bindings/spi/sprd%2Cspi-adi.yaml

1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/sprd,spi-adi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10   - Orson Zhai <orsonzhai@gmail.com>
11   - Baolin Wang <baolin.wang7@gmail.com>
12   - Chunyan Zhang <zhang.lyra@gmail.com>
15   ADI is the abbreviation of Anolog-Digital interface, which is used to access
24   which means we can just link one analog chip address to one hardware channel,
25   then users can access the mapped analog chip address by this hardware channel
28   Thus we introduce one property named "sprd,hw-channels" to configure hardware
29   channels, the first value specifies the hardware channel id which is used to
33   Since we have multi-subsystems will use unique ADI to access analog chip, when
38   Then we need one hardware spinlock to synchronize between the multiple subsystems.
40   The new version ADI controller supplies multiple master channels for different
46   - $ref: /schemas/spi/spi-controller.yaml#
51       - sprd,sc9860-adi
52       - sprd,sc9863-adi
53       - sprd,ums512-adi
61   hwlock-names:
64   sprd,hw-channels:
65     $ref: /schemas/types.yaml#/definitions/uint32-matrix
71         - description: The hardware channel id which is used to transfer data
72             triggered by hardware automatically, channel id 0-1 are for software
73             use, 2-49 are hardware channels.
76         - description: The analog chip address where user want to access by
80   - compatible
81   - reg
82   - '#address-cells'
83   - '#size-cells'
88   - |
90         #address-cells = <2>;
91         #size-cells = <2>;
94             compatible = "sprd,sc9860-adi";
97             hwlock-names = "adi";
98             #address-cells = <1>;
99             #size-cells = <0>;
100             sprd,hw-channels = <30 0x8c20>;