[PATCH v2] ARM: dts: at91: sama5d3: add u-boot properties to sama5d3 pit timer

[Eugen.Hristev at microchip.com]

On 4/7/21 12:16 PM, Manuel Luís Reis wrote:
> Hi,
> 
> @Derald: Thanks for trying this out.
> 
> @Eugen: For what is worth, I can also confirm that I also tried with
> the latest version v2021.04 and the board boots OK out of the box with
> this patch only.
> 

Ok, great news ! Thanks.

Until this patch can reach the master of u-boot, if anyone needs a tree, 
you can have my testing branch in u-boot-atmel custodian tree at denx:

https://source.denx.de/u-boot/custodians/u-boot-atmel/-/tree/testing

Eugen

> ------------------------------------------------
> RomBOOT
> <debug_uart>
> U-Boot SPL 2021.04-00372-g90eba245a6-dirty (Apr 07 2021 - 10:05:18 +0100)
> Trying to boot from MMC1
> <debug_uart>
> U-Boot 2021.04-00372-g90eba245a6-dirty (Apr 07 2021 - 10:05:18 +0100)
> CPU: SAMA5D36
> Crystal frequency:       12 MHz
> .....
> ------------------------------------------------
> 
> Thanks,
> Manuel
> 
> On Wed, 7 Apr 2021 at 07:32, <Eugen.Hristev at microchip.com> wrote:
>>
>> On 4/7/21 1:16 AM, Derald Woods wrote:
>>> On Tue, Apr 6, 2021 at 4:40 AM Manuel Reis <mluis.reis at gmail.com
>>> <mailto:mluis.reis at gmail.com>> wrote:
>>>
>>>      in the early SPL boot stage whenever there is a call to udelay,
>>>      dm_timer_init fails to find the pit timer whenever it traverses
>>>      the device tree, if this property is not present
>>>
>>>      Signed-off-by: Manuel Reis <mluis.reis at gmail.com
>>>      <mailto:mluis.reis at gmail.com>>
>>>      CC: Eugen Hristev <eugen.hristev at microchip.com
>>>      <mailto:eugen.hristev at microchip.com>>
>>>      ---
>>>        arch/arm/dts/sama5d3.dtsi | 1 +
>>>        1 file changed, 1 insertion(+)
>>>
>>>      diff --git a/arch/arm/dts/sama5d3.dtsi b/arch/arm/dts/sama5d3.dtsi
>>>      index 6ed218eaad..42c30e9f30 100644
>>>      --- a/arch/arm/dts/sama5d3.dtsi
>>>      +++ b/arch/arm/dts/sama5d3.dtsi
>>>      @@ -1320,6 +1320,7 @@
>>>                                       reg = <0xfffffe30 0xf>;
>>>                                       interrupts = <3 IRQ_TYPE_LEVEL_HIGH 5>;
>>>                                       clocks = <&mck>;
>>>      +                               u-boot,dm-pre-reloc;
>>>                               };
>>>
>>>                               watchdog at fffffe40 {
>>>      --
>>>      2.27.0
>>>
>>>
>>> This patch, on top of v2021.04, allows my SAMA5D3 Xplained board to boot
>>> normally again.
>>>
>>> Tested-by: Derald D. Woods <woods.technical at gmail.com
>>> <mailto:woods.technical at gmail.com>>
>>>
>>
>> Hi Derald,
>>
>> Could I ask, you are using the SPL to boot your board ?
>> Did you have to remove any udelay from the ddr2_init code , or it booted
>> out of the box by applying this patch only ?
>>
>> Thanks,
>> Eugen