[PATCH] ARM: i.MX: Kamstrup mx7 concentrator board support

[Ahmad Fatoum]

Hello,

On 12.04.21 16:17, Lars Pedersen wrote:
>> For the simple case of toggling a reset, likely only difference now is that you
>> can verify your driver availability with drvinfo. I'd prefer new code uses board
>> from the get-go though if board code is really needed.
>>
> 
> I got it working but we have decided to update the hardware to reset
> the TPM after your colleague mentioned how it should be done correctly
> :)
> 
> Just to be clear. I can now remove board.c as you first mentioned
> since I don't need any special stuff.

Great!

> Also I need to update imx_v7_defconfig with this board with default value yes.

This is optional. I'd recommend you do it, so you benefit from build-time coverage for
your board-specific code.

Cheers,
Ahmad

> 
>> Cheers,
>> Ahmad
>>
>>>
>>>>
>>>>>>> +}
>>>>>>> +
>>>>>>> +static void __noreturn kamstrup_mx7_board_restart_gpio(struct restart_handler *rst)
>>>>>>> +{
>>>>>>> +     imx7_setup_pad(MX7D_PAD_ENET1_TX_CLK__GPIO7_IO12);
>>>>>>> +
>>>>>>> +     gpio_direction_output(BOARD_RESTART_GPIO, 0);
>>>>>>> +     mdelay(1);
>>>>>>> +     gpio_set_value(BOARD_RESTART_GPIO, 0);
>>>>>>
>>>>>> I just sent out a patch[1] with a driver implementing the "gpio-restart" device
>>>>>> tree binding. Could you test that one and use it here instead?
>>>>>>
>>>>>
>>>>> I have applied the patches on a master branch (Last patch failed to
>>>>> apply but was only watchdog) and the gpio-restart works perfectly.
>>>>
>>>> Thanks for testing! You can add your Tested-By on the patch in question
>>>> if you like.
>>>>
>>>>>
>>>>>>> +
>>>>>>> +     hang();
>>>>>>> +}
>>>>>>> +
>>>>>>> +static int kamstrup_mx7_concentrator_coredevices_init(void)
>>>>>>> +{
>>>>>>> +     kamstrup_mx7_tpm_reset();
>>>>>>> +     restart_handler_register_fn("board", kamstrup_mx7_board_restart_gpio);
>>>>>>> +     barebox_set_model("Kamstrup OMNIA Concentrator");
>>>>>>
>>>>>> The default model name is "Kamstrup OMNIA Flex Concentrator".
>>>>>> If that's too long, you could override /model in the barebox device tree.
>>>>>> With the changes suggested above, you could drop board.c then altogether.
>>>>>>
>>>>>
>>>>> I'll move this into the device tree or delete it entirely.
>>>>
>>>> Great. :-)
>>>>
>>>>
>>>> Cheers,
>>>> Ahmad
>>>>
>>>> --
>>>> Pengutronix e.K.                           |                             |
>>>> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
>>>> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
>>>> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
>>>
>>
>> --
>> Pengutronix e.K.                           |                             |
>> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
>> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
>> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |