[U-Boot] [U-Boot, v1, 3/3] ARM: omap: merge GPMC initialization code for all platform

Gupta, Pekon pekon at ti.com
Tue May 27 06:47:11 CEST 2014


>From: Tom Rini [mailto:tom.rini at gmail.com] On Behalf Of Rini, Tom
>On Thu, May 08, 2014 at 09:43:47PM +0530, pekon gupta wrote:
>
>> GPMC controller on TI's OMAP SoC is general purpose controller to interface
>> with different types of external devices like;
>>  - parallel NOR flash
>>  - parallel NAND flash
>>  - OneNand flash
>>  - SDR RAM
>>  - Ethernet Devices like LAN9220
>>
>> Though GPMC configurations may be different for each platform depending on
>> clock-frequency and external device interfacing with controller. But
>> initialization sequence remains common across all platfoms.
>>
>> Thus this patch merges gpmc_init() scattered in different arch-xx/mem.c
>> files into single omap-common/mem-common.c
>>
>> However, actual platforms specific register config values are still sourced
>> from corresponding platform specific headers like;
>>  AM33xx: arch/arm/include/asm/arch-am33xx/mem.h
>>  OMAP3:  arch/arm/include/asm/arch-omap3/mem.h
>>  OMAP4:  arch/arm/include/asm/arch-omap4/mem.h
>>  OMAP4:  arch/arm/include/asm/arch-omap5/mem.h
>>
>> Also, CONFIG_xx passed by board-profile decide config for which set of macros
>> need to be used for initialization
>>  CONFIG_NAND:    initialize GPMC for NAND device
>>  CONFIG_NOR:     initialize GPMC for NOR device
>>  CONFIG_ONENAND: initialize GPMC for ONENAND device
>>
>> Signed-off-by: Pekon Gupta <pekon at ti.com>
>
>After adding GPMC_SIZE_256M to omap3/mem.h, applied to u-boot-ti/master,
>thanks!
>
>And note that git detect renames got a bit too agressive here so I had
>to apply it kinda by hand, but I think I did everything right.
>
Thanks much .. I'll review the changes.

with regards, pekon


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