Changes between Version 73 and Version 74 of wireless/wifi

Timestamp:

05/25/2022 11:10:37 PM (3 years ago)

Author:

Cale Collins

Comment:

added note in increasing CMA for ath11k

wireless/wifi

@@ -857 +857 @@
 reboot
 }}}
-
 * Verify the interface is available using the command "ls /sys/class/net".
+
+More CMA mememory may need to be alocated.  
+
+In dmesg check for messages reguarding inadiquate CMA:
+
+{{{
+[    7.533137] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.541360] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.549628] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.557880] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.566108] cma: cma_alloc: reserved: alloc failed, req-size: 256 pages, ret: -12
+[    7.574106] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.582373] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.590731] cma: cma_alloc: reserved: alloc failed, req-size: 256 pages, ret: -12
+[    7.598641] cma: cma_alloc: reserved: alloc failed, req-size: 512 pages, ret: -12
+[    7.606884] cma: cma_alloc: reserved: alloc failed, req-size: 256 pages, ret: -12
+
+}}}
+
+To remedy:
+
+{{{#!bash
+#in U-boot
+setenv bootargs ${bootargs} cma=128M
+saveenv
+}}}
+
+
 
 Speed testing was bottlenecked by the router being used.  WLE3000H2 maxed out it's throughput.