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54a97d2849
u-boot/board/ti/dra7xx
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pekon gupta 54a97d2849 board/ti/dra7xx: add support for parallel NAND 
This patch adds support for x16 NAND device (MT29F2G16AAD) connected to GPMC
chip-select[0] on DRA7xx EVM.
As GPMC pins are shared by multiple devices, so in addition to this patch
following board settings are required for NAND device detection [1]:

  SW5.9 (GPMC_WPN)   = OFF (logic-1)
  SW5.1 (NAND_BOOTn) = ON  (logic-0) /* Active-low */
  SW5.2 (NOR_BOOTn)  = OFF (logic-1)
  SW5.3 (eMMC_BOOTn) = OFF (logic-1)
  SW5.4 (QSPI_BOOTn) = OFF (logic-1)

And also set appropriate SYSBOOT configurations
  SW2.1 (SYSBOOT[0]) = ON  (logic-1) /* selects NAND Boot */
  SW2.2 (SYSBOOT[1]) = OFF (logic-0) /* selects NAND Boot */
  SW2.3 (SYSBOOT[2]) = OFF (logic-0) /* selects NAND Boot */
  SW2.4 (SYSBOOT[3]) = OFF (logic-0) /* selects NAND Boot */
  SW2.5 (SYSBOOT[4]) = ON  (logic-1) /* selects NAND Boot */
  SW2.6 (SYSBOOT[5]) = ON  (logic-1) /* selects NAND Boot */
  SW2.7 (SYSBOOT[6]) = OFF (logic-0) /* reserved */
  SW2.8 (SYSBOOT[7]) = OFF (logic-0) /* reserved */

  SW3.1 (SYSBOOT[ 8])= ON  (logic-1) /* selects SYS_CLK1 speed */
  SW3.2 (SYSBOOT[ 9])= OFF (logic-0) /* selects SYS_CLK1 speed */
  SW3.3 (SYSBOOT[10])= ON  (logic-1) /* wait-pin monitoring = enabled */
  SW3.4 (SYSBOOT[11])= OFF (logic-0) /* device type: Addr/Data Muxed */
  SW3.5 (SYSBOOT[12])= ON  (logic-1) /* device type: Addr/Data Muxed */
  SW3.6 (SYSBOOT[13])= ON  (logic-1) /* device bus-width: 1(x16) */
  SW3.7 (SYSBOOT[14])= OFF (logic-0) /* reserved */
  SW3.8 (SYSBOOT[15])= ON  (logic-1) /* reserved */

Following changes are required in board.cfg to enable NAND on J6-EVM:
2014-08-25 10:48:12 -04:00
..
evm.c Merge branch 'u-boot-ti/master' into 'u-boot-arm/master' 2014-07-28 12:26:21 +02:00
Kconfig kconfig: add board Kconfig and defconfig files 2014-07-30 08:48:01 -04:00
MAINTAINERS Add board MAINTAINERS files 2014-07-30 08:48:06 -04:00
Makefile board: ti: convert makefiles to Kbuild style 2013-10-31 13:26:44 -04:00
mux_data.h board/ti/dra7xx: add support for parallel NAND 2014-08-25 10:48:12 -04:00
README mmc: Add 'mmc rst-function' sub-command 2014-04-02 13:02:58 +03:00

README 

Summary
=======

This document covers various features of the 'dra7xx_evm' build and some
related uses.

eMMC boot partition use
=======================

It is possible, depending on SYSBOOT configuration to boot from the eMMC
boot partitions using (name depending on documentation referenced)
Alternative Boot operation mode or Boot Sequence Option 1/2.  In this
example we load MLO and u-boot.img from the build into DDR and then use
'mmc bootbus' to set the required rate (see TRM) and 'mmc partconfig' to
set boot0 as the boot device.
U-Boot # setenv autoload no
U-Boot # usb start
U-Boot # dhcp
U-Boot # mmc dev 1 1
U-Boot # tftp ${loadaddr} dra7xx/MLO
U-Boot # mmc write ${loadaddr} 0 100
U-Boot # tftp ${loadaddr} dra7xx/u-boot.img
U-Boot # mmc write ${loadaddr} 300 400
U-Boot # mmc bootbus 1 2 0 2
U-Boot # mmc partconf 1 1 1 0
U-Boot # mmc rst-function 1 1