1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Peripheral properties for Intel IXP4xx Expansion Bus
10 The IXP4xx expansion bus controller handles access to devices on the
11 memory-mapped expansion bus on the Intel IXP4xx family of system on chips,
12 including IXP42x, IXP43x, IXP45x and IXP46x.
15 - Linus Walleij <linus.walleij@linaro.org>
19 description: Address timing, extend address phase with n cycles.
20 $ref: /schemas/types.yaml#/definitions/uint32
24 description: Setup chip select timing, extend setup phase with n cycles.
25 $ref: /schemas/types.yaml#/definitions/uint32
29 description: Strobe timing, extend strobe phase with n cycles.
30 $ref: /schemas/types.yaml#/definitions/uint32
34 description: Hold timing, extend hold phase with n cycles.
35 $ref: /schemas/types.yaml#/definitions/uint32
39 description: Recovery timing, extend recovery phase with n cycles.
40 $ref: /schemas/types.yaml#/definitions/uint32
43 intel,ixp4xx-eb-cycle-type:
44 description: The type of cycles to use on the expansion bus for this
45 chip select. 0 = Intel cycles, 1 = Motorola cycles, 2 = HPI cycles.
46 $ref: /schemas/types.yaml#/definitions/uint32
49 intel,ixp4xx-eb-byte-access-on-halfword:
50 description: Allow byte read access on half word devices.
51 $ref: /schemas/types.yaml#/definitions/uint32
54 intel,ixp4xx-eb-hpi-hrdy-pol-high:
55 description: Set HPI HRDY polarity to active high when using HPI.
56 $ref: /schemas/types.yaml#/definitions/uint32
59 intel,ixp4xx-eb-mux-address-and-data:
60 description: Multiplex address and data on the data bus.
61 $ref: /schemas/types.yaml#/definitions/uint32
64 intel,ixp4xx-eb-ahb-split-transfers:
65 description: Enable AHB split transfers.
66 $ref: /schemas/types.yaml#/definitions/uint32
69 intel,ixp4xx-eb-write-enable:
70 description: Enable write cycles.
71 $ref: /schemas/types.yaml#/definitions/uint32
74 intel,ixp4xx-eb-byte-access:
75 description: Expansion bus uses only 8 bits. The default is to use
77 $ref: /schemas/types.yaml#/definitions/uint32
80 additionalProperties: true