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 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Spreadtrum SDHCI controller
8
9 maintainers:
10 - Orson Zhai <orsonzhai@gmail.com>
11 - Baolin Wang <baolin.wang7@gmail.com>
12 - Chunyan Zhang <zhang.lyra@gmail.com>
13
14 properties:
15 compatible:
16 const: sprd,sdhci-r11
17
18 reg:
19 maxItems: 1
20
21 interrupts:
22 maxItems: 1
23
24 clocks:
25 minItems: 2
26 items:
27 - description: SDIO source clock
28 - description: gate clock for enabling/disabling the device
29 - description: gate clock controlling the device for some special platforms (optional)
30
31 clock-names:
32 minItems: 2
33 items:
34 - const: sdio
35 - const: enable
36 - const: 2x_enable
37
38 pinctrl-0:
39 description: default/high speed pin control
40 maxItems: 1
41
42 pinctrl-1:
43 description: UHS mode pin control
44 maxItems: 1
45
46 pinctrl-names:
47 minItems: 1
48 items:
49 - const: default
50 - const: state_uhs
51
52 patternProperties:
53 "^sprd,phy-delay-(legacy|mmc-(ddr52|highspeed|hs[24]00|hs400es)|sd-(highspeed|uhs-sdr(50|104)))$":
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
65 required:
66 - compatible
67 - reg
68 - interrupts
69 - clocks
70 - clock-names
71
72 allOf:
73 - $ref: sdhci-common.yaml#
74
75 unevaluatedProperties: false
76
77 examples:
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 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.