Lines Matching +full:cortex +full:- +full:a15
6 1 - Introduction
12 - socket
13 - cluster
14 - core
15 - thread
18 symmetric multi-threading (SMT) is supported or not.
29 Currently, only ARM/RISC-V intend to use this cpu topology binding but it may be
39 2 - cpu-map node
42 The ARM/RISC-V CPU topology is defined within the cpu-map node, which is a direct
46 - cpu-map node
48 Usage: Optional - On SMP systems provide CPUs topology to the OS.
51 cpu-map node.
53 Description: The cpu-map node is just a container node where its
56 Node name must be "cpu-map".
58 The cpu-map node's parent node must be the cpus node.
60 The cpu-map node's child nodes can be:
62 - one or more cluster nodes or
63 - one or more socket nodes in a multi-socket system
67 The cpu-map node can only contain 4 types of child nodes:
69 - socket node
70 - cluster node
71 - core node
72 - thread node
77 only be defined within the cpu-map node and every core/thread in the
82 2.1 - cpu-map child nodes naming convention
85 cpu-map child nodes must follow a naming convention where the node name
90 cpu-map child nodes which do not share a common parent node can have the same
91 name (ie same number N as other cpu-map child nodes at different device tree
95 3 - socket/cluster/core/thread node bindings
100 - socket node
102 Description: must be declared within a cpu-map node, one node
118 - cluster node
120 Description: must be declared within a cpu-map node, one node
130 - one or more cluster nodes; or
131 - one or more core nodes
135 - core node
148 - cpu
157 - one or more thread nodes
161 - thread node
173 - cpu
180 4 - Example dts
183 Example 1 (ARM 64-bit, 16-cpu system, two clusters of clusters in a single
187 #size-cells = <0>;
188 #address-cells = <2>;
190 cpu-map {
278 compatible = "arm,cortex-a57";
280 enable-method = "spin-table";
281 cpu-release-addr = <0 0x20000000>;
286 compatible = "arm,cortex-a57";
288 enable-method = "spin-table";
289 cpu-release-addr = <0 0x20000000>;
294 compatible = "arm,cortex-a57";
296 enable-method = "spin-table";
297 cpu-release-addr = <0 0x20000000>;
302 compatible = "arm,cortex-a57";
304 enable-method = "spin-table";
305 cpu-release-addr = <0 0x20000000>;
310 compatible = "arm,cortex-a57";
312 enable-method = "spin-table";
313 cpu-release-addr = <0 0x20000000>;
318 compatible = "arm,cortex-a57";
320 enable-method = "spin-table";
321 cpu-release-addr = <0 0x20000000>;
326 compatible = "arm,cortex-a57";
328 enable-method = "spin-table";
329 cpu-release-addr = <0 0x20000000>;
334 compatible = "arm,cortex-a57";
336 enable-method = "spin-table";
337 cpu-release-addr = <0 0x20000000>;
342 compatible = "arm,cortex-a57";
344 enable-method = "spin-table";
345 cpu-release-addr = <0 0x20000000>;
350 compatible = "arm,cortex-a57";
352 enable-method = "spin-table";
353 cpu-release-addr = <0 0x20000000>;
358 compatible = "arm,cortex-a57";
360 enable-method = "spin-table";
361 cpu-release-addr = <0 0x20000000>;
366 compatible = "arm,cortex-a57";
368 enable-method = "spin-table";
369 cpu-release-addr = <0 0x20000000>;
374 compatible = "arm,cortex-a57";
376 enable-method = "spin-table";
377 cpu-release-addr = <0 0x20000000>;
382 compatible = "arm,cortex-a57";
384 enable-method = "spin-table";
385 cpu-release-addr = <0 0x20000000>;
390 compatible = "arm,cortex-a57";
392 enable-method = "spin-table";
393 cpu-release-addr = <0 0x20000000>;
398 compatible = "arm,cortex-a57";
400 enable-method = "spin-table";
401 cpu-release-addr = <0 0x20000000>;
405 Example 2 (ARM 32-bit, dual-cluster, 8-cpu system, no SMT):
408 #size-cells = <0>;
409 #address-cells = <1>;
411 cpu-map {
445 compatible = "arm,cortex-a15";
451 compatible = "arm,cortex-a15";
457 compatible = "arm,cortex-a15";
463 compatible = "arm,cortex-a15";
469 compatible = "arm,cortex-a7";
475 compatible = "arm,cortex-a7";
481 compatible = "arm,cortex-a7";
487 compatible = "arm,cortex-a7";
492 Example 3: HiFive Unleashed (RISC-V 64 bit, 4 core system)
495 #address-cells = <2>;
496 #size-cells = <2>;
498 model = "sifive,hifive-unleashed-a00";
502 #address-cells = <1>;
503 #size-cells = <0>;
504 cpu-map {
551 [3] RISC-V Linux kernel documentation