tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mtd/cdns,hp-nfc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Cadence NAND controller
8
9maintainers:
10 - Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
11
12allOf:
13 - $ref: nand-controller.yaml
14
15properties:
16 compatible:
17 items:
18 - const: cdns,hp-nfc
19
20 reg:
21 items:
22 - description: Controller register set
23 - description: Slave DMA data port register set
24
25 reg-names:
26 items:
27 - const: reg
28 - const: sdma
29
30 interrupts:
31 maxItems: 1
32
33 clocks:
34 maxItems: 1
35
36 clock-names:
37 items:
38 - const: nf_clk
39
40 dmas:
41 maxItems: 1
42
43 iommus:
44 maxItems: 1
45
46 cdns,board-delay-ps:
47 description: |
48 Estimated Board delay. The value includes the total round trip
49 delay for the signals and is used for deciding on values associated
50 with data read capture. The example formula for SDR mode is the
51 following.
52 board delay = RE#PAD delay + PCB trace to device + PCB trace from device
53 + DQ PAD delay
54
55required:
56 - compatible
57 - reg
58 - reg-names
59 - interrupts
60 - clocks
61 - clock-names
62
63unevaluatedProperties: false
64
65examples:
66 - |
67 #include <dt-bindings/interrupt-controller/arm-gic.h>
68
69 nand-controller@10b80000 {
70 compatible = "cdns,hp-nfc";
71 reg = <0x10b80000 0x10000>,
72 <0x10840000 0x10000>;
73 reg-names = "reg", "sdma";
74 #address-cells = <1>;
75 #size-cells = <0>;
76 interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
77 clocks = <&clk>;
78 clock-names = "nf_clk";
79 cdns,board-delay-ps = <4830>;
80
81 nand@0 {
82 reg = <0>;
83 };
84 };