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Fabio Estevam 6924bc7ca2 imx8mm-cl-iot-gate: Retrieve the DDR type from EEPROM 
Currently, the DDR type is retrieved by iteracting inside an array
of possible DDR types.

This may take saveral attempts, which slows the overall U-Boot process
and does not provide a good user experience:

U-Boot SPL 2021.07 (Feb 28 2022 - 06:39:32 +0000)
DDRINFO: Cfg attempt: [ 1/6 ]
DDRINFO(M): mr5-8 [ 0xff000010 ]
DDRINFO(T): mr5-8 [ 0x5000010 ]
resetting ...

U-Boot SPL 2021.07 (Feb 28 2022 - 06:39:32 +0000)
DDRINFO: Cfg attempt: [ 2/6 ]
DDRINFO(M): mr5-8 [ 0xff000010 ]
DDRINFO(T): mr5-8 [ 0x1061010 ]
resetting ...

U-Boot SPL 2021.07 (Feb 28 2022 - 06:39:32 +0000)
DDRINFO: Cfg attempt: [ 3/6 ]
DDRINFO(M): mr5-8 [ 0xff000010 ]
DDRINFO(T): mr5-8 [ 0xff000010 ]
Normal Boot
WDT:   Not starting
Trying to boot from MMC2
NOTICE:  BL31: v2.5(release):v2.5
NOTICE:  BL31: Built : 07:12:44, Jan 24 2022

Improve the boot time by retrieving the correct DDR information from
the EEPROM:

U-Boot SPL 2022.04-rc4-00045-g6d02bc40d58c (Mar 19 2022 - 08:22:29 -0300)
DDRINFO(D): Kingston 4096G
DDRINFO(M): mr5-8 [ 0xff000010 ]
DDRINFO(E): mr5-8 [ 0xff000010 ]
Normal Boot
WDT:   Started watchdog@30280000 with servicing (60s timeout)
Trying to boot from MMC2
NOTICE:  BL31: v2.5(release):v2.5
NOTICE:  BL31: Built : 22:28:11, Mar 15 2022

Based on the original code from Compulab's U-Boot.

Tested on a imx8mm-cl-iot-gate board populated with 4GB of RAM.

Signed-off-by: Fabio Estevam <festevam@denx.de>
2022-04-12 19:10:44 +02:00
..
cl-som-imx7 Remove CONFIG_SYS_MMC_IMG_LOAD_PART from CONFIG namespace 2021-12-27 08:41:38 -05:00
cm_fx6 arm: Disable ATAGs support 2021-09-07 16:22:30 -04:00
cm_t43 WS cleanup: remove trailing empty lines 2021-09-30 08:08:56 -04:00
cm_t335 reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
common compulab: Clean up some unused symbols 2021-09-27 21:38:34 -04:00
imx8mm-cl-iot-gate imx8mm-cl-iot-gate: Retrieve the DDR type from EEPROM 2022-04-12 19:10:44 +02:00
trimslice SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00