linux-kernel - [PATCH net-next 07/16] dt-bindings: net: dwmac: Add Tx/Rx clock sources

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Date:   Tue, 14 Mar 2023 01:50:54 +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>, Rob Herring <robh@...nel.org>
Subject: [PATCH net-next 07/16] dt-bindings: net: dwmac: Add Tx/Rx clock sources

Generic DW *MAC can be connected to an external Transmit and Receive clock
generators. Add the corresponding clocks description and clock-names to
the generic bindings schema so new DW *MAC-based bindings wouldn't declare
its own names of the same clocks.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/net/snps,dwmac.yaml        | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 3e3fbc1dfafa..01f385867c3a 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -47,6 +47,18 @@ properties:
           MCI, CSR and SMA interfaces run on this clock. If it's omitted,
           the CSR interfaces are considered as synchronous to the system
           clock domain.
+      - description:
+          GMAC Tx clock or so called Transmit clock. The clock is supplied
+          by an external with respect to the DW MAC clock generator.
+          The clock source and its frequency depends on the DW MAC xMII mode.
+          In case if it's supplied by PHY/SerDes this property can be
+          omitted.
+      - description:
+          GMAC Rx clock or so called Receive clock. The clock is supplied
+          by an external with respect to the DW MAC clock generator.
+          The clock source and its frequency depends on the DW MAC xMII mode.
+          In case if it's supplied by PHY/SerDes or it's synchronous to
+          the Tx clock this property can be omitted.
       - description:
           PTP reference clock. This clock is used for programming the
           Timestamp Addend Register. If not passed then the system
@@ -60,6 +72,8 @@ properties:
       enum:
         - stmmaceth
         - pclk
+        - tx
+        - rx
         - ptp_ref
 
   resets:
-- 
2.39.2