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Generic Pin Configuration - Pin Control Subsystem

Avatar for Matheus Castello Matheus Castello
August 25, 2018
Technology
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Generic Pin Configuration - Pin Control Subsystem

Avatar for Matheus Castello

Matheus Castello

August 25, 2018
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Transcript

  1. GENERIC PIN CONFIGURATION PIN CONTROL SUBSYSTEM Matheus Castello matheus@castello.eng.br

  2. MATHEUS DE BARROS CASTELLO 27 year old, BS in Computer

    Science System SW Engineer at SIDIA since 2015 Linux Kernel Developer - pinctrl-bcm2835 contributions Maker Enthusiast in Spare Time WHO I AM ?
  3. None

  4. GENERIC PIN CONFIGURATION? PIN CONFIGURATION AND MULTIPLEXING PIN CONTROL SUBSYSTEM?

    DEVICE TREE BINDINGS?

  5. PIN CONFIGURATION HOW KERNEL KNOW PERIPHERALS THAT ARE CONNECTED ?

  6. PIN CONFIGURATION PC ARCHITECTURE - AUTO ENUMERATION BUS

  7. PIN CONFIGURATION? EMBEDDED SYSTEMS - PERIPHERALS DIRECT CONNECTED TO GPIO

  8. DEVICE TREE DEVICE TREE DESCRIBE HARDWARE TO KERNEL

  9. DEVICE TREE

  10. GPIO - PIN CONFIGURATION AND MULTIPLEXING PIN CONFIGURATION AND MULTIPLEXING

  11. PIN CONFIGURATION AND MULTIPLEXING GPIO - GENERAL PURPOSE INPUT OUTPUT

  12. SETTING UP GPIO PIN CONFIGURATION AND MULTIPLEXING PIN MULTIPLEXING PIN

    CONFIGURATION

  13. SETTING UP GPIO PIN CONFIGURATION AND MULTIPLEXING PIN CONTROL SUBSYSTEM

  14. PIN CONTROL DEVICE TREE BINDINGS DEFINE PIN CONTROL PROPERTIES Documentation/device-tre/bindings/pinctrl/brcm,bcm2835.txt

  15. PIN CONTROL PARSE DEVICE TREE PINCTRL BINDINGS - APPLY IT

    IN CHIP REGISTERS drivers/pinctrl/bcm/pinctrl-bcm2835.c PARSE PINCTRL BINDINGS WRITE PIN CONF REGISTERS WRITE PIN MUX REGISTERS

  16. REAL TESTING - SOUND CLAP DEVICE EXAMPLE OF USE IN

    DEVICE DRIVE

  17. PINCTRL LIVE TEST CHANGING SOME DEVICE TREE

  18. GENERIC PIN CONFIGURATION? HOUSE OF MOTHER JOAN

  19. GENERIC PIN CONFIGURATION KEEPING PINCTRL SUSBSYSTEM SYNERGY

  20. GENERIC PIN CONFIGURATION KEEPING PINCTRL SUSBSYSTEM SYNERGY

  21. GENERIC PIN CONFIGURATION KEEPING PINCTRL SUSBSYSTEM SYNERGY

  22. GENERIC PIN CONFIGURATION KEEPING PINCTRL SUSBSYSTEM EASY

  23. GENERIC PIN CONFIGURATION KEEPING PINCTRL SUSBSYSTEM EASY

  24. GENERIC PIN CONFIGURATION EACH VENDOR HAVE YOUR WAY TO APPLY

    MAPPED DATA

  25. GENERIC PIN CONFIGURATION EACH VENDOR HAVE YOUR WAY TO APPLY

    MAPPED DATA

  26. PINCTRL LIVE TEST CHANGING SOME DEVICE TREE

  27. Q&A

  28. Matheus Castello matheus@castello.eng.br THANK YOU