1 files changed, 260 insertions, 0 deletions
diff --git a/board/phytec/phycore_am335x_r2/board.c b/board/phytec/phycore_am335x_r2/board.c
new file mode 100644
index 0000000..02d6c27
--- /dev/null
+++ b/board/phytec/phycore_am335x_r2/board.c
@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * board.c
+ *
+ * Board functions for Phytec phyCORE-AM335x R2 (PCL060 / PCM060) based boards
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ * Copyright (C) 2013 Lars Poeschel, Lemonage Software GmbH
+ * Copyright (C) 2015 Wadim Egorov, PHYTEC Messtechnik GmbH
+ * Copyright (C) 2019 DENX Software Engineering GmbH
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/ddr_defs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <power/tps65910.h>
+#include <jffs2/load_kernel.h>
+#include <mtd_node.h>
+#include <fdt_support.h>
+#include "board.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SPL_BUILD
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+/* DDR RAM defines */
+#define DDR_CLK_MHZ		400 /* DDR_DPLL_MULT value */
+
+#define OSC	(V_OSCK / 1000000)
+const struct dpll_params dpll_ddr = {
+		DDR_CLK_MHZ, OSC - 1, 1, -1, -1, -1, -1};
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+	return &dpll_ddr;
+}
+
+const struct ctrl_ioregs ioregs = {
+	.cm0ioctl		= 0x18B,
+	.cm1ioctl		= 0x18B,
+	.cm2ioctl		= 0x18B,
+	.dt0ioctl		= 0x18B,
+	.dt1ioctl		= 0x18B,
+};
+
+static const struct cmd_control ddr3_cmd_ctrl_data = {
+	.cmd0csratio = 0x80,
+	.cmd0iclkout = 0x0,
+
+	.cmd1csratio = 0x80,
+	.cmd1iclkout = 0x0,
+
+	.cmd2csratio = 0x80,
+	.cmd2iclkout = 0x0,
+};
+
+enum {
+	PHYCORE_R2_MT41K128M16JT_256MB,
+	PHYCORE_R2_MT41K256M16TW107IT_512MB,
+	PHYCORE_R2_MT41K512M16HA125IT_1024MB,
+};
+
+struct am335x_sdram_timings {
+	struct emif_regs ddr3_emif_reg_data;
+	struct ddr_data ddr3_data;
+};
+
+static struct am335x_sdram_timings physom_timings[] = {
+	[PHYCORE_R2_MT41K128M16JT_256MB] = {
+		.ddr3_emif_reg_data = {
+			.sdram_config = 0x61C052B2,
+			.ref_ctrl = 0x00000C30,
+			.sdram_tim1 = 0x0AAAD4DB,
+			.sdram_tim2 = 0x26437FDA,
+			.sdram_tim3 = 0x501F83FF,
+			.zq_config = 0x50074BE4,
+			.emif_ddr_phy_ctlr_1 = 0x7,
+			.ocp_config = 0x003d3d3d,
+		},
+		.ddr3_data = {
+			.datardsratio0 = 0x36,
+			.datawdsratio0 = 0x38,
+			.datafwsratio0 = 0x99,
+			.datawrsratio0 = 0x73,
+		},
+	},
+	[PHYCORE_R2_MT41K256M16TW107IT_512MB] = {
+		.ddr3_emif_reg_data = {
+			.sdram_config = 0x61C05332,
+			.ref_ctrl = 0x00000C30,
+			.sdram_tim1 = 0x0AAAD4DB,
+			.sdram_tim2 = 0x266B7FDA,
+			.sdram_tim3 = 0x501F867F,
+			.zq_config = 0x50074BE4,
+			.emif_ddr_phy_ctlr_1 = 0x7,
+			.ocp_config = 0x003d3d3d,
+		},
+		.ddr3_data = {
+			.datardsratio0 = 0x37,
+			.datawdsratio0 = 0x38,
+			.datafwsratio0 = 0x92,
+			.datawrsratio0 = 0x72,
+		},
+	},
+	[PHYCORE_R2_MT41K512M16HA125IT_1024MB] = {
+		.ddr3_emif_reg_data = {
+			.sdram_config = 0x61C053B2,
+			.ref_ctrl = 0x00000C30,
+			.sdram_tim1 = 0x0AAAD4DB,
+			.sdram_tim2 = 0x268F7FDA,
+			.sdram_tim3 = 0x501F88BF,
+			.zq_config = 0x50074BE4,
+			.emif_ddr_phy_ctlr_1 = 0x7,
+			.ocp_config = 0x003d3d3d,
+		},
+		.ddr3_data = {
+			.datardsratio0 = 0x38,
+			.datawdsratio0 = 0x4d,
+			.datafwsratio0 = 0x9d,
+			.datawrsratio0 = 0x82,
+		},
+	},
+};
+
+void sdram_init(void)
+{
+	/* Configure memory to maximum supported size for detection */
+	int ram_type_index = PHYCORE_R2_MT41K512M16HA125IT_1024MB;
+
+	config_ddr(DDR_CLK_MHZ, &ioregs,
+		   &physom_timings[ram_type_index].ddr3_data,
+		   &ddr3_cmd_ctrl_data,
+		   &physom_timings[ram_type_index].ddr3_emif_reg_data,
+		   0);
+
+	/* Detect memory physically present */
+	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_MAX_RAM_BANK_SIZE);
+
+	/* Reconfigure memory for actual detected size */
+	switch (gd->ram_size) {
+	case SZ_1G:
+		ram_type_index = PHYCORE_R2_MT41K512M16HA125IT_1024MB;
+		break;
+	case SZ_512M:
+		ram_type_index = PHYCORE_R2_MT41K256M16TW107IT_512MB;
+		break;
+	case SZ_256M:
+	default:
+		ram_type_index = PHYCORE_R2_MT41K128M16JT_256MB;
+		break;
+	}
+	config_ddr(DDR_CLK_MHZ, &ioregs,
+		   &physom_timings[ram_type_index].ddr3_data,
+		   &ddr3_cmd_ctrl_data,
+		   &physom_timings[ram_type_index].ddr3_emif_reg_data,
+		   0);
+}
+
+const struct dpll_params *get_dpll_mpu_params(void)
+{
+	int ind = get_sys_clk_index();
+	int freq = am335x_get_efuse_mpu_max_freq(cdev);
+
+	switch (freq) {
+	case MPUPLL_M_1000:
+		return &dpll_mpu_opp[ind][5];
+	case MPUPLL_M_800:
+		return &dpll_mpu_opp[ind][4];
+	case MPUPLL_M_720:
+		return &dpll_mpu_opp[ind][3];
+	case MPUPLL_M_600:
+		return &dpll_mpu_opp[ind][2];
+	case MPUPLL_M_500:
+		return &dpll_mpu_opp100;
+	case MPUPLL_M_300:
+		return &dpll_mpu_opp[ind][0];
+	}
+
+	return &dpll_mpu_opp[ind][0];
+}
+
+static void scale_vcores_generic(int freq)
+{
+	int sil_rev, mpu_vdd;
+
+	/*
+	 * We use a TPS65910 PMIC. For all  MPU frequencies we support we use a
+	 * CORE voltage of 1.10V. For MPU voltage we need to switch based on
+	 * the frequency we are running at.
+	 */
+	if (power_tps65910_init(0))
+		return;
+
+	/*
+	 * Depending on MPU clock and PG we will need a different
+	 * VDD to drive at that speed.
+	 */
+	sil_rev = readl(&cdev->deviceid) >> 28;
+	mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev, freq);
+
+	/* Tell the TPS65910 to use i2c */
+	tps65910_set_i2c_control();
+
+	/* First update MPU voltage. */
+	if (tps65910_voltage_update(MPU, mpu_vdd))
+		return;
+
+	/* Second, update the CORE voltage. */
+	if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_0))
+		return;
+}
+
+void scale_vcores(void)
+{
+	int freq;
+
+	freq = am335x_get_efuse_mpu_max_freq(cdev);
+	scale_vcores_generic(freq);
+}
+
+void set_uart_mux_conf(void)
+{
+	enable_uart0_pin_mux();
+}
+
+void set_mux_conf_regs(void)
+{
+	enable_i2c0_pin_mux();
+	enable_board_pin_mux();
+}
+#endif
+
+/*
+ * Basic board specific setup.  Pinmux has been handled already.
+ */
+int board_init(void)
+{
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+	return 0;
+}
+
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, bd_t *bd)
+{
+#ifdef CONFIG_FDT_FIXUP_PARTITIONS
+	static const struct node_info nodes[] = {
+		{ "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
+	};
+
+	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
+#endif
+	return 0;
+}
+#endif