[PATCH v2 0/2] ARM: dts: aspeed: Add ASRock Rack B650D4U support

[PATCH v2 0/2] ARM: dts: aspeed: Add ASRock Rack B650D4U support

[Prasanth Kumar Padarthi]

This series adds initial device tree support for the ASRock Rack
B650D4U BMC, which is based on the ASPEED AST2600 SoC.

The B650D4U is a server motherboard for AMD Ryzen processors. The initial
DTS describes the BMC console, FMC flash, dedicated management Ethernet,
FRU EEPROM, and watchdog.

The dedicated management port is described as MAC0 connected to an external
Clause 22 PHY on MDIO0 at address 0. The MAC uses RGMII with RX internal
delay, matching the vendor DTB description.

Tested:
- Built aspeed-bmc-asrock-b650d4u.dtb
- Ran dtbs_check for the board/aspeed binding
- QEMU boot smoke-tested with ast2600-evb

Changes in v2:
- Added MDIO0 PHY node for the dedicated management port.
- Set mac0 phy-mode to rgmii-rxid and added phy-handle.
- Removed unused GPIO include from the DTS.


Prasanth Kumar Padarthi (2):
  dt-bindings: arm: aspeed: Add ASRock Rack B650D4U
  ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

 .../bindings/arm/aspeed/aspeed.yaml           |  1 +
 arch/arm/boot/dts/aspeed/Makefile             |  1 +
 .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 71 +++++++++++++++++++
 3 files changed, 73 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

-- 
2.47.3

[PATCH v2 1/2] dt-bindings: arm: aspeed: Add ASRock Rack B650D4U

[Prasanth Kumar Padarthi]

Add the compatible string for the ASRock Rack B650D4U BMC,
which is an AST2600-based server motherboard.

Signed-off-by: Prasanth Kumar Padarthi <prasanth.padarthi10@gmail.com>
---
 Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml b/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
index 2f92b8ab0..656397850 100644
--- a/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
+++ b/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
@@ -77,6 +77,7 @@ properties:
               - ampere,mtmitchell-bmc
               - aspeed,ast2600-evb
               - aspeed,ast2600-evb-a1
+              - asrock,b650d4u-bmc
               - asus,x4tf-bmc
               - facebook,bletchley-bmc
               - facebook,catalina-bmc
-- 
2.47.3

[PATCH v2 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

[Prasanth Kumar Padarthi]

Add initial device tree support for the ASRock Rack B650D4U BMC.
The B650D4U is a server motherboard utilizing the ASPEED AST2600
SoC for management.

Signed-off-by: Prasanth Kumar Padarthi <prasanth.padarthi10@gmail.com>
---
 arch/arm/boot/dts/aspeed/Makefile             |  1 +
 .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 71 +++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index c4f064e4b..124d4f8f8 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -13,6 +13,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-asrock-romed8hm3.dtb \
 	aspeed-bmc-asrock-spc621d8hm3.dtb \
 	aspeed-bmc-asrock-x570d4u.dtb \
+	aspeed-bmc-asrock-b650d4u.dtb \
 	aspeed-bmc-asus-x4tf.dtb \
 	aspeed-bmc-bytedance-g220a.dtb \
 	aspeed-bmc-delta-ahe50dc.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
new file mode 100644
index 000000000..130b7f3e0
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "aspeed-g6.dtsi"
+
+/ {
+	model = "ASRock Rack B650D4U BMC";
+	compatible = "asrock,b650d4u-bmc", "aspeed,ast2600";
+
+	aliases {
+		serial4 = &uart5;
+	};
+
+	chosen {
+		stdout-path = "serial4:115200n8";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+};
+
+/* BMC Console UART */
+&uart5 {
+	status = "okay";
+};
+
+/* SPI Flash Management */
+&fmc {
+	status = "okay";
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+		label = "bmc";
+	};
+};
+
+/* Dedicated Management LAN */
+&mdio0 {
+	status = "okay";
+
+	ethphy0: ethernet-phy@0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+	};
+};
+
+&mac0 {
+	status = "okay";
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&ethphy0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+};
+
+/* I2C Bus for FRU/EEPROM Storage */
+&i2c7 {
+	status = "okay";
+	eeprom@57 {
+		compatible = "atmel,24c02";
+		reg = <0x57>;
+		pagesize = <16>;
+	};
+};
+
+/* System Watchdog */
+&wdt1 {
+	status = "okay";
+	aspeed,reset-type = "soc";
+};
-- 
2.47.3

Re: [PATCH v2 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

[Andrew Lunn]

> +&mac0 {
> +	status = "okay";
> +	phy-mode = "rgmii-rxid";

https://elixir.bootlin.com/linux/v6.15/source/Documentation/devicetree/bindings/net/ethernet-controller.yaml#L287

Please could you explain the choice of rgmii-rxid.

       Andrew

Re: [PATCH v2 1/2] dt-bindings: arm: aspeed: Add ASRock Rack B650D4U

[Conor Dooley]

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Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

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