Ttyjfyk

What would happen to a modern skyscraper if it rains micro blackholes?

What do the dots in this tr command do: tr .............A-Z A-ZA-Z <<< "JVPQBOV" (with 13 dots)

Modeling an IP Address

Email Account under attack (really) - anything I can do?

What's the point of deactivating Num Lock on login screens?

Adding span tags within wp_list_pages list items

The Clique vs. Independent Set Problem

Either or Neither in sentence with another negative

What's the output of a record cartridge playing an out-of-speed record

US citizen flying to France today and my passport expires in less than 2 months

Why is 150k or 200k jobs considered good when there's 300k+ births a month?

a relationship between local compactness and closure

What defenses are there against being summoned by the Gate spell?

Have astronauts in space suits ever taken selfies? If so, how?

How much RAM could one put in a typical 80386 setup?

Why doesn't H₄O²⁺ exist?

Is it unprofessional to ask if a job posting on GlassDoor is real?

Why Is Death Allowed In the Matrix?

Test whether all array elements are factors of a number

Equivalence principle before Einstein

Method of fabrication patents, Is it okay to import from abroad?

In Japanese, what’s the difference between “Tonari ni” (となりに) and “Tsugi” (つぎ)? When would you use one over the other?

Do I have a twin with permutated remainders?

How is it possible to have an ability score that is less than 3?

How to configure multiple SPI devices on Linux

Does the kernel delete entries in /dev on an initramfs?Why is my swap not being activated automatically via fstab?Can't access GPIOs when switching to systemd, but why?How do I recreate /dev/ttyUSB## devices that I deleted?Difference in execution of init with embedded vs. external initramfs?Unable to connect to USB CDC deviceLinux/Embedded Linux - Understanding the Kernel and additional BSP specific componentsError while building Linux kernel for versatile boardt:Alsa - why it is not working on Linux ARM?How to create device files manually use mknod?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

0

I have an embedded Linux system (F&S PicoComA5) that has shipped with a pre-configured Linux Kernel + buildroot system.

By default, only one SPI device is pre-configured, appearing in the system as
/dev/spi0.0

Now on my board, I have a second SPI devices, so I need to select another 'CS' line, and it should appear as
/dev/spi0.1

Where in the kernel or buildroot do I configure these parameters to make this second SPI device appear?

EDIT: in arch/arm/arm-mvf/arch-picocom.c, the board-specific init code, the SPI devices are initialized, I hope to find the way to make it work there!

linux kernel devices

share|improve this question

edited Mar 29 at 9:35

Juha

asked Mar 27 at 11:27

JuhaJuha

11

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  According to the product info page, the board only has 1 SPI device. fs-net.de/de/produkte/picocom/picocoma5
  
  – gerhard d.
  Mar 27 at 11:50
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  By default yes, but by using a GPIO pin as a second chip select, I feel confident an additional SPI device could be used.
  
  – Juha
  Mar 29 at 9:34
  

  
  
  
  

add a comment | 

0

I have an embedded Linux system (F&S PicoComA5) that has shipped with a pre-configured Linux Kernel + buildroot system.

By default, only one SPI device is pre-configured, appearing in the system as
/dev/spi0.0

Now on my board, I have a second SPI devices, so I need to select another 'CS' line, and it should appear as
/dev/spi0.1

Where in the kernel or buildroot do I configure these parameters to make this second SPI device appear?

EDIT: in arch/arm/arm-mvf/arch-picocom.c, the board-specific init code, the SPI devices are initialized, I hope to find the way to make it work there!

linux kernel devices

share|improve this question

edited Mar 29 at 9:35

Juha

asked Mar 27 at 11:27

JuhaJuha

11

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  According to the product info page, the board only has 1 SPI device. fs-net.de/de/produkte/picocom/picocoma5
  
  – gerhard d.
  Mar 27 at 11:50
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  By default yes, but by using a GPIO pin as a second chip select, I feel confident an additional SPI device could be used.
  
  – Juha
  Mar 29 at 9:34
  

  
  
  
  

add a comment | 

I have an embedded Linux system (F&S PicoComA5) that has shipped with a pre-configured Linux Kernel + buildroot system.

By default, only one SPI device is pre-configured, appearing in the system as
/dev/spi0.0

Now on my board, I have a second SPI devices, so I need to select another 'CS' line, and it should appear as
/dev/spi0.1

Where in the kernel or buildroot do I configure these parameters to make this second SPI device appear?

EDIT: in arch/arm/arm-mvf/arch-picocom.c, the board-specific init code, the SPI devices are initialized, I hope to find the way to make it work there!

linux kernel devices

share|improve this question

edited Mar 29 at 9:35

Juha

asked Mar 27 at 11:27

JuhaJuha

11

share|improve this question

edited Mar 29 at 9:35

Juha

asked Mar 27 at 11:27

JuhaJuha

11

share|improve this question

edited Mar 29 at 9:35

Juha

asked Mar 27 at 11:27

JuhaJuha

11

asked Mar 27 at 11:27

JuhaJuha

11

asked Mar 27 at 11:27

JuhaJuha

11