am33xx: add dmm support to emif4 library

Adds a config_dmm() routine to support TI814X DMM configuration.
Signed-off-by: NMatt Porter <mporter@ti.com>
Reviewed-by: NTom Rini <trini@ti.com>

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,

arch/arm/include/asm/arch-am33xx/ddr_defs.h

@@ -100,6 +100,11 @@
 #define MT41J512M8RH125_PHY_WR_DATA		0x74
 #define MT41J512M8RH125_IOCTRL_VALUE		0x18B
 
+/**
+ * Configure DMM
+ */
+void config_dmm(const struct dmm_lisa_map_regs *regs);
+
 /**
  * Configure SDRAM
  */