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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
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2 | /* |
3 | * Copyright (C) 2012 Freescale Semiconductor, Inc. | |
4 | * Author: Fabio Estevam <fabio.estevam@freescale.com> | |
5 | * | |
a5e30525 | 6 | * Copyright (C) 2013, 2014 TQ-Systems (ported SabreSD to TQMa6x) |
cb07d74e | 7 | * Author: Markus Niebel <markus.niebel@tq-group.com> |
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8 | */ |
9 | ||
5255932f | 10 | #include <init.h> |
90526e9f | 11 | #include <net.h> |
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12 | #include <asm/io.h> |
13 | #include <asm/arch/clock.h> | |
14 | #include <asm/arch/mx6-pins.h> | |
15 | #include <asm/arch/imx-regs.h> | |
16 | #include <asm/arch/iomux.h> | |
17 | #include <asm/arch/sys_proto.h> | |
c05ed00a | 18 | #include <linux/delay.h> |
1221ce45 | 19 | #include <linux/errno.h> |
cb07d74e | 20 | #include <asm/gpio.h> |
552a848e | 21 | #include <asm/mach-imx/mxc_i2c.h> |
cb07d74e | 22 | |
d678a59d | 23 | #include <common.h> |
e37ac717 | 24 | #include <fsl_esdhc_imx.h> |
b08c8c48 | 25 | #include <linux/libfdt.h> |
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26 | #include <malloc.h> |
27 | #include <i2c.h> | |
28 | #include <micrel.h> | |
29 | #include <miiphy.h> | |
30 | #include <mmc.h> | |
31 | #include <netdev.h> | |
32 | ||
33 | #include "tqma6_bb.h" | |
34 | ||
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35 | #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ |
36 | PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) | |
37 | ||
38 | #define USDHC_CLK_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ | |
39 | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) | |
40 | ||
41 | #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ | |
42 | PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) | |
43 | ||
44 | #define GPIO_OUT_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \ | |
45 | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) | |
46 | ||
47 | #define GPIO_IN_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \ | |
48 | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) | |
49 | ||
50 | #define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ | |
51 | PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) | |
52 | ||
53 | #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ | |
03cfff0e | 54 | PAD_CTL_DSE_80ohm | PAD_CTL_HYS | \ |
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55 | PAD_CTL_ODE | PAD_CTL_SRE_FAST) |
56 | ||
d4b349e4 | 57 | #if defined(CONFIG_TQMA6Q) |
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58 | |
59 | #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII 0x02e0790 | |
60 | #define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM 0x02e07ac | |
61 | ||
468fb1e4 | 62 | #elif defined(CONFIG_TQMA6S) || defined(CONFIG_TQMA6DL) |
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63 | |
64 | #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII 0x02e0768 | |
65 | #define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM 0x02e0788 | |
66 | ||
67 | #else | |
68 | ||
d4b349e4 | 69 | #error "need to select module" |
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70 | |
71 | #endif | |
72 | ||
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73 | /* disable on die termination for RGMII */ |
74 | #define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM_DISABLE 0x00000000 | |
75 | /* optimised drive strength for 1.0 .. 1.3 V signal on RGMII */ | |
76 | #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P2V 0x00080000 | |
77 | /* optimised drive strength for 1.3 .. 2.5 V signal on RGMII */ | |
78 | #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P5V 0x000C0000 | |
79 | ||
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80 | static void mba6_setup_iomuxc_enet(void) |
81 | { | |
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82 | struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; |
83 | ||
84 | /* clear gpr1[ENET_CLK_SEL] for externel clock */ | |
85 | clrbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK); | |
86 | ||
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87 | __raw_writel(IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM_DISABLE, |
88 | (void *)IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM); | |
89 | __raw_writel(IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P5V, | |
90 | (void *)IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII); | |
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91 | } |
92 | ||
93 | static iomux_v3_cfg_t const mba6_uart2_pads[] = { | |
94 | NEW_PAD_CTRL(MX6_PAD_SD4_DAT4__UART2_RX_DATA, UART_PAD_CTRL), | |
95 | NEW_PAD_CTRL(MX6_PAD_SD4_DAT7__UART2_TX_DATA, UART_PAD_CTRL), | |
96 | }; | |
97 | ||
98 | static void mba6_setup_iomuxc_uart(void) | |
99 | { | |
100 | imx_iomux_v3_setup_multiple_pads(mba6_uart2_pads, | |
101 | ARRAY_SIZE(mba6_uart2_pads)); | |
102 | } | |
103 | ||
8f660ba7 | 104 | int board_mmc_get_env_dev(int devno) |
cb07d74e | 105 | { |
fd53ec5b | 106 | /* |
8f660ba7 MK |
107 | * This assumes that the baseboard registered |
108 | * the boot device first ... | |
109 | * Note: SDHC3 == idx2 | |
fd53ec5b | 110 | */ |
8f660ba7 | 111 | return (2 == devno) ? 0 : 1; |
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112 | } |
113 | ||
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114 | int board_phy_config(struct phy_device *phydev) |
115 | { | |
116 | /* | |
117 | * optimized pad skew values depends on CPU variant on the TQMa6x module: | |
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118 | * CONFIG_TQMA6Q: i.MX6Q/D |
119 | * CONFIG_TQMA6S: i.MX6S | |
468fb1e4 | 120 | * CONFIG_TQMA6DL: i.MX6DL |
cb07d74e | 121 | */ |
d4b349e4 | 122 | #if defined(CONFIG_TQMA6Q) |
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123 | #define MBA6X_KSZ9031_CTRL_SKEW 0x0032 |
124 | #define MBA6X_KSZ9031_CLK_SKEW 0x03ff | |
125 | #define MBA6X_KSZ9031_RX_SKEW 0x3333 | |
126 | #define MBA6X_KSZ9031_TX_SKEW 0x2036 | |
468fb1e4 | 127 | #elif defined(CONFIG_TQMA6S) || defined(CONFIG_TQMA6DL) |
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128 | #define MBA6X_KSZ9031_CTRL_SKEW 0x0030 |
129 | #define MBA6X_KSZ9031_CLK_SKEW 0x03ff | |
130 | #define MBA6X_KSZ9031_RX_SKEW 0x3333 | |
131 | #define MBA6X_KSZ9031_TX_SKEW 0x2052 | |
132 | #else | |
133 | #error | |
134 | #endif | |
135 | /* min rx/tx ctrl delay */ | |
136 | ksz9031_phy_extended_write(phydev, 2, | |
137 | MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW, | |
138 | MII_KSZ9031_MOD_DATA_NO_POST_INC, | |
139 | MBA6X_KSZ9031_CTRL_SKEW); | |
140 | /* min rx delay */ | |
141 | ksz9031_phy_extended_write(phydev, 2, | |
142 | MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW, | |
143 | MII_KSZ9031_MOD_DATA_NO_POST_INC, | |
144 | MBA6X_KSZ9031_RX_SKEW); | |
145 | /* max tx delay */ | |
146 | ksz9031_phy_extended_write(phydev, 2, | |
147 | MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW, | |
148 | MII_KSZ9031_MOD_DATA_NO_POST_INC, | |
149 | MBA6X_KSZ9031_TX_SKEW); | |
150 | /* rx/tx clk skew */ | |
151 | ksz9031_phy_extended_write(phydev, 2, | |
152 | MII_KSZ9031_EXT_RGMII_CLOCK_SKEW, | |
153 | MII_KSZ9031_MOD_DATA_NO_POST_INC, | |
154 | MBA6X_KSZ9031_CLK_SKEW); | |
155 | ||
156 | phydev->drv->config(phydev); | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
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161 | int tqma6_bb_board_early_init_f(void) |
162 | { | |
163 | mba6_setup_iomuxc_uart(); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | int tqma6_bb_board_init(void) | |
169 | { | |
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170 | mba6_setup_iomuxc_enet(); |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
175 | int tqma6_bb_board_late_init(void) | |
176 | { | |
177 | return 0; | |
178 | } | |
179 | ||
180 | const char *tqma6_bb_get_boardname(void) | |
181 | { | |
182 | return "MBa6x"; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Device Tree Support | |
187 | */ | |
188 | #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) | |
b75d8dc5 | 189 | void tqma6_bb_ft_board_setup(void *blob, struct bd_info *bd) |
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190 | { |
191 | /* TBD */ | |
192 | } | |
193 | #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ |