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https://github.com/brain-hackers/u-boot-brain
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59189a8b26
Gateworks Ventana is a product family based on the i.MX6. This patch adds support for all boards in the Ventana family. Where possible, data from the boards EEPROM is used to determine various details about the board at runtime. Signed-off-by: Tim Harvey <tharvey@gateworks.com>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Copyright (C) 2013 Gateworks Corporation
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*
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* Author: Tim Harvey <tharvey@gateworks.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASSEMBLY__
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/* i2c slave addresses */
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#define GSC_SC_ADDR 0x20
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#define GSC_RTC_ADDR 0x68
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#define GSC_HWMON_ADDR 0x29
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#define GSC_EEPROM_ADDR 0x51
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/* System Controller registers */
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enum {
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GSC_SC_CTRL0 = 0x00,
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GSC_SC_CTRL1 = 0x01,
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GSC_SC_STATUS = 0x0a,
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GSC_SC_FWVER = 0x0e,
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};
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/* System Controller Control1 bits */
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enum {
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GSC_SC_CTRL1_WDDIS = 7, /* 1 = disable watchdog */
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};
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/* System Controller Interrupt bits */
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enum {
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GSC_SC_IRQ_PB = 0, /* Pushbutton switch */
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GSC_SC_IRQ_SECURE = 1, /* Secure Key erase operation complete */
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GSC_SC_IRQ_EEPROM_WP = 2, /* EEPROM write violation */
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GSC_SC_IRQ_GPIO = 4, /* GPIO change */
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GSC_SC_IRQ_TAMPER = 5, /* Tamper detect */
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GSC_SC_IRQ_WATCHDOG = 6, /* Watchdog trip */
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GSC_SC_IRQ_PBLONG = 7, /* Pushbutton long hold */
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};
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/* Hardware Monitor registers */
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enum {
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GSC_HWMON_TEMP = 0x00,
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GSC_HWMON_VIN = 0x02,
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GSC_HWMON_VDD_3P3 = 0x05,
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GSC_HWMON_VBATT = 0x08,
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GSC_HWMON_VDD_5P0 = 0x0b,
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GSC_HWMON_VDD_CORE = 0x0e,
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GSC_HWMON_VDD_HIGH = 0x14,
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GSC_HWMON_VDD_DDR = 0x17,
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GSC_HWMON_VDD_SOC = 0x11,
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GSC_HWMON_VDD_1P8 = 0x1d,
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GSC_HWMON_VDD_2P5 = 0x23,
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GSC_HWMON_VDD_1P0 = 0x20,
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};
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/*
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* I2C transactions to the GSC are done via these functions which
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* perform retries in the case of a busy GSC NAK'ing the transaction
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*/
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int gsc_i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len);
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int gsc_i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len);
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#endif
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