From 0065d1c5acdb60ee2c0e54585a29243718465bb7 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Tue, 26 Apr 2016 06:57:26 -0700 Subject: dt: bindings: add MARVELL's bt-sd8xxx wireless device Add device tree binding documentation for MARVELL's bluetooth sdio (sd8897 and sd8997) chip. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Acked-by: Rob Herring Signed-off-by: Marcel Holtmann --- .../devicetree/bindings/net/marvell-bt-sd8xxx.txt | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt (limited to 'Documentation/devicetree/bindings/net') diff --git a/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt new file mode 100644 index 000000000000..14aa6cf58201 --- /dev/null +++ b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt @@ -0,0 +1,56 @@ +Marvell 8897/8997 (sd8897/sd8997) bluetooth SDIO devices +------ + +Required properties: + + - compatible : should be one of the following: + * "marvell,sd8897-bt" + * "marvell,sd8997-bt" + +Optional properties: + + - marvell,cal-data: Calibration data downloaded to the device during + initialization. This is an array of 28 values(u8). + + - marvell,wakeup-pin: It represents wakeup pin number of the bluetooth chip. + firmware will use the pin to wakeup host system. + - marvell,wakeup-gap-ms: wakeup gap represents wakeup latency of the host + platform. The value will be configured to firmware. This + is needed to work chip's sleep feature as expected. + - interrupt-parent: phandle of the parent interrupt controller + - interrupts : interrupt pin number to the cpu. Driver will request an irq based + on this interrupt number. During system suspend, the irq will be + enabled so that the bluetooth chip can wakeup host platform under + certain condition. During system resume, the irq will be disabled + to make sure unnecessary interrupt is not received. + +Example: + +IRQ pin 119 is used as system wakeup source interrupt. +wakeup pin 13 and gap 100ms are configured so that firmware can wakeup host +using this device side pin and wakeup latency. +calibration data is also available in below example. + +&mmc3 { + status = "okay"; + vmmc-supply = <&wlan_en_reg>; + bus-width = <4>; + cap-power-off-card; + keep-power-in-suspend; + + #address-cells = <1>; + #size-cells = <0>; + btmrvl: bluetooth@2 { + compatible = "marvell,sd8897-bt"; + reg = <2>; + interrupt-parent = <&pio>; + interrupts = <119 IRQ_TYPE_LEVEL_LOW>; + + marvell,cal-data = /bits/ 8 < + 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02 + 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00 + 0x00 0x00 0xf0 0x00>; + marvell,wakeup-pin = <0x0d>; + marvell,wakeup-gap-ms = <0x64>; + }; +}; -- cgit v1.2.3