On 10 April 2017 at 20:13, Kever Yang <kever.y...@rock-chips.com> wrote:
> Hi Eric,
>
>
>
> On 04/10/2017 09:53 AM, Eric Gao wrote:
>>
>> when enable PMIC rk808,the system will halt at very
>> early stage,log is shown as bellow.
>>
>> INFO: plat_rockchip_pmu_init(1211): pd status 3e
>> INFO: BL31: Initializing runtime services
>> INFO: BL31: Preparing for EL3 exit to normal world
>> INFO: Entry point address = 0x200000
>> INFO: SPSR = 0x3c9
>> time 44561b, 0 (<<----Just stop here)
>>
>> It's caused by the absence of "{ }" in syscon_rk3399.c
>> ,which will lead to memory overflow like below.According
>> to Sysmap file ,we can find the function buck_get_value
>> of rk808 is just follow the compatible struct,the pointer
>> "of_match" point to "buck_get_value",but it is not a
>> struct and don't have member of compatible, In this case,
>> system crash. So,on the face, it looks like that rk808 is
>> guilty.but he is really innocent.
>>
>> while (of_match->compatible) { <<----------
>> if (!strcmp(of_match->compatible, compat)) {
>> *of_idp = of_match;
>> return 0;
>> }
>> of_match++;
>> }
>>
>> Signed-off-by: Eric Gao <eric....@rock-chips.com>
>> ---
>>
>> arch/arm/mach-rockchip/rk3399/syscon_rk3399.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> index d32985b..74d4552 100644
>> --- a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> +++ b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c
>> @@ -14,6 +14,7 @@ static const struct udevice_id rk3399_syscon_ids[] = {
>> { .compatible = "rockchip,rk3399-pmugrf", .data =
>> ROCKCHIP_SYSCON_PMUGRF },
>> { .compatible = "rockchip,rk3399-pmusgrf", .data =
>> ROCKCHIP_SYSCON_PMUSGRF },
>> { .compatible = "rockchip,rk3399-cic", .data = ROCKCHIP_SYSCON_CIC
>> },
>> + { }
>> };
>> U_BOOT_DRIVER(syscon_rk3399) = {
>
>
> Reviewed-by: Kever Yang <kever.y...@rock-chips.com>
> Tested-by: Kever Yang <kever.y...@rock-chips.com>
>
> Thanks,
> - Kever
>
>
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Applied to u-boot-rockchip, thanks!
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