1*4882a593Smuzhiyun* Cavium Octeon & ThunderX MMC controller 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThe highspeed MMC host controller on Caviums SoCs provides an interface 4*4882a593Smuzhiyunfor MMC and SD types of memory cards. 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunSupported maximum speeds are the ones of the eMMC standard 4.41 as well 7*4882a593Smuzhiyunas the speed of SD standard 4.0. Only 3.3 Volt is supported. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunRequired properties: 10*4882a593Smuzhiyun - compatible : should be one of: 11*4882a593Smuzhiyun cavium,octeon-6130-mmc 12*4882a593Smuzhiyun cavium,octeon-7890-mmc 13*4882a593Smuzhiyun cavium,thunder-8190-mmc 14*4882a593Smuzhiyun cavium,thunder-8390-mmc 15*4882a593Smuzhiyun mmc-slot 16*4882a593Smuzhiyun - reg : mmc controller base registers 17*4882a593Smuzhiyun - clocks : phandle 18*4882a593Smuzhiyun 19*4882a593SmuzhiyunOptional properties: 20*4882a593Smuzhiyun - for cd, bus-width and additional generic mmc parameters 21*4882a593Smuzhiyun please refer to mmc.txt within this directory 22*4882a593Smuzhiyun - cavium,cmd-clk-skew : number of coprocessor clocks before sampling command 23*4882a593Smuzhiyun - cavium,dat-clk-skew : number of coprocessor clocks before sampling data 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunDeprecated properties: 26*4882a593Smuzhiyun- spi-max-frequency : use max-frequency instead 27*4882a593Smuzhiyun- cavium,bus-max-width : use bus-width instead 28*4882a593Smuzhiyun- power-gpios : use vmmc-supply instead 29*4882a593Smuzhiyun- cavium,octeon-6130-mmc-slot : use mmc-slot instead 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunExamples: 32*4882a593Smuzhiyun mmc_1_4: mmc@1,4 { 33*4882a593Smuzhiyun compatible = "cavium,thunder-8390-mmc"; 34*4882a593Smuzhiyun reg = <0x0c00 0 0 0 0>; /* DEVFN = 0x0c (1:4) */ 35*4882a593Smuzhiyun #address-cells = <1>; 36*4882a593Smuzhiyun #size-cells = <0>; 37*4882a593Smuzhiyun clocks = <&sclk>; 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun mmc-slot@0 { 40*4882a593Smuzhiyun compatible = "mmc-slot"; 41*4882a593Smuzhiyun reg = <0>; 42*4882a593Smuzhiyun vmmc-supply = <&mmc_supply_3v3>; 43*4882a593Smuzhiyun max-frequency = <42000000>; 44*4882a593Smuzhiyun bus-width = <4>; 45*4882a593Smuzhiyun cap-sd-highspeed; 46*4882a593Smuzhiyun }; 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun mmc-slot@1 { 49*4882a593Smuzhiyun compatible = "mmc-slot"; 50*4882a593Smuzhiyun reg = <1>; 51*4882a593Smuzhiyun vmmc-supply = <&mmc_supply_3v3>; 52*4882a593Smuzhiyun max-frequency = <42000000>; 53*4882a593Smuzhiyun bus-width = <8>; 54*4882a593Smuzhiyun cap-mmc-highspeed; 55*4882a593Smuzhiyun non-removable; 56*4882a593Smuzhiyun }; 57*4882a593Smuzhiyun }; 58