[U-Boot] of-platdata address map decode for 64-bits

From: Simon Glass <sjg@chromium.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] of-platdata address map decode for 64-bits
Date: Thu, 26 Jan 2017 07:22:48 -0700	[thread overview]
Message-ID: <CAPnjgZ1ukVVQ1Zg_M14hkwfs2qc5y=Ja5NMSYAhuWL3vxp+JzA@mail.gmail.com> (raw)
In-Reply-To: <587F0D35.6070608@rock-chips.com>

Hi Kever,

On 17 January 2017 at 23:37, Kever Yang <kever.yang@rock-chips.com> wrote:
> Hi Simon,
>
>     For my rk3399(64bit) dts, the address is described as below:
> #address-cells = <2>;
> reg = <0x0 0xfe320000 0x0 0x4000>;
>
> not like 32-bit soc which reg address describe like:
> reg = <0xfe320000 0x4000>;
>
>     There should have some update for this dts decode, right?
> like:
> map_sysmem()
> regmap_init_mem_platdata()
>
>     Do you have a idea to update all these kind of function call?
> It will be very great if you can send a patch for it.
>
> Thanks,
> - Kever
>

Yes I think so.

But first I'd like to understand why we need to use of-platdata on
this very modern SoC. Can you tell me the maximum SPL size you can
support on this SoC? I thought you had removed the 30KB limit?

Using of-platdata only saves 3-4KB.

Regards,
Simon