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57 lines
1.5 KiB
57 lines
1.5 KiB
* Cavium Octeon & ThunderX MMC controller |
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The highspeed MMC host controller on Caviums SoCs provides an interface |
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for MMC and SD types of memory cards. |
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Supported maximum speeds are the ones of the eMMC standard 4.41 as well |
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as the speed of SD standard 4.0. Only 3.3 Volt is supported. |
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Required properties: |
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- compatible : should be one of: |
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cavium,octeon-6130-mmc |
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cavium,octeon-7890-mmc |
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cavium,thunder-8190-mmc |
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cavium,thunder-8390-mmc |
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mmc-slot |
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- reg : mmc controller base registers |
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- clocks : phandle |
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Optional properties: |
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- for cd, bus-width and additional generic mmc parameters |
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please refer to mmc.txt within this directory |
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- cavium,cmd-clk-skew : number of coprocessor clocks before sampling command |
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- cavium,dat-clk-skew : number of coprocessor clocks before sampling data |
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Deprecated properties: |
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- spi-max-frequency : use max-frequency instead |
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- cavium,bus-max-width : use bus-width instead |
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- power-gpios : use vmmc-supply instead |
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- cavium,octeon-6130-mmc-slot : use mmc-slot instead |
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Examples: |
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mmc_1_4: mmc@1,4 { |
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compatible = "cavium,thunder-8390-mmc"; |
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reg = <0x0c00 0 0 0 0>; /* DEVFN = 0x0c (1:4) */ |
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#address-cells = <1>; |
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#size-cells = <0>; |
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clocks = <&sclk>; |
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mmc-slot@0 { |
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compatible = "mmc-slot"; |
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reg = <0>; |
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vmmc-supply = <&mmc_supply_3v3>; |
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max-frequency = <42000000>; |
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bus-width = <4>; |
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cap-sd-highspeed; |
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}; |
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mmc-slot@1 { |
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compatible = "mmc-slot"; |
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reg = <1>; |
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vmmc-supply = <&mmc_supply_3v3>; |
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max-frequency = <42000000>; |
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bus-width = <8>; |
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cap-mmc-highspeed; |
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non-removable; |
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}; |
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};
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