ventana: Add Gateworks Ventana family support

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>

1 files changed, 64 insertions, 0 deletions

diff --git a/board/gateworks/gw_ventana/gsc.h b/board/gateworks/gw_ventana/gsc.h
new file mode 100644
index 0000000000..da970c39d6
--- /dev/null
+++ b/board/gateworks/gw_ventana/gsc.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2013 Gateworks Corporation
+ *
+ * Author: Tim Harvey <tharvey@gateworks.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __ASSEMBLY__
+
+/* i2c slave addresses */
+#define GSC_SC_ADDR		0x20
+#define GSC_RTC_ADDR		0x68
+#define GSC_HWMON_ADDR		0x29
+#define GSC_EEPROM_ADDR		0x51
+
+/* System Controller registers */
+enum {
+	GSC_SC_CTRL0		= 0x00,
+	GSC_SC_CTRL1		= 0x01,
+	GSC_SC_STATUS		= 0x0a,
+	GSC_SC_FWVER		= 0x0e,
+};
+
+/* System Controller Control1 bits */
+enum {
+	GSC_SC_CTRL1_WDDIS	= 7, /* 1 = disable watchdog */
+};
+
+/* System Controller Interrupt bits */
+enum {
+	GSC_SC_IRQ_PB		= 0, /* Pushbutton switch */
+	GSC_SC_IRQ_SECURE	= 1, /* Secure Key erase operation complete */
+	GSC_SC_IRQ_EEPROM_WP	= 2, /* EEPROM write violation */
+	GSC_SC_IRQ_GPIO		= 4, /* GPIO change */
+	GSC_SC_IRQ_TAMPER	= 5, /* Tamper detect */
+	GSC_SC_IRQ_WATCHDOG	= 6, /* Watchdog trip */
+	GSC_SC_IRQ_PBLONG	= 7, /* Pushbutton long hold */
+};
+
+/* Hardware Monitor registers */
+enum {
+	GSC_HWMON_TEMP		= 0x00,
+	GSC_HWMON_VIN		= 0x02,
+	GSC_HWMON_VDD_3P3	= 0x05,
+	GSC_HWMON_VBATT		= 0x08,
+	GSC_HWMON_VDD_5P0	= 0x0b,
+	GSC_HWMON_VDD_CORE	= 0x0e,
+	GSC_HWMON_VDD_HIGH	= 0x14,
+	GSC_HWMON_VDD_DDR	= 0x17,
+	GSC_HWMON_VDD_SOC	= 0x11,
+	GSC_HWMON_VDD_1P8	= 0x1d,
+	GSC_HWMON_VDD_2P5	= 0x23,
+	GSC_HWMON_VDD_1P0	= 0x20,
+};
+
+/*
+ * I2C transactions to the GSC are done via these functions which
+ * perform retries in the case of a busy GSC NAK'ing the transaction
+ */
+int gsc_i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len);
+int gsc_i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len);
+#endif
+