57 lines
1.9 KiB
Plaintext
57 lines
1.9 KiB
Plaintext
Marvell 8897/8997 (sd8897/sd8997) bluetooth SDIO devices
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------
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Required properties:
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- compatible : should be one of the following:
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* "marvell,sd8897-bt"
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* "marvell,sd8997-bt"
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Optional properties:
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- marvell,cal-data: Calibration data downloaded to the device during
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initialization. This is an array of 28 values(u8).
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- marvell,wakeup-pin: It represents wakeup pin number of the bluetooth chip.
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firmware will use the pin to wakeup host system (u16).
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- marvell,wakeup-gap-ms: wakeup gap represents wakeup latency of the host
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platform. The value will be configured to firmware. This
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is needed to work chip's sleep feature as expected (u16).
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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
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on this interrupt number. During system suspend, the irq will be
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enabled so that the bluetooth chip can wakeup host platform under
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certain condition. During system resume, the irq will be disabled
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to make sure unnecessary interrupt is not received.
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Example:
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IRQ pin 119 is used as system wakeup source interrupt.
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wakeup pin 13 and gap 100ms are configured so that firmware can wakeup host
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using this device side pin and wakeup latency.
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calibration data is also available in below example.
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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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btmrvl: bluetooth@2 {
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compatible = "marvell,sd8897-bt";
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reg = <2>;
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interrupt-parent = <&pio>;
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interrupts = <119 IRQ_TYPE_LEVEL_LOW>;
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marvell,cal-data = /bits/ 8 <
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0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
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0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
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0x00 0x00 0xf0 0x00>;
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marvell,wakeup-pin = /bits/ 16 <0x0d>;
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marvell,wakeup-gap-ms = /bits/ 16 <0x64>;
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};
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};
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