diff options
Diffstat (limited to 'board/toradex/colibri_t20')
| -rw-r--r-- | board/toradex/colibri_t20/colibri_t20.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/board/toradex/colibri_t20/colibri_t20.c b/board/toradex/colibri_t20/colibri_t20.c index 81d344ca04..42b293d81e 100644 --- a/board/toradex/colibri_t20/colibri_t20.c +++ b/board/toradex/colibri_t20/colibri_t20.c @@ -13,9 +13,44 @@ #include <asm/arch-tegra/tegra.h> #include <asm/gpio.h> #include <asm/io.h> +#include <i2c.h> + +#define PMU_I2C_ADDRESS 0x34 +#define MAX_I2C_RETRY 3 +#define PMU_SUPPLYENE 0x14 +#define PMU_SUPPLYENE_SYSINEN (1<<5) +#define PMU_SUPPLYENE_EXITSLREQ (1<<1) int arch_misc_init(void) { + /* Disable PMIC sleep mode on low supply voltage */ + struct udevice *dev; + u8 addr, data[1]; + int err; + + err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev); + if (err) { + debug("%s: Cannot find PMIC I2C chip\n", __func__); + return err; + } + + addr = PMU_SUPPLYENE; + + err = dm_i2c_read(dev, addr, data, 1); + if (err) { + debug("failed to get PMU_SUPPLYENE\n"); + return err; + } + + data[0] &= ~PMU_SUPPLYENE_SYSINEN; + data[0] |= PMU_SUPPLYENE_EXITSLREQ; + + err = dm_i2c_write(dev, addr, data, 1); + if (err) { + debug("failed to set PMU_SUPPLYENE\n"); + return err; + } + if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) == NVBOOTTYPE_RECOVERY) printf("USB recovery mode\n"); |