Hi Dann,
On Mon, Jun 8, 2015 at 8:44 PM, Dann Frazier <dann.frazier@xxxxxxxxxxxxx> wrote:
> On Tue, Jun 2, 2015 at 1:19 PM, Tai Nguyen <ttnguyen@xxxxxxx> wrote:
>> This patch adds syscon poweroff device node to support poweroff feature
>> on APM X-Gene Mustang platform
>
> hey Tai,
> The reboot changes work just fine for me, but poweroff does not:
>
> [ OK ] Reached target Final Step.
> Starting Power-Off...
> reboot: Power down
> Unable to poweroff system
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
>
> CPU: 0 PID: 1 Comm: systemd-shutdow Tainted: G W 4.1.0-rc7+ #1
> Hardware name: APM X-Gene Mustang board (DT)
> Call trace:
> [<ffffffc00008990c>] dump_backtrace+0x0/0x11c
> [<ffffffc000089a38>] show_stack+0x10/0x1c
> [<ffffffc0005b447c>] dump_stack+0x88/0xc8
> [<ffffffc0005b3374>] panic+0xe0/0x220
> [<ffffffc0000b5f24>] do_exit+0x990/0x994
> [<ffffffc0000d06bc>] SyS_reboot+0x14c/0x208
> ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
>
> -dann
>
Thanks for testing my patches.
On APM X-Gene Mustang platform, power off circuit is controlled by firmware.
It requires a firmware update to support power off feature.
May I ask what firmware version you're running on?
Tai
>> Signed-off-by: Tai Nguyen <ttnguyen@xxxxxxx>
>> ---
>> arch/arm64/boot/dts/apm/apm-mustang.dts | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/apm/apm-mustang.dts b/arch/arm64/boot/dts/apm/apm-mustang.dts
>> index 83578e7..910d561 100644
>> --- a/arch/arm64/boot/dts/apm/apm-mustang.dts
>> +++ b/arch/arm64/boot/dts/apm/apm-mustang.dts
>> @@ -23,6 +23,18 @@
>> device_type = "memory";
>> reg = < 0x1 0x00000000 0x0 0x80000000 >; /* Updated by bootloader */
>> };
>> +
>> + poweroff_mbox: poweroff_mbox@10548000 {
>> + compatible = "syscon";
>> + reg = <0x0 0x10548000 0x0 0x30>;
>> + };
>> +
>> + poweroff: poweroff@10548010 {
>> + compatible = "syscon-poweroff";
>> + regmap = <&poweroff_mbox>;
>> + offset = <0x10>;
>> + mask = <0x1>;
>> + };
>> };
>>
>> &pcie0clk {
>> --
>> 1.7.9.5
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
Tai
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
