xref: /linux/Documentation/devicetree/bindings/spi/samsung,spi.yaml (revision dec1c62e91ba268ab2a6e339d4d7a59287d5eba1) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/samsung,spi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Samsung S3C/S5P/Exynos SoC SPI controller
8
9maintainers:
10  - Krzysztof Kozlowski <krzk@kernel.org>
11
12description:
13  All the SPI controller nodes should be represented in the aliases node using
14  the following format 'spi{n}' where n is a unique number for the alias.
15
16properties:
17  compatible:
18    oneOf:
19      - enum:
20          - samsung,s3c2443-spi # for S3C2443, S3C2416 and S3C2450
21          - samsung,s3c6410-spi
22          - samsung,s5pv210-spi # for S5PV210 and S5PC110
23          - samsung,exynos5433-spi
24          - tesla,fsd-spi
25      - const: samsung,exynos7-spi
26        deprecated: true
27
28  clocks:
29    minItems: 2
30    maxItems: 3
31
32  clock-names:
33    minItems: 2
34    maxItems: 3
35
36  cs-gpios: true
37
38  dmas:
39    minItems: 2
40    maxItems: 2
41
42  dma-names:
43    items:
44      - const: tx
45      - const: rx
46
47  interrupts:
48    maxItems: 1
49
50  no-cs-readback:
51    description:
52      The CS line is disconnected, therefore the device should not operate
53      based on CS signalling.
54    type: boolean
55
56  num-cs:
57    minimum: 1
58    maximum: 4
59    default: 1
60
61  samsung,spi-src-clk:
62    description:
63      If the spi controller includes a internal clock mux to select the clock
64      source for the spi bus clock, this property can be used to indicate the
65      clock to be used for driving the spi bus clock. If not specified, the
66      clock number 0 is used as default.
67    $ref: /schemas/types.yaml#/definitions/uint32
68    default: 0
69
70  reg:
71    maxItems: 1
72
73required:
74  - compatible
75  - clocks
76  - clock-names
77  - dmas
78  - dma-names
79  - interrupts
80  - reg
81
82allOf:
83  - $ref: spi-controller.yaml#
84  - if:
85      properties:
86        compatible:
87          contains:
88            const: samsung,exynos5433-spi
89    then:
90      properties:
91        clocks:
92          minItems: 3
93          maxItems: 3
94        clock-names:
95          items:
96            - const: spi
97            - enum:
98                - spi_busclk0
99                - spi_busclk1
100                - spi_busclk2
101                - spi_busclk3
102            - const: spi_ioclk
103    else:
104      properties:
105        clocks:
106          minItems: 2
107          maxItems: 2
108        clock-names:
109          items:
110            - const: spi
111            - enum:
112                - spi_busclk0
113                - spi_busclk1
114                - spi_busclk2
115                - spi_busclk3
116
117unevaluatedProperties: false
118
119examples:
120  - |
121    #include <dt-bindings/clock/exynos5433.h>
122    #include <dt-bindings/clock/samsung,s2mps11.h>
123    #include <dt-bindings/interrupt-controller/arm-gic.h>
124    #include <dt-bindings/gpio/gpio.h>
125
126    spi@14d30000 {
127        compatible = "samsung,exynos5433-spi";
128        reg = <0x14d30000 0x100>;
129        interrupts = <GIC_SPI 433 IRQ_TYPE_LEVEL_HIGH>;
130        dmas = <&pdma0 11>, <&pdma0 10>;
131        dma-names = "tx", "rx";
132        #address-cells = <1>;
133        #size-cells = <0>;
134        clocks = <&cmu_peric CLK_PCLK_SPI1>,
135                 <&cmu_peric CLK_SCLK_SPI1>,
136                 <&cmu_peric CLK_SCLK_IOCLK_SPI1>;
137        clock-names = "spi",
138                      "spi_busclk0",
139                      "spi_ioclk";
140        samsung,spi-src-clk = <0>;
141        pinctrl-names = "default";
142        pinctrl-0 = <&spi1_bus>;
143        num-cs = <1>;
144
145        cs-gpios = <&gpd6 3 GPIO_ACTIVE_HIGH>;
146
147        audio-codec@0 {
148            compatible = "wlf,wm5110";
149            reg = <0x0>;
150            spi-max-frequency = <20000000>;
151            interrupt-parent = <&gpa0>;
152            interrupts = <4 IRQ_TYPE_NONE>;
153            clocks = <&pmu_system_controller 0>,
154                     <&s2mps13_osc S2MPS11_CLK_BT>;
155            clock-names = "mclk1", "mclk2";
156
157            gpio-controller;
158            #gpio-cells = <2>;
159            interrupt-controller;
160            #interrupt-cells = <2>;
161
162            wlf,micd-detect-debounce = <300>;
163            wlf,micd-bias-start-time = <0x1>;
164            wlf,micd-rate = <0x7>;
165            wlf,micd-dbtime = <0x2>;
166            wlf,micd-force-micbias;
167            wlf,micd-configs = <0x0 1 0>;
168            wlf,hpdet-channel = <1>;
169            wlf,gpsw = <0x1>;
170            wlf,inmode = <2 0 2 0>;
171
172            wlf,reset = <&gpc0 7 GPIO_ACTIVE_HIGH>;
173            wlf,ldoena = <&gpf0 0 GPIO_ACTIVE_HIGH>;
174
175            /* core supplies */
176            AVDD-supply = <&ldo18_reg>;
177            DBVDD1-supply = <&ldo18_reg>;
178            CPVDD-supply = <&ldo18_reg>;
179            DBVDD2-supply = <&ldo18_reg>;
180            DBVDD3-supply = <&ldo18_reg>;
181            SPKVDDL-supply = <&ldo18_reg>;
182            SPKVDDR-supply = <&ldo18_reg>;
183
184            controller-data {
185                samsung,spi-feedback-delay = <0>;
186            };
187        };
188    };
189