From: Brad Griffis bgriffis@ti.com
for suspend/resume robustness
update value for ext_phy_ctrl_36 for suspend/resume robustness with hardware leveling enabled.
Match recommended values from EMIF Tools app note:
http://www.ti.com/lit/an/sprac70/sprac70.pdf
Signed-off-by: Brad Griffis bgriffis@ti.com Signed-off-by: Keerthy j-keerthy@ti.com --- arch/arm/mach-omap2/am33xx/ddr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/am33xx/ddr.c b/arch/arm/mach-omap2/am33xx/ddr.c index e6e6ef8e9a..13fac2d3cd 100644 --- a/arch/arm/mach-omap2/am33xx/ddr.c +++ b/arch/arm/mach-omap2/am33xx/ddr.c @@ -307,8 +307,8 @@ static void ext_phy_settings_hwlvl(const struct emif_regs *regs, int nr) writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_34_shdw); writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_35); writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_35_shdw); - writel(0x000000FF, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36); - writel(0x000000FF, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36_shdw); + writel(0x00000077, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36); + writel(0x00000077, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36_shdw);
/* * Sequence to ensure that the PHY is again in a known state after