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Message-Id: <20251008-qcom-sa8255p-emac-v2-1-92bc29309fce@linaro.org>
Date: Wed, 08 Oct 2025 10:17:48 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Richard Cochran <richardcochran@...il.com>,
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>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Vinod Koul <vkoul@...nel.org>, Giuseppe Cavallaro <peppe.cavallaro@...com>,
Jose Abreu <joabreu@...opsys.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH v2 1/8] dt-bindings: net: qcom: document the ethqos device
for SCMI-based systems
From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Describe the firmware-managed variant of the QCom DesignWare MAC. As the
properties here differ a lot from the HLOS-managed variant, lets put it
in a separate file.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
.../devicetree/bindings/net/qcom,ethqos-scmi.yaml | 101 +++++++++++++++++++++
.../devicetree/bindings/net/snps,dwmac.yaml | 5 +-
MAINTAINERS | 1 +
3 files changed, 106 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos-scmi.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos-scmi.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..0a9cc789085e8bc94d44adc9da982b66071d1e79
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/qcom,ethqos-scmi.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/qcom,ethqos-scmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Ethernet ETHQOS device (firmware managed)
+
+maintainers:
+ - Bjorn Andersson <andersson@...nel.org>
+ - Konrad Dybcio <konradybcio@...nel.org>
+ - Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
+
+description:
+ dwmmac based Qualcomm ethernet devices which support Gigabit
+ ethernet (version v2.3.0 and onwards) with clocks, interconnects, etc.
+ managed by firmware
+
+allOf:
+ - $ref: snps,dwmac.yaml#
+
+properties:
+ compatible:
+ const: qcom,sa8255p-ethqos
+
+ reg:
+ maxItems: 2
+
+ reg-names:
+ items:
+ - const: stmmaceth
+ - const: rgmii
+
+ interrupts:
+ items:
+ - description: Combined signal for various interrupt events
+ - description: The interrupt that occurs when HW safety error triggered
+
+ interrupt-names:
+ items:
+ - const: macirq
+ - const: sfty
+
+ power-domains:
+ minItems: 3
+
+ power-domain-names:
+ items:
+ - const: power_core
+ - const: power_mdio
+ - const: perf_serdes
+
+ iommus:
+ maxItems: 1
+
+ dma-coherent: true
+
+ phys: true
+
+ phy-names:
+ const: serdes
+
+required:
+ - compatible
+ - reg-names
+ - power-domains
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ ethernet: ethernet@...0000 {
+ compatible = "qcom,sa8255p-ethqos";
+ reg = <0x23040000 0x10000>,
+ <0x23056000 0x100>;
+ reg-names = "stmmaceth", "rgmii";
+
+ iommus = <&apps_smmu 0x120 0x7>;
+
+ interrupts = <GIC_SPI 946 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 782 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq", "sfty";
+
+ dma-coherent;
+
+ snps,tso;
+ snps,pbl = <32>;
+ rx-fifo-depth = <16384>;
+ tx-fifo-depth = <16384>;
+
+ phy-handle = <ðernet_phy>;
+ phy-mode = "2500base-x";
+
+ snps,mtl-rx-config = <&mtl_rx_setup1>;
+ snps,mtl-tx-config = <&mtl_tx_setup1>;
+
+ power-domains = <&scmi8_pd 0>, <&scmi8_pd 1>, <&scmi8_dvfs 0>;
+ power-domain-names = "power_core", "power_mdio","perf_serdes";
+ };
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 658c004e6a5c836bcc1dca109a251e27af6e23ca..5ef5c28d0337050268e76cdd787b4cd6de7fb0e2 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -71,6 +71,7 @@ properties:
- loongson,ls7a-dwmac
- nxp,s32g2-dwmac
- qcom,qcs404-ethqos
+ - qcom,sa8255p-ethqos
- qcom,sa8775p-ethqos
- qcom,sc8280xp-ethqos
- qcom,sm8150-ethqos
@@ -176,7 +177,8 @@ properties:
- const: ahb
power-domains:
- maxItems: 1
+ minItems: 1
+ maxItems: 3
mac-mode:
$ref: ethernet-controller.yaml#/properties/phy-connection-type
@@ -639,6 +641,7 @@ allOf:
- ingenic,x1830-mac
- ingenic,x2000-mac
- qcom,qcs404-ethqos
+ - qcom,sa8255p-ethqos
- qcom,sa8775p-ethqos
- qcom,sc8280xp-ethqos
- qcom,sm8150-ethqos
diff --git a/MAINTAINERS b/MAINTAINERS
index 3773c74b31d6d9d4c2f9ba53c4b3ecf3e4e2dd79..cb097a1369d08e708152a3a41b610b35273cebea 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -21096,6 +21096,7 @@ M: Vinod Koul <vkoul@...nel.org>
L: netdev@...r.kernel.org
L: linux-arm-msm@...r.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/net/qcom,ethqos-scmi.yaml
F: Documentation/devicetree/bindings/net/qcom,ethqos.yaml
F: drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
--
2.48.1
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