From 3625fd64ef929af4d158027aa5beee703f1294fc Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Mon, 18 May 2015 07:07:02 -0700 Subject: [PATCH] arm: mx6: ddr: set fast-exit on DDR3 if pd_fast_exit specified Commit fa8b7d66f49f0c7bd41467fe78f6488d8af6976a introduced fast-exit support to the MMDC however enabling it on the DDR3 got missed. Make sure we enable it on the DDR3 as well. Gateworks uses Micron memory as well as Winbond in MX6. We have found in testing that we need to enable fast-exit for Winbond stability. Gateworks boards are currently the only boards using the MX6 SPL and enabling fast-exit mode. Signed-off-by: Tim Harvey --- arch/arm/cpu/armv7/mx6/ddr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c index 5d5bd0f546..86c8354217 100644 --- a/arch/arm/cpu/armv7/mx6/ddr.c +++ b/arch/arm/cpu/armv7/mx6/ddr.c @@ -521,7 +521,8 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo, /* MR0 */ val = ((tcl - 1) << 4) | /* CAS */ (1 << 8) | /* DLL Reset */ - ((twr - 3) << 9); /* Write Recovery */ + ((twr - 3) << 9) | /* Write Recovery */ + (sysinfo->pd_fast_exit << 12); /* Precharge PD PLL on */ debug("MR0 CS%d: 0x%08x\n", cs, (u32)MR(val, 0, 3, cs)); mmdc0->mdscr = MR(val, 0, 3, cs); /* ZQ calibration */