[PATCH v4 3/3] arm64: dts: ti: k3-am64-main: Update the location of TF-A

[Nishanth Menon]

On 23:13-20210615, Aswath Govindraju wrote:
> Due to a limitation for USB DFU boot mode, SPL load address has to be less
> than  or equal to 0x70001000. So, load address of SPL and TF-A have been
> moved to 0x70000000 and 0x701c4000 respectively.
> 
> Therefore, update TF-A's location in the device tree node.

One additional topic to add is the dependency on bootloader update for
this as well. I know things are chicken or egg kind of problem, but
will be good to mention requires newer version than 2021.xx version of
u-boot as this is an "breaking" change. And, if we block both regions
off for bootloader compatibility, that is not feasible given the
limited SRAM available as well.

> 
> Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
> ---
>  arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> index 6a883f4349cb..7ab3652dfdfb 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> @@ -24,8 +24,8 @@
>  		#size-cells = <1>;
>  		ranges = <0x0 0x00 0x70000000 0x200000>;
>  
> -		tfa-sram at 0 {
> -			reg = <0x0 0x1c000>;
> +		tfa-sram at 1c4000 {
> +			reg = <0x1c4000 0x1c000>;
>  		};
>  
>  		dmsc-sram at 1e0000 {
> -- 
> 2.17.1
> 

-- 
Regards,
Nishanth Menon
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