50 lines
1.5 KiB
Plaintext
50 lines
1.5 KiB
Plaintext
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Qualcomm Technologies, Inc NQxxxx NFC NCI device
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Near Field Communication (NFC) device is based on NFC Controller Interface (NCI)
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Required properties:
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- compatible: "qcom,nq-nci"
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- reg: NCI i2c slave address.
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- qcom,nq-ven: specific gpio for hardware reset.
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- qcom,nq-irq: specific gpio for read interrupt.
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- qcom,nq-firm: gpio for firmware download
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- qcom,nq-clkreq: gpio for clock
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- interrupt-parent: Should be phandle for the interrupt controller
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that services interrupts for this device.
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- interrupts: Nfc read interrupt,gpio-clk-req interrupt
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Recommended properties:
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- interrupt-names: names of interrupts, should include "nfc_irq", used for reference
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Optional properties:
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- pinctrl-names, pinctrl-0, pincntrl-1: references to our pincntrl settings
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- clocks, clock-names: must contain the NQxxxx's core clock.
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- qcom,nq-esepwr: gpio to control power of secure element
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- qcom,clk-src: NFC clock for antenna
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Example:
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nq-nci@2b {
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compatible = "qcom,nq-nci";
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reg = <0x2b>;
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qcom,nq-irq = <&tlmm 29 0x00>;
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qcom,nq-ven = <&tlmm 30 0x00>;
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qcom,nq-firm = <&tlmm 93 0x00>;
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qcom,nq-clkreq = <&pm8998_gpios 21 0x00>;
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qcom,nq-esepwr = <&tlmm 116 0x00>;
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qcom,clk-src = "BBCLK2";
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interrupt-parent = <&tlmm>;
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interrupts = <29 0>;
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interrupt-names = "nfc_irq";
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pinctrl-names = "nfc_active","nfc_suspend";
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pinctrl-0 = <&nfc_int_active &nfc_disable_active>;
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pinctrl-1 = <&nfc_int_suspend &nfc_disable_suspend>;
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clocks = <&clock_rpm clk_bb_clk2_pin>;
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clock-names = "ref_clk";
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};
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