Patchwork [U-Boot,v4,6/9] am33xx: add dmm support to emif4 library

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Submitter Matt Porter
Date March 15, 2013, 8:07 p.m.
Message ID <1363378030-2054-7-git-send-email-mporter@ti.com>
Download mbox | patch
Permalink /patch/228164/
State Accepted
Delegated to: Tom Rini
Headers show

Comments

Matt Porter - March 15, 2013, 8:07 p.m.
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>

---
v4: no changes
v3: no changes
v2: no changes
---
 arch/arm/cpu/armv7/am33xx/emif4.c           |   17 +++++++++++++++++
 arch/arm/include/asm/arch-am33xx/ddr_defs.h |    5 +++++
 2 files changed, 22 insertions(+)

Patch

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 1cbadff..15ca4c1 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -100,6 +100,11 @@ 
 #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);