Lines Matching +full:hardware +full:- +full:triggered

1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: "http://devicetree.org/schemas/spi/sprd,spi-adi.yaml#"
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
11   - Orson Zhai <orsonzhai@gmail.com>
12   - Baolin Wang <baolin.wang7@gmail.com>
13   - Chunyan Zhang <zhang.lyra@gmail.com>
16   ADI is the abbreviation of Anolog-Digital interface, which is used to access
18   framework for its hardware implementation is alike to SPI bus and its timing
22   48 hardware channels to access analog chip. For 2 software read/write channels,
23   users should set ADI registers to access analog chip. For hardware channels,
24   we can configure them to allow other hardware components to use it independently,
25   which means we can just link one analog chip address to one hardware channel,
26   then users can access the mapped analog chip address by this hardware channel
27   triggered by hardware components instead of ADI software channels.
29   Thus we introduce one property named "sprd,hw-channels" to configure hardware
30   channels, the first value specifies the hardware channel id which is used to
31   transfer data triggered by hardware automatically, and the second value specifies
32   the analog chip address where user want to access by hardware components.
34   Since we have multi-subsystems will use unique ADI to access analog chip, when
36   one hardware spinlock protection to prevent other systems from reading/writing
39   Then we need one hardware spinlock to synchronize between the multiple subsystems.
42   subsystem accessing, that means no need to add hardware spinlock to synchronize,
43   thus change the hardware spinlock support to be optional to keep backward
47   - $ref: /schemas/spi/spi-controller.yaml#
52       - sprd,sc9860-adi
53       - sprd,sc9863-adi
54       - sprd,ums512-adi
62   hwlock-names:
65   sprd,hw-channels:
66     $ref: /schemas/types.yaml#/definitions/uint32-matrix
67     description: A list of hardware channels
72         - description: The hardware channel id which is used to transfer data
73             triggered by hardware automatically, channel id 0-1 are for software
74             use, 2-49 are hardware channels.
77         - description: The analog chip address where user want to access by
78             hardware components.
81   - compatible
82   - reg
83   - '#address-cells'
84   - '#size-cells'
89   - |
91         #address-cells = <2>;
92         #size-cells = <2>;
95             compatible = "sprd,sc9860-adi";
98             hwlock-names = "adi";
99             #address-cells = <1>;
100             #size-cells = <0>;
101             sprd,hw-channels = <30 0x8c20>;