linux-kernel - [PATCH v3 1/2] dt: bindings: net: ath11k: add dt entry for XO calibration support

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Message-ID: <20230207103607.12213-2-quic_youghand@quicinc.com>
Date:   Tue, 7 Feb 2023 16:06:06 +0530
From:   Youghandhar Chintala <quic_youghand@...cinc.com>
To:     <kvalo@...nel.org>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <ath11k@...ts.infradead.org>, <linux-wireless@...r.kernel.org>,
        <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Youghandhar Chintala <quic_youghand@...cinc.com>
Subject: [PATCH v3 1/2] dt: bindings: net: ath11k: add dt entry for XO calibration support

Add dt binding to get XO calibration data support for Wi-Fi RF clock.

Retrieve the XO trim offset via system firmware (e.g., device tree),
especially in the case where the device doesn't have a useful EEPROM
on which to store the calibrated XO offset.
Calibrated XO offset is sent to firmware, which compensate the RF clock
drift by programing the XO trim register.

Signed-off-by: Youghandhar Chintala <quic_youghand@...cinc.com>
---
 .../devicetree/bindings/net/wireless/qcom,ath11k.yaml         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
index f7cf135aa37f..4745251e70d4 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
@@ -41,6 +41,10 @@ properties:
         * reg
         * reg-names
 
+  xo-cal-data:
+    description:
+      XO frequency offset to program the XO trim register
+
   qcom,ath11k-calibration-variant:
     $ref: /schemas/types.yaml#/definitions/string
     description:
-- 
2.38.0