Re: [PATCHv3 5/6] ARM: imx: Add initial support for Freescale LS1021A

[Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>]

On Tuesday 09 September 2014 17:12:31 Jingchang Lu wrote:
> +#include "common.h"
> +
> +static void __init ls1021a_init_machine(void)
> +{
> +       mxc_arch_reset_init_dt();
> +       of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
> +}
> +
> +static const char *ls1021a_dt_compat[] __initdata = {
> +       "fsl,ls1021a",
> +       NULL,
> +};

Please don't add any new users of mxc_arch_reset_init_dt(). We now
have infrastructure to register a system-reset handler from the
watchdog driver, so please do that instead, and clean up the
existing users as well.

> +DT_MACHINE_START(LS1021A, "Freescale LS1021A")
> +#ifdef CONFIG_ZONE_DMA
> +       .dma_zone_size  = SZ_128M,
> +#endif
> +       .init_machine   = ls1021a_init_machine,
> +       .dt_compat      = ls1021a_dt_compat,
> +       .restart        = mxc_restart,
> +MACHINE_END

I believe someone recently posted a patch to derive the dma_zone_size
from device tree. Can yo try to find that and see if that will work
for you?

Can you explain what the reason is for needing a DMA zone?

	Arnd
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