Re: [PATCH net-next V5] dt-bindings: net: xlnx,axi-ethernet: convert bindings document to yaml

From: Rob Herring
Date: Wed Feb 15 2023 - 16:09:21 EST

On Tue, Feb 14, 2023 at 04:52:59PM +0530, Sarath Babu Naidu Gaddam wrote:
> From: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
>
> Convert the bindings document for Xilinx AXI Ethernet Subsystem
> from txt to yaml. No changes to existing binding description.
>
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
> Signed-off-by: Sarath Babu Naidu Gaddam <sarath.babu.naidu.gaddam@xxxxxxx>
> ---
> Chanages in V5:
> 1) Removed .txt file which was missed in V4
>
> Changes in V4:
> 1)Changed the interrupts property and add allOf:if:then for it.
>
> Changes in V3:
> 1) Moved RFC to PATCH.
> 2) Addressed below review comments
> a) Indentation.
> b) maxItems:3 does not match your description.
> c) Filename matching compatibles.
>
> Changes in V2:
> 1) remove .txt and change the name of file to xlnx,axiethernet.yaml.
> 2) Fix DT check warning('device_type' does not match any of the regexes:
> 'pinctrl-[0-9]+' From schema: Documentation/devicetree/bindings/net
> /xilinx_axienet.yaml).
> ---
> .../bindings/net/xilinx_axienet.txt | 101 -----------
> .../bindings/net/xlnx,axi-ethernet.yaml | 166 ++++++++++++++++++
> MAINTAINERS | 1 +
> 3 files changed, 167 insertions(+), 101 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/net/xilinx_axienet.txt
> create mode 100644 Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml


> diff --git a/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
> new file mode 100644
> index 000000000000..d2d276d4858f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
> @@ -0,0 +1,166 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/xlnx,axi-ethernet.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: AXI 1G/2.5G Ethernet Subsystem
> +
> +description: |
> + Also called AXI 1G/2.5G Ethernet Subsystem, the xilinx axi ethernet IP core
> + provides connectivity to an external ethernet PHY supporting different
> + interfaces: MII, GMII, RGMII, SGMII, 1000BaseX. It also includes two
> + segments of memory for buffering TX and RX, as well as the capability of
> + offloading TX/RX checksum calculation off the processor.
> +
> + Management configuration is done through the AXI interface, while payload is
> + sent and received through means of an AXI DMA controller. This driver
> + includes the DMA driver code, so this driver is incompatible with AXI DMA
> + driver.
> +
> +maintainers:
> + - Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
> +
> +properties:
> + compatible:
> + enum:
> + - xlnx,axi-ethernet-1.00.a
> + - xlnx,axi-ethernet-1.01.a
> + - xlnx,axi-ethernet-2.01.a
> +
> + reg:
> + description:
> + Address and length of the IO space, as well as the address
> + and length of the AXI DMA controller IO space, unless
> + axistream-connected is specified, in which case the reg
> + attribute of the node referenced by it is used.
> + maxItems: 2
> +
> + interrupts:
> + items:
> + - description: Ethernet core interrupt
> + - description: Tx DMA interrupt
> + - description: Rx DMA interrupt
> + description:
> + Ethernet core interrupt is optional. If axistream-connected property is
> + present DMA node should contains TX/RX DMA interrupts else DMA interrupt
> + resources are mentioned on ethernet node.
> + minItems: 1
> +
> + phy-handle: true
> +
> + xlnx,rxmem:
> + description:
> + Set to allocated memory buffer for Rx/Tx in the hardware.
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + phy-mode: true
> +
> + xlnx,phy-type:
> + description:
> + Do not use, but still accepted in preference to phy-mode.
> + deprecated: true
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + xlnx,txcsum:
> + description:
> + TX checksum offload. 0 or empty for disabling TX checksum offload,
> + 1 to enable partial TX checksum offload and 2 to enable full TX
> + checksum offload.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 1, 2]
> +
> + xlnx,rxcsum:
> + description:
> + RX checksum offload. 0 or empty for disabling RX checksum offload,
> + 1 to enable partial RX checksum offload and 2 to enable full RX
> + checksum offload.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 1, 2]
> +
> + xlnx,switch-x-sgmii:
> + type: boolean
> + description:
> + Indicate the Ethernet core is configured to support both 1000BaseX and
> + SGMII modes. If set, the phy-mode should be set to match the mode
> + selected on core reset (i.e. by the basex_or_sgmii core input line).
> +
> + clocks:
> + items:
> + - description: Clock for AXI register slave interface.
> + - description: AXI4-Stream clock for TXD RXD TXC and RXS interfaces.
> + - description: Ethernet reference clock, used by signal delay primitives
> + and transceivers.
> + - description: MGT reference clock (used by optional internal PCS/PMA PHY)
> +
> + clock-names:
> + items:
> + - const: s_axi_lite_clk
> + - const: axis_clk
> + - const: ref_clk
> + - const: mgt_clk
> +
> + axistream-connected:
> + type: object
> + description: Reference to another node which contains the resources
> + for the AXI DMA controller used by this device. If this is specified,
> + the DMA-related resources from that device (DMA registers and DMA
> + TX/RX interrupts) rather than this one will be used.
> +
> + mdio: true
> +
> + pcs-handle:
> + description: Phandle to the internal PCS/PMA PHY in SGMII or 1000Base-X
> + modes, where "pcs-handle" should be used to point to the PCS/PMA PHY,
> + and "phy-handle" should point to an external PHY if exists.
> + $ref: /schemas/types.yaml#/definitions/phandle

Drop this and add a $ref to ethernet-controller.yaml

> +
> +required:
> + - compatible
> + - interrupts
> + - reg
> + - xlnx,rxmem
> + - phy-handle
> +
> +allOf:
> + - if:
> + required:
> + - axistream-connected
> +
> + then:
> + properties:
> + interrupts:
> + minItems: 2
> + maxItems: 3
> +
> + else:
> + properties:
> + interrupts:
> + maxItems: 1
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + axi_ethernet_eth: ethernet@40c00000 {
> + compatible = "xlnx,axi-ethernet-1.00.a";
> + interrupt-parent = <&microblaze_0_axi_intc>;

Not relevant to the binding.

> + interrupts = <2 0 1>;
> + clock-names = "s_axi_lite_clk", "axis_clk", "ref_clk", "mgt_clk";
> + clocks = <&axi_clk>, <&axi_clk>, <&pl_enet_ref_clk>, <&mgt_clk>;
> + phy-mode = "mii";
> + reg = <0x40c00000 0x40000>,<0x50c00000 0x40000>;
> + xlnx,rxcsum = <0x2>;
> + xlnx,rxmem = <0x800>;
> + xlnx,txcsum = <0x2>;
> + phy-handle = <&phy0>;
> +
> + axi_ethernetlite_0_mdio: mdio {

Drop unused labels.

> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy0: ethernet-phy@1 {
> + device_type = "ethernet-phy";
> + reg = <1>;
> + };
> + };
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 2cf9eb43ed8f..0bf527552dc9 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22895,6 +22895,7 @@ F: drivers/iio/adc/xilinx-ams.c
> XILINX AXI ETHERNET DRIVER
> M: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
> S: Maintained
> +F: Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
> F: drivers/net/ethernet/xilinx/xilinx_axienet*
>
> XILINX CAN DRIVER
> --
> 2.25.1
>