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authorMatt Porter <mporter@ti.com>2013-03-15 10:07:07 +0000
committerTom Rini <trini@ti.com>2013-03-24 12:49:11 -0400
commit4fab8d7bbd5784771594f3d8c38827e7306381c3 (patch)
treefd1cbc1257202787089ca0f5e9e0f4d8701852c2 /arch/arm
parent8b029f22a6618f9966d2840c5d962646fc0829d6 (diff)
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am33xx: add dmm support to emif4 library
Adds a config_dmm() routine to support TI814X DMM configuration. Signed-off-by: Matt Porter <mporter@ti.com> Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/cpu/armv7/am33xx/emif4.c17
-rw-r--r--arch/arm/include/asm/arch-am33xx/ddr_defs.h5
2 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index 76459d8..aa84e96 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -44,6 +44,8 @@ void dram_init_banksize(void)
#ifdef CONFIG_SPL_BUILD
+static struct dmm_lisa_map_regs *hw_lisa_map_regs =
+ (struct dmm_lisa_map_regs *)DMM_BASE;
static struct vtp_reg *vtpreg[2] = {
(struct vtp_reg *)VTP0_CTRL_ADDR,
(struct vtp_reg *)VTP1_CTRL_ADDR};
@@ -51,6 +53,21 @@ static struct vtp_reg *vtpreg[2] = {
static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
#endif
+void config_dmm(const struct dmm_lisa_map_regs *regs)
+{
+ enable_dmm_clocks();
+
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_3);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_2);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_1);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_0);
+
+ writel(regs->dmm_lisa_map_3, &hw_lisa_map_regs->dmm_lisa_map_3);
+ writel(regs->dmm_lisa_map_2, &hw_lisa_map_regs->dmm_lisa_map_2);
+ writel(regs->dmm_lisa_map_1, &hw_lisa_map_regs->dmm_lisa_map_1);
+ writel(regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0);
+}
+
static void config_vtp(int nr)
{
writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_ENABLE,
diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index 55c61e6..72156af 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -101,6 +101,11 @@
#define MT41J512M8RH125_IOCTRL_VALUE 0x18B
/**
+ * Configure DMM
+ */
+void config_dmm(const struct dmm_lisa_map_regs *regs);
+
+/**
* Configure SDRAM
*/
void config_sdram(const struct emif_regs *regs, int nr);