diff options
Diffstat (limited to 'drivers/i2c/designware_i2c.c')
| -rw-r--r-- | drivers/i2c/designware_i2c.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c index 8cfed2194c5..419d021a314 100644 --- a/drivers/i2c/designware_i2c.c +++ b/drivers/i2c/designware_i2c.c @@ -9,6 +9,7 @@ #include <dm.h> #include <i2c.h> #include <pci.h> +#include <reset.h> #include <asm/io.h> #include "designware_i2c.h" @@ -34,6 +35,7 @@ static struct dw_scl_sda_cfg byt_config = { struct dw_i2c { struct i2c_regs *regs; struct dw_scl_sda_cfg *scl_sda_cfg; + struct reset_ctl reset_ctl; }; #ifdef CONFIG_SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED @@ -534,6 +536,7 @@ static int designware_i2c_probe_chip(struct udevice *bus, uint chip_addr, static int designware_i2c_probe(struct udevice *bus) { struct dw_i2c *priv = dev_get_priv(bus); + int ret; if (device_is_on_pci_bus(bus)) { #ifdef CONFIG_DM_PCI @@ -549,6 +552,13 @@ static int designware_i2c_probe(struct udevice *bus) priv->regs = (struct i2c_regs *)devfdt_get_addr_ptr(bus); } + ret = reset_get_by_name(bus, "i2c", &priv->reset_ctl); + if (ret) + pr_info("reset_get_by_name() failed: %d\n", ret); + + if (&priv->reset_ctl) + reset_deassert(&priv->reset_ctl); + __dw_i2c_init(priv->regs, 0, 0); return 0; |