soc/ti/keystone-navigator-qmss.txt

5 multi-core Navigator. QMSS consist of queue managers, packed-data structure
9 management of the packet queues. Packets are queued/de-queued by writing or
20 - compatible	: Must be "ti,keystone-navigator-qmss".
21 		: Must be "ti,66ak2g-navss-qm" for QMSS on K2G SoC.
22 - clocks	: phandle to the reference clock for this device.
23 - queue-range	: <start number> total range of queue numbers for the device.
24 - linkram0	: <address size> for internal link ram, where size is the total
26 - linkram1	: <address size> for external link ram, where size is the total
29 - qmgrs         : child node describing the individual queue managers on the
32   -- managed-queues	: the actual queues managed by each queue manager
33 			  instance, specified as <"base queue #" "# of queues">.
34   -- reg		: Address and size of the register set for the device.
37 			  - Queue Peek region.
38 			  - Queue status RAM.
39 			  - Queue configuration region.
40 			  - Descriptor memory setup region.
41 			  - Queue Management/Queue Proxy region for queue Push.
42 			  - Queue Management/Queue Proxy region for queue Pop.
45 			  - Queue Peek region.
46 			  - Queue configuration region.
47 			  - Queue Management/Queue Proxy region for queue Push/Pop.
49 - queue-pools	: child node classifying the queue ranges into pools.
51 		  - qpend	    : pool of qpend(interruptible) queues
52 		  - general-purpose : pool of general queues, primarily used
55 		  - accumulator	    : pool of queues on PDSP accumulator channel
57   -- qrange		: number of queues to use per queue range, specified as
59   -- interrupts		: Optional property to specify the interrupt mapping
62   -- qalloc-by-id	: Optional property to specify that the queues in this
64   -- accumulator	: Accumulator channel specification. Any of the PDSPs in
76 			  <pdsp-id, channel, entries, pacing mode, latency>
77 			  pdsp-id     : QMSS PDSP running accumulator firmware
89   -- multi-queue	: Optional property to specify that the channel has to
91 - descriptor-regions	: child node describing the memory regions for keystone
94   -- id				: region number in QMSS.
95   -- region-spec		: specifies the number of descriptors in the
98   -- link-index			: start index, i.e. index of the first
102 - dma-coherent	: Present if DMA operations are coherent.
103 - pdsps		: child node describing the PDSP configuration.
104   -- firmware		: firmware to be loaded on the PDSP.
105   -- id			: the qmss pdsp that will run the firmware.
106   -- reg		: Address and size of the register set for the PDSP.
109 			  - PDSP internal RAM region.
110 			  - PDSP control/status region registers.
111 			  - QMSS interrupt distributor registers.
112 			  - PDSP command interface region.
117 	compatible = "ti,keystone-qmss";
118 	dma-coherent;
119 	#address-cells = <1>;
120 	#size-cells = <1>;
123 	queue-range	= <0 0x4000>;
128 		#address-cells = <1>;
129 		#size-cells = <1>;
132 			managed-queues = <0 0x2000>;
142 			managed-queues = <0x2000 0x2000>;
151 	queue-pools {
153 			qpend-0 {
159 			qpend-1 {
167 				qalloc-by-id;
169 			qpend-2 {
179 		general-purpose {
180 			gp-0 {
183 			netcp-tx {
185 				qalloc-by-id;
189 			acc-0 {
193 				multi-queue;
194 				qalloc-by-id;
196 			acc-1 {
200 				multi-queue;
202 			acc-2 {
206 				multi-queue;
208 			acc-3 {
212 				multi-queue;
216 	descriptor-regions {
217 		#address-cells = <1>;
218 		#size-cells = <1>;
220 		region-12 {
222 			region-spec = <8192 128>; /* num_desc desc_size */
223 			link-index = <0x4000>;
227 		#address-cells = <1>;
228 		#size-cells = <1>;