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| author | Tim Harvey <tharvey@gateworks.com> | 2015-05-08 18:28:36 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-05-15 19:21:25 +0200 |
| commit | 2d833c8528afa1d080f29597bae732c6d048c316 (patch) | |
| tree | 61d14a8706b47d0c4a5df3340100990f79ceb71c /board/gateworks/gw_ventana/gsc.c | |
| parent | e56c5791afae91c0950875d4df2ad1fcc14702a6 (diff) | |
| download | u-boot-imx-2d833c8528afa1d080f29597bae732c6d048c316.zip u-boot-imx-2d833c8528afa1d080f29597bae732c6d048c316.tar.gz u-boot-imx-2d833c8528afa1d080f29597bae732c6d048c316.tar.bz2 | |
imx: ventana: move GSC boot watchdog disable function to gsc.c
Move the code that disables the GSC boot watchdog into gsc.c
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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 718e165..3febd12 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[]) { |