diff options
Diffstat (limited to 'board/gateworks/gw_ventana/gsc.c')
| -rw-r--r-- | board/gateworks/gw_ventana/gsc.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/board/gateworks/gw_ventana/gsc.c b/board/gateworks/gw_ventana/gsc.c index 718e1651d0..3febd1276e 100644 --- a/board/gateworks/gw_ventana/gsc.c +++ b/board/gateworks/gw_ventana/gsc.c @@ -132,6 +132,33 @@ int gsc_info(int verbose) return 0; } +/* + * 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; +} + #ifdef CONFIG_CMD_GSC static int do_gsc_wd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { |