Home
last modified time | relevance | path

Searched hist:"802 bb57a584db2202a47d41ac730fe76ddeb4f33" (Results 1 – 1 of 1) sorted by relevance

/rk3399_rockchip-uboot/arch/arm/include/asm/
H A Demif.h802bb57a584db2202a47d41ac730fe76ddeb4f33 Mon Feb 16 04:45:56 UTC 2015 Lokesh Vutla <lokeshvutla@ti.com> ARM: DRA7: EMIF: Update SDRAM_REF_CTRL register value

The value in SDRAM_REF_CTRL controls the delay time between
the initial rising edge of DDR_RESETn to rising edge of DDR_CKE
(JEDEC specs this as 500us). In order to achieve this, SDRAM_REF_CTRL
should be written with a value corresponding to 500us delay before
starting DDR initialization sequence, and configure proper
value at the end of sequence.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>