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

[Derald Woods]

On Wed, Apr 7, 2021 at 1:32 AM <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 ?
>

With just this patch on top of v2021.04, the board booted as expected. It
did not work with v2021.01. So this patch works for "v2021.04" onward. I
did not touch ddr2_init code.

Derald



>
> Thanks,
> Eugen
>