1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * board.c
4 *
5 * Board functions for B&R BRSMARC1 Board
6 *
7 * Copyright (C) 2017 Hannes Schmelzer <oe5hpm@oevsv.at>
8 * B&R Industrial Automation GmbH - http://www.br-automation.com
9 *
10 */
11 #include <common.h>
12 #include <errno.h>
13 #include <init.h>
14 #include <spl.h>
15 #include <asm/arch/cpu.h>
16 #include <asm/arch/hardware.h>
17 #include <asm/arch/omap.h>
18 #include <asm/arch/ddr_defs.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/sys_proto.h>
21 #include <asm/arch/mem.h>
22 #include <asm/global_data.h>
23 #include <asm/io.h>
24 #include <asm/gpio.h>
25 #include <asm/emif.h>
26 #include <power/tps65217.h>
27 #include "../common/bur_common.h"
28 #include "../common/br_resetc.h"
29
30 /* -------------------------------------------------------------------------*/
31 /* -- defines for used GPIO Hardware -- */
32 #define PER_RESET (2 * 32 + 0)
33
34 DECLARE_GLOBAL_DATA_PTR;
35
36 #if defined(CONFIG_SPL_BUILD)
37 static const struct ddr_data ddr3_data = {
38 .datardsratio0 = MT41K256M16HA125E_RD_DQS,
39 .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
40 .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
41 .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
42 };
43
44 static const struct cmd_control ddr3_cmd_ctrl_data = {
45 .cmd0csratio = MT41K256M16HA125E_RATIO,
46 .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
47
48 .cmd1csratio = MT41K256M16HA125E_RATIO,
49 .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
50
51 .cmd2csratio = MT41K256M16HA125E_RATIO,
52 .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
53 };
54
55 static struct emif_regs ddr3_emif_reg_data = {
56 .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
57 .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
58 .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
59 .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
60 .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
61 .zq_config = MT41K256M16HA125E_ZQ_CFG,
62 .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
63 };
64
65 static const struct ctrl_ioregs ddr3_ioregs = {
66 .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
67 .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
68 .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
69 .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
70 .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
71 };
72
73 #define OSC (V_OSCK / 1000000)
74 const struct dpll_params dpll_ddr3 = { 400, OSC - 1, 1, -1, -1, -1, -1};
75
am33xx_spl_board_init(void)76 void am33xx_spl_board_init(void)
77 {
78 struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
79 struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;
80
81 int rc;
82 /*
83 * enable additional clocks of modules which are accessed later from
84 * VxWorks OS
85 */
86 u32 *const clk_domains[] = { 0 };
87 u32 *const clk_modules_specific[] = {
88 &cmwkup->wkup_adctscctrl,
89 &cmper->spi1clkctrl,
90 &cmper->dcan0clkctrl,
91 &cmper->dcan1clkctrl,
92 &cmper->timer4clkctrl,
93 &cmper->timer5clkctrl,
94 &cmper->lcdclkctrl,
95 &cmper->lcdcclkstctrl,
96 0
97 };
98 do_enable_clocks(clk_domains, clk_modules_specific, 1);
99
100 /* setup I2C */
101 enable_i2c_pin_mux();
102
103 /* peripheral reset */
104 rc = gpio_request(PER_RESET, "PER_RESET");
105 if (rc != 0)
106 printf("cannot request PER_RESET GPIO!\n");
107
108 rc = gpio_direction_output(PER_RESET, 0);
109 if (rc != 0)
110 printf("cannot set PER_RESET GPIO!\n");
111
112 /* setup pmic */
113 pmicsetup(0, 0);
114 }
115
get_dpll_ddr_params(void)116 const struct dpll_params *get_dpll_ddr_params(void)
117 {
118 return &dpll_ddr3;
119 }
120
sdram_init(void)121 void sdram_init(void)
122 {
123 config_ddr(400, &ddr3_ioregs,
124 &ddr3_data,
125 &ddr3_cmd_ctrl_data,
126 &ddr3_emif_reg_data, 0);
127 }
128 #endif /* CONFIG_SPL_BUILD */
129 #if !defined(CONFIG_SPL_BUILD)
130
131 /* decision if backlight is switched on or not on powerup */
board_backlightstate(void)132 int board_backlightstate(void)
133 {
134 u8 bklmask, rstcause;
135 int rc = 0;
136
137 rc |= br_resetc_regget(RSTCTRL_SCRATCHREG1, &bklmask);
138 rc |= br_resetc_regget(RSTCTRL_ERSTCAUSE, &rstcause);
139
140 if (rc != 0) {
141 printf("%s: read rstctrl failed!\n", __func__);
142 return 1;
143 }
144
145 if ((rstcause & bklmask) != 0)
146 return 0;
147
148 return 1;
149 }
150
151 /* Basic board specific setup. run quite after relocation */
board_init(void)152 int board_init(void)
153 {
154 if (power_tps65217_init(0))
155 printf("WARN: cannot setup PMIC 0x24 @ bus #0, not found!.\n");
156
157 return 0;
158 }
159
160 #if defined(CONFIG_BOARD_LATE_INIT)
161
board_late_init(void)162 int board_late_init(void)
163 {
164 br_resetc_bmode();
165
166 return 0;
167 }
168
169 #endif /* CONFIG_BOARD_LATE_INIT */
170 #endif /* !CONFIG_SPL_BUILD */
171