[PATCH v3 0/5] allwinner: Add EMAC0 support to A523 variant SoC

[PATCH v3 0/5] allwinner: Add EMAC0 support to A523 variant SoC

[Yixun Lan]

This patch series is trying to add EMAC0 ethernet MAC support
to the A523 variant SoCs, including A523, A527/T527 chips.

This MAC0 is compatible to previous A64 SoC, so introduce a new DT
compatible but make it as a fallback to A64's compatible.

In this version, the PHYRSTB pin which routed to external phy
has not been populated in DT. It's kind of optional for now,
but we probably should handle it well later.

I've tested only on Radxa A5E board.

Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
Changes in v3:
- collect tags
- update commit prefix
- add bias-disable to pins
- Link to v2: https://lore.kernel.org/r/20250424-01-sun55i-emac0-v2-0-833f04d23e1d@gentoo.org

Changes in v2:
- add ethernet alias node
- add phy-supply
- change to rgmii-id
- drop PH13, rename pin name
- drop bias-pull-up
- collect Review tags
- improve commit log
- Link to v1: https://lore.kernel.org/r/20250423-01-sun55i-emac0-v1-0-46ee4c855e0a@gentoo.org

---
Yixun Lan (5):
      dt-bindings: sram: sunxi-sram: Add A523 compatible
      dt-bindings: net: sun8i-emac: Add A523 EMAC0 compatible
      arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC
      arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board
      arm64: dts: allwinner: t527: add EMAC0 to Avaota-A1 board

 .../bindings/net/allwinner,sun8i-a83t-emac.yaml    |  1 +
 .../sram/allwinner,sun4i-a10-system-control.yaml   |  1 +
 arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi     | 41 ++++++++++++++++++++++
 .../boot/dts/allwinner/sun55i-a527-radxa-a5e.dts   | 19 ++++++++++
 .../boot/dts/allwinner/sun55i-t527-avaota-a1.dts   | 19 ++++++++++
 5 files changed, 81 insertions(+)
---
base-commit: 69714722df19a7d9e81b7e8f208ca8f325af4502
change-id: 20250423-01-sun55i-emac0-5e395a80f6bf

Best regards,
-- 
Yixun Lan

[PATCH v3 1/5] dt-bindings: sram: sunxi-sram: Add A523 compatible

[Yixun Lan]

The Allwinner A523 family of SoCs have their "system control" registers
compatible to the A64 SoC, so add the new SoC specific compatible string.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
 .../devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml b/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml
index a7236f7db4ec34d44c4e2268f76281ef8ed83189..e7f7cf72719ea884d48fff69620467ff2834913b 100644
--- a/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml
+++ b/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml
@@ -50,6 +50,7 @@ properties:
           - enum:
               - allwinner,sun50i-a100-system-control
               - allwinner,sun50i-h6-system-control
+              - allwinner,sun55i-a523-system-control
           - const: allwinner,sun50i-a64-system-control
 
   reg:

-- 
2.49.0

[PATCH v3 2/5] dt-bindings: net: sun8i-emac: Add A523 EMAC0 compatible

[Yixun Lan]

Allwinner A523 SoC variant (A527/T527) contains an "EMAC0" Ethernet
MAC compatible to the A64 version.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
 Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 7fe0352dff0f8d74a08f3f6aac5450ad685e6a08..7b6a2fde8175353621367c8d8f7a956e4aac7177 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -23,6 +23,7 @@ properties:
               - allwinner,sun20i-d1-emac
               - allwinner,sun50i-h6-emac
               - allwinner,sun50i-h616-emac0
+              - allwinner,sun55i-a523-emac0
           - const: allwinner,sun50i-a64-emac
 
   reg:

-- 
2.49.0

[PATCH v3 3/5] arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC

[Yixun Lan]

Add EMAC0 ethernet MAC support which found on A523 variant SoCs,
including the A527/T527 chips. MAC0 is compatible to the A64 chip which
requires an external PHY. This patch only add RGMII pins for now.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
 arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 41 ++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index ee485899ba0af69f32727a53de20051a2e31be1d..8b7cbc2e78f500e1dc704e9a6bee87e70285509f 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -126,6 +126,16 @@ pio: pinctrl@2000000 {
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
+			rgmii0_pins: rgmii0-pins {
+				pins = "PH0", "PH1", "PH2", "PH3", "PH4",
+				       "PH5", "PH6", "PH7", "PH9", "PH10",
+				       "PH14", "PH15", "PH16", "PH17", "PH18";
+				allwinner,pinmux = <5>;
+				function = "emac0";
+				drive-strength = <40>;
+				bias-disable;
+			};
+
 			mmc0_pins: mmc0-pins {
 				pins = "PF0" ,"PF1", "PF2", "PF3", "PF4", "PF5";
 				allwinner,pinmux = <2>;
@@ -409,6 +419,15 @@ i2c5: i2c@2503400 {
 			#size-cells = <0>;
 		};
 
+		syscon: syscon@3000000 {
+			compatible = "allwinner,sun55i-a523-system-control",
+				     "allwinner,sun50i-a64-system-control";
+			reg = <0x03000000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+		};
+
 		gic: interrupt-controller@3400000 {
 			compatible = "arm,gic-v3";
 			#address-cells = <1>;
@@ -521,6 +540,28 @@ ohci1: usb@4200400 {
 			status = "disabled";
 		};
 
+		emac0: ethernet@4500000 {
+			compatible = "allwinner,sun55i-a523-emac0",
+				     "allwinner,sun50i-a64-emac";
+			reg = <0x04500000 0x10000>;
+			clocks = <&ccu CLK_BUS_EMAC0>;
+			clock-names = "stmmaceth";
+			resets = <&ccu RST_BUS_EMAC0>;
+			reset-names = "stmmaceth";
+			interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq";
+			pinctrl-names = "default";
+			pinctrl-0 = <&rgmii0_pins>;
+			syscon = <&syscon>;
+			status = "disabled";
+
+			mdio0: mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+		};
+
 		r_ccu: clock-controller@7010000 {
 			compatible = "allwinner,sun55i-a523-r-ccu";
 			reg = <0x7010000 0x250>;

-- 
2.49.0

[PATCH v3 4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board

[Yixun Lan]

On Radxa A5E board, the EMAC0 connect to external Maxio MAE0621A PHY,
which features a 25MHz crystal, and using PH8 pin as PHY reset.

Tested on A5E board with schematic V1.20.

Tested-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
 .../boot/dts/allwinner/sun55i-a527-radxa-a5e.dts      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
index 912e1bda974ce5f64c425e371357b1a78b7c13dd..4ba01ea6f0db793b08fb0645226126535d91c43b 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
@@ -12,6 +12,7 @@ / {
 	compatible = "radxa,cubie-a5e", "allwinner,sun55i-a527";
 
 	aliases {
+		ethernet0 = &emac0;
 		serial0 = &uart0;
 	};
 
@@ -54,6 +55,24 @@ &ehci1 {
 	status = "okay";
 };
 
+&emac0 {
+	phy-mode = "rgmii-id";
+	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_cldo3>;
+
+	allwinner,tx-delay-ps = <300>;
+	allwinner,rx-delay-ps = <400>;
+
+	status = "okay";
+};
+
+&mdio0 {
+	ext_rgmii_phy: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+	};
+};
+
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
 	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */

-- 
2.49.0

[PATCH v3 5/5] arm64: dts: allwinner: t527: add EMAC0 to Avaota-A1 board

[Yixun Lan]

On Avaota A1 board, the EMAC0 connect to an external RTL8211F-CG PHY,
which features a 25MHz crystal, and using PH8 pin as PHY reset.

Signed-off-by: Yixun Lan <dlan@gentoo.org>
---
I don't own this board, only compose this patch according to the
schematics. Let me know if it works.
---
 .../boot/dts/allwinner/sun55i-t527-avaota-a1.dts      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
index 85a546aecdbe149d6bad10327fca1fb7dafff6ad..4524a195e86d20089cc35610495424ed2dec7e95 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
@@ -12,6 +12,7 @@ / {
 	compatible = "yuzukihd,avaota-a1", "allwinner,sun55i-t527";
 
 	aliases {
+		ethernet0 = &emac0;
 		serial0 = &uart0;
 	};
 
@@ -64,6 +65,24 @@ &ehci1 {
 	status = "okay";
 };
 
+&emac0 {
+	phy-mode = "rgmii-id";
+	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_dcdc4>;
+
+	allwinner,tx-delay-ps = <100>;
+	allwinner,rx-delay-ps = <300>;
+
+	status = "okay";
+};
+
+&mdio0 {
+	ext_rgmii_phy: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+	};
+};
+
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
 	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */

-- 
2.49.0

Re: [PATCH v3 1/5] dt-bindings: sram: sunxi-sram: Add A523 compatible

[Krzysztof Kozlowski]

On Wed, Apr 30, 2025 at 01:32:03PM GMT, Yixun Lan wrote:
> The Allwinner A523 family of SoCs have their "system control" registers
> compatible to the A64 SoC, so add the new SoC specific compatible string.
> 
> Reviewed-by: Andre Przywara <andre.przywara@arm.com>
> Signed-off-by: Yixun Lan <dlan@gentoo.org>
> ---
>  .../devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml     | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH v3 0/5] allwinner: Add EMAC0 support to A523 variant SoC

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 30 Apr 2025 13:32:02 +0800 you wrote:
> This patch series is trying to add EMAC0 ethernet MAC support
> to the A523 variant SoCs, including A523, A527/T527 chips.
> 
> This MAC0 is compatible to previous A64 SoC, so introduce a new DT
> compatible but make it as a fallback to A64's compatible.
> 
> In this version, the PHYRSTB pin which routed to external phy
> has not been populated in DT. It's kind of optional for now,
> but we probably should handle it well later.
> 
> [...]

Here is the summary with links:
  - [v3,1/5] dt-bindings: sram: sunxi-sram: Add A523 compatible
    (no matching commit)
  - [v3,2/5] dt-bindings: net: sun8i-emac: Add A523 EMAC0 compatible
    https://git.kernel.org/netdev/net-next/c/0454b9057e98
  - [v3,3/5] arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC
    (no matching commit)
  - [v3,4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board
    (no matching commit)
  - [v3,5/5] arm64: dts: allwinner: t527: add EMAC0 to Avaota-A1 board
    (no matching commit)

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: (subset) [PATCH v3 0/5] allwinner: Add EMAC0 support to A523 variant SoC

[Chen-Yu Tsai]

On Wed, 30 Apr 2025 13:32:02 +0800, Yixun Lan wrote:
> This patch series is trying to add EMAC0 ethernet MAC support
> to the A523 variant SoCs, including A523, A527/T527 chips.
> 
> This MAC0 is compatible to previous A64 SoC, so introduce a new DT
> compatible but make it as a fallback to A64's compatible.
> 
> In this version, the PHYRSTB pin which routed to external phy
> has not been populated in DT. It's kind of optional for now,
> but we probably should handle it well later.
> 
> [...]

Applied to sunxi/dt-for-6.16 in sunxi/linux.git, thanks!

[1/5] dt-bindings: sram: sunxi-sram: Add A523 compatible
      https://git.kernel.org/sunxi/linux/c/02f27ea7fa02
[3/5] arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC
      https://git.kernel.org/sunxi/linux/c/56766ca6c4f6
[4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board
      https://git.kernel.org/sunxi/linux/c/acca163f3f51
[5/5] arm64: dts: allwinner: t527: add EMAC0 to Avaota-A1 board
      https://git.kernel.org/sunxi/linux/c/c6800f15998b

Best regards,
-- 
Chen-Yu Tsai <wens@csie.org>