[U-Boot] [PATCH 1/4] arm/km: fix memory settings

[Prafulla Wadaskar]

> -----Original Message-----
> From: Holger Brunck [mailto:holger.brunck at keymile.com]
> Sent: 02 November 2012 15:45
> To: u-boot at lists.denx.de
> Cc: Holger Brunck; Valentin Longchamp; Prafulla Wadaskar
> Subject: [PATCH 1/4] arm/km: fix memory settings
> 
> On kmcoge5un we faced some serious problems with the memory during
> temperature tests. Reason was that we overwrite some registers for
> memory settings which have to leave untouched. These where registers
> 0x20148 , 0x2014c and 0x20154.
> So writing these registers is prohibited and this patch removes them
> from all km related config files. Even if the problem was only
> seen on kmcoge5un.
> 
> Signed-off-by: Holger Brunck <holger.brunck at keymile.com>
> Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
> cc: Prafulla Wadaskar <prafulla at marvell.com>
> ---
>  board/keymile/km_arm/kwbimage-memphis.cfg  |    6 +++---
>  board/keymile/km_arm/kwbimage.cfg          |    6 +++---
>  board/keymile/km_arm/kwbimage_128M16_1.cfg |   25 ++-----------------
> ------
>  board/keymile/km_arm/kwbimage_256M8_1.cfg  |   25 ++-----------------
> ------
>  4 files changed, 10 insertions(+), 52 deletions(-)
> 
> diff --git a/board/keymile/km_arm/kwbimage-memphis.cfg
> b/board/keymile/km_arm/kwbimage-memphis.cfg
> index 6df2ad7..5aa0de2 100644
> --- a/board/keymile/km_arm/kwbimage-memphis.cfg
> +++ b/board/keymile/km_arm/kwbimage-memphis.cfg
> @@ -55,9 +55,9 @@ DATA 0xFFD10008 0x00001100	# MPP Control 2
> Register
>  DATA 0xFFD100E0 0x1B1B1B1B	# IO Configuration 0 Register
>  DATA 0xFFD20134 0x66666666	# L2 RAM Timing 0 Register
>  DATA 0xFFD20138 0x66666666	# L2 RAM Timing 1 Register
> -DATA 0xFFD20154 0x00000200	# CPU RAM Management Control3 Register
> -DATA 0xFFD2014C 0x00001C00	# CPU RAM Management Control1 Register
> -DATA 0xFFD20148 0x00000001	# CPU RAM Management Control0 Register
> +
> +# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them
> untouched!
> +# If not it could cause KW Exceptions during boot in Fast
> Corners/High Voltage
> 
>  #Dram initalization
>  DATA 0xFFD01400 0x430004E0	# SDRAM Configuration Register
> diff --git a/board/keymile/km_arm/kwbimage.cfg
> b/board/keymile/km_arm/kwbimage.cfg
> index b2f5193..e5e9942 100644
> --- a/board/keymile/km_arm/kwbimage.cfg
> +++ b/board/keymile/km_arm/kwbimage.cfg
> @@ -52,9 +52,9 @@ DATA 0xFFD10008 0x00001100	# MPP Control 2
> Register
>  DATA 0xFFD100E0 0x1B1B1B1B	# IO Configuration 0 Register
>  DATA 0xFFD20134 0x66666666	# L2 RAM Timing 0 Register
>  DATA 0xFFD20138 0x66666666	# L2 RAM Timing 1 Register
> -DATA 0xFFD20154 0x00000200	# CPU RAM Management Control3 Register
> -DATA 0xFFD2014C 0x00001C00	# CPU RAM Management Control1 Register
> -DATA 0xFFD20148 0x00000001	# CPU RAM Management Control0 Register
> +
> +# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them
> untouched!
> +# If not it could cause KW Exceptions during boot in Fast
> Corners/High Voltage
> 
>  #Dram initalization
>  DATA 0xFFD01400 0x43000400	# SDRAM Configuration Register
> diff --git a/board/keymile/km_arm/kwbimage_128M16_1.cfg
> b/board/keymile/km_arm/kwbimage_128M16_1.cfg
> index bcce907..5de8df7 100644
> --- a/board/keymile/km_arm/kwbimage_128M16_1.cfg
> +++ b/board/keymile/km_arm/kwbimage_128M16_1.cfg
> @@ -98,29 +98,8 @@ DATA 0xFFD20138 0x66666666	# L2 RAM Timing 1
> Register
>  # bit 19-18: 1, ECC RAM WTC RAM0
>  # bit 31-20: ???,Reserve
> 
> -DATA 0xFFD20154 0x00000200	# CPU RAM Management Control3 Register
> -# bit 23-0:  0x000200, Addr Config tuning
> -# bit 31-24: 0,        Reserved
> -
> -# ??? Missing register # CPU RAM Management Control2 Register
> -
> -DATA 0xFFD2014C 0x00001C00	# CPU RAM Management Control1 Register
> -# bit 15-0:  0x1C00, Opmux Tuning
> -# bit 31-16: 0,      Pc Dp Tuning
> -
> -DATA 0xFFD20148 0x00000001	# CPU RAM Management Control0 Register
> -# bit 1-0:   1, addr clk tune
> -# bit 3-2:   0, reserved
> -# bit 5-4:   0, dtcmp clk tune
> -# bit 7-6:   0, reserved
> -# bit 9-8:   0, macdrv clk tune
> -# bit 11-10: 0, opmuxgm2 clk tune
> -# bit 15-14: 0, rf clk tune
> -# bit 17-16: 0, rfbypass clk tune
> -# bit 19-18: 0, pc dp clk tune
> -# bit 23-20: 0, icache clk tune
> -# bit 27:24: 0, dcache clk tune
> -# bit 31:28: 0, regfile tunin
> +# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them
> untouched!
> +# If not it could cause KW Exceptions during boot in Fast
> Corners/High Voltage
> 
>  # SDRAM initalization
>  DATA 0xFFD01400 0x430004E0	# SDRAM Configuration Register
> diff --git a/board/keymile/km_arm/kwbimage_256M8_1.cfg
> b/board/keymile/km_arm/kwbimage_256M8_1.cfg
> index 3e1237b..d0a09f6 100644
> --- a/board/keymile/km_arm/kwbimage_256M8_1.cfg
> +++ b/board/keymile/km_arm/kwbimage_256M8_1.cfg
> @@ -100,29 +100,8 @@ DATA 0xFFD20138 0x66666666	# L2 RAM Timing 1
> Register
>  # bit 19-18: 1, ECC RAM WTC RAM0
>  # bit 31-20: ?,Reserved
> 
> -DATA 0xFFD20154 0x00000200	# CPU RAM Management Control3 Register
> -# bit 23-0:  0x000200, Addr Config tuning
> -# bit 31-24: 0,        Reserved
> -
> -# ??? Missing register # CPU RAM Management Control2 Register
> -
> -DATA 0xFFD2014C 0x00001C00	# CPU RAM Management Control1 Register
> -# bit 15-0:  0x1C00, Opmux Tuning
> -# bit 31-16: 0,      Pc Dp Tuning
> -
> -DATA 0xFFD20148 0x00000001	# CPU RAM Management Control0 Register
> -# bit 1-0:   1, addr clk tune
> -# bit 3-2:   0, reserved
> -# bit 5-4:   0, dtcmp clk tune
> -# bit 7-6:   0, reserved
> -# bit 9-8:   0, macdrv clk tune
> -# bit 11-10: 0, opmuxgm2 clk tune
> -# bit 15-14: 0, rf clk tune
> -# bit 17-16: 0, rfbypass clk tune
> -# bit 19-18: 0, pc dp clk tune
> -# bit 23-20: 0, icache clk tune
> -# bit 27:24: 0, dcache clk tune
> -# bit 31:28: 0, regfile tunin
> +# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them
> untouched!
> +# If not it could cause KW Exceptions during boot in Fast
> Corners/High Voltage
> 
>  # SDRAM initalization
>  DATA 0xFFD01400 0x430004E0	# SDRAM Configuration Register
> --
> 1.7.1

Applied to u-boot-marvell.git master branch

Regards...
Prafulla . . .