[PATCH 3/6] i.MX7D: DCD: Create shared DDR configuration header

Sascha Hauer s.hauer at pengutronix.de
Thu Sep 27 00:05:51 PDT 2018


On Tue, Sep 25, 2018 at 06:34:15PM -0700, Andrey Smirnov wrote:
> Create a shared DDR configuration header based on configuration used
> by i.MX7D SabreSD board.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
> ---
>  .../flash-header-mx7-sabresd.imxcfg           | 79 +------------------
>  .../flash-header/imx7d-ddr-default.imxcfg     | 78 ++++++++++++++++++
>  2 files changed, 79 insertions(+), 78 deletions(-)
>  create mode 100644 arch/arm/mach-imx/include/mach/flash-header/imx7d-ddr-default.imxcfg
> 
> diff --git a/arch/arm/mach-imx/include/mach/flash-header/imx7d-ddr-default.imxcfg b/arch/arm/mach-imx/include/mach/flash-header/imx7d-ddr-default.imxcfg
> new file mode 100644
> index 000000000..e98f055ee
> --- /dev/null
> +++ b/arch/arm/mach-imx/include/mach/flash-header/imx7d-ddr-default.imxcfg
> @@ -0,0 +1,78 @@
> +/*
> + * Copyright (C) 2016 NXP Semiconductors
> + *
> + * SPDX-License-Identifier:	GPL-2.0
> + *
> + * Refer docs/README.imxmage for more details about how-to configure
> + * and create imximage boot image
> + *
> + * The syntax is taken as close as possible with the kwbimage
> + *
> + * Taken from upstream U-Boot git://git.denx.de/u-boot.git, commit
> + * 1a8150d4b16fbafa6f1d207ddb85eda7dc399e2d
> + */
> +
> +#include <mach/imx7-ddr-regs.h>
> +
> +wm 32 0x30340004 0x4F400005
> +
> +wm 32 0x30391000 0x00000002
> +
> +wm 32 MX7_DDRC_MSTR 0x01040001

How default is this default header? It looks like it only works for the
exact DDR type and size like used on the i.MX7D SabreSD board. Many boards
are more or less copied from the eval boards, so having a common DDR
setup header is a good thing, but calling this "default" sounds a bit
strong. How about replacing "default" with "sabresd"?

Sascha

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