Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Software > Linux - Kernel
User Name
Linux - Kernel This forum is for all discussion relating to the Linux kernel.


  Search this Thread
Old 08-12-2018, 07:19 AM   #1
LQ Newbie
Registered: Aug 2018
Posts: 1

Rep: Reputation: Disabled
how to loop over multiple registers in linux device tree node?

I implemented a generic driver, in the driver I just want to go over each registered device and do something.
my driver is generic so I don't want to know anything in advance about the devices.

I have some device tree nodes:

uart0: uart@1000000 {
compatible = "generic-driver";
reg = <0x1000000 0x1000>,<0x1001000 0x1000>,<0x1002000 0x1000>;

uart1: uart@2000000 {
compatible = "generic-driver";
reg = <0x2000000 0x1000>,<0x2001000 0x1000>,<0x2002000 0x1000>;

in the driver I know how to get first offset and size with platform_get_resource, but what if I have multiple ranges?
I saw an option to get it by add reg-names:

reg = <0x2000000 0x1000>,<0x2001000 0x1000>,<0x2002000 0x1000>;
reg-names = "uart0_0","urat0_1","uart0_2";
so in the driver I can use platform_get_resource_byname, but there I need to know in the driver the regs names in advance - but it'll be no more generic - unwanted!!

so my question is, is there a way to loop over these regs without early information in the driver?

Thanks in advance!!


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Emulate Multiple Virtual port / Multiple device node by SW for single device driver (SSI) jegadezz Linux - General 0 11-14-2017 10:44 AM
how to get every node called for out of a binary tree? BW-userx Programming 8 09-09-2017 05:35 PM
device tree node failed to get resource vivek thullimalli Linux - Newbie 0 08-27-2017 10:55 PM > Forums > Linux Forums > Linux - Software > Linux - Kernel

All times are GMT -5. The time now is 12:38 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration