1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# %YAML 1.2 3--- 4$id: http://devicetree.org/schemas/memory-controllers/rockchip,rk3399-dmc.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip rk3399 DMC (Dynamic Memory Controller) device 8 9maintainers: 10 - Brian Norris <briannorris@chromium.org> 11 12properties: 13 compatible: 14 enum: 15 - rockchip,rk3399-dmc 16 17 devfreq-events: 18 $ref: /schemas/types.yaml#/definitions/phandle 19 description: 20 Node to get DDR loading. Refer to 21 Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt. 22 23 clocks: 24 maxItems: 1 25 26 clock-names: 27 items: 28 - const: dmc_clk 29 30 operating-points-v2: true 31 32 center-supply: 33 description: 34 DMC regulator supply. 35 36 rockchip,pmu: 37 $ref: /schemas/types.yaml#/definitions/phandle 38 description: 39 Phandle to the syscon managing the "PMU general register files". 40 41 interrupts: 42 maxItems: 1 43 description: 44 The CPU interrupt number. It should be a DCF interrupt. When DDR DVFS 45 finishes, a DCF interrupt is triggered. 46 47 rockchip,ddr3_speed_bin: 48 deprecated: true 49 $ref: /schemas/types.yaml#/definitions/uint32 50 description: 51 For values, reference include/dt-bindings/clock/rk3399-ddr.h. Selects the 52 DDR3 cl-trp-trcd type. It must be set according to "Speed Bin" in DDR3 53 datasheet; DO NOT use a smaller "Speed Bin" than specified for the DDR3 54 being used. 55 56 rockchip,pd_idle: 57 deprecated: true 58 $ref: /schemas/types.yaml#/definitions/uint32 59 description: 60 Configure the PD_IDLE value. Defines the power-down idle period in which 61 memories are placed into power-down mode if bus is idle for PD_IDLE DFI 62 clock cycles. 63 See also rockchip,pd-idle-ns. 64 65 rockchip,sr_idle: 66 deprecated: true 67 $ref: /schemas/types.yaml#/definitions/uint32 68 description: 69 Configure the SR_IDLE value. Defines the self-refresh idle period in 70 which memories are placed into self-refresh mode if bus is idle for 71 SR_IDLE * 1024 DFI clock cycles (DFI clocks freq is half of DRAM clock). 72 See also rockchip,sr-idle-ns. 73 default: 0 74 75 rockchip,sr_mc_gate_idle: 76 deprecated: true 77 $ref: /schemas/types.yaml#/definitions/uint32 78 description: 79 Defines the memory self-refresh and controller clock gating idle period. 80 Memories are placed into self-refresh mode and memory controller clock 81 arg gating started if bus is idle for sr_mc_gate_idle*1024 DFI clock 82 cycles. 83 See also rockchip,sr-mc-gate-idle-ns. 84 85 rockchip,srpd_lite_idle: 86 deprecated: true 87 $ref: /schemas/types.yaml#/definitions/uint32 88 description: 89 Defines the self-refresh power down idle period in which memories are 90 placed into self-refresh power down mode if bus is idle for 91 srpd_lite_idle * 1024 DFI clock cycles. This parameter is for LPDDR4 92 only. 93 See also rockchip,srpd-lite-idle-ns. 94 95 rockchip,standby_idle: 96 deprecated: true 97 $ref: /schemas/types.yaml#/definitions/uint32 98 description: 99 Defines the standby idle period in which memories are placed into 100 self-refresh mode. The controller, pi, PHY and DRAM clock will be gated 101 if bus is idle for standby_idle * DFI clock cycles. 102 See also rockchip,standby-idle-ns. 103 104 rockchip,dram_dll_dis_freq: 105 deprecated: true 106 $ref: /schemas/types.yaml#/definitions/uint32 107 description: | 108 Defines the DDR3 DLL bypass frequency in MHz. When DDR frequency is less 109 than DRAM_DLL_DISB_FREQ, DDR3 DLL will be bypassed. 110 Note: if DLL was bypassed, the odt will also stop working. 111 112 rockchip,phy_dll_dis_freq: 113 deprecated: true 114 $ref: /schemas/types.yaml#/definitions/uint32 115 description: | 116 Defines the PHY dll bypass frequency in MHz (Mega Hz). When DDR frequency 117 is less than DRAM_DLL_DISB_FREQ, PHY DLL will be bypassed. 118 Note: PHY DLL and PHY ODT are independent. 119 120 rockchip,auto_pd_dis_freq: 121 deprecated: true 122 $ref: /schemas/types.yaml#/definitions/uint32 123 description: 124 Defines the auto PD disable frequency in MHz. 125 126 rockchip,ddr3_odt_dis_freq: 127 $ref: /schemas/types.yaml#/definitions/uint32 128 minimum: 1000000 # In case anyone thought this was MHz. 129 description: 130 When the DRAM type is DDR3, this parameter defines the ODT disable 131 frequency in Hz. When the DDR frequency is less then ddr3_odt_dis_freq, 132 the ODT on the DRAM side and controller side are both disabled. 133 134 rockchip,ddr3_drv: 135 deprecated: true 136 $ref: /schemas/types.yaml#/definitions/uint32 137 description: 138 When the DRAM type is DDR3, this parameter defines the DRAM side drive 139 strength in ohms. 140 default: 40 141 142 rockchip,ddr3_odt: 143 deprecated: true 144 $ref: /schemas/types.yaml#/definitions/uint32 145 description: 146 When the DRAM type is DDR3, this parameter defines the DRAM side ODT 147 strength in ohms. 148 default: 120 149 150 rockchip,phy_ddr3_ca_drv: 151 deprecated: true 152 $ref: /schemas/types.yaml#/definitions/uint32 153 description: 154 When the DRAM type is DDR3, this parameter defines the phy side CA line 155 (incluing command line, address line and clock line) drive strength. 156 default: 40 157 158 rockchip,phy_ddr3_dq_drv: 159 deprecated: true 160 $ref: /schemas/types.yaml#/definitions/uint32 161 description: 162 When the DRAM type is DDR3, this parameter defines the PHY side DQ line 163 (including DQS/DQ/DM line) drive strength. 164 default: 40 165 166 rockchip,phy_ddr3_odt: 167 deprecated: true 168 $ref: /schemas/types.yaml#/definitions/uint32 169 description: 170 When the DRAM type is DDR3, this parameter defines the PHY side ODT 171 strength. 172 default: 240 173 174 rockchip,lpddr3_odt_dis_freq: 175 $ref: /schemas/types.yaml#/definitions/uint32 176 minimum: 1000000 # In case anyone thought this was MHz. 177 description: 178 When the DRAM type is LPDDR3, this parameter defines then ODT disable 179 frequency in Hz. When DDR frequency is less then ddr3_odt_dis_freq, the 180 ODT on the DRAM side and controller side are both disabled. 181 182 rockchip,lpddr3_drv: 183 deprecated: true 184 $ref: /schemas/types.yaml#/definitions/uint32 185 description: 186 When the DRAM type is LPDDR3, this parameter defines the DRAM side drive 187 strength in ohms. 188 default: 34 189 190 rockchip,lpddr3_odt: 191 deprecated: true 192 $ref: /schemas/types.yaml#/definitions/uint32 193 description: 194 When the DRAM type is LPDDR3, this parameter defines the DRAM side ODT 195 strength in ohms. 196 default: 240 197 198 rockchip,phy_lpddr3_ca_drv: 199 deprecated: true 200 $ref: /schemas/types.yaml#/definitions/uint32 201 description: 202 When the DRAM type is LPDDR3, this parameter defines the PHY side CA line 203 (including command line, address line and clock line) drive strength. 204 default: 40 205 206 rockchip,phy_lpddr3_dq_drv: 207 deprecated: true 208 $ref: /schemas/types.yaml#/definitions/uint32 209 description: 210 When the DRAM type is LPDDR3, this parameter defines the PHY side DQ line 211 (including DQS/DQ/DM line) drive strength. 212 default: 40 213 214 rockchip,phy_lpddr3_odt: 215 deprecated: true 216 $ref: /schemas/types.yaml#/definitions/uint32 217 description: 218 When dram type is LPDDR3, this parameter define the phy side odt 219 strength, default value is 240. 220 221 rockchip,lpddr4_odt_dis_freq: 222 $ref: /schemas/types.yaml#/definitions/uint32 223 minimum: 1000000 # In case anyone thought this was MHz. 224 description: 225 When the DRAM type is LPDDR4, this parameter defines the ODT disable 226 frequency in Hz. When the DDR frequency is less then ddr3_odt_dis_freq, 227 the ODT on the DRAM side and controller side are both disabled. 228 229 rockchip,lpddr4_drv: 230 deprecated: true 231 $ref: /schemas/types.yaml#/definitions/uint32 232 description: 233 When the DRAM type is LPDDR4, this parameter defines the DRAM side drive 234 strength in ohms. 235 default: 60 236 237 rockchip,lpddr4_dq_odt: 238 deprecated: true 239 $ref: /schemas/types.yaml#/definitions/uint32 240 description: 241 When the DRAM type is LPDDR4, this parameter defines the DRAM side ODT on 242 DQS/DQ line strength in ohms. 243 default: 40 244 245 rockchip,lpddr4_ca_odt: 246 deprecated: true 247 $ref: /schemas/types.yaml#/definitions/uint32 248 description: 249 When the DRAM type is LPDDR4, this parameter defines the DRAM side ODT on 250 CA line strength in ohms. 251 default: 40 252 253 rockchip,phy_lpddr4_ca_drv: 254 deprecated: true 255 $ref: /schemas/types.yaml#/definitions/uint32 256 description: 257 When the DRAM type is LPDDR4, this parameter defines the PHY side CA line 258 (including command address line) drive strength. 259 default: 40 260 261 rockchip,phy_lpddr4_ck_cs_drv: 262 deprecated: true 263 $ref: /schemas/types.yaml#/definitions/uint32 264 description: 265 When the DRAM type is LPDDR4, this parameter defines the PHY side clock 266 line and CS line drive strength. 267 default: 80 268 269 rockchip,phy_lpddr4_dq_drv: 270 deprecated: true 271 $ref: /schemas/types.yaml#/definitions/uint32 272 description: 273 When the DRAM type is LPDDR4, this parameter defines the PHY side DQ line 274 (including DQS/DQ/DM line) drive strength. 275 default: 80 276 277 rockchip,phy_lpddr4_odt: 278 deprecated: true 279 $ref: /schemas/types.yaml#/definitions/uint32 280 description: 281 When the DRAM type is LPDDR4, this parameter defines the PHY side ODT 282 strength. 283 default: 60 284 285 rockchip,pd-idle-ns: 286 description: 287 Configure the PD_IDLE value in nanoseconds. Defines the power-down idle 288 period in which memories are placed into power-down mode if bus is idle 289 for PD_IDLE nanoseconds. 290 291 rockchip,sr-idle-ns: 292 description: 293 Configure the SR_IDLE value in nanoseconds. Defines the self-refresh idle 294 period in which memories are placed into self-refresh mode if bus is idle 295 for SR_IDLE nanoseconds. 296 default: 0 297 298 rockchip,sr-mc-gate-idle-ns: 299 description: 300 Defines the memory self-refresh and controller clock gating idle period in nanoseconds. 301 Memories are placed into self-refresh mode and memory controller clock 302 arg gating started if bus is idle for sr_mc_gate_idle nanoseconds. 303 304 rockchip,srpd-lite-idle-ns: 305 description: 306 Defines the self-refresh power down idle period in which memories are 307 placed into self-refresh power down mode if bus is idle for 308 srpd_lite_idle nanoseonds. This parameter is for LPDDR4 only. 309 310 rockchip,standby-idle-ns: 311 description: 312 Defines the standby idle period in which memories are placed into 313 self-refresh mode. The controller, pi, PHY and DRAM clock will be gated 314 if bus is idle for standby_idle nanoseconds. 315 316 rockchip,pd-idle-dis-freq-hz: 317 description: 318 Defines the power-down idle disable frequency in Hz. When the DDR 319 frequency is greater than pd-idle-dis-freq, power-down idle is disabled. 320 See also rockchip,pd-idle-ns. 321 322 rockchip,sr-idle-dis-freq-hz: 323 description: 324 Defines the self-refresh idle disable frequency in Hz. When the DDR 325 frequency is greater than sr-idle-dis-freq, self-refresh idle is 326 disabled. See also rockchip,sr-idle-ns. 327 328 rockchip,sr-mc-gate-idle-dis-freq-hz: 329 description: 330 Defines the self-refresh and memory-controller clock gating disable 331 frequency in Hz. When the DDR frequency is greater than 332 sr-mc-gate-idle-dis-freq, the clock will not be gated when idle. See also 333 rockchip,sr-mc-gate-idle-ns. 334 335 rockchip,srpd-lite-idle-dis-freq-hz: 336 description: 337 Defines the self-refresh power down idle disable frequency in Hz. When 338 the DDR frequency is greater than srpd-lite-idle-dis-freq, memory will 339 not be placed into self-refresh power down mode when idle. See also 340 rockchip,srpd-lite-idle-ns. 341 342 rockchip,standby-idle-dis-freq-hz: 343 description: 344 Defines the standby idle disable frequency in Hz. When the DDR frequency 345 is greater than standby-idle-dis-freq, standby idle is disabled. See also 346 rockchip,standby-idle-ns. 347 348required: 349 - compatible 350 - devfreq-events 351 - clocks 352 - clock-names 353 - operating-points-v2 354 - center-supply 355 356additionalProperties: false 357 358examples: 359 - | 360 #include <dt-bindings/clock/rk3399-cru.h> 361 #include <dt-bindings/interrupt-controller/arm-gic.h> 362 memory-controller { 363 compatible = "rockchip,rk3399-dmc"; 364 devfreq-events = <&dfi>; 365 rockchip,pmu = <&pmu>; 366 interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>; 367 clocks = <&cru SCLK_DDRC>; 368 clock-names = "dmc_clk"; 369 operating-points-v2 = <&dmc_opp_table>; 370 center-supply = <&ppvar_centerlogic>; 371 rockchip,pd-idle-ns = <160>; 372 rockchip,sr-idle-ns = <10240>; 373 rockchip,sr-mc-gate-idle-ns = <40960>; 374 rockchip,srpd-lite-idle-ns = <61440>; 375 rockchip,standby-idle-ns = <81920>; 376 rockchip,ddr3_odt_dis_freq = <333000000>; 377 rockchip,lpddr3_odt_dis_freq = <333000000>; 378 rockchip,lpddr4_odt_dis_freq = <333000000>; 379 rockchip,pd-idle-dis-freq-hz = <1000000000>; 380 rockchip,sr-idle-dis-freq-hz = <1000000000>; 381 rockchip,sr-mc-gate-idle-dis-freq-hz = <1000000000>; 382 rockchip,srpd-lite-idle-dis-freq-hz = <0>; 383 rockchip,standby-idle-dis-freq-hz = <928000000>; 384 }; 385