[U-Boot] [RFC PATCH] Fix bug in T4240QDS code. Don't access nonexistent registers

[York Sun]

This patch points out a bug in T4240QDS code. But the fix is not correct.

Shaohui, please take a closer look and submit a patch to fix it. I believe the
code should check each Bank of each SerDes (totally 8 clocks).

Thanks Vasili for pointing out.

York


On 06/16/2014 07:41 AM, Vasili Galka wrote:
> The code in misc_init_r() verifies actual SERDES clocks versus
> expected. It supposes that the number of clocks is MAX_SERDES.
> However, the number of pllcr0 registers is only SRDS_MAX_BANK. This
> clearly results in access to wrong memory. I don't have the datasheet
> to design a correct solution, but at least let's change it to access
> only the existing registers.
> 
> Signed-off-by: Vasili Galka <vvv444 at gmail.com>
> Cc: York Sun <yorksun at freescale.com>
> ---
>  board/freescale/t4qds/t4240qds.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/board/freescale/t4qds/t4240qds.c b/board/freescale/t4qds/t4240qds.c
> index fe1bc7f..6646042 100644
> --- a/board/freescale/t4qds/t4240qds.c
> +++ b/board/freescale/t4qds/t4240qds.c
> @@ -662,7 +662,7 @@ int misc_init_r(void)
>  		}
>  	}
>  
> -	for (i = 0; i < MAX_SERDES; i++) {
> +	for (i = 0; i < SRDS_MAX_BANK; i++) {
>  		u32 pllcr0 = srds_regs->bank[i].pllcr0;
>  		u32 expected = pllcr0 & SRDS_PLLCR0_RFCK_SEL_MASK;
>  		if (expected != actual[i]) {
>