1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/snps,dwmac.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Synopsys DesignWare MAC Device Tree Bindings
8
9maintainers:
10  - Alexandre Torgue <alexandre.torgue@st.com>
11  - Giuseppe Cavallaro <peppe.cavallaro@st.com>
12  - Jose Abreu <joabreu@synopsys.com>
13
14# Select every compatible, including the deprecated ones. This way, we
15# will be able to report a warning when we have that compatible, since
16# we will validate the node thanks to the select, but won't report it
17# as a valid value in the compatible property description
18select:
19  properties:
20    compatible:
21      contains:
22        enum:
23          - snps,dwmac
24          - snps,dwmac-3.50a
25          - snps,dwmac-3.610
26          - snps,dwmac-3.70a
27          - snps,dwmac-3.710
28          - snps,dwmac-4.00
29          - snps,dwmac-4.10a
30          - snps,dwmac-4.20a
31          - snps,dwxgmac
32          - snps,dwxgmac-2.10
33
34          # Deprecated
35          - st,spear600-gmac
36
37  required:
38    - compatible
39
40properties:
41
42  # We need to include all the compatibles from schemas that will
43  # include that schemas, otherwise compatible won't validate for
44  # those.
45  compatible:
46    contains:
47      enum:
48        - allwinner,sun7i-a20-gmac
49        - allwinner,sun8i-a83t-emac
50        - allwinner,sun8i-h3-emac
51        - allwinner,sun8i-r40-emac
52        - allwinner,sun8i-v3s-emac
53        - allwinner,sun50i-a64-emac
54        - loongson,ls2k-dwmac
55        - loongson,ls7a-dwmac
56        - amlogic,meson6-dwmac
57        - amlogic,meson8b-dwmac
58        - amlogic,meson8m2-dwmac
59        - amlogic,meson-gxbb-dwmac
60        - amlogic,meson-axg-dwmac
61        - loongson,ls2k-dwmac
62        - loongson,ls7a-dwmac
63        - ingenic,jz4775-mac
64        - ingenic,x1000-mac
65        - ingenic,x1600-mac
66        - ingenic,x1830-mac
67        - ingenic,x2000-mac
68        - rockchip,px30-gmac
69        - rockchip,rk3128-gmac
70        - rockchip,rk3228-gmac
71        - rockchip,rk3288-gmac
72        - rockchip,rk3328-gmac
73        - rockchip,rk3366-gmac
74        - rockchip,rk3368-gmac
75        - rockchip,rk3399-gmac
76        - rockchip,rv1108-gmac
77        - snps,dwmac
78        - snps,dwmac-3.50a
79        - snps,dwmac-3.610
80        - snps,dwmac-3.70a
81        - snps,dwmac-3.710
82        - snps,dwmac-4.00
83        - snps,dwmac-4.10a
84        - snps,dwmac-4.20a
85        - snps,dwxgmac
86        - snps,dwxgmac-2.10
87
88  reg:
89    minItems: 1
90    maxItems: 2
91
92  interrupts:
93    minItems: 1
94    maxItems: 3
95    items:
96      - description: Combined signal for various interrupt events
97      - description: The interrupt to manage the remote wake-up packet detection
98      - description: The interrupt that occurs when Rx exits the LPI state
99
100  interrupt-names:
101    minItems: 1
102    maxItems: 3
103    items:
104      - const: macirq
105      - const: eth_wake_irq
106      - const: eth_lpi
107
108  clocks:
109    minItems: 1
110    maxItems: 8
111    additionalItems: true
112    items:
113      - description: GMAC main clock
114      - description: Peripheral registers interface clock
115      - description:
116          PTP reference clock. This clock is used for programming the
117          Timestamp Addend Register. If not passed then the system
118          clock will be used and this is fine on some platforms.
119
120  clock-names:
121    minItems: 1
122    maxItems: 8
123    additionalItems: true
124    contains:
125      enum:
126        - stmmaceth
127        - pclk
128        - ptp_ref
129
130  resets:
131    maxItems: 1
132    description:
133      MAC Reset signal.
134
135  reset-names:
136    const: stmmaceth
137
138  mac-mode:
139    $ref: ethernet-controller.yaml#/properties/phy-connection-type
140    description:
141      The property is identical to 'phy-mode', and assumes that there is mode
142      converter in-between the MAC & PHY (e.g. GMII-to-RGMII). This converter
143      can be passive (no SW requirement), and requires that the MAC operate
144      in a different mode than the PHY in order to function.
145
146  snps,axi-config:
147    $ref: /schemas/types.yaml#/definitions/phandle
148    description:
149      AXI BUS Mode parameters. Phandle to a node that can contain the
150      following properties
151        * snps,lpi_en, enable Low Power Interface
152        * snps,xit_frm, unlock on WoL
153        * snps,wr_osr_lmt, max write outstanding req. limit
154        * snps,rd_osr_lmt, max read outstanding req. limit
155        * snps,kbbe, do not cross 1KiB boundary.
156        * snps,blen, this is a vector of supported burst length.
157        * snps,fb, fixed-burst
158        * snps,mb, mixed-burst
159        * snps,rb, rebuild INCRx Burst
160
161  snps,mtl-rx-config:
162    $ref: /schemas/types.yaml#/definitions/phandle
163    description:
164      Multiple RX Queues parameters. Phandle to a node that can
165      contain the following properties
166        * snps,rx-queues-to-use, number of RX queues to be used in the
167          driver
168        * Choose one of these RX scheduling algorithms
169          * snps,rx-sched-sp, Strict priority
170          * snps,rx-sched-wsp, Weighted Strict priority
171        * For each RX queue
172          * Choose one of these modes
173            * snps,dcb-algorithm, Queue to be enabled as DCB
174            * snps,avb-algorithm, Queue to be enabled as AVB
175          * snps,map-to-dma-channel, Channel to map
176          * Specifiy specific packet routing
177            * snps,route-avcp, AV Untagged Control packets
178            * snps,route-ptp, PTP Packets
179            * snps,route-dcbcp, DCB Control Packets
180            * snps,route-up, Untagged Packets
181            * snps,route-multi-broad, Multicast & Broadcast Packets
182          * snps,priority, bitmask of the tagged frames priorities assigned to
183            the queue
184
185  snps,mtl-tx-config:
186    $ref: /schemas/types.yaml#/definitions/phandle
187    description:
188      Multiple TX Queues parameters. Phandle to a node that can
189      contain the following properties
190        * snps,tx-queues-to-use, number of TX queues to be used in the
191          driver
192        * Choose one of these TX scheduling algorithms
193          * snps,tx-sched-wrr, Weighted Round Robin
194          * snps,tx-sched-wfq, Weighted Fair Queuing
195          * snps,tx-sched-dwrr, Deficit Weighted Round Robin
196          * snps,tx-sched-sp, Strict priority
197        * For each TX queue
198          * snps,weight, TX queue weight (if using a DCB weight
199            algorithm)
200          * Choose one of these modes
201            * snps,dcb-algorithm, TX queue will be working in DCB
202            * snps,avb-algorithm, TX queue will be working in AVB
203              [Attention] Queue 0 is reserved for legacy traffic
204                          and so no AVB is available in this queue.
205          * Configure Credit Base Shaper (if AVB Mode selected)
206            * snps,send_slope, enable Low Power Interface
207            * snps,idle_slope, unlock on WoL
208            * snps,high_credit, max write outstanding req. limit
209            * snps,low_credit, max read outstanding req. limit
210          * snps,priority, bitmask of the priorities assigned to the queue.
211            When a PFC frame is received with priorities matching the bitmask,
212            the queue is blocked from transmitting for the pause time specified
213            in the PFC frame.
214
215  snps,reset-gpio:
216    deprecated: true
217    maxItems: 1
218    description:
219      PHY Reset GPIO
220
221  snps,reset-active-low:
222    deprecated: true
223    $ref: /schemas/types.yaml#/definitions/flag
224    description:
225      Indicates that the PHY Reset is active low
226
227  snps,reset-delays-us:
228    deprecated: true
229    description:
230      Triplet of delays. The 1st cell is reset pre-delay in micro
231      seconds. The 2nd cell is reset pulse in micro seconds. The 3rd
232      cell is reset post-delay in micro seconds.
233    minItems: 3
234    maxItems: 3
235
236  snps,aal:
237    $ref: /schemas/types.yaml#/definitions/flag
238    description:
239      Use Address-Aligned Beats
240
241  snps,fixed-burst:
242    $ref: /schemas/types.yaml#/definitions/flag
243    description:
244      Program the DMA to use the fixed burst mode
245
246  snps,mixed-burst:
247    $ref: /schemas/types.yaml#/definitions/flag
248    description:
249      Program the DMA to use the mixed burst mode
250
251  snps,force_thresh_dma_mode:
252    $ref: /schemas/types.yaml#/definitions/flag
253    description:
254      Force DMA to use the threshold mode for both tx and rx
255
256  snps,force_sf_dma_mode:
257    $ref: /schemas/types.yaml#/definitions/flag
258    description:
259      Force DMA to use the Store and Forward mode for both tx and
260      rx. This flag is ignored if force_thresh_dma_mode is set.
261
262  snps,en-tx-lpi-clockgating:
263    $ref: /schemas/types.yaml#/definitions/flag
264    description:
265      Enable gating of the MAC TX clock during TX low-power mode
266
267  snps,multicast-filter-bins:
268    $ref: /schemas/types.yaml#/definitions/uint32
269    description:
270      Number of multicast filter hash bins supported by this device
271      instance
272
273  snps,perfect-filter-entries:
274    $ref: /schemas/types.yaml#/definitions/uint32
275    description:
276      Number of perfect filter entries supported by this device
277      instance
278
279  snps,ps-speed:
280    $ref: /schemas/types.yaml#/definitions/uint32
281    description:
282      Port selection speed that can be passed to the core when PCS
283      is supported. For example, this is used in case of SGMII and
284      MAC2MAC connection.
285
286  mdio:
287    type: object
288    description:
289      Creates and registers an MDIO bus.
290
291    properties:
292      compatible:
293        const: snps,dwmac-mdio
294
295    required:
296      - compatible
297
298required:
299  - compatible
300  - reg
301  - interrupts
302  - interrupt-names
303  - phy-mode
304
305dependencies:
306  snps,reset-active-low: ["snps,reset-gpio"]
307  snps,reset-delay-us: ["snps,reset-gpio"]
308
309allOf:
310  - $ref: "ethernet-controller.yaml#"
311  - if:
312      properties:
313        compatible:
314          contains:
315            enum:
316              - allwinner,sun7i-a20-gmac
317              - allwinner,sun8i-a83t-emac
318              - allwinner,sun8i-h3-emac
319              - allwinner,sun8i-r40-emac
320              - allwinner,sun8i-v3s-emac
321              - allwinner,sun50i-a64-emac
322              - ingenic,jz4775-mac
323              - ingenic,x1000-mac
324              - ingenic,x1600-mac
325              - ingenic,x1830-mac
326              - ingenic,x2000-mac
327              - snps,dwxgmac
328              - snps,dwxgmac-2.10
329              - st,spear600-gmac
330
331    then:
332      properties:
333        snps,pbl:
334          description:
335            Programmable Burst Length (tx and rx)
336          $ref: /schemas/types.yaml#/definitions/uint32
337          enum: [2, 4, 8]
338
339        snps,txpbl:
340          description:
341            Tx Programmable Burst Length. If set, DMA tx will use this
342            value rather than snps,pbl.
343          $ref: /schemas/types.yaml#/definitions/uint32
344          enum: [2, 4, 8]
345
346        snps,rxpbl:
347          description:
348            Rx Programmable Burst Length. If set, DMA rx will use this
349            value rather than snps,pbl.
350          $ref: /schemas/types.yaml#/definitions/uint32
351          enum: [2, 4, 8]
352
353        snps,no-pbl-x8:
354          $ref: /schemas/types.yaml#/definitions/flag
355          description:
356            Don\'t multiply the pbl/txpbl/rxpbl values by 8. For core
357            rev < 3.50, don\'t multiply the values by 4.
358
359  - if:
360      properties:
361        compatible:
362          contains:
363            enum:
364              - allwinner,sun7i-a20-gmac
365              - allwinner,sun8i-a83t-emac
366              - allwinner,sun8i-h3-emac
367              - allwinner,sun8i-r40-emac
368              - allwinner,sun8i-v3s-emac
369              - allwinner,sun50i-a64-emac
370              - loongson,ls2k-dwmac
371              - loongson,ls7a-dwmac
372              - ingenic,jz4775-mac
373              - ingenic,x1000-mac
374              - ingenic,x1600-mac
375              - ingenic,x1830-mac
376              - ingenic,x2000-mac
377              - snps,dwmac-4.00
378              - snps,dwmac-4.10a
379              - snps,dwmac-4.20a
380              - snps,dwxgmac
381              - snps,dwxgmac-2.10
382              - st,spear600-gmac
383
384    then:
385      properties:
386        snps,tso:
387          $ref: /schemas/types.yaml#/definitions/flag
388          description:
389            Enables the TSO feature otherwise it will be managed by
390            MAC HW capability register.
391
392additionalProperties: true
393
394examples:
395  - |
396    stmmac_axi_setup: stmmac-axi-config {
397        snps,wr_osr_lmt = <0xf>;
398        snps,rd_osr_lmt = <0xf>;
399        snps,blen = <256 128 64 32 0 0 0>;
400    };
401
402    mtl_rx_setup: rx-queues-config {
403        snps,rx-queues-to-use = <1>;
404        snps,rx-sched-sp;
405        queue0 {
406            snps,dcb-algorithm;
407            snps,map-to-dma-channel = <0x0>;
408            snps,priority = <0x0>;
409        };
410    };
411
412    mtl_tx_setup: tx-queues-config {
413        snps,tx-queues-to-use = <2>;
414        snps,tx-sched-wrr;
415        queue0 {
416            snps,weight = <0x10>;
417            snps,dcb-algorithm;
418            snps,priority = <0x0>;
419        };
420
421        queue1 {
422            snps,avb-algorithm;
423            snps,send_slope = <0x1000>;
424            snps,idle_slope = <0x1000>;
425            snps,high_credit = <0x3E800>;
426            snps,low_credit = <0xFFC18000>;
427            snps,priority = <0x1>;
428        };
429    };
430
431    gmac0: ethernet@e0800000 {
432        compatible = "snps,dwxgmac-2.10", "snps,dwxgmac";
433        reg = <0xe0800000 0x8000>;
434        interrupt-parent = <&vic1>;
435        interrupts = <24 23 22>;
436        interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
437        mac-address = [000000000000]; /* Filled in by U-Boot */
438        max-frame-size = <3800>;
439        phy-mode = "gmii";
440        snps,multicast-filter-bins = <256>;
441        snps,perfect-filter-entries = <128>;
442        rx-fifo-depth = <16384>;
443        tx-fifo-depth = <16384>;
444        clocks = <&clock>;
445        clock-names = "stmmaceth";
446        snps,axi-config = <&stmmac_axi_setup>;
447        snps,mtl-rx-config = <&mtl_rx_setup>;
448        snps,mtl-tx-config = <&mtl_tx_setup>;
449        mdio0 {
450            #address-cells = <1>;
451            #size-cells = <0>;
452            compatible = "snps,dwmac-mdio";
453            phy1: ethernet-phy@0 {
454                reg = <0>;
455            };
456        };
457    };
458
459# FIXME: We should set it, but it would report all the generic
460# properties as additional properties.
461# additionalProperties: false
462
463...
464