Commit f3f58799 authored Dec 20, 2018 by Bhagavathi Perumal S Committed by Kalle Valo Dec 20, 2018

dt-bindings: net: ath10k: add new dt entry to identify external FEM

This adds new dt entry ext-fem-name, it is used by ath10k driver
to select correct timing parameters and configure it in target wifi hardware.
The Front End Module(FEM) normally includes tx power amplifier(PA) and
rx low noise amplifier(LNA). The default timing parameters like tx end to
PA off timing values were fine tuned for internal FEM used in reference
design. And these timing values can not be same if ODM modifies hardware
design with different external FEM. This DT entry helps to choose correct
timing values in driver if different external FEM hardware used.

Signed-off-by: Bhagavathi Perumal S <bperumal@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

parent e5404969

Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt

+8 −1

Original line number	Diff line number	Diff line
		@@ -75,8 +75,14 @@ Optional properties:
		Usage: optional
		Value type: <prop-encoded-array>
		Definition: A list of phandle and IOMMU specifier pairs.
		- ext-fem-name:
		Usage: Optional
		Value type: string
		Definition: Name of external front end module used. Some valid FEM names
		for example: "microsemi-lx5586", "sky85703-11"
		and "sky85803" etc.

		Example (to supply the calibration data alone):
		Example (to supply PCI based wifi block details):

		In this example, the node is defined as child node of the PCI controller.

		@@ -91,6 +97,7 @@ pci {
		wifi@0,0 {
		reg = <0 0 0 0 0>;
		qcom,ath10k-calibration-data = [ 01 02 03 ... ];
		ext-fem-name = "microsemi-lx5586";
		};
		};
		};