+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Gateworks Corporation
*
* Author: Tim Harvey <tharvey@gateworks.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
-#include <asm/errno.h>
+#include <common.h>
+#include <command.h>
+#include <log.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
#include <common.h>
#include <i2c.h>
#include <linux/ctype.h>
+#include "ventana_eeprom.h"
#include "gsc.h"
-#define MINMAX(n, percent) ((n)*(100-percent)/100), ((n)*(100+percent)/100)
-
/*
* The Gateworks System Controller will fail to ACK a master transaction if
* it is busy, which can occur during its 1HZ timer tick while reading ADC's.
return ret;
}
-#ifdef CONFIG_CMD_GSC
-static void read_hwmon(const char *name, uint reg, uint size, uint low,
- uint high)
+static void read_hwmon(const char *name, uint reg, uint size)
{
unsigned char buf[3];
uint ui;
puts("fRD\n");
} else {
ui = buf[0] | (buf[1]<<8) | (buf[2]<<16);
+ if (size == 2 && ui > 0x8000)
+ ui -= 0xffff;
if (ui == 0xffffff)
- printf("invalid");
- else if (ui < low)
- printf("%d Failed - Low", ui);
- else if (ui > high)
- printf("%d Failed - High", ui);
+ puts("invalid\n");
else
- printf("%d", ui);
+ printf("%d\n", ui);
}
- puts("\n");
}
-int do_gsc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int gsc_info(int verbose)
{
- const char *model = getenv("model");
+ unsigned char buf[16];
i2c_set_bus_num(0);
- read_hwmon("Temp", GSC_HWMON_TEMP, 2, 0, 9000);
- read_hwmon("VIN", GSC_HWMON_VIN, 3, 8000, 60000);
- read_hwmon("VBATT", GSC_HWMON_VBATT, 3, 1800, 3500);
- read_hwmon("VDD_3P3", GSC_HWMON_VDD_3P3, 3, MINMAX(3300, 10));
- read_hwmon("VDD_HIGH", GSC_HWMON_VDD_HIGH, 3, MINMAX(3000, 10));
- read_hwmon("VDD_DDR", GSC_HWMON_VDD_DDR, 3, MINMAX(1500, 10));
- read_hwmon("VDD_5P0", GSC_HWMON_VDD_5P0, 3, MINMAX(5000, 10));
- read_hwmon("VDD_2P5", GSC_HWMON_VDD_2P5, 3, MINMAX(2500, 10));
- read_hwmon("VDD_1P8", GSC_HWMON_VDD_1P8, 3, MINMAX(1800, 10));
-
- switch (model[3]) {
+ if (gsc_i2c_read(GSC_SC_ADDR, 0, 1, buf, 16))
+ return CMD_RET_FAILURE;
+
+ printf("GSC: v%d", buf[GSC_SC_FWVER]);
+ printf(" 0x%04x", buf[GSC_SC_FWCRC] | buf[GSC_SC_FWCRC+1]<<8);
+ printf(" WDT:%sabled", (buf[GSC_SC_CTRL1] & (1<<GSC_SC_CTRL1_WDEN))
+ ? "en" : "dis");
+ if (buf[GSC_SC_STATUS] & (1 << GSC_SC_IRQ_WATCHDOG)) {
+ buf[GSC_SC_STATUS] &= ~(1 << GSC_SC_IRQ_WATCHDOG);
+ puts(" WDT_RESET");
+ gsc_i2c_write(GSC_SC_ADDR, GSC_SC_STATUS, 1,
+ &buf[GSC_SC_STATUS], 1);
+ }
+ if (!gsc_i2c_read(GSC_HWMON_ADDR, GSC_HWMON_TEMP, 1, buf, 2)) {
+ int ui = buf[0] | buf[1]<<8;
+ if (ui > 0x8000)
+ ui -= 0xffff;
+ printf(" board temp at %dC", ui / 10);
+ }
+ puts("\n");
+ if (!verbose)
+ return CMD_RET_SUCCESS;
+
+ read_hwmon("Temp", GSC_HWMON_TEMP, 2);
+ read_hwmon("VIN", GSC_HWMON_VIN, 3);
+ read_hwmon("VBATT", GSC_HWMON_VBATT, 3);
+ read_hwmon("VDD_3P3", GSC_HWMON_VDD_3P3, 3);
+ read_hwmon("VDD_ARM", GSC_HWMON_VDD_CORE, 3);
+ read_hwmon("VDD_SOC", GSC_HWMON_VDD_SOC, 3);
+ read_hwmon("VDD_HIGH", GSC_HWMON_VDD_HIGH, 3);
+ read_hwmon("VDD_DDR", GSC_HWMON_VDD_DDR, 3);
+ read_hwmon("VDD_5P0", GSC_HWMON_VDD_5P0, 3);
+ if (strncasecmp((const char*) ventana_info.model, "GW553", 5))
+ read_hwmon("VDD_2P5", GSC_HWMON_VDD_2P5, 3);
+ read_hwmon("VDD_1P8", GSC_HWMON_VDD_1P8, 3);
+ read_hwmon("VDD_IO2", GSC_HWMON_VDD_IO2, 3);
+ switch (ventana_info.model[3]) {
case '1': /* GW51xx */
- read_hwmon("VDD_CORE", GSC_HWMON_VDD_CORE, 3, MINMAX(1175, 10));
- read_hwmon("VDD_SOC", GSC_HWMON_VDD_SOC, 3, MINMAX(1175, 10));
+ read_hwmon("VDD_IO3", GSC_HWMON_VDD_IO4, 3); /* -C rev */
break;
case '2': /* GW52xx */
+ break;
case '3': /* GW53xx */
- read_hwmon("VDD_CORE", GSC_HWMON_VDD_CORE, 3, MINMAX(1175, 10));
- read_hwmon("VDD_SOC", GSC_HWMON_VDD_SOC, 3, MINMAX(1175, 10));
- read_hwmon("VDD_1P0", GSC_HWMON_VDD_1P0, 3, MINMAX(1000, 10));
+ read_hwmon("VDD_IO4", GSC_HWMON_VDD_IO4, 3); /* -C rev */
+ read_hwmon("VDD_GPS", GSC_HWMON_VDD_IO3, 3);
break;
case '4': /* GW54xx */
- read_hwmon("VDD_CORE", GSC_HWMON_VDD_CORE, 3, MINMAX(1375, 10));
- read_hwmon("VDD_SOC", GSC_HWMON_VDD_SOC, 3, MINMAX(1375, 10));
- read_hwmon("VDD_1P0", GSC_HWMON_VDD_1P0, 3, MINMAX(1000, 10));
+ read_hwmon("VDD_IO3", GSC_HWMON_VDD_IO4, 3); /* -C rev */
+ read_hwmon("VDD_GPS", GSC_HWMON_VDD_IO3, 3);
+ break;
+ case '5': /* GW55xx */
break;
+ case '6': /* GW560x */
+ read_hwmon("VDD_IO4", GSC_HWMON_VDD_IO4, 3);
+ read_hwmon("VDD_GPS", GSC_HWMON_VDD_IO3, 3);
+ break;
+ case '9': /* GW590x */
+ read_hwmon("AMONBMON", GSC_HWMON_VDD_IO3, 3);
+ read_hwmon("BAT_VOLT", GSC_HWMON_VDD_EXT, 3);
+ read_hwmon("BAT_TEMP", GSC_HWMON_VDD_IO4, 2);
}
return 0;
}
-U_BOOT_CMD(gsc, 1, 1, do_gsc,
- "GSC test",
- ""
-);
+/*
+ * The Gateworks System Controller implements a boot
+ * watchdog (always enabled) as a workaround for IMX6 boot related
+ * errata such as:
+ * ERR005768 - no fix scheduled
+ * ERR006282 - fixed in silicon r1.2
+ * ERR007117 - fixed in silicon r1.3
+ * ERR007220 - fixed in silicon r1.3
+ * ERR007926 - no fix scheduled
+ * see http://cache.freescale.com/files/32bit/doc/errata/IMX6DQCE.pdf
+ *
+ * Disable the boot watchdog
+ */
+int gsc_boot_wd_disable(void)
+{
+ u8 reg;
+
+ i2c_set_bus_num(CONFIG_I2C_GSC);
+ if (!gsc_i2c_read(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1)) {
+ reg |= (1 << GSC_SC_CTRL1_WDDIS);
+ if (!gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ return 0;
+ }
+ puts("Error: could not disable GSC Watchdog\n");
+ return 1;
+}
+
+#if defined(CONFIG_CMD_GSC) && !defined(CONFIG_SPL_BUILD)
+static int do_gsc_sleep(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ unsigned char reg;
+ unsigned long secs = 0;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ secs = simple_strtoul(argv[1], NULL, 10);
+ printf("GSC Sleeping for %ld seconds\n", secs);
+
+ i2c_set_bus_num(0);
+ reg = (secs >> 24) & 0xff;
+ if (gsc_i2c_write(GSC_SC_ADDR, 9, 1, ®, 1))
+ goto error;
+ reg = (secs >> 16) & 0xff;
+ if (gsc_i2c_write(GSC_SC_ADDR, 8, 1, ®, 1))
+ goto error;
+ reg = (secs >> 8) & 0xff;
+ if (gsc_i2c_write(GSC_SC_ADDR, 7, 1, ®, 1))
+ goto error;
+ reg = secs & 0xff;
+ if (gsc_i2c_write(GSC_SC_ADDR, 6, 1, ®, 1))
+ goto error;
+ if (gsc_i2c_read(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ goto error;
+ reg |= (1 << 2);
+ if (gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ goto error;
+ reg &= ~(1 << 2);
+ reg |= 0x3;
+ if (gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ goto error;
+
+ return CMD_RET_SUCCESS;
+
+error:
+ printf("i2c error\n");
+ return CMD_RET_FAILURE;
+}
+
+static int do_gsc_wd(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ unsigned char reg;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ if (strcasecmp(argv[1], "enable") == 0) {
+ int timeout = 0;
+
+ if (argc > 2)
+ timeout = simple_strtoul(argv[2], NULL, 10);
+ i2c_set_bus_num(0);
+ if (gsc_i2c_read(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ return CMD_RET_FAILURE;
+ reg &= ~((1 << GSC_SC_CTRL1_WDEN) | (1 << GSC_SC_CTRL1_WDTIME));
+ if (timeout == 60)
+ reg |= (1 << GSC_SC_CTRL1_WDTIME);
+ else
+ timeout = 30;
+ reg |= (1 << GSC_SC_CTRL1_WDEN);
+ if (gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ return CMD_RET_FAILURE;
+ printf("GSC Watchdog enabled with timeout=%d seconds\n",
+ timeout);
+ } else if (strcasecmp(argv[1], "disable") == 0) {
+ i2c_set_bus_num(0);
+ if (gsc_i2c_read(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ return CMD_RET_FAILURE;
+ reg &= ~((1 << GSC_SC_CTRL1_WDEN) | (1 << GSC_SC_CTRL1_WDTIME));
+ if (gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, ®, 1))
+ return CMD_RET_FAILURE;
+ printf("GSC Watchdog disabled\n");
+ } else {
+ return CMD_RET_USAGE;
+ }
+ return CMD_RET_SUCCESS;
+}
+
+static int do_gsc(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ if (argc < 2)
+ return gsc_info(1);
+
+ if (strcasecmp(argv[1], "wd") == 0)
+ return do_gsc_wd(cmdtp, flag, --argc, ++argv);
+ else if (strcasecmp(argv[1], "sleep") == 0)
+ return do_gsc_sleep(cmdtp, flag, --argc, ++argv);
+
+ return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+ gsc, 4, 1, do_gsc, "GSC configuration",
+ "[wd enable [30|60]]|[wd disable]|[sleep <secs>]\n"
+ );
#endif /* CONFIG_CMD_GSC */
git.openpandora.org / pandora-u-boot.git / blobdiff