Add documentation how devicetree can be used to configure ath9k based devices. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> --- .../devicetree/bindings/net/wireless/qca,ath9k.txt | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt diff --git a/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt b/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt new file mode 100644 index 0000000..7c62c59 --- /dev/null +++ b/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt @@ -0,0 +1,59 @@ +* Qualcomm Atheros ath9k wireless devices + +This node provides properties for configuring the ath9k wireless device. The +node is expected to be specified as a child node of the PCI controller to +which the wireless chip is connected. + +Required properties: +- compatible: Should be "qca,ath9k" + +Optional properties: +- reg: Address and length of the register set for the device. +- qca,clk-25mhz: Defines that a 25MHz clock is used +- qca,no-eeprom: Indicates that there is no physical EEPROM connected to the + ath9k wireless chip (in this case the calibration / + EEPROM data will be loaded from userspace using the + kernel firmware loader). +- qca,check-eeprom-endianness: When enabled, the driver checks if the + endianness of the EEPROM (based on the two + magic bytes at the start of the EEPROM) + matches the host system's native endianness. + The data will be swapped accordingly if there + is a mismatch. + Leaving this disabled means that the EEPROM + data will be interpreted in the system's + native endianness, regardless of the magic + bytes. + Enable this option only when the magic bytes + are known to indicate the correct endianness + of the EEPROM data, because otherwise the + EEPROM data may be swapped and thus may be + parsed incorrectly. +- qca,disable-2ghz: Overrides the settings from the EEPROM and disables the + 2.4GHz band. Setting this property is only needed + when the RF circuit does not support the 2.4GHz band + while it is enabled nevertheless in the EEPROM. +- qca,disable-5ghz: Overrides the settings from the EEPROM and disables the + 5GHz band. Setting this property is only needed when + the RF circuit does not support the 5GHz band while + it is enabled nevertheless in the EEPROM. +- mac-address: See ethernet.txt in the parent directory +- local-mac-address: See ethernet.txt in the parent directory + +In this example, the node is defined as child node of the PCI controller. + +pci { + pcie@0 { + reg = <0 0 0 0 0>; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + device_type = "pci"; + + ath9k@0,0 { + compatible = "qca,ath9k"; + reg = <0 0 0 0 0>; + qca,disable-5ghz; + }; + }; +}; -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html