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[U-Boot,06/10] am33xx: add dmm support to emif4 library

Message ID 1360766644-9901-7-git-send-email-mporter@ti.com
State Deferred
Delegated to: Tom Rini
Headers show

Commit Message

Matt Porter Feb. 13, 2013, 2:44 p.m. UTC 
Adds a config_dmm() routine to support TI814X DMM configuration.

Signed-off-by: Matt Porter <mporter@ti.com>
---
 arch/arm/cpu/armv7/am33xx/emif4.c           |   17 +++++++++++++++++
 arch/arm/include/asm/arch-am33xx/ddr_defs.h |    5 +++++
 2 files changed, 22 insertions(+)

Comments

Tom Rini Feb. 15, 2013, 4:38 p.m. UTC | #1 
On Wed, Feb 13, 2013 at 09:44:00AM -0500, Matt Porter wrote:

> 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>
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Patch

diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index 0c617fa..27547be 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -44,11 +44,28 @@  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};
 static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
 
+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 8bf25a0..943b4ce 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -66,6 +66,11 @@ 
 #define MT41J128MJT125_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);