Commit 7db3545a authored by Maxime Ripard's avatar Maxime Ripard Committed by Rob Herring
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dt-bindings: net: stmmac: Convert the binding to a schemas



Switch the STMMAC / Synopsys DesignWare MAC controller binding to a YAML
schema to enable the DT validation.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 7a47b908
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/snps,dwmac.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Synopsys DesignWare MAC Device Tree Bindings
maintainers:
- Alexandre Torgue <alexandre.torgue@st.com>
- Giuseppe Cavallaro <peppe.cavallaro@st.com>
- Jose Abreu <joabreu@synopsys.com>
# Select every compatible, including the deprecated ones. This way, we
# will be able to report a warning when we have that compatible, since
# we will validate the node thanks to the select, but won't report it
# as a valid value in the compatible property description
select:
properties:
compatible:
contains:
enum:
- snps,dwmac
- snps,dwmac-3.50a
- snps,dwmac-3.610
- snps,dwmac-3.70a
- snps,dwmac-3.710
- snps,dwmac-4.00
- snps,dwmac-4.10a
- snps,dwxgmac
- snps,dwxgmac-2.10
# Deprecated
- st,spear600-gmac
required:
- compatible
properties:
# We need to include all the compatibles from schemas that will
# include that schemas, otherwise compatible won't validate for
# those.
compatible:
contains:
enum:
- snps,dwmac
- snps,dwmac-3.50a
- snps,dwmac-3.610
- snps,dwmac-3.70a
- snps,dwmac-3.710
- snps,dwmac-4.00
- snps,dwmac-4.10a
- snps,dwxgmac
- snps,dwxgmac-2.10
reg:
maxItems: 1
interrupts:
minItems: 1
maxItems: 3
items:
- description: Combined signal for various interrupt events
- description: The interrupt to manage the remote wake-up packet detection
- description: The interrupt that occurs when Rx exits the LPI state
interrupt-names:
minItems: 1
maxItems: 3
items:
- const: macirq
- const: eth_wake_irq
- const: eth_lpi
clocks:
minItems: 1
maxItems: 3
items:
- description: GMAC main clock
- description: Peripheral registers interface clock
- description:
PTP reference clock. This clock is used for programming the
Timestamp Addend Register. If not passed then the system
clock will be used and this is fine on some platforms.
clock-names:
additionalItems: true
contains:
enum:
- stmmaceth
- pclk
- ptp_ref
resets:
maxItems: 1
description:
MAC Reset signal.
reset-names:
const: stmmaceth
snps,axi-config:
$ref: /schemas/types.yaml#definitions/phandle
description:
AXI BUS Mode parameters. Phandle to a node that can contain the
following properties
* snps,lpi_en, enable Low Power Interface
* snps,xit_frm, unlock on WoL
* snps,wr_osr_lmt, max write outstanding req. limit
* snps,rd_osr_lmt, max read outstanding req. limit
* snps,kbbe, do not cross 1KiB boundary.
* snps,blen, this is a vector of supported burst length.
* snps,fb, fixed-burst
* snps,mb, mixed-burst
* snps,rb, rebuild INCRx Burst
snps,mtl-rx-config:
$ref: /schemas/types.yaml#definitions/phandle
description:
Multiple RX Queues parameters. Phandle to a node that can
contain the following properties
* snps,rx-queues-to-use, number of RX queues to be used in the
driver
* Choose one of these RX scheduling algorithms
* snps,rx-sched-sp, Strict priority
* snps,rx-sched-wsp, Weighted Strict priority
* For each RX queue
* Choose one of these modes
* snps,dcb-algorithm, Queue to be enabled as DCB
* snps,avb-algorithm, Queue to be enabled as AVB
* snps,map-to-dma-channel, Channel to map
* Specifiy specific packet routing
* snps,route-avcp, AV Untagged Control packets
* snps,route-ptp, PTP Packets
* snps,route-dcbcp, DCB Control Packets
* snps,route-up, Untagged Packets
* snps,route-multi-broad, Multicast & Broadcast Packets
* snps,priority, RX queue priority (Range 0x0 to 0xF)
snps,mtl-tx-config:
$ref: /schemas/types.yaml#definitions/phandle
description:
Multiple TX Queues parameters. Phandle to a node that can
contain the following properties
* snps,tx-queues-to-use, number of TX queues to be used in the
driver
* Choose one of these TX scheduling algorithms
* snps,tx-sched-wrr, Weighted Round Robin
* snps,tx-sched-wfq, Weighted Fair Queuing
* snps,tx-sched-dwrr, Deficit Weighted Round Robin
* snps,tx-sched-sp, Strict priority
* For each TX queue
* snps,weight, TX queue weight (if using a DCB weight
algorithm)
* Choose one of these modes
* snps,dcb-algorithm, TX queue will be working in DCB
* snps,avb-algorithm, TX queue will be working in AVB
[Attention] Queue 0 is reserved for legacy traffic
and so no AVB is available in this queue.
* Configure Credit Base Shaper (if AVB Mode selected)
* snps,send_slope, enable Low Power Interface
* snps,idle_slope, unlock on WoL
* snps,high_credit, max write outstanding req. limit
* snps,low_credit, max read outstanding req. limit
* snps,priority, TX queue priority (Range 0x0 to 0xF)
snps,reset-gpio:
maxItems: 1
description:
PHY Reset GPIO
snps,reset-active-low:
$ref: /schemas/types.yaml#definitions/flag
description:
Indicates that the PHY Reset is active low
snps,reset-delays-us:
allOf:
- $ref: /schemas/types.yaml#definitions/uint32-array
- minItems: 3
maxItems: 3
description:
Triplet of delays. The 1st cell is reset pre-delay in micro
seconds. The 2nd cell is reset pulse in micro seconds. The 3rd
cell is reset post-delay in micro seconds.
snps,aal:
$ref: /schemas/types.yaml#definitions/flag
description:
Use Address-Aligned Beats
snps,fixed-burst:
$ref: /schemas/types.yaml#definitions/flag
description:
Program the DMA to use the fixed burst mode
snps,mixed-burst:
$ref: /schemas/types.yaml#definitions/flag
description:
Program the DMA to use the mixed burst mode
snps,force_thresh_dma_mode:
$ref: /schemas/types.yaml#definitions/flag
description:
Force DMA to use the threshold mode for both tx and rx
snps,force_sf_dma_mode:
$ref: /schemas/types.yaml#definitions/flag
description:
Force DMA to use the Store and Forward mode for both tx and
rx. This flag is ignored if force_thresh_dma_mode is set.
snps,en-tx-lpi-clockgating:
$ref: /schemas/types.yaml#definitions/flag
description:
Enable gating of the MAC TX clock during TX low-power mode
snps,multicast-filter-bins:
$ref: /schemas/types.yaml#definitions/uint32
description:
Number of multicast filter hash bins supported by this device
instance
snps,perfect-filter-entries:
$ref: /schemas/types.yaml#definitions/uint32
description:
Number of perfect filter entries supported by this device
instance
snps,ps-speed:
$ref: /schemas/types.yaml#definitions/uint32
description:
Port selection speed that can be passed to the core when PCS
is supported. For example, this is used in case of SGMII and
MAC2MAC connection.
mdio:
type: object
description:
Creates and registers an MDIO bus.
properties:
compatible:
const: snps,dwmac-mdio
required:
- compatible
required:
- compatible
- reg
- interrupts
- interrupt-names
- phy-connection-type
dependencies:
snps,reset-active-low: ["snps,reset-gpio"]
snps,reset-delay-us: ["snps,reset-gpio"]
allOf:
- $ref: "ethernet-controller.yaml#"
- if:
properties:
compatible:
contains:
enum:
- snps,dwxgmac
- snps,dwxgmac-2.10
- st,spear600-gmac
then:
properties:
snps,pbl:
allOf:
- $ref: /schemas/types.yaml#definitions/uint32
- enum: [2, 4, 8]
description:
Programmable Burst Length (tx and rx)
snps,txpbl:
allOf:
- $ref: /schemas/types.yaml#definitions/uint32
- enum: [2, 4, 8]
description:
Tx Programmable Burst Length. If set, DMA tx will use this
value rather than snps,pbl.
snps,rxpbl:
allOf:
- $ref: /schemas/types.yaml#definitions/uint32
- enum: [2, 4, 8]
description:
Rx Programmable Burst Length. If set, DMA rx will use this
value rather than snps,pbl.
snps,no-pbl-x8:
$ref: /schemas/types.yaml#definitions/flag
description:
Don\'t multiply the pbl/txpbl/rxpbl values by 8. For core
rev < 3.50, don\'t multiply the values by 4.
- if:
properties:
compatible:
contains:
enum:
- snps,dwmac-4.00
- snps,dwmac-4.10a
- snps,dwxgmac
- snps,dwxgmac-2.10
- st,spear600-gmac
then:
snps,tso:
$ref: /schemas/types.yaml#definitions/flag
description:
Enables the TSO feature otherwise it will be managed by
MAC HW capability register.
examples:
- |
stmmac_axi_setup: stmmac-axi-config {
snps,wr_osr_lmt = <0xf>;
snps,rd_osr_lmt = <0xf>;
snps,blen = <256 128 64 32 0 0 0>;
};
mtl_rx_setup: rx-queues-config {
snps,rx-queues-to-use = <1>;
snps,rx-sched-sp;
queue0 {
snps,dcb-algorithm;
snps,map-to-dma-channel = <0x0>;
snps,priority = <0x0>;
};
};
mtl_tx_setup: tx-queues-config {
snps,tx-queues-to-use = <2>;
snps,tx-sched-wrr;
queue0 {
snps,weight = <0x10>;
snps,dcb-algorithm;
snps,priority = <0x0>;
};
queue1 {
snps,avb-algorithm;
snps,send_slope = <0x1000>;
snps,idle_slope = <0x1000>;
snps,high_credit = <0x3E800>;
snps,low_credit = <0xFFC18000>;
snps,priority = <0x1>;
};
};
gmac0: ethernet@e0800000 {
compatible = "snps,dwxgmac-2.10", "snps,dwxgmac";
reg = <0xe0800000 0x8000>;
interrupt-parent = <&vic1>;
interrupts = <24 23 22>;
interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
mac-address = [000000000000]; /* Filled in by U-Boot */
max-frame-size = <3800>;
phy-connection-type = "gmii";
snps,multicast-filter-bins = <256>;
snps,perfect-filter-entries = <128>;
rx-fifo-depth = <16384>;
tx-fifo-depth = <16384>;
clocks = <&clock>;
clock-names = "stmmaceth";
snps,axi-config = <&stmmac_axi_setup>;
snps,mtl-rx-config = <&mtl_rx_setup>;
snps,mtl-tx-config = <&mtl_tx_setup>;
mdio0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
phy1: ethernet-phy@0 {
reg = <0>;
};
};
};
# FIXME: We should set it, but it would report all the generic
# properties as additional properties.
# additionalProperties: false
...
* STMicroelectronics 10/100/1000/2500/10000 Ethernet (GMAC/XGMAC)
Required properties:
- compatible: Should be "snps,dwmac-<ip_version>", "snps,dwmac" or
"snps,dwxgmac-<ip_version>", "snps,dwxgmac".
For backwards compatibility: "st,spear600-gmac" is also supported.
- reg: Address and length of the register set for the device
- interrupts: Should contain the STMMAC interrupts
- interrupt-names: Should contain a list of interrupt names corresponding to
the interrupts in the interrupts property, if available.
Valid interrupt names are:
- "macirq" (combined signal for various interrupt events)
- "eth_wake_irq" (the interrupt to manage the remote wake-up packet detection)
- "eth_lpi" (the interrupt that occurs when Rx exits the LPI state)
- phy-mode: See ethernet.txt file in the same directory.
- snps,reset-gpio gpio number for phy reset.
- snps,reset-active-low boolean flag to indicate if phy reset is active low.
- snps,reset-delays-us is triplet of delays
The 1st cell is reset pre-delay in micro seconds.
The 2nd cell is reset pulse in micro seconds.
The 3rd cell is reset post-delay in micro seconds.
Optional properties:
- resets: Should contain a phandle to the STMMAC reset signal, if any
- reset-names: Should contain the reset signal name "stmmaceth", if a
reset phandle is given
- max-frame-size: See ethernet.txt file in the same directory
- clocks: If present, the first clock should be the GMAC main clock and
the second clock should be peripheral's register interface clock. Further
clocks may be specified in derived bindings.
- clock-names: One name for each entry in the clocks property, the
first one should be "stmmaceth" and the second one should be "pclk".
- ptp_ref: this is the PTP reference clock; in case of the PTP is available
this clock is used for programming the Timestamp Addend Register. If not
passed then the system clock will be used and this is fine on some
platforms.
- tx-fifo-depth: See ethernet.txt file in the same directory
- rx-fifo-depth: See ethernet.txt file in the same directory
- snps,pbl Programmable Burst Length (tx and rx)
- snps,txpbl Tx Programmable Burst Length. Only for GMAC and newer.
If set, DMA tx will use this value rather than snps,pbl.
- snps,rxpbl Rx Programmable Burst Length. Only for GMAC and newer.
If set, DMA rx will use this value rather than snps,pbl.
- snps,no-pbl-x8 Don't multiply the pbl/txpbl/rxpbl values by 8.
For core rev < 3.50, don't multiply the values by 4.
- snps,aal Address-Aligned Beats
- snps,fixed-burst Program the DMA to use the fixed burst mode
- snps,mixed-burst Program the DMA to use the mixed burst mode
- snps,force_thresh_dma_mode Force DMA to use the threshold mode for
both tx and rx
- snps,force_sf_dma_mode Force DMA to use the Store and Forward
mode for both tx and rx. This flag is
ignored if force_thresh_dma_mode is set.
- snps,en-tx-lpi-clockgating Enable gating of the MAC TX clock during
TX low-power mode
- snps,multicast-filter-bins: Number of multicast filter hash bins
supported by this device instance
- snps,perfect-filter-entries: Number of perfect filter entries supported
by this device instance
- snps,ps-speed: port selection speed that can be passed to the core when
PCS is supported. For example, this is used in case of SGMII
and MAC2MAC connection.
- snps,tso: this enables the TSO feature otherwise it will be managed by
MAC HW capability register. Only for GMAC4 and newer.
- AXI BUS Mode parameters: below the list of all the parameters to program the
AXI register inside the DMA module:
- snps,lpi_en: enable Low Power Interface
- snps,xit_frm: unlock on WoL
- snps,wr_osr_lmt: max write outstanding req. limit
- snps,rd_osr_lmt: max read outstanding req. limit
- snps,kbbe: do not cross 1KiB boundary.
- snps,blen: this is a vector of supported burst length.
- snps,fb: fixed-burst
- snps,mb: mixed-burst
- snps,rb: rebuild INCRx Burst
- mdio: with compatible = "snps,dwmac-mdio", create and register mdio bus.
- Multiple RX Queues parameters: below the list of all the parameters to
configure the multiple RX queues:
- snps,rx-queues-to-use: number of RX queues to be used in the driver
- Choose one of these RX scheduling algorithms:
- snps,rx-sched-sp: Strict priority
- snps,rx-sched-wsp: Weighted Strict priority
- For each RX queue
- Choose one of these modes:
- snps,dcb-algorithm: Queue to be enabled as DCB
- snps,avb-algorithm: Queue to be enabled as AVB
- snps,map-to-dma-channel: Channel to map
- Specifiy specific packet routing:
- snps,route-avcp: AV Untagged Control packets
- snps,route-ptp: PTP Packets
- snps,route-dcbcp: DCB Control Packets
- snps,route-up: Untagged Packets
- snps,route-multi-broad: Multicast & Broadcast Packets
- snps,priority: RX queue priority (Range: 0x0 to 0xF)
- Multiple TX Queues parameters: below the list of all the parameters to
configure the multiple TX queues:
- snps,tx-queues-to-use: number of TX queues to be used in the driver
- Choose one of these TX scheduling algorithms:
- snps,tx-sched-wrr: Weighted Round Robin
- snps,tx-sched-wfq: Weighted Fair Queuing
- snps,tx-sched-dwrr: Deficit Weighted Round Robin
- snps,tx-sched-sp: Strict priority
- For each TX queue
- snps,weight: TX queue weight (if using a DCB weight algorithm)
- Choose one of these modes:
- snps,dcb-algorithm: TX queue will be working in DCB
- snps,avb-algorithm: TX queue will be working in AVB
[Attention] Queue 0 is reserved for legacy traffic
and so no AVB is available in this queue.
- Configure Credit Base Shaper (if AVB Mode selected):
- snps,send_slope: enable Low Power Interface
- snps,idle_slope: unlock on WoL
- snps,high_credit: max write outstanding req. limit
- snps,low_credit: max read outstanding req. limit
- snps,priority: TX queue priority (Range: 0x0 to 0xF)
Examples:
stmmac_axi_setup: stmmac-axi-config {
snps,wr_osr_lmt = <0xf>;
snps,rd_osr_lmt = <0xf>;
snps,blen = <256 128 64 32 0 0 0>;
};
mtl_rx_setup: rx-queues-config {
snps,rx-queues-to-use = <1>;
snps,rx-sched-sp;
queue0 {
snps,dcb-algorithm;
snps,map-to-dma-channel = <0x0>;
snps,priority = <0x0>;
};
};
mtl_tx_setup: tx-queues-config {
snps,tx-queues-to-use = <2>;
snps,tx-sched-wrr;
queue0 {
snps,weight = <0x10>;
snps,dcb-algorithm;
snps,priority = <0x0>;
};
queue1 {
snps,avb-algorithm;
snps,send_slope = <0x1000>;
snps,idle_slope = <0x1000>;
snps,high_credit = <0x3E800>;
snps,low_credit = <0xFFC18000>;
snps,priority = <0x1>;
};
};
gmac0: ethernet@e0800000 {
compatible = "st,spear600-gmac";
reg = <0xe0800000 0x8000>;
interrupt-parent = <&vic1>;
interrupts = <24 23 22>;
interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
mac-address = [000000000000]; /* Filled in by U-Boot */
max-frame-size = <3800>;
phy-mode = "gmii";
snps,multicast-filter-bins = <256>;
snps,perfect-filter-entries = <128>;
rx-fifo-depth = <16384>;
tx-fifo-depth = <16384>;
clocks = <&clock>;
clock-names = "stmmaceth";
snps,axi-config = <&stmmac_axi_setup>;
mdio0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
phy1: ethernet-phy@0 {
};
};
snps,mtl-rx-config = <&mtl_rx_setup>;
snps,mtl-tx-config = <&mtl_tx_setup>;
};
This file has moved to snps,dwmac.yaml.
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