cdns,sdhci.yaml (3778B)
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/mmc/cdns,sdhci.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Cadence SD/SDIO/eMMC Host Controller (SD4HC) 8 9maintainers: 10 - Masahiro Yamada <yamada.masahiro@socionext.com> 11 - Piotr Sroka <piotrs@cadence.com> 12 13allOf: 14 - $ref: mmc-controller.yaml 15 16properties: 17 compatible: 18 items: 19 - enum: 20 - microchip,mpfs-sd4hc 21 - socionext,uniphier-sd4hc 22 - const: cdns,sd4hc 23 24 reg: 25 maxItems: 1 26 27 interrupts: 28 maxItems: 1 29 30 clocks: 31 maxItems: 1 32 33 # PHY DLL input delays: 34 # They are used to delay the data valid window, and align the window to 35 # sampling clock. The delay starts from 5ns (for delay parameter equal to 0) 36 # and it is increased by 2.5ns in each step. 37 38 cdns,phy-input-delay-sd-highspeed: 39 description: Value of the delay in the input path for SD high-speed timing 40 $ref: "/schemas/types.yaml#/definitions/uint32" 41 minimum: 0 42 maximum: 0x1f 43 44 cdns,phy-input-delay-legacy: 45 description: Value of the delay in the input path for legacy timing 46 $ref: "/schemas/types.yaml#/definitions/uint32" 47 minimum: 0 48 maximum: 0x1f 49 50 cdns,phy-input-delay-sd-uhs-sdr12: 51 description: Value of the delay in the input path for SD UHS SDR12 timing 52 $ref: "/schemas/types.yaml#/definitions/uint32" 53 minimum: 0 54 maximum: 0x1f 55 56 cdns,phy-input-delay-sd-uhs-sdr25: 57 description: Value of the delay in the input path for SD UHS SDR25 timing 58 $ref: "/schemas/types.yaml#/definitions/uint32" 59 minimum: 0 60 maximum: 0x1f 61 62 cdns,phy-input-delay-sd-uhs-sdr50: 63 description: Value of the delay in the input path for SD UHS SDR50 timing 64 $ref: "/schemas/types.yaml#/definitions/uint32" 65 minimum: 0 66 maximum: 0x1f 67 68 cdns,phy-input-delay-sd-uhs-ddr50: 69 description: Value of the delay in the input path for SD UHS DDR50 timing 70 $ref: "/schemas/types.yaml#/definitions/uint32" 71 minimum: 0 72 maximum: 0x1f 73 74 cdns,phy-input-delay-mmc-highspeed: 75 description: Value of the delay in the input path for MMC high-speed timing 76 $ref: "/schemas/types.yaml#/definitions/uint32" 77 minimum: 0 78 maximum: 0x1f 79 80 cdns,phy-input-delay-mmc-ddr: 81 description: Value of the delay in the input path for eMMC high-speed DDR timing 82 83 # PHY DLL clock delays: 84 # Each delay property represents the fraction of the clock period. 85 # The approximate delay value will be 86 # (<delay property value>/128)*sdmclk_clock_period. 87 $ref: "/schemas/types.yaml#/definitions/uint32" 88 minimum: 0 89 maximum: 0x1f 90 91 cdns,phy-dll-delay-sdclk: 92 description: | 93 Value of the delay introduced on the sdclk output for all modes except 94 HS200, HS400 and HS400_ES. 95 $ref: "/schemas/types.yaml#/definitions/uint32" 96 minimum: 0 97 maximum: 0x7f 98 99 cdns,phy-dll-delay-sdclk-hsmmc: 100 description: | 101 Value of the delay introduced on the sdclk output for HS200, HS400 and 102 HS400_ES speed modes. 103 $ref: "/schemas/types.yaml#/definitions/uint32" 104 minimum: 0 105 maximum: 0x7f 106 107 cdns,phy-dll-delay-strobe: 108 description: | 109 Value of the delay introduced on the dat_strobe input used in 110 HS400 / HS400_ES speed modes. 111 $ref: "/schemas/types.yaml#/definitions/uint32" 112 minimum: 0 113 maximum: 0x7f 114 115required: 116 - compatible 117 - reg 118 - interrupts 119 - clocks 120 121unevaluatedProperties: false 122 123examples: 124 - | 125 emmc: mmc@5a000000 { 126 compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc"; 127 reg = <0x5a000000 0x400>; 128 interrupts = <0 78 4>; 129 clocks = <&clk 4>; 130 bus-width = <8>; 131 mmc-ddr-1_8v; 132 mmc-hs200-1_8v; 133 mmc-hs400-1_8v; 134 cdns,phy-dll-delay-sdclk = <0>; 135 };