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dt: bindings: add new dt entry for pre calibration in qcom, ath10k.txt

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There two things done in this patch,

1) Existing device tree entry 'qcom,ath10k-calibration-data' carries
   not only calibration data, it carries board specific data too.
   So, make appropriate update in doc.

2) ipq4019 wifi needs new devie tree entry to carry calibration
   data alone (called pre cal data, it doesn't include any other info).
   Using 'qcom,ath10k-calibration-data' for ipq4019 would alter
   the purpose of it. Hence, add new device tree entry called
   'qcom,ath10k-pre-calibration-data' to carry only pre calibration data.

Signed-off-by: Raja Mani <rmani@qti.qualcomm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Raja Mani 2016-03-18 11:44:21 +02:00 committed by Kalle Valo
parent 8866c72744
commit a47aaa69de
1 changed files with 16 additions and 7 deletions
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23
Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
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@ -5,12 +5,18 @@ Required properties:
* "qcom,ath10k" * "qcom,ath10k"
* "qcom,ipq4019-wifi" * "qcom,ipq4019-wifi"
PCI based devices uses compatible string "qcom,ath10k" and takes only PCI based devices uses compatible string "qcom,ath10k" and takes calibration
calibration data via "qcom,ath10k-calibration-data". Rest of the properties data along with board specific data via "qcom,ath10k-calibration-data".
are not applicable for PCI based devices. Rest of the properties are not applicable for PCI based devices.
AHB based devices (i.e. ipq4019) uses compatible string "qcom,ipq4019-wifi" AHB based devices (i.e. ipq4019) uses compatible string "qcom,ipq4019-wifi"
and also uses most of the properties defined in this doc. and also uses most of the properties defined in this doc (except
"qcom,ath10k-calibration-data"). It uses "qcom,ath10k-pre-calibration-data"
to carry pre calibration data.
In general, entry "qcom,ath10k-pre-calibration-data" and
"qcom,ath10k-calibration-data" conflict with each other and only one
can be provided per device.
Optional properties: Optional properties:
- reg: Address and length of the register set for the device. - reg: Address and length of the register set for the device.
@ -35,8 +41,11 @@ Optional properties:
- qcom,msi_addr: MSI interrupt address. - qcom,msi_addr: MSI interrupt address.
- qcom,msi_base: Base value to add before writing MSI data into - qcom,msi_base: Base value to add before writing MSI data into
MSI address register. MSI address register.
- qcom,ath10k-calibration-data : calibration data as an array, the - qcom,ath10k-calibration-data : calibration data + board specific data
length can vary between hw versions as an array, the length can vary between
hw versions.
- qcom,ath10k-pre-calibration-data : pre calibration data as an array,
the length can vary between hw versions.
Example (to supply the calibration data alone): Example (to supply the calibration data alone):
@ -105,5 +114,5 @@ wifi0: wifi@a000000 {
"legacy"; "legacy";
qcom,msi_addr = <0x0b006040>; qcom,msi_addr = <0x0b006040>;
qcom,msi_base = <0x40>; qcom,msi_base = <0x40>;
qcom,ath10k-calibration-data = [ 01 02 03 ... ]; qcom,ath10k-pre-calibration-data = [ 01 02 03 ... ];
}; };