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