11590SrgrimesBindings for HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs 21590Srgrimes 31590SrgrimesRequired properties: 41590Srgrimes- compatible : "ti,am654-hbmc" for AM654 SoC 51590Srgrimes- reg : Two entries: 61590Srgrimes First entry pointed to the register space of HBMC controller 71590Srgrimes Second entry pointing to the memory map region dedicated for 81590Srgrimes MMIO access to attached flash devices 91590Srgrimes- ranges : Address translation from offset within CS to allocated MMIO 101590Srgrimes space in SoC 111590Srgrimes 121590SrgrimesOptional properties: 131590Srgrimes- mux-controls : phandle to the multiplexer that controls selection of 141590Srgrimes HBMC vs OSPI inside Flash SubSystem (FSS). Default is OSPI, 151590Srgrimes if property is absent. 161590Srgrimes See Documentation/devicetree/bindings/mux/reg-mux.txt 171590Srgrimes for mmio-mux binding details 181590Srgrimes 191590SrgrimesExample: 201590Srgrimes 211590Srgrimes system-controller@47000000 { 221590Srgrimes compatible = "syscon", "simple-mfd"; 231590Srgrimes reg = <0x0 0x47000000 0x0 0x100>; 241590Srgrimes #address-cells = <2>; 251590Srgrimes #size-cells = <2>; 261590Srgrimes ranges; 271590Srgrimes 281590Srgrimes hbmc_mux: multiplexer { 291590Srgrimes compatible = "mmio-mux"; 3060583Sphk #mux-control-cells = <1>; 3160583Sphk mux-reg-masks = <0x4 0x2>; /* 0: reg 0x4, bit 1 */ 3260583Sphk }; 331590Srgrimes }; 341590Srgrimes 351590Srgrimes hbmc: hyperbus@47034000 { 361590Srgrimes compatible = "ti,am654-hbmc"; 371590Srgrimes reg = <0x0 0x47034000 0x0 0x100>, 381590Srgrimes <0x5 0x00000000 0x1 0x0000000>; 39149388Sbrian power-domains = <&k3_pds 55>; 4092920Simp #address-cells = <2>; 4192920Simp #size-cells = <1>; 4292920Simp ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */ 4392920Simp <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */ 441590Srgrimes mux-controls = <&hbmc_mux 0>; 45227156Sed 46 /* Slave flash node */ 47 flash@0,0 { 48 compatible = "cypress,hyperflash", "cfi-flash"; 49 reg = <0x0 0x0 0x4000000>; 50 }; 51 }; 52