[U-Boot] [PATCH] board: ti: am571x: Add 666MHz support for AM571x IDK

[Lokesh Vutla]

From: Steve Kipisz <s-kipisz2 at ti.com>

AM571x supports DDR running at 666MHz. Right now it is
clocked at 532MHz which is lower than what is supported.
In order to have maximum performance on AM571-IDK,
switch DDR to 666MHz.

Signed-off-by: Steve Kipisz <s-kipisz2 at ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 arch/arm/include/asm/omap_common.h |  1 +
 board/ti/am57xx/board.c            | 35 +++++++++++++++++++++++++++++++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index d7e453e579..8b296c9685 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -596,6 +596,7 @@ extern struct prcm_regs const omap4_prcm;
 extern struct prcm_regs const dra7xx_prcm;
 extern struct dplls const **dplls_data;
 extern struct dplls dra7xx_dplls;
+extern struct dplls dra72x_dplls;
 extern struct vcores_data const **omap_vcores;
 extern const u32 sys_clk_array[8];
 extern struct omap_sys_ctrl_regs const **ctrl;
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index 7e7056cf71..3d15cb1dbf 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -223,11 +223,39 @@ static const u32 beagle_x15_emif2_ddr3_ext_phy_ctrl_const_regs[] = {
 	0x0
 };
 
+static const struct emif_regs am571x_emif1_ddr3_666mhz_emif_regs = {
+	.sdram_config_init		= 0x61863332,
+	.sdram_config			= 0x61863332,
+	.sdram_config2			= 0x08000000,
+	.ref_ctrl			= 0x0000514d,
+	.ref_ctrl_final			= 0x0000144a,
+	.sdram_tim1			= 0xd333887c,
+	.sdram_tim2			= 0x40b37fe3,
+	.sdram_tim3			= 0x409f8ada,
+	.read_idle_ctrl			= 0x00050000,
+	.zq_config			= 0x5007190b,
+	.temp_alert_config		= 0x00000000,
+	.emif_ddr_phy_ctlr_1_init	= 0x0024400f,
+	.emif_ddr_phy_ctlr_1		= 0x0e24400f,
+	.emif_ddr_ext_phy_ctrl_1	= 0x10040100,
+	.emif_ddr_ext_phy_ctrl_2	= 0x00910091,
+	.emif_ddr_ext_phy_ctrl_3	= 0x00950095,
+	.emif_ddr_ext_phy_ctrl_4	= 0x009b009b,
+	.emif_ddr_ext_phy_ctrl_5	= 0x009e009e,
+	.emif_rd_wr_lvl_rmp_win		= 0x00000000,
+	.emif_rd_wr_lvl_rmp_ctl		= 0x80000000,
+	.emif_rd_wr_lvl_ctl		= 0x00000000,
+	.emif_rd_wr_exec_thresh		= 0x00000305
+};
+
 void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 {
 	switch (emif_nr) {
 	case 1:
-		*regs = &beagle_x15_emif1_ddr3_532mhz_emif_regs;
+		if (board_is_am571x_idk())
+			*regs = &am571x_emif1_ddr3_666mhz_emif_regs;
+		else
+			*regs = &beagle_x15_emif1_ddr3_532mhz_emif_regs;
 		break;
 	case 2:
 		*regs = &beagle_x15_emif2_ddr3_532mhz_emif_regs;
@@ -513,7 +541,10 @@ void vcores_init(void)
 void hw_data_init(void)
 {
 	*prcm = &dra7xx_prcm;
-	*dplls_data = &dra7xx_dplls;
+	if (is_dra72x())
+		*dplls_data = &dra72x_dplls;
+	else
+		*dplls_data = &dra7xx_dplls;
 	*ctrl = &dra7xx_ctrl;
 }
 
-- 
2.13.0