lkml.org 
[lkml]   [2010]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 07/11] ST SPEAr: Added source files for SPEAr3xx machine family
On 3/11/2010 4:11 PM, Russell King - ARM Linux wrote:
> On Tue, Mar 09, 2010 at 07:46:10AM +0100, Linus Walleij wrote:
>>> +struct amba_device uart_device = {
>>> + .dev = {
>>> + .init_name = "uart",
>>> + },
>>> + .res = {
>>> + .start = SPEAR3XX_ICM1_UART_BASE,
>>> + .end = SPEAR3XX_ICM1_UART_BASE + SPEAR3XX_ICM1_UART_SIZE - 1,
>>> + .flags = IORESOURCE_MEM,
>>> + },
>>> + .irq = {IRQ_UART, NO_IRQ},
>>> + .periphid = 0x00041011,
>>> +};
>>
>> You're hardcoding the PrimeCell ID to the ARM version, but I suspect
>> you have an ST derivate with some additional features. If you look in
>> the PL011 driver in drivers/serial/amba-pl011.c you will probably recognize
>> the modified PrimeCell IDs for vendor 0x80 (VENDOR_ST) and I think
>> you might rather need to patch this file with your new periphid and
>> possibly even implement some new extensions (if there are any).
>>
>> What value is actually in the ID registers of your cell? (Just
>> check in some debugger or simply printk() it...)
>
> There is no need to specify the ID when the device provides it - in fact
> the code will override you by reading the ID from the device if it finds
> it. The only reason to explicitly provide one is for the very early
> Primecell devices which didn't implement the ID scheme - such as PL010.
>

It is Removed.


\
 
 \ /
  Last update: 2010-03-12 06:23    [from the cache]
©2003-2011 Jasper Spaans