1 files changed, 106 insertions, 0 deletions
diff --git a/board/compulab/cm_t335/spl.c b/board/compulab/cm_t335/spl.c
new file mode 100644
index 00000000000..99f3a869bbc
--- /dev/null
+++ b/board/compulab/cm_t335/spl.c
@@ -0,0 +1,106 @@
+/*
+ * SPL specific code for Compulab CM-T335 board
+ *
+ * Board functions for Compulab CM-T335 board
+ *
+ * Copyright (C) 2013, Compulab Ltd - http://compulab.co.il/
+ *
+ * Author: Ilya Ledvich <ilya@compulab.co.il>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+
+#include <asm/arch/ddr_defs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clocks_am33xx.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware_am33xx.h>
+#include <asm/sizes.h>
+
+static const struct ddr_data ddr3_data = {
+	.datardsratio0		= MT41J128MJT125_RD_DQS,
+	.datawdsratio0		= MT41J128MJT125_WR_DQS,
+	.datafwsratio0		= MT41J128MJT125_PHY_FIFO_WE,
+	.datawrsratio0		= MT41J128MJT125_PHY_WR_DATA,
+};
+
+static const struct cmd_control ddr3_cmd_ctrl_data = {
+	.cmd0csratio		= MT41J128MJT125_RATIO,
+	.cmd0iclkout		= MT41J128MJT125_INVERT_CLKOUT,
+
+	.cmd1csratio		= MT41J128MJT125_RATIO,
+	.cmd1iclkout		= MT41J128MJT125_INVERT_CLKOUT,
+
+	.cmd2csratio		= MT41J128MJT125_RATIO,
+	.cmd2iclkout		= MT41J128MJT125_INVERT_CLKOUT,
+};
+
+static struct emif_regs ddr3_emif_reg_data = {
+	.sdram_config		= MT41J128MJT125_EMIF_SDCFG,
+	.ref_ctrl		= MT41J128MJT125_EMIF_SDREF,
+	.sdram_tim1		= MT41J128MJT125_EMIF_TIM1,
+	.sdram_tim2		= MT41J128MJT125_EMIF_TIM2,
+	.sdram_tim3		= MT41J128MJT125_EMIF_TIM3,
+	.zq_config		= MT41J128MJT125_ZQ_CFG,
+	.emif_ddr_phy_ctlr_1	= MT41J128MJT125_EMIF_READ_LATENCY |
+					PHY_EN_DYN_PWRDN,
+};
+
+const struct dpll_params dpll_ddr = {
+/*       M           N            M2  M3  M4  M5  M6 */
+	303, (V_OSCK/1000000) - 1, 1, -1, -1, -1, -1};
+
+void am33xx_spl_board_init(void)
+{
+	struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+	/* Get the frequency */
+	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
+
+	/* Set CORE Frequencies to OPP100 */
+	do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
+
+	/* Set MPU Frequency to what we detected now that voltages are set */
+	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
+}
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+	return &dpll_ddr;
+}
+
+static void probe_sdram_size(long size)
+{
+	switch (size) {
+	case SZ_512M:
+		ddr3_emif_reg_data.sdram_config = MT41J256MJT125_EMIF_SDCFG;
+		break;
+	case SZ_256M:
+		ddr3_emif_reg_data.sdram_config = MT41J128MJT125_EMIF_SDCFG;
+		break;
+	case SZ_128M:
+		ddr3_emif_reg_data.sdram_config = MT41J64MJT125_EMIF_SDCFG;
+		break;
+	default:
+		puts("Failed configuring DRAM, resetting...\n\n");
+		reset_cpu(0);
+	}
+	debug("%s: setting DRAM size to %ldM\n", __func__, size >> 20);
+	config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
+		   &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
+}
+
+void sdram_init(void)
+{
+	long size = SZ_1G;
+
+	do {
+		size = size / 2;
+		probe_sdram_size(size);
+	} while (get_ram_size((void *)CONFIG_SYS_SDRAM_BASE, size) < size);
+
+	return;
+}