linux-kernel - [PATCH net-next 16/16] dt-bindings: net: dwmac: Add MTL Tx queue CBS-algo props dependencies

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Date:   Tue, 14 Mar 2023 01:51:03 +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>
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 16/16] dt-bindings: net: dwmac: Add MTL Tx queue CBS-algo props dependencies

Currently the CBS algorithm specific properties could be used
unconditionally in the MTL Tx queue sub-nodes. It's definitely wrong from
the correct Tx queue description point of view. Let's fix that in a way so
the "snps,send_slope", "snps,idle_slope", "snps,high_credit" and
"snps,low_credit" properties would be allowed only if the CBS TC algorithm
is enabled for the MTL Tx queue.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 Documentation/devicetree/bindings/net/snps,dwmac.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 9df301cf674e..c6a9b44650c3 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -322,7 +322,12 @@ properties:
                 - snps,dcb-algorithm
                 - snps,avb-algorithm
 
+        # Credit Base Shaper is configurable for AVB algo only
         dependencies:
+          snps,send_slope: ["snps,avb-algorithm"]
+          snps,idle_slope: ["snps,avb-algorithm"]
+          snps,high_credit: ["snps,avb-algorithm"]
+          snps,low_credit: ["snps,avb-algorithm"]
           snps,weight: ["snps,dcb-algorithm"]
 
     additionalProperties: false
-- 
2.39.2