Teresa Remmet | c6dd9c6 | 2023-08-17 10:57:07 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (C) 2023 PHYTEC Messtechnik GmbH |
| 4 | * Author: Teresa Remmet <t.remmet@phytec.de> |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <asm/arch/sys_proto.h> |
| 9 | #include <dm/device.h> |
| 10 | #include <dm/uclass.h> |
| 11 | #include <i2c.h> |
| 12 | #include <u-boot/crc.h> |
| 13 | |
| 14 | #include "imx8m_som_detection.h" |
| 15 | |
| 16 | extern struct phytec_eeprom_data eeprom_data; |
| 17 | |
Yannic Moog | 5dd7f7c | 2023-12-20 09:45:35 +0100 | [diff] [blame] | 18 | #if IS_ENABLED(CONFIG_PHYTEC_IMX8M_SOM_DETECTION) |
| 19 | |
Teresa Remmet | c6dd9c6 | 2023-08-17 10:57:07 +0200 | [diff] [blame] | 20 | /* Check if the SoM is actually one of the following products: |
| 21 | * - i.MX8MM |
| 22 | * - i.MX8MN |
| 23 | * - i.MX8MP |
| 24 | * - i.MX8MQ |
| 25 | * |
| 26 | * Returns 0 in case it's a known SoM. Otherwise, returns -1. |
| 27 | */ |
Yannic Moog | 1132f36 | 2023-12-20 09:45:32 +0100 | [diff] [blame] | 28 | int __maybe_unused phytec_imx8m_detect(struct phytec_eeprom_data *data) |
Teresa Remmet | c6dd9c6 | 2023-08-17 10:57:07 +0200 | [diff] [blame] | 29 | { |
| 30 | char *opt; |
| 31 | u8 som; |
| 32 | |
Yannic Moog | 4feeda6 | 2023-12-20 09:45:33 +0100 | [diff] [blame] | 33 | if (!data) |
| 34 | data = &eeprom_data; |
| 35 | |
Teresa Remmet | c6dd9c6 | 2023-08-17 10:57:07 +0200 | [diff] [blame] | 36 | /* We can not do the check for early API revisions */ |
| 37 | if (data->api_rev < PHYTEC_API_REV2) |
| 38 | return -1; |
| 39 | |
Teresa Remmet | c6dd9c6 | 2023-08-17 10:57:07 +0200 | [diff] [blame] | 40 | som = data->data.data_api2.som_no; |
| 41 | debug("%s: som id: %u\n", __func__, som); |
| 42 | |
| 43 | opt = phytec_get_opt(data); |
| 44 | if (!opt) |
| 45 | return -1; |
| 46 | |
| 47 | if (som == PHYTEC_IMX8MP_SOM && is_imx8mp()) |
| 48 | return 0; |
| 49 | |
| 50 | if (som == PHYTEC_IMX8MM_SOM) { |
| 51 | if ((PHYTEC_GET_OPTION(opt[0]) != 0) && |
| 52 | (PHYTEC_GET_OPTION(opt[1]) == 0) && is_imx8mm()) |
| 53 | return 0; |
| 54 | else if ((PHYTEC_GET_OPTION(opt[0]) == 0) && |
| 55 | (PHYTEC_GET_OPTION(opt[1]) != 0) && is_imx8mn()) |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | if (som == PHYTEC_IMX8MQ_SOM && is_imx8mq()) |
| 60 | return 0; |
| 61 | |
| 62 | pr_err("%s: SoM ID does not match. Wrong EEPROM data?\n", __func__); |
| 63 | return -1; |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * All PHYTEC i.MX8M boards have RAM size definition at the |
| 68 | * same location. |
| 69 | */ |
| 70 | u8 __maybe_unused phytec_get_imx8m_ddr_size(struct phytec_eeprom_data *data) |
| 71 | { |
| 72 | char *opt; |
| 73 | u8 ddr_id; |
| 74 | |
| 75 | if (!data) |
| 76 | data = &eeprom_data; |
| 77 | |
| 78 | opt = phytec_get_opt(data); |
| 79 | if (opt) |
| 80 | ddr_id = PHYTEC_GET_OPTION(opt[2]); |
| 81 | else |
| 82 | ddr_id = PHYTEC_EEPROM_INVAL; |
| 83 | |
| 84 | debug("%s: ddr id: %u\n", __func__, ddr_id); |
| 85 | return ddr_id; |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | * Filter SPI-NOR flash information. All i.MX8M boards have this at |
| 90 | * the same location. |
| 91 | * returns: 0x0 if no SPI is populated. Otherwise a board depended |
| 92 | * code for the size. PHYTEC_EEPROM_INVAL when the data is invalid. |
| 93 | */ |
| 94 | u8 __maybe_unused phytec_get_imx8m_spi(struct phytec_eeprom_data *data) |
| 95 | { |
| 96 | char *opt; |
| 97 | u8 spi; |
| 98 | |
| 99 | if (!data) |
| 100 | data = &eeprom_data; |
| 101 | |
| 102 | if (data->api_rev < PHYTEC_API_REV2) |
| 103 | return PHYTEC_EEPROM_INVAL; |
| 104 | |
| 105 | opt = phytec_get_opt(data); |
| 106 | if (opt) |
| 107 | spi = PHYTEC_GET_OPTION(opt[4]); |
| 108 | else |
| 109 | spi = PHYTEC_EEPROM_INVAL; |
| 110 | |
| 111 | debug("%s: spi: %u\n", __func__, spi); |
| 112 | return spi; |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * Filter ethernet phy information. All i.MX8M boards have this at |
| 117 | * the same location. |
| 118 | * returns: 0x0 if no ethernet phy is populated. 0x1 if it is populated. |
| 119 | * PHYTEC_EEPROM_INVAL when the data is invalid. |
| 120 | */ |
| 121 | u8 __maybe_unused phytec_get_imx8m_eth(struct phytec_eeprom_data *data) |
| 122 | { |
| 123 | char *opt; |
| 124 | u8 eth; |
| 125 | |
| 126 | if (!data) |
| 127 | data = &eeprom_data; |
| 128 | |
| 129 | if (data->api_rev < PHYTEC_API_REV2) |
| 130 | return PHYTEC_EEPROM_INVAL; |
| 131 | |
| 132 | opt = phytec_get_opt(data); |
| 133 | if (opt) { |
| 134 | eth = PHYTEC_GET_OPTION(opt[5]); |
| 135 | eth &= 0x1; |
| 136 | } else { |
| 137 | eth = PHYTEC_EEPROM_INVAL; |
| 138 | } |
| 139 | |
| 140 | debug("%s: eth: %u\n", __func__, eth); |
| 141 | return eth; |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Filter RTC information for phyCORE-i.MX8MP. |
| 146 | * returns: 0 if no RTC is populated. 1 if it is populated. |
| 147 | * PHYTEC_EEPROM_INVAL when the data is invalid. |
| 148 | */ |
| 149 | u8 __maybe_unused phytec_get_imx8mp_rtc(struct phytec_eeprom_data *data) |
| 150 | { |
| 151 | char *opt; |
| 152 | u8 rtc; |
| 153 | |
| 154 | if (!data) |
| 155 | data = &eeprom_data; |
| 156 | |
| 157 | if (data->api_rev < PHYTEC_API_REV2) |
| 158 | return PHYTEC_EEPROM_INVAL; |
| 159 | |
| 160 | opt = phytec_get_opt(data); |
| 161 | if (opt) { |
| 162 | rtc = PHYTEC_GET_OPTION(opt[5]); |
| 163 | rtc &= 0x4; |
| 164 | rtc = !(rtc >> 2); |
| 165 | } else { |
| 166 | rtc = PHYTEC_EEPROM_INVAL; |
| 167 | } |
| 168 | debug("%s: rtc: %u\n", __func__, rtc); |
| 169 | return rtc; |
| 170 | } |
Yannic Moog | 5dd7f7c | 2023-12-20 09:45:35 +0100 | [diff] [blame] | 171 | |
| 172 | #else |
| 173 | |
| 174 | inline int __maybe_unused phytec_imx8m_detect(struct phytec_eeprom_data *data) |
| 175 | { |
| 176 | return -1; |
| 177 | } |
| 178 | |
| 179 | inline u8 __maybe_unused |
| 180 | phytec_get_imx8m_ddr_size(struct phytec_eeprom_data *data) |
| 181 | { |
| 182 | return PHYTEC_EEPROM_INVAL; |
| 183 | } |
| 184 | |
| 185 | inline u8 __maybe_unused phytec_get_imx8mp_rtc(struct phytec_eeprom_data *data) |
| 186 | { |
| 187 | return PHYTEC_EEPROM_INVAL; |
| 188 | } |
| 189 | |
| 190 | inline u8 __maybe_unused phytec_get_imx8m_spi(struct phytec_eeprom_data *data) |
| 191 | { |
| 192 | return PHYTEC_EEPROM_INVAL; |
| 193 | } |
| 194 | |
| 195 | inline u8 __maybe_unused phytec_get_imx8m_eth(struct phytec_eeprom_data *data) |
| 196 | { |
| 197 | return PHYTEC_EEPROM_INVAL; |
| 198 | } |
| 199 | |
| 200 | #endif /* IS_ENABLED(CONFIG_PHYTEC_IMX8M_SOM_DETECTION) */ |