1 /*
2  * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <asm/io.h>
9 #include <asm/arch/imx-regs.h>
10 #include <asm/arch/mx6-pins.h>
11 #include <asm/arch/clock.h>
12 #include <linux/errno.h>
13 #include <asm/gpio.h>
14 #include <asm/mach-imx/iomux-v3.h>
15 #include <mmc.h>
16 #include <fsl_esdhc.h>
17 #include <miiphy.h>
18 #include <netdev.h>
19 #include <usb.h>
20 
21 DECLARE_GLOBAL_DATA_PTR;
22 
23 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
24 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
25 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
26 
27 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
28 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
29 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
30 
31 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
32 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
33 
34 int dram_init(void)
35 {
36 #if defined(CONFIG_MX6DL) && !defined(CONFIG_MX6DL_LPDDR2) && \
37 	defined(CONFIG_DDR_32BIT)
38 	gd->ram_size = ((phys_size_t)CONFIG_DDR_MB * 1024 * 1024) / 2;
39 #else
40 	gd->ram_size = (phys_size_t)CONFIG_DDR_MB * 1024 * 1024;
41 #endif
42 
43 	return 0;
44 }
45 
46 iomux_v3_cfg_t const uart4_pads[] = {
47 	MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
48 	MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
49 };
50 
51 iomux_v3_cfg_t const usdhc3_pads[] = {
52 	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
53 	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
54 	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
55 	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
56 	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
57 	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
58 	MX6_PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
59 	MX6_PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
60 	MX6_PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
61 	MX6_PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
62 	MX6_PAD_NANDF_CS0__GPIO6_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
63 };
64 
65 iomux_v3_cfg_t const usdhc4_pads[] = {
66 	MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
67 	MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
68 	MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
69 	MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
70 	MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
71 	MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
72 	MX6_PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
73 	MX6_PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
74 	MX6_PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
75 	MX6_PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
76 };
77 
78 iomux_v3_cfg_t const enet_pads[] = {
79 	MX6_PAD_KEY_COL1__ENET_MDIO        | MUX_PAD_CTRL(ENET_PAD_CTRL),
80 	MX6_PAD_KEY_COL2__ENET_MDC         | MUX_PAD_CTRL(ENET_PAD_CTRL),
81 	MX6_PAD_RGMII_TXC__RGMII_TXC  | MUX_PAD_CTRL(ENET_PAD_CTRL),
82 	MX6_PAD_RGMII_TD0__RGMII_TD0  | MUX_PAD_CTRL(ENET_PAD_CTRL),
83 	MX6_PAD_RGMII_TD1__RGMII_TD1  | MUX_PAD_CTRL(ENET_PAD_CTRL),
84 	MX6_PAD_RGMII_TD2__RGMII_TD2  | MUX_PAD_CTRL(ENET_PAD_CTRL),
85 	MX6_PAD_RGMII_TD3__RGMII_TD3  | MUX_PAD_CTRL(ENET_PAD_CTRL),
86 	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
87 	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK  | MUX_PAD_CTRL(ENET_PAD_CTRL),
88 	MX6_PAD_RGMII_RXC__RGMII_RXC  | MUX_PAD_CTRL(ENET_PAD_CTRL),
89 	MX6_PAD_RGMII_RD0__RGMII_RD0  | MUX_PAD_CTRL(ENET_PAD_CTRL),
90 	MX6_PAD_RGMII_RD1__RGMII_RD1  | MUX_PAD_CTRL(ENET_PAD_CTRL),
91 	MX6_PAD_RGMII_RD2__RGMII_RD2  | MUX_PAD_CTRL(ENET_PAD_CTRL),
92 	MX6_PAD_RGMII_RD3__RGMII_RD3  | MUX_PAD_CTRL(ENET_PAD_CTRL),
93 	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
94 };
95 
96 
97 static void setup_iomux_uart(void)
98 {
99 	imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
100 }
101 
102 static void setup_iomux_enet(void)
103 {
104 	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
105 }
106 
107 #ifdef CONFIG_FSL_ESDHC
108 struct fsl_esdhc_cfg usdhc_cfg[2] = {
109 	{USDHC3_BASE_ADDR},
110 	{USDHC4_BASE_ADDR},
111 };
112 
113 int board_mmc_get_env_dev(int devno)
114 {
115 	return devno - 2;
116 }
117 
118 int board_mmc_getcd(struct mmc *mmc)
119 {
120 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
121 	int ret;
122 
123 	if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
124 		gpio_direction_input(IMX_GPIO_NR(6, 11));
125 		ret = !gpio_get_value(IMX_GPIO_NR(6, 11));
126 	} else /* Don't have the CD GPIO pin on board */
127 		ret = 1;
128 
129 	return ret;
130 }
131 
132 int board_mmc_init(bd_t *bis)
133 {
134 	int ret;
135 	u32 index = 0;
136 
137 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
138 	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
139 
140 	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
141 		switch (index) {
142 		case 0:
143 			imx_iomux_v3_setup_multiple_pads(
144 				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
145 			break;
146 		case 1:
147 			imx_iomux_v3_setup_multiple_pads(
148 				usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
149 			break;
150 		default:
151 			printf("Warning: you configured more USDHC controllers"
152 				"(%d) then supported by the board (%d)\n",
153 				index + 1, CONFIG_SYS_FSL_USDHC_NUM);
154 			return -EINVAL;
155 		}
156 
157 		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
158 		if (ret)
159 			return ret;
160 	}
161 
162 	return 0;
163 }
164 #endif
165 
166 #define MII_MMD_ACCESS_CTRL_REG		0xd
167 #define MII_MMD_ACCESS_ADDR_DATA_REG	0xe
168 #define MII_DBG_PORT_REG		0x1d
169 #define MII_DBG_PORT2_REG		0x1e
170 
171 int fecmxc_mii_postcall(int phy)
172 {
173 	unsigned short val;
174 
175 	/*
176 	 * Due to the i.MX6Q Armadillo2 board HW design,there is
177 	 * no 125Mhz clock input from SOC. In order to use RGMII,
178 	 * We need enable AR8031 ouput a 125MHz clk from CLK_25M
179 	 */
180 	miiphy_write("FEC", phy, MII_MMD_ACCESS_CTRL_REG, 0x7);
181 	miiphy_write("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, 0x8016);
182 	miiphy_write("FEC", phy, MII_MMD_ACCESS_CTRL_REG, 0x4007);
183 	miiphy_read("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, &val);
184 	val &= 0xffe3;
185 	val |= 0x18;
186 	miiphy_write("FEC", phy, MII_MMD_ACCESS_ADDR_DATA_REG, val);
187 
188 	/* For the RGMII phy, we need enable tx clock delay */
189 	miiphy_write("FEC", phy, MII_DBG_PORT_REG, 0x5);
190 	miiphy_read("FEC", phy, MII_DBG_PORT2_REG, &val);
191 	val |= 0x0100;
192 	miiphy_write("FEC", phy, MII_DBG_PORT2_REG, val);
193 
194 	miiphy_write("FEC", phy, MII_BMCR, 0xa100);
195 
196 	return 0;
197 }
198 
199 int board_eth_init(bd_t *bis)
200 {
201 	struct eth_device *dev;
202 	int ret = cpu_eth_init(bis);
203 
204 	if (ret)
205 		return ret;
206 
207 	dev = eth_get_dev_by_name("FEC");
208 	if (!dev) {
209 		printf("FEC MXC: Unable to get FEC device entry\n");
210 		return -EINVAL;
211 	}
212 
213 	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
214 	if (ret) {
215 		printf("FEC MXC: Unable to register FEC mii postcall\n");
216 		return ret;
217 	}
218 
219 	return 0;
220 }
221 
222 #ifdef CONFIG_USB_EHCI_MX6
223 #define USB_OTHERREGS_OFFSET	0x800
224 #define UCTRL_PWR_POL		(1 << 9)
225 
226 static iomux_v3_cfg_t const usb_otg_pads[] = {
227 	MX6_PAD_EIM_D22__USB_OTG_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
228 	MX6_PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
229 };
230 
231 static void setup_usb(void)
232 {
233 	imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
234 					 ARRAY_SIZE(usb_otg_pads));
235 
236 	/*
237 	 * set daisy chain for otg_pin_id on 6q.
238 	 * for 6dl, this bit is reserved
239 	 */
240 	imx_iomux_set_gpr_register(1, 13, 1, 1);
241 }
242 
243 int board_ehci_hcd_init(int port)
244 {
245 	u32 *usbnc_usb_ctrl;
246 
247 	if (port > 0)
248 		return -EINVAL;
249 
250 	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
251 				 port * 4);
252 
253 	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);
254 
255 	return 0;
256 }
257 #endif
258 
259 int board_early_init_f(void)
260 {
261 	setup_iomux_uart();
262 	setup_iomux_enet();
263 
264 	return 0;
265 }
266 
267 int board_init(void)
268 {
269 	/* address of boot parameters */
270 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
271 
272 #ifdef CONFIG_USB_EHCI_MX6
273 	setup_usb();
274 #endif
275 
276 	return 0;
277 }
278 
279 int checkboard(void)
280 {
281 #ifdef CONFIG_MX6DL
282 	puts("Board: MX6DL-Armadillo2\n");
283 #else
284 	puts("Board: MX6Q-Armadillo2\n");
285 #endif
286 
287 	return 0;
288 }
289