diff --git a/docs/pi_zero_2_w_Config.md b/docs/pi_zero_2_w_Config.md
index c4373ec..3c30b50 100644
--- a/docs/pi_zero_2_w_Config.md
+++ b/docs/pi_zero_2_w_Config.md
@@ -2,14 +2,26 @@
 
 # Pi Zero 2 W Config Tunning
 
-## 1.Config
+## 1.Config and cmdline
 
-Add:
+Config add:
 
 ```
 device_tree=bcm2710-rpi-zero-2.dtb
+gpu_mem=16
+gpu_mem_512=16
 ```
 
+Cmdline add:
+
+```
+smsc95xx.turbo_mode=N cma=16M CMA=16M
+```
+
+**Note:**
+
+The min GPU size is >=16M
+
 ## 2.Disable BT
 
 Add: