xref: /linux/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml (revision 9f2c9170934eace462499ba0bfe042cc72900173) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/qcom,spi-geni-qcom.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: GENI based Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
8
9maintainers:
10  - Andy Gross <agross@kernel.org>
11  - Bjorn Andersson <bjorn.andersson@linaro.org>
12  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
13
14description:
15  The QUP v3 core is a GENI based AHB slave that provides a common data path
16  (an output FIFO and an input FIFO) for serial peripheral interface (SPI)
17  mini-core.
18
19  SPI in master mode supports up to 50MHz, up to four chip selects,
20  programmable data path from 4 bits to 32 bits and numerous protocol variants.
21
22  SPI Controller nodes must be child of GENI based Qualcomm Universal
23  Peripharal. Please refer GENI based QUP wrapper controller node bindings
24  described in Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml.
25
26allOf:
27  - $ref: /schemas/spi/spi-controller.yaml#
28
29properties:
30  compatible:
31    const: qcom,geni-spi
32
33  clocks:
34    maxItems: 1
35
36  clock-names:
37    const: se
38
39  dmas:
40    maxItems: 2
41
42  dma-names:
43    items:
44      - const: tx
45      - const: rx
46
47  interconnects:
48    minItems: 2
49    maxItems: 3
50
51  interconnect-names:
52    minItems: 2
53    items:
54      - const: qup-core
55      - const: qup-config
56      - const: qup-memory
57
58  interrupts:
59    maxItems: 1
60
61  operating-points-v2: true
62
63  power-domains:
64    maxItems: 1
65
66  reg:
67    maxItems: 1
68
69required:
70  - compatible
71  - clocks
72  - clock-names
73  - interrupts
74  - reg
75
76unevaluatedProperties: false
77
78examples:
79  - |
80    #include <dt-bindings/clock/qcom,gcc-sc7180.h>
81    #include <dt-bindings/interconnect/qcom,sc7180.h>
82    #include <dt-bindings/interrupt-controller/arm-gic.h>
83    #include <dt-bindings/power/qcom-rpmpd.h>
84
85    spi@880000 {
86        compatible = "qcom,geni-spi";
87        reg = <0x00880000 0x4000>;
88        clock-names = "se";
89        clocks = <&gcc GCC_QUPV3_WRAP0_S0_CLK>;
90        pinctrl-names = "default";
91        pinctrl-0 = <&qup_spi0_default>;
92        interrupts = <GIC_SPI 601 IRQ_TYPE_LEVEL_HIGH>;
93        #address-cells = <1>;
94        #size-cells = <0>;
95        power-domains = <&rpmhpd SC7180_CX>;
96        operating-points-v2 = <&qup_opp_table>;
97        interconnects = <&qup_virt MASTER_QUP_CORE_0 0 &qup_virt SLAVE_QUP_CORE_0 0>,
98                        <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>;
99        interconnect-names = "qup-core", "qup-config";
100    };
101
102  - |
103    #include <dt-bindings/dma/qcom-gpi.h>
104
105    spi@884000 {
106        compatible = "qcom,geni-spi";
107        reg = <0x00884000 0x4000>;
108        clock-names = "se";
109        clocks = <&gcc GCC_QUPV3_WRAP0_S1_CLK>;
110        dmas = <&gpi_dma0 0 1 QCOM_GPI_SPI>,
111               <&gpi_dma0 1 1 QCOM_GPI_SPI>;
112        dma-names = "tx", "rx";
113        pinctrl-names = "default";
114        pinctrl-0 = <&qup_spi1_default>;
115        interrupts = <GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>;
116        #address-cells = <1>;
117        #size-cells = <0>;
118    };
119