diff mbox series

[U-Boot,5/6] arm: mach-omap2: am33xx: ddr: update value for ext_phy_ctrl_36

Message ID 20190412063820.25924-6-j-keerthy@ti.com
State Changes Requested
Delegated to: Tom Rini
Headers show
Series board: ti: am43xx: Enable hardware leveling | expand

Commit Message

J, KEERTHY April 12, 2019, 6:38 a.m. UTC 
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 mbox series

Patch

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