FAST BOOT FOR lx2160 IN adas
To speed up bringup of LX2 chip-based systems
•Pain Points to Address
The bringup time is much longer than 3s, which is very sensitive in ADAS systems or time-sensitive systems.
•Value Proposition / Key Features
The guide can help customers shorten uboot time from 5s to less than 1.5s, saving more than 70% bootup time.
Demo based on LX2160ARDB board.
Reference codes and patches.
Guide for Fast boot document.
Fast boot 广泛用于嵌入式设备，现以lx2160ardb板为例进行相关探索。启动流程：
diff --git a/lx2160asi/flexspi_divisor_32.rcw b/lx2160asi/flexspi_divisor_32.rcw
index 422139c..0f8d5c9 100644
@@ -7,8 +7,10 @@
* Modify FlexSPICR1 register, to increase FlexSPI clock closer to 50MHz,
* with divisor value as 32.
* => 750 * 2 / 32 ==> 46.875MHz
+ *write 0x1e00900,0x00000013
+ * 0f -12 =125M