diff options
| author | James Doublesin <doublesin@ti.com> | 2014-12-22 22:26:11 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2015-01-13 16:53:39 (GMT) |
| commit | fc46bae2ae38c8d0b1570427b5c9520281eaae4f (patch) | |
| tree | c2536bc12569eb79405935eaabb2737dfc4e8aac /arch/arm/cpu/armv7/am33xx/emif4.c | |
| parent | e2a6207bcc45d9d8f3c2da75d581f3efb4d7e47f (diff) | |
| download | u-boot-fsl-qoriq-fc46bae2ae38c8d0b1570427b5c9520281eaae4f.tar.xz | |
arm: am437x: Enable hardware leveling for EMIF
Switch to using hardware leveling for certain parameters on the EMIF
rather than using precalculated values. Doing this also means we have a
common place now between am437x and am335x for setting
emif_sdram_ref_ctrl with a value for the correct delay length.
Tested-by: Felipe Balbi <balbi@ti.com>
Tested-by: Tom Rini <trini@ti.com>
Signed-off-by: James Doublesin <doublesin@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/emif4.c')
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/emif4.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c index 8b7527c..9cf816c 100644 --- a/arch/arm/cpu/armv7/am33xx/emif4.c +++ b/arch/arm/cpu/armv7/am33xx/emif4.c @@ -112,17 +112,20 @@ void config_ddr(unsigned int pll, const struct ctrl_ioregs *ioregs, /* Set CKE to be controlled by EMIF/DDR PHY */ writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl); + #endif #ifdef CONFIG_AM43XX writel(readl(&cm_device->cm_dll_ctrl) & ~0x1, &cm_device->cm_dll_ctrl); while ((readl(&cm_device->cm_dll_ctrl) & CM_DLL_READYST) == 0) ; - writel(0x80000000, &ddrctrl->ddrioctrl); config_io_ctrl(ioregs); /* Set CKE to be controlled by EMIF/DDR PHY */ writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl); + + /* Allow EMIF to control DDR_RESET */ + writel(0x00000000, &ddrctrl->ddrioctrl); #endif /* Program EMIF instance */ |