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ARM: OMAP2+: sleep43xx: Run EMIF HW leveling on resume path 

When returning from DeepSleep mode on AM437x platforms the EMIF must run
DDR hardware leveling, same as done during u-boot, to properly restore the
EMIF PHY to it's operational state on platforms using DDR3.

Call the ti-emif-sram-pm run_hw_leveling routine to perform this. This
happens after all other EMIF values are restored so the exact same
configuration used at boot is used at the end of EMIF resume as well.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
hifive-unleashed-5.2
Dave Gerlach 2019-04-02 11:57:43 -05:00 committed by Tony Lindgren
parent 6c110561eb
commit 11140cc40d
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-omap2/sleep43xx.S
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@ -368,6 +368,9 @@ wait_emif_enable1:
mov r1, #AM43XX_EMIF_POWEROFF_DISABLE
str r1, [r2, #0x0]
ldr r1, [r9, #EMIF_PM_RUN_HW_LEVELING]
blx r1
#ifdef CONFIG_CACHE_L2X0
ldr r2, l2_cache_base
ldr r0, [r2, #L2X0_CTRL]