1 /*
2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
3  *
4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <asm/arch/clock.h>
10 #include <asm/arch/iomux.h>
11 #include <asm/arch/imx-regs.h>
12 #include <asm/arch/mx6-pins.h>
13 #include <asm/arch/sys_proto.h>
14 #include <asm/gpio.h>
15 #include <asm/imx-common/iomux-v3.h>
16 #include <asm/io.h>
17 #include <asm/sizes.h>
18 #include <common.h>
19 #include <fsl_esdhc.h>
20 #include <mmc.h>
21 
22 DECLARE_GLOBAL_DATA_PTR;
23 
24 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
25 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
26 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
27 
28 #define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP |			\
29 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
30 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
31 
32 int dram_init(void)
33 {
34 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
35 
36 	return 0;
37 }
38 
39 static iomux_v3_cfg_t const uart1_pads[] = {
40 	MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
41 	MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
42 };
43 
44 static iomux_v3_cfg_t const usdhc2_pads[] = {
45 	MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
46 	MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
47 	MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
48 	MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
49 	MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
50 	MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
51 };
52 
53 static void setup_iomux_uart(void)
54 {
55 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
56 }
57 
58 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
59 	{USDHC2_BASE_ADDR},
60 };
61 
62 int board_mmc_getcd(struct mmc *mmc)
63 {
64 	return 1;	/* Assume boot SD always present */
65 }
66 
67 int board_mmc_init(bd_t *bis)
68 {
69 	imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
70 
71 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
72 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
73 }
74 
75 int board_early_init_f(void)
76 {
77 	setup_iomux_uart();
78 	return 0;
79 }
80 
81 int board_init(void)
82 {
83 	/* address of boot parameters */
84 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
85 
86 	return 0;
87 }
88 
89 u32 get_board_rev(void)
90 {
91 	return get_cpu_rev();
92 }
93 
94 int checkboard(void)
95 {
96 	puts("Board: MX6SLEVK\n");
97 
98 	return 0;
99 }
100