[U-Boot] [PATCH] imx: vf610 add function get_cpu_rev

[Peng Fan <b51431@freescale.com>]

Hi Stefano,

On Tue, Sep 01, 2015 at 09:28:40AM +0200, Stefano Babic wrote:
>Hi Peng,
>
>On 01/09/2015 03:40, Peng Fan wrote:
>> Since we need to support runtime check for different drivers,
>> we need to add get_cpu_rev for vf610.
>> 
>> This patch only introduce a empty implementation to avoid build errors,
>> later more stuff can be added if need to check vf610 cpu types.
>> 
>> Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
>> Cc: Stefano Babic <sbabic@denx.de>
>> ---
>>  arch/arm/cpu/armv7/vf610/generic.c | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>> 
>> diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c
>> index 05c401d..bd948cb 100644
>> --- a/arch/arm/cpu/armv7/vf610/generic.c
>> +++ b/arch/arm/cpu/armv7/vf610/generic.c
>> @@ -266,6 +266,17 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
>>  }
>>  #endif
>>  
>> +/*
>> + * Empty function
>> + * Several drivers use runtime check, which needs get_cpu_rev.
>> + * If later we need to do runtime check for vf610, we can add
>> + * more stuff here.
>> + */
>> +u32 get_cpu_rev(void)
>> +{
>> +	return 0;
>> +}
>> +
>>  #if defined(CONFIG_DISPLAY_CPUINFO)
>>  static char *get_reset_cause(void)
>>  {
>> 
>
>If there is really no way to get the cpu revision from the SOC, I
>suggest we use the same approach of MXC_CPU_MX6SOLO with a "dummy" cpu.
>Something like :
>
>#define MXC_CPU_VF610           0xF6 /* dummy CPU */
>
>"F6" from vF610, of course, instead of returning 0.

I not have vf610 board in hand and need to check with others about this.
Not sure when I can get the result. So now for quick fix, using your way with
your Suggested-by. Later, if I can get the results, can use another
patch to fix the cpu type, because build errors should be at high
priority to be fixed. What do you think?

Regards,
Peng.

>
>Best regards,
>Stefano Babic
>
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