diff options
| -rw-r--r-- | board/ge/bx50v3/bx50v3.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c index c11fc40abe5..7fcebba0260 100644 --- a/board/ge/bx50v3/bx50v3.c +++ b/board/ge/bx50v3/bx50v3.c @@ -31,6 +31,7 @@ #include <asm/arch/sys_proto.h> #include <power/regulator.h> #include <power/da9063_pmic.h> +#include <power/pmic.h> #include <input.h> #include <pwm.h> #include <version.h> @@ -432,6 +433,29 @@ static const struct boot_mode board_boot_modes[] = { }; #endif + +/* + * The SoM used by these boards has XTAL not connected despite datasheet + * suggesting connecting unused XTAL pins to ground. Without explicitly + * clearing the CRYSTAL bit the system runs unstable and sometimes reboots + * unexpectedly. + */ +static void pmic_crystal_fix(void) +{ + struct udevice *pmic; + static const uint EN_32K_CRYSTAL = (1 << 3); + + if (pmic_get("pmic@58", &pmic)) { + puts("failed to get device for PMIC\n"); + return; + } + + if (pmic_clrsetbits(pmic, DA9063_REG_EN_32K, EN_32K_CRYSTAL, 0) < 0) { + puts("failed to clear CRYSTAL bit\n"); + return; + } +} + void pmic_init(void) { struct udevice *reg; @@ -445,6 +469,8 @@ void pmic_init(void) "bperi", }; + pmic_crystal_fix(); + for (i = 0; i < ARRAY_SIZE(bucks); i++) { ret = regulator_get_by_devname(bucks[i], ®); if (reg < 0) { |