linux-kernel - [PATCH net-next 13/16] dt-bindings: net: dwmac: Fix MTL Tx Queue props description

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Message-ID: <20230313225103.30512-14-Sergey.Semin@baikalelectronics.ru>
Date:   Tue, 14 Mar 2023 01:51:00 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Christian Marangi <ansuelsmth@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Biao Huang <biao.huang@...iatek.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 13/16] dt-bindings: net: dwmac: Fix MTL Tx Queue props description

Invalid MTL Tx Queues DT-properties description was added right at the
initial DCB/AVB features patch. Most likely due to copy-paste mistake the
text currently matches to what is specified for the AXI-bus config
properties. Let's fix that by providing correct descriptions for MTL Tx
Queue DT-properties utilized for the AVB feature (CBS algorithm) tuning.

Fixes: 19d918731797 ("net: stmmac: configuration of CBS in case of a TX AVB queue")
Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 .../devicetree/bindings/net/snps,dwmac.yaml   | 20 +++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 2ebf7995426b..69be39d55403 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -321,25 +321,37 @@ properties:
               available in this queue.
           snps,send_slope:
             $ref: /schemas/types.yaml#/definitions/uint32
-            description: enable Low Power Interface
+            description:
+              Send-Slope credit value subtracted from the accumulated credit
+              in the Queue for the Audio/Video bridging traffic. This is the
+              rate of the credit change in bits per cycle (40 ns, 8 ns and
+              3.2 ns for 100 Mbps, 1000 Mbps and 2.5/10 Gbps respectively).
             minimum: 0
             maximum: 0x3FFF
 
           snps,idle_slope:
             $ref: /schemas/types.yaml#/definitions/uint32
-            description: unlock on WoL
+            description:
+              Idle-Slope credit value added to the accumulated credit in the
+              Queue with the Audio/Video bridging enabled. This is the
+              rate of the credit change in bits per cycle (40 ns, 8 ns and
+              3.2 ns for 100 Mbps, 1000 Mbps and 2.5/10 Gbps respectively).
             minimum: 0
             maximum: 0x8000
 
           snps,high_credit:
             $ref: /schemas/types.yaml#/definitions/uint32
-            description: max write outstanding req. limit
+            description:
+              Maximum value accumulated in the credit parameter for the
+              Audio/Video bridging feature (specified in bits scaled by 1,024).
             minimum: 0
             maximum: 0x1FFFFFFF
 
           snps,low_credit:
             $ref: /schemas/types.yaml#/definitions/uint32
-            description: max read outstanding req. limit
+            description:
+              Minimum value accumulated in the credit parameter for the
+              Audio/Video bridging feature (specified in bits scaled by 1,024).
             minimum: 0
             maximum: 0x1FFFFFFF
 
-- 
2.39.2