74 lines
2.8 KiB
Plaintext
74 lines
2.8 KiB
Plaintext
Silicon Labs Si4705 FM radio
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Silabs Si4705 is a FM radio chip which sits on the i2c bus.
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This node must live under i2c controller.
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Required properties:
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- compatible : should be "silabs,si4705"
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- reg : i2c slave address of the device
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- interrupt-parent : parent of interrupt
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- interrupts : interrupt to indicate completion of on going tune, seek etc.
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- silabs,int-gpio : interrupt gpio
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- silabs,reset-gpio : reset gpio
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- silabs,status-gpio : status gpio
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- pinctrl-names : This should be defined if a target uses pinctrl framework.
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See "pinctrl" in Documentation/devicetree/bindings/pinctrl/msm-pinctrl.txt.
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It should specify the names of the configs that pinctrl can install in driver.
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Following are the pinctrl configs that can be installed:
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"pmx_fm_active" : Active configuration of pins, this should specify active
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config defined in pin groups of interrupt and reset gpio.
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"pmx_fm_suspend" : Disabled configuration of pins, this should specify sleep
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config defined in pin groups of interrupt and reset gpio.
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- pinctrl : Active and suspend configuration of interrupt and reset pins.
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- interrupt-names : Name of interrupt, must be "silabs_fm_int"
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Optional properties:
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- vdd-supply : Digital power supply needed to power device
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- va-supply : Analog power supply needed to power device
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- silabs,va-supply-voltage : specifies VA voltage levels for supply.
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Should be specified in pair (min, max), units uV.
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- silabs,vdd-supply-voltage : specifies VDD voltage levels for supply.
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Should be specified in pairs (min, max), units uV.
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Example:
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i2c_5: i2c@f9967000 { /* BLSP2 QUP5 */
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compatible = "qcom,i2c-msm-v2";
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#address-cells = <1>;
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#size-cells = <0>;
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reg-names = "qup_phys_addr", "bam_phys_addr";
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reg = <0xf9967000 0x1000>,
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<0xf9944000 0x19000>;
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interrupt-names = "qup_irq", "bam_irq";
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interrupts = <0 105 0>, <0 239 0>;
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qcom,clk-freq-out = <100000>;
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qcom,clk-freq-in = <19200000>;
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clock-names = "iface_clk", "core_clk";
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clocks = <&clock_gcc clk_gcc_blsp2_ahb_clk>,
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<&clock_gcc clk_gcc_blsp2_qup5_i2c_apps_clk>;
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pinctrl-names = "i2c_active", "i2c_sleep";
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pinctrl-0 = <&i2c_5_active>;
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pinctrl-1 = <&i2c_5_sleep>;
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silabs4705@11 { /* SiLabs FM chip, slave id 0x11*/
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status = "ok";
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compatible = "silabs,si4705";
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reg = <0x11>;
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vdd-supply = <&pm8994_s4>;
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silabs,va-supply-voltage = <3300000 3300000>;
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silabs,vdd-supply-voltage = <1800000 1800000>;
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pinctrl-names = "pmx_fm_active","pmx_fm_suspend";
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pinctrl-0 = <&fm_int_active &fm_rst_active>;
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pinctrl-1 = <&fm_int_suspend &fm_rst_suspend>;
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silabs,reset-gpio = <&msm_gpio 62 0>;
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silabs,int-gpio = <&msm_gpio 9 0>;
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silabs,status-gpio = <&msm_gpio 11 0>;
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interrupt-parent = <&msm_gpio>;
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interrupts = <9 2>;
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interrupt-names = "silabs_fm_int";
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};
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};
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