xref: /linux/Documentation/devicetree/bindings/mmc/sprd,sdhci-r11.yaml (revision 4436e6da008fee87d54c038e983e5be9a6baf8fb) 
1# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mmc/sprd,sdhci-r11.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Spreadtrum SDHCI controller
8
9maintainers:
10  - Orson Zhai <orsonzhai@gmail.com>
11  - Baolin Wang <baolin.wang7@gmail.com>
12  - Chunyan Zhang <zhang.lyra@gmail.com>
13
14properties:
15  compatible:
16    const: sprd,sdhci-r11
17
18  reg:
19    maxItems: 1
20
21  interrupts:
22    maxItems: 1
23
24  clocks:
25    minItems: 2
26    items:
27      - description: SDIO source clock
28      - description: gate clock for enabling/disabling the device
29      - description: gate clock controlling the device for some special platforms (optional)
30
31  clock-names:
32    minItems: 2
33    items:
34      - const: sdio
35      - const: enable
36      - const: 2x_enable
37
38  pinctrl-0:
39    description: default/high speed pin control
40    maxItems: 1
41
42  pinctrl-1:
43    description: UHS mode pin control
44    maxItems: 1
45
46  pinctrl-names:
47    minItems: 1
48    items:
49      - const: default
50      - const: state_uhs
51
52patternProperties:
53  "^sprd,phy-delay-(legacy|mmc-(ddr52|highspeed|hs[24]00|hs400es)|sd-(highspeed|uhs-sdr(50|104)))$":
54    $ref: /schemas/types.yaml#/definitions/uint32-array
55    items:
56      - description: clock data write line delay value
57      - description: clock read command line delay value
58      - description: clock read data positive edge delay value
59      - description: clock read data negative edge delay value
60    description:
61      PHY DLL delays are used to delay the data valid window, and align
62      the window to the sampling clock. Each cell's delay value unit is
63      cycle of the PHY clock.
64
65required:
66  - compatible
67  - reg
68  - interrupts
69  - clocks
70  - clock-names
71
72allOf:
73  - $ref: sdhci-common.yaml#
74
75unevaluatedProperties: false
76
77examples:
78  - |
79    #include <dt-bindings/clock/sprd,sc9860-clk.h>
80    #include <dt-bindings/interrupt-controller/arm-gic.h>
81    #include <dt-bindings/interrupt-controller/irq.h>
82
83    mmc@50430000 {
84      compatible = "sprd,sdhci-r11";
85      reg = <0x50430000 0x1000>;
86      interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
87
88      clocks = <&aon_prediv CLK_EMMC_2X>,
89               <&apahb_gate CLK_EMMC_EB>,
90               <&aon_gate CLK_EMMC_2X_EN>;
91      clock-names = "sdio", "enable", "2x_enable";
92
93      pinctrl-0 = <&sd0_pins_default>;
94      pinctrl-1 = <&sd0_pins_uhs>;
95      pinctrl-names = "default", "state_uhs";
96
97      bus-width = <8>;
98      cap-mmc-hw-reset;
99      mmc-hs400-enhanced-strobe;
100      mmc-hs400-1_8v;
101      mmc-hs200-1_8v;
102      mmc-ddr-1_8v;
103      non-removable;
104      no-sdio;
105      no-sd;
106
107      sprd,phy-delay-mmc-ddr52 = <0x3f 0x75 0x14 0x14>;
108      sprd,phy-delay-mmc-hs200 = <0x0 0x8c 0x8c 0x8c>;
109      sprd,phy-delay-mmc-hs400 = <0x44 0x7f 0x2e 0x2e>;
110      sprd,phy-delay-mmc-hs400es = <0x3f 0x3f 0x2e 0x2e>;
111    };
112...
113