64 lines
2.2 KiB
Plaintext
64 lines
2.2 KiB
Plaintext
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Marvell 8897/8997 (sd8897/sd8997) SDIO devices
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------
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This node provides properties for controlling the marvell sdio wireless device.
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The node is expected to be specified as a child node to the SDIO controller that
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connects the device to the system.
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Required properties:
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- compatible : should be one of the following:
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* "marvell,sd8897"
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* "marvell,sd8997"
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Optional properties:
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- marvell,caldata* : A series of properties with marvell,caldata prefix,
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represent calibration data downloaded to the device during
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initialization. This is an array of unsigned 8-bit values.
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the properties should follow below property name and
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corresponding array length:
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"marvell,caldata-txpwrlimit-2g" (length = 566).
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"marvell,caldata-txpwrlimit-5g-sub0" (length = 502).
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"marvell,caldata-txpwrlimit-5g-sub1" (length = 688).
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"marvell,caldata-txpwrlimit-5g-sub2" (length = 750).
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"marvell,caldata-txpwrlimit-5g-sub3" (length = 502).
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- marvell,wakeup-pin : a wakeup pin number of wifi chip which will be configured
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to firmware. Firmware will wakeup the host using this pin
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during suspend/resume.
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- interrupt-parent: phandle of the parent interrupt controller
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- interrupts : interrupt pin number to the cpu. driver will request an irq based on
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this interrupt number. during system suspend, the irq will be enabled
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so that the wifi chip can wakeup host platform under certain condition.
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during system resume, the irq will be disabled to make sure
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unnecessary interrupt is not received.
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Example:
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Tx power limit calibration data is configured in below example.
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The calibration data is an array of unsigned values, the length
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can vary between hw versions.
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IRQ pin 38 is used as system wakeup source interrupt. wakeup pin 3 is configured
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so that firmware can wakeup host using this device side pin.
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&mmc3 {
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status = "okay";
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vmmc-supply = <&wlan_en_reg>;
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bus-width = <4>;
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cap-power-off-card;
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keep-power-in-suspend;
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#address-cells = <1>;
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#size-cells = <0>;
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mwifiex: wifi@1 {
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compatible = "marvell,sd8897";
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reg = <1>;
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interrupt-parent = <&pio>;
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interrupts = <38 IRQ_TYPE_LEVEL_LOW>;
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marvell,caldata_00_txpwrlimit_2g_cfg_set = /bits/ 8 <
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0x01 0x00 0x06 0x00 0x08 0x02 0x89 0x01>;
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marvell,wakeup-pin = <3>;
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};
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};
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