1 /*
2 * emif4.c
3 *
4 * AM33XX emif4 configuration file
5 *
6 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
7 *
8 * SPDX-License-Identifier: GPL-2.0+
9 */
10
11 #include <common.h>
12 #include <asm/arch/cpu.h>
13 #include <asm/arch/ddr_defs.h>
14 #include <asm/arch/hardware.h>
15 #include <asm/arch/clock.h>
16 #include <asm/arch/sys_proto.h>
17 #include <asm/io.h>
18 #include <asm/emif.h>
19
20 static struct vtp_reg *vtpreg[2] = {
21 (struct vtp_reg *)VTP0_CTRL_ADDR,
22 (struct vtp_reg *)VTP1_CTRL_ADDR};
23 #ifdef CONFIG_AM33XX
24 static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
25 #endif
26 #ifdef CONFIG_AM43XX
27 static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
28 static struct cm_device_inst *cm_device =
29 (struct cm_device_inst *)CM_DEVICE_INST;
30 #endif
31
32 #ifdef CONFIG_TI814X
config_dmm(const struct dmm_lisa_map_regs * regs)33 void config_dmm(const struct dmm_lisa_map_regs *regs)
34 {
35 struct dmm_lisa_map_regs *hw_lisa_map_regs =
36 (struct dmm_lisa_map_regs *)DMM_BASE;
37
38 enable_dmm_clocks();
39
40 writel(0, &hw_lisa_map_regs->dmm_lisa_map_3);
41 writel(0, &hw_lisa_map_regs->dmm_lisa_map_2);
42 writel(0, &hw_lisa_map_regs->dmm_lisa_map_1);
43 writel(0, &hw_lisa_map_regs->dmm_lisa_map_0);
44
45 writel(regs->dmm_lisa_map_3, &hw_lisa_map_regs->dmm_lisa_map_3);
46 writel(regs->dmm_lisa_map_2, &hw_lisa_map_regs->dmm_lisa_map_2);
47 writel(regs->dmm_lisa_map_1, &hw_lisa_map_regs->dmm_lisa_map_1);
48 writel(regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0);
49 }
50 #endif
51
config_vtp(int nr)52 static void config_vtp(int nr)
53 {
54 writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_ENABLE,
55 &vtpreg[nr]->vtp0ctrlreg);
56 writel(readl(&vtpreg[nr]->vtp0ctrlreg) & (~VTP_CTRL_START_EN),
57 &vtpreg[nr]->vtp0ctrlreg);
58 writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_START_EN,
59 &vtpreg[nr]->vtp0ctrlreg);
60
61 /* Poll for READY */
62 while ((readl(&vtpreg[nr]->vtp0ctrlreg) & VTP_CTRL_READY) !=
63 VTP_CTRL_READY)
64 ;
65 }
66
ddr_pll_config(unsigned int ddrpll_m)67 void __weak ddr_pll_config(unsigned int ddrpll_m)
68 {
69 }
70
config_ddr(unsigned int pll,const struct ctrl_ioregs * ioregs,const struct ddr_data * data,const struct cmd_control * ctrl,const struct emif_regs * regs,int nr)71 void config_ddr(unsigned int pll, const struct ctrl_ioregs *ioregs,
72 const struct ddr_data *data, const struct cmd_control *ctrl,
73 const struct emif_regs *regs, int nr)
74 {
75 ddr_pll_config(pll);
76 config_vtp(nr);
77 config_cmd_ctrl(ctrl, nr);
78
79 config_ddr_data(data, nr);
80 #ifdef CONFIG_AM33XX
81 config_io_ctrl(ioregs);
82
83 /* Set CKE to be controlled by EMIF/DDR PHY */
84 writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
85
86 #endif
87 #ifdef CONFIG_AM43XX
88 writel(readl(&cm_device->cm_dll_ctrl) & ~0x1, &cm_device->cm_dll_ctrl);
89 while ((readl(&cm_device->cm_dll_ctrl) & CM_DLL_READYST) == 0)
90 ;
91
92 config_io_ctrl(ioregs);
93
94 /* Set CKE to be controlled by EMIF/DDR PHY */
95 writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
96
97 if (emif_sdram_type(regs->sdram_config) == EMIF_SDRAM_TYPE_DDR3)
98 /* Allow EMIF to control DDR_RESET */
99 writel(0x00000000, &ddrctrl->ddrioctrl);
100 #endif
101
102 /* Program EMIF instance */
103 config_ddr_phy(regs, nr);
104 set_sdram_timings(regs, nr);
105 if (get_emif_rev(EMIF1_BASE) == EMIF_4D5)
106 config_sdram_emif4d5(regs, nr);
107 else
108 config_sdram(regs, nr);
109 }
110