LS1043 GPIO support in Linux SDK

cancel
Showing results for 
Search instead for 
Did you mean: 

LS1043 GPIO support in Linux SDK

No ratings

LS1043 GPIO support in Linux SDK

This document introduces how to configure RCW to support GPIO on LS1043 platform, how to configure Linux Kernel to load Linux GPIO driver to access GPIO from SYSFS and using loopback method to do verification on the target board.

  1. RCW configuration to support GPIO
  2. Configure GPIO driver in Linux Kernel
  3. Verify GPIO on the target board
Labels (1)
Attachments
Comments

For all those who - like me - were searching for a list to map the individual pins to the GPIO number..

This is the answer I got from NXP Technical Support (thank you, Fedor!):

modified table (refer to the QorIQ LS1043A Reference Manual, Table 2-3. CCSR Block Base Address Map):
GPIOs 384-415, /soc/gpio@2330000: GPIO4[0-31]
GPIOs 416-447, /soc/gpio@2320000: GPIO3[0-31]
GPIOs 448-479, /soc/gpio@2310000: GPIO2[0-31]
GPIOs 480-511, /soc/gpio@2300000: GPIO1[0-31]
even if not all 32 signals are implemented for each GPIOn set, the math is identical - i.e., for GPIO4_03 it is:
384+3=387

Version history
Revision #:
1 of 1
Last update:
‎09-20-2016 01:32 AM
Updated by: