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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>
This commit is contained in:
Tim Harvey 2015-05-08 18:28:36 -07:00 committed by Stefano Babic
parent e56c5791af
commit 2d833c8528
3 changed files with 30 additions and 22 deletions
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27
board/gateworks/gw_ventana/gsc.c
View File

@ -132,6 +132,33 @@ int gsc_info(int verbose)
return 0; 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, &reg, 1)) {
reg |= (1 << GSC_SC_CTRL1_WDDIS);
if (!gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, &reg, 1))
return 0;
}
puts("Error: could not disable GSC Watchdog\n");
return 1;
}
#ifdef CONFIG_CMD_GSC #ifdef CONFIG_CMD_GSC
static int do_gsc_wd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) static int do_gsc_wd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{ {

1
board/gateworks/gw_ventana/gsc.h
View File

@ -66,5 +66,6 @@ enum {
int gsc_i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len); 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); int gsc_i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len);
int gsc_info(int verbose); int gsc_info(int verbose);
int gsc_boot_wd_disable(void);
#endif #endif

24
board/gateworks/gw_ventana/gw_ventana.c
View File

@ -659,7 +659,6 @@ static const struct boot_mode board_boot_modes[] = {
int misc_init_r(void) int misc_init_r(void)
{ {
struct ventana_board_info *info = &ventana_info; struct ventana_board_info *info = &ventana_info;
unsigned char reg;
/* set env vars based on EEPROM data */ /* set env vars based on EEPROM data */
if (ventana_info.model[0]) { if (ventana_info.model[0]) {
@ -740,27 +739,8 @@ int misc_init_r(void)
add_board_boot_modes(board_boot_modes); add_board_boot_modes(board_boot_modes);
#endif #endif
/* /* disable boot watchdog */
* The Gateworks System Controller implements a boot gsc_boot_wd_disable();
* 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 and display/clear the timeout flag if set
*/
i2c_set_bus_num(CONFIG_I2C_GSC);
if (!gsc_i2c_read(GSC_SC_ADDR, GSC_SC_CTRL1, 1, &reg, 1)) {
reg |= (1 << GSC_SC_CTRL1_WDDIS);
if (gsc_i2c_write(GSC_SC_ADDR, GSC_SC_CTRL1, 1, &reg, 1))
puts("Error: could not disable GSC Watchdog\n");
} else {
puts("Error: could not disable GSC Watchdog\n");
}
return 0; return 0;
} }