[U-Boot] [PATCH] efikamx: sync Smartbook DDR settings in DCD with those found in Genesi's production U-Boot

[Matt Sealey]

Oops. I picked the wrong commit id out of my local tree and there's a subtle mistake here.. It won't break anything but its not the one I wanted to submit. I'll respond this one..

-- 
Matt Sealey <matt at genesi-usa.com>
Product Development Analyst, Genesi USA, Inc.

On Aug 23, 2012, at 3:27 PM, Matt Sealey <matt at genesi-usa.com> wrote:

> We have no idea where the DCD was derived from for Smartbook support, but they
> differ from the Smarttop settings, MX51EVK settings and certainly don't
> correspond to any shipped or development version of U-Boot that Genesi has ever
> had on any Smartbook.
> 
> So, copy the calibrated, verified settings from the U-Boot as shipped with every
> Smartbook since retail production. Remove those few settings that just set the
> POR defaults which have already been confirmed for the previous Smarttop DCD
> change.
> 
> One of the lines is specific to i.MX51 TO3 designs and therefore TO2 Smartbooks
> will possibly not work so reliably with this new DCD; that said, TO2 Smartbooks
> basically don't exist at retail and the number of units in the world is less
> than 5 (3 of which are at the Genesi office or owned by Genesi employees).
> 
> Many hours of memory testing confirms the new settings are stable.
> 
> Signed-off-by: Matt Sealey <matt at genesi-usa.com>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Marek Vasut <marex at denx.de>
> ---
> board/genesi/mx51_efikamx/imximage_sb.cfg |   46 +++++++++++++----------------
> 1 file changed, 20 insertions(+), 26 deletions(-)
> 
> diff --git a/board/genesi/mx51_efikamx/imximage_sb.cfg b/board/genesi/mx51_efikamx/imximage_sb.cfg
> index 878146f..57ccad0 100644
> --- a/board/genesi/mx51_efikamx/imximage_sb.cfg
> +++ b/board/genesi/mx51_efikamx/imximage_sb.cfg
> @@ -1,5 +1,7 @@
> #
> +# Copyright (C) 2009 Pegatron Corporation
> # Copyright (C) 2010 Marek Vasut <marek.vasut at gmail.com>
> +# Copyright (C) 2009-2012 Genesi USA, Inc.
> #
> # BASED ON: imx51evk
> #
> @@ -43,30 +45,22 @@ BOOT_FROM    spi
> #    Address      absolute address of the register
> #    value      value to be stored in the register
> 
> -# Setting IOMUXC
> -DATA 4 0x73fa88a0 0x200
> -DATA 4 0x73fa850c 0x20c3
> -DATA 4 0x73fa8510 0x20c3
> -DATA 4 0x73fa883c 0x2
> -DATA 4 0x73fa8848 0x2
> -DATA 4 0x73fa84b8 0xe7
> -DATA 4 0x73fa84bc 0x45
> -DATA 4 0x73fa84c0 0x45
> -DATA 4 0x73fa84c4 0x45
> -DATA 4 0x73fa84c8 0x45
> -DATA 4 0x73fa8820 0x0
> -DATA 4 0x73fa84a4 0x5
> -DATA 4 0x73fa84a8 0x5
> -DATA 4 0x73fa84ac 0xe3
> -DATA 4 0x73fa84b0 0xe3
> -DATA 4 0x73fa84b4 0xe3
> -DATA 4 0x73fa84cc 0xe3
> -DATA 4 0x73fa84d0 0xe2
> -
> -DATA 4 0x73fa882c 0x4
> -DATA 4 0x73fa88a4 0x4
> -DATA 4 0x73fa88ac 0x4
> -DATA 4 0x73fa88b8 0x4
> +# DDR bus IOMUX PAD settings
> +DATA 4 0x73fa88a0 0x200        # GRP_INMODE1
> +DATA 4 0x73fa850c 0x20c5    # SDODT1
> +DATA 4 0x73fa8510 0x20c5    # SDODT0
> +DATA 4 0x73fa8848 0x4        # DDR_A1
> +DATA 4 0x73fa84b8 0xe7        # DRAM_SDCLK
> +DATA 4 0x73fa84bc 0x45        # DRAM_SDQS0
> +DATA 4 0x73fa84c0 0x45        # DRAM_SDQS1
> +DATA 4 0x73fa84c4 0x45        # DRAM_SDQS2
> +DATA 4 0x73fa84c8 0x45        # DRAM_SDQS3
> +DATA 4 0x73fa8820 0x0        # DDRPKS
> +DATA 4 0x73fa84ac 0xe5        # SDWE
> +DATA 4 0x73fa84b0 0xe5        # SDCKE0
> +DATA 4 0x73fa84b4 0xe5        # SDCKE1
> +DATA 4 0x73fa84cc 0xe5        # DRAM_CS0
> +DATA 4 0x73fa84d0 0xe4        # DRAM_CS1
> 
> # Setting DDR for micron
> # 13 Rows, 10 Cols, 32 bit, SREF=4 Micron Model
> @@ -108,7 +102,7 @@ DATA 4 0x83fd9014 0x00008014
> DATA 4 0x83fd9014 0x00008014
> DATA 4 0x83fd9014 0x0632801c
> DATA 4 0x83fd9014 0x0380801d
> -DATA 4 0x83fd9014 0x0040801d
> +DATA 4 0x83fd9014 0x0042801d
> DATA 4 0x83fd9014 0x00008004
> 
> # Write to CTL0
> @@ -116,7 +110,7 @@ DATA 4 0x83fd9000 0xb2a20000
> # Write to CTL1
> DATA 4 0x83fd9008 0xb2a20000
> # ESDMISC
> -DATA 4 0x83fd9010 0xcaaaf6d0
> +DATA 4 0x83fd9010 0x000ad6d0
> #ESDCTL_ESDCDLYGD
> DATA 4 0x83fd9034 0x90000000
> DATA 4 0x83fd9014 0x00000000
> -- 
> 1.7.9.5
>