linux-kernel - [PATCH 1/2] dt-bindings: net: wireless: ath11k: add new DT entry for board ID

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Message-Id: <20220621135339.1269409-1-robimarko@gmail.com>
Date:   Tue, 21 Jun 2022 15:53:38 +0200
From:   Robert Marko <robimarko@...il.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, ath11k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Robert Marko <robimarko@...il.com>
Subject: [PATCH 1/2] dt-bindings: net: wireless: ath11k: add new DT entry for board ID

bus + qmi-chip-id + qmi-board-id and optionally the variant are currently
used for identifying the correct board data file.

This however is sometimes not enough as all of the IPQ8074 boards that I
have access to dont have the qmi-board-id properly fused and simply return
the default value of 0xFF.

So, to provide the correct qmi-board-id add a new DT property that allows
the qmi-board-id to be overridden from DTS in cases where its not set.
This is what vendors have been doing in the stock firmwares that were
shipped on boards I have.

Signed-off-by: Robert Marko <robimarko@...il.com>
---
 .../devicetree/bindings/net/wireless/qcom,ath11k.yaml     | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
index a677b056f112..fe6aafdab9d4 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
@@ -41,6 +41,14 @@ properties:
         * reg
         * reg-names
 
+  qcom,ath11k-board-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Board ID to override the one returned by the firmware or the default
+      0xff if it was not set by the vendor at all.
+      It is used along the ath11k-calibration-variant to mach the correct
+      calibration data from board-2.bin.
+
   qcom,ath11k-calibration-variant:
     $ref: /schemas/types.yaml#/definitions/string
     description:
-- 
2.36.1