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| -rw-r--r-- | Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 55 |
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diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt new file mode 100644 index 000000000000..81b33b5b20fc --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt | |||
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| 1 | * Qualcomm SDHCI controller (sdhci-msm) | ||
| 2 | |||
| 3 | This file documents differences between the core properties in mmc.txt | ||
| 4 | and the properties used by the sdhci-msm driver. | ||
| 5 | |||
| 6 | Required properties: | ||
| 7 | - compatible: Should contain "qcom,sdhci-msm-v4". | ||
| 8 | - reg: Base address and length of the register in the following order: | ||
| 9 | - Host controller register map (required) | ||
| 10 | - SD Core register map (required) | ||
| 11 | - interrupts: Should contain an interrupt-specifiers for the interrupts: | ||
| 12 | - Host controller interrupt (required) | ||
| 13 | - pinctrl-names: Should contain only one value - "default". | ||
| 14 | - pinctrl-0: Should specify pin control groups used for this controller. | ||
| 15 | - clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock-names. | ||
| 16 | - clock-names: Should contain the following: | ||
| 17 | "iface" - Main peripheral bus clock (PCLK/HCLK - AHB Bus clock) (required) | ||
| 18 | "core" - SDC MMC clock (MCLK) (required) | ||
| 19 | "bus" - SDCC bus voter clock (optional) | ||
| 20 | |||
| 21 | Example: | ||
| 22 | |||
| 23 | sdhc_1: sdhci@f9824900 { | ||
| 24 | compatible = "qcom,sdhci-msm-v4"; | ||
| 25 | reg = <0xf9824900 0x11c>, <0xf9824000 0x800>; | ||
| 26 | interrupts = <0 123 0>; | ||
| 27 | bus-width = <8>; | ||
| 28 | non-removable; | ||
| 29 | |||
| 30 | vmmc = <&pm8941_l20>; | ||
| 31 | vqmmc = <&pm8941_s3>; | ||
| 32 | |||
| 33 | pinctrl-names = "default"; | ||
| 34 | pinctrl-0 = <&sdc1_clk &sdc1_cmd &sdc1_data>; | ||
| 35 | |||
| 36 | clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>; | ||
| 37 | clock-names = "core", "iface"; | ||
| 38 | }; | ||
| 39 | |||
| 40 | sdhc_2: sdhci@f98a4900 { | ||
| 41 | compatible = "qcom,sdhci-msm-v4"; | ||
| 42 | reg = <0xf98a4900 0x11c>, <0xf98a4000 0x800>; | ||
| 43 | interrupts = <0 125 0>; | ||
| 44 | bus-width = <4>; | ||
| 45 | cd-gpios = <&msmgpio 62 0x1>; | ||
| 46 | |||
| 47 | vmmc = <&pm8941_l21>; | ||
| 48 | vqmmc = <&pm8941_l13>; | ||
| 49 | |||
| 50 | pinctrl-names = "default"; | ||
| 51 | pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data>; | ||
| 52 | |||
| 53 | clocks = <&gcc GCC_SDCC2_APPS_CLK>, <&gcc GCC_SDCC2_AHB_CLK>; | ||
| 54 | clock-names = "core", "iface"; | ||
| 55 | }; | ||
