[U-Boot] [PATCH 1/9] dm: allow 4GB of DRAM on 32bit systems

[Rask Ingemann Lambertsen]

On 03-09-2018 at 19:59 +0530, Lokesh Vutla wrote:
> 
> On Sunday 02 September 2018 11:19 PM, Alexander Graf wrote:
> > 
> >> Am 02.09.2018 um 18:04 schrieb Vagrant Cascadian <vagrant at debian.org>:
> >>
> >>> With LPAE available in all modern ARM cores, shouldn't phys_addr_t just
> >>> be u64? And then we'd probably want to use that throughout the code, right?
> >>
> >> Quite a few currently supported boards do not support LPAE, e.g. imx6.
> > 
> > What I'm trying to say is that we probably want to make phys_addr_t be u64 when CONFIG_LPAE is set.
> 
> That's right. Enabling PHYS_64BIT should be sufficient. Based on this
> phys_addr_t should be set to u32 or u64. arm already does that[1].

That will cause warnings from at least two sunxi drivers. I forgot which one
the other was, but sunxi_mmc is one of them:

$ git grep -F -e '(u32 *)' drivers/mmc/sunxi_mmc.c
drivers/mmc/sunxi_mmc.c:	ccu_reg = (u32 *)ofnode_get_addr(args.node);
drivers/mmc/sunxi_mmc.c:		mmc_config_clk = (u32 *)ofnode_get_addr(args.node);

becase ofnode_get_addr() is declared like so:

include/dm/ofnode.h:phys_addr_t ofnode_get_addr(ofnode node);

-- 
Best regards,
Rask Ingemann Lambertsen