i.MX ProcessorsのトピックRe: uboot shutdown

uboot shutdown

xrztech_wen — Wed, 02 Nov 2016 09:14:50 GMT

Dear All,

I'm working on imx7d,android M6.0.1. now I meet one problem ,can anyone help me ?

By default,the uboot source code about imx7d didnot support the shutdown,so I want to add this feature.

On the mx6sl,it had shutdown funtion:

#define SNVS_LPCR 0x38
static void mx6_snvs_poweroff(void)
{
u32 value;
void __iomem *mx6_snvs_base = MX6_IO_ADDRESS(MX6Q_SNVS_BASE_ADDR);

   value = readl(mx6_snvs_base + SNVS_LPCR);
   /* set TOP and DP_EN bit */
   writel(value | 0x60, mx6_snvs_base + SNVS_LPCR);
}

so,I want to write one shutdown funtion follow this method,but I didnot know the register address in imx7d,can anyone tell me how to get the register address in uboot ?

Thanks very much!

BTW,

1.the uboot version is 2015/04.

Re: uboot shutdown

mike_susen — Wed, 02 Nov 2016 11:21:52 GMT

Hi wen,

look at this document https://community.nxp.com/docs/DOC-93964

Michal

Re: uboot shutdown

xrztech_wen — Wed, 02 Nov 2016 11:53:39 GMT

Hi,Mike Susen,

Thanks very much for your help.

I had saw this document,but it was for i.MX6,and the uboot version is 2009.08.

Now the u-boot version is 2015.04,and I cannot find this funtions in this version,so I think this patch is didnot fix me,can you help me to find another method?

Thanks very much!

Re: uboot shutdown

mike_susen — Wed, 02 Nov 2016 14:22:29 GMT

Michal

Re: uboot shutdown

xrztech_wen — Thu, 03 Nov 2016 01:57:46 GMT

HI,Mike Susen,

Thanks,I had seen the page 956, and found the LPCR Address:

but, I want to know the SNVS base Address,like "MX6Q_SNVS_BASE_ADDR",I want to add one define like this:

#define MX7D_SNVS_BASE_ADDR 0xXXXX

Then,I can use this address to poweroff,so can you tell me where to find this address?

Thanks very much!

Re: uboot shutdown

mike_susen — Mon, 07 Nov 2016 08:25:20 GMT

Here you have complete definition tree

#define AIPS1_ARB_BASE_ADDR          0x02000000
#define ATZ1_BASE_ADDR               AIPS1_ARB_BASE_ADDR
#define AIPS1_OFF_BASE_ADDR          (ATZ1_BASE_ADDR + 0x80000)
#define MX6Q_SNVS_BASE_ADDR          (AIPS1_OFF_BASE_ADDR + 0x4C000)‍‍‍‍

Michal

Re: uboot shutdown

xrztech_wen — Mon, 07 Nov 2016 08:44:29 GMT

HI,Mike,

Thanks.