should contain direction of gpios present in
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qcom,gpio-req-tbl-num property (in the same order)
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- qcom,gpio-req-tbl-label : should contain name of gpios present in
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qcom,gpio-req-tbl-num property (in the same order)
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- qcom,gpio-flash-reset : should contain index to gpio used by flash's "flash reset" pin.
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- qcom,gpio-flash-en : should contain index to gpio used by flash's "flash enable" pin.
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- qcom,gpio-flash-now : should contain index to gpio used by flash's "flash now" pin.
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- label : should contain unique flash name to differentiate from other flash
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- "adp1660"
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- "bd7710"
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Example:
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qcom,led-flash@60 {
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reg = <0x60>;
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cell-index = <0>;
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qcom,slave-id = <0x60 0x00 0x0011>;
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compatible = "qcom,led-flash";
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label = "adp1660";
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qcom,flash-type = <1>;
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qcom,cci-master = <0>;
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gpios = <&msmgpio 23 0>,
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<&msmgpio 24 0>;
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<&msmgpio 25 0>;
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qcom,gpio-flash-reset = <0>;
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qcom,gpio-flash-en = <0>;
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qcom,gpio-flash-now = <1>;
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qcom,gpio-req-tbl-num = <0 1>;
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qcom,gpio-req-tbl-flags = <0 0>;
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qcom,gpio-req-tbl-label = "FLASH_EN",
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"FLASH_NOW";
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qcom,max-current = <750>;
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qcom,max-duration = <1600>;
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};
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