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From:   Andrew Halaney <ahalaney@redhat.com>
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        Andrew Halaney <ahalaney@redhat.com>
Subject: [PATCH net-next v4 03/12] dt-bindings: net: qcom,ethqos: Convert bindings to yaml
Date:   Tue, 11 Apr 2023 15:04:00 -0500
Message-Id: <20230411200409.455355-4-ahalaney@redhat.com>
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From: Bhupesh Sharma <bhupesh.sharma@linaro.org>

Convert Qualcomm ETHQOS Ethernet devicetree binding to YAML.
In doing so add a new property for iommus since newer platforms support
using one, and without such make dtbs_check fails on them.

While at it, also update the MAINTAINERS file to point to the yaml
version of the bindings.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
[halaney: Remove duplicated properties, add MAINTAINERS and iommus]
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v3:
    * None

Changes since v2:
    * Add Krzysztof's Reviewed-by tag

Changes since v1:
    * Drop redundant wording in binding description (Krzysztof)
    * Document iommus addition explicitly in commit message (Krzysztof)

 .../devicetree/bindings/net/qcom,ethqos.txt   |  66 -----------
 .../devicetree/bindings/net/qcom,ethqos.yaml  | 110 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 3 files changed, 111 insertions(+), 67 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.txt
 create mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.yaml

diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.txt b/Documentation/devicetree/bindings/net/qcom,ethqos.txt
deleted file mode 100644
index 1f5746849a71..000000000000
--- a/Documentation/devicetree/bindings/net/qcom,ethqos.txt
+++ /dev/null
@@ -1,66 +0,0 @@
-Qualcomm Ethernet ETHQOS device
-
-This documents dwmmac based ethernet device which supports Gigabit
-ethernet for version v2.3.0 onwards.
-
-This device has following properties:
-
-Required properties:
-
-- compatible: Should be one of:
-		"qcom,qcs404-ethqos"
-		"qcom,sm8150-ethqos"
-
-- reg: Address and length of the register set for the device
-
-- reg-names: Should contain register names "stmmaceth", "rgmii"
-
-- clocks: Should contain phandle to clocks
-
-- clock-names: Should contain clock names "stmmaceth", "pclk",
-		"ptp_ref", "rgmii"
-
-- interrupts: Should contain phandle to interrupts
-
-- interrupt-names: Should contain interrupt names "macirq", "eth_lpi"
-
-Rest of the properties are defined in stmmac.txt file in same directory
-
-
-Example:
-
-ethernet: ethernet@7a80000 {
-	compatible = "qcom,qcs404-ethqos";
-	reg = <0x07a80000 0x10000>,
-		<0x07a96000 0x100>;
-	reg-names = "stmmaceth", "rgmii";
-	clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";
-	clocks = <&gcc GCC_ETH_AXI_CLK>,
-		<&gcc GCC_ETH_SLAVE_AHB_CLK>,
-		<&gcc GCC_ETH_PTP_CLK>,
-		<&gcc GCC_ETH_RGMII_CLK>;
-	interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
-			<GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
-	interrupt-names = "macirq", "eth_lpi";
-	snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;
-	snps,reset-active-low;
-
-	snps,txpbl = <8>;
-	snps,rxpbl = <2>;
-	snps,aal;
-	snps,tso;
-
-	phy-handle = <&phy1>;
-	phy-mode = "rgmii";
-
-	mdio {
-		#address-cells = <0x1>;
-		#size-cells = <0x0>;
-		compatible = "snps,dwmac-mdio";
-		phy1: phy@4 {
-			device_type = "ethernet-phy";
-			reg = <0x4>;
-		};
-	};
-
-};
diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
new file mode 100644
index 000000000000..88234a2010b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/qcom,ethqos.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Ethernet ETHQOS device
+
+maintainers:
+  - Bhupesh Sharma <bhupesh.sharma@linaro.org>
+
+description:
+  dwmmac based Qualcomm ethernet devices which support Gigabit
+  ethernet (version v2.3.0 and onwards).
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,qcs404-ethqos
+      - qcom,sm8150-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 Rx exits the LPI state
+
+  interrupt-names:
+    items:
+      - const: macirq
+      - const: eth_lpi
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: stmmaceth
+      - const: pclk
+      - const: ptp_ref
+      - const: rgmii
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - reg-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,gcc-qcs404.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    ethernet: ethernet@7a80000 {
+      compatible = "qcom,qcs404-ethqos";
+      reg = <0x07a80000 0x10000>,
+            <0x07a96000 0x100>;
+      reg-names = "stmmaceth", "rgmii";
+      clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";
+      clocks = <&gcc GCC_ETH_AXI_CLK>,
+               <&gcc GCC_ETH_SLAVE_AHB_CLK>,
+               <&gcc GCC_ETH_PTP_CLK>,
+               <&gcc GCC_ETH_RGMII_CLK>;
+      interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq", "eth_lpi";
+
+      rx-fifo-depth = <4096>;
+      tx-fifo-depth = <4096>;
+
+      snps,tso;
+      snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;
+      snps,reset-active-low;
+      snps,reset-delays-us = <0 10000 10000>;
+
+      pinctrl-names = "default";
+      pinctrl-0 = <&ethernet_defaults>;
+
+      phy-handle = <&phy1>;
+      phy-mode = "rgmii";
+      mdio {
+        #address-cells = <0x1>;
+        #size-cells = <0x0>;
+
+        compatible = "snps,dwmac-mdio";
+        phy1: phy@4 {
+          compatible = "ethernet-phy-ieee802.3-c22";
+          device_type = "ethernet-phy";
+          reg = <0x4>;
+
+          #phy-cells = <0>;
+        };
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 0b19a3fb266c..fdcef63fa9a0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17304,7 +17304,7 @@ M:	Vinod Koul <vkoul@kernel.org>
 R:	Bhupesh Sharma <bhupesh.sharma@linaro.org>
 L:	netdev@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/net/qcom,ethqos.txt
+F:	Documentation/devicetree/bindings/net/qcom,ethqos.yaml
 F:	drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
 
 QUALCOMM FASTRPC DRIVER
-- 
2.39.2