linux-kernel - [PATCH 0/3] Support tuning the RX sampling swap of the MAC.

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Message-ID: <20241225-support_10m100m-v1-0-4b52ef48b488@quicinc.com>
Date: Wed, 25 Dec 2024 18:04:44 +0800
From: Yijie Yang <quic_yijiyang@...cinc.com>
To: Vinod Koul <vkoul@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
        "David
 S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        "Jakub
 Kicinski" <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>
CC: <netdev@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Yijie Yang
	<quic_yijiyang@...cinc.com>
Subject: [PATCH 0/3] Support tuning the RX sampling swap of the MAC.

The Ethernet MAC requires precise sampling times at Rx, but signals on the
Rx side after transmission on the board may vary due to different hardware
layouts. The RGMII_CONFIG2_RX_PROG_SWAP can be used to switch the sampling
occasion between the rising edge and falling edge of the clock to meet the
sampling requirements. Consequently, the configuration of this bit in the
Ethernet MAC can vary between boards, even if they are of the same version.
It should be adjustable rather than simply determined by the version. For
example, the MAC version is less than 3, but it needs to enable this bit.
Therefore, this patch set introduces a new flag for each board to control
whether to open it.
The dependency patch set detailed below has introduced and enabled an
Ethernet node that supports 1G speed on qcs615. The current patch set now
allows tuning of the MAC's RX swap, thereby supporting 10M and 100M speeds.

Signed-off-by: Yijie Yang <quic_yijiyang@...cinc.com>
---
This patch series depends on below patch series:
https://lore.kernel.org/all/20241118-dts_qcs615-v2-0-e62b924a3cbd@quicinc.com/

---
Yijie Yang (3):
      dt-bindings: net: stmmac: Tune rx sampling occasion
      net: stmmac: qcom-ethqos: Enable RX programmable swap on qcs615
      arm64: dts: qcom: qcs615-ride: Enable RX programmable swap on qcs615-ride

 .../devicetree/bindings/net/qcom,ethqos.yaml       |  6 ++++
 arch/arm64/boot/dts/qcom/qcs615-ride.dts           |  1 +
 .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c    | 36 ++++++++++++----------
 3 files changed, 27 insertions(+), 16 deletions(-)
---
base-commit: 532900dbb7c1be5c9e6aab322d9af3a583888f25
change-id: 20241217-support_10m100m-16239916fa12
prerequisite-message-id: <20241118-dts_qcs615-v2-0-e62b924a3cbd@...cinc.com>
prerequisite-patch-id: ab55582f3bfce00f051fddd75bb66b2ef5e0677d
prerequisite-patch-id: 514acd303f0ef816ff6e61e59ecbaaff7f1b06ec

Best regards,
-- 
Yijie Yang <quic_yijiyang@...cinc.com>