diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/i2c/Makefile | 1 | ||||
| -rw-r--r-- | drivers/i2c/at91_i2c.c | 26 | ||||
| -rw-r--r-- | drivers/i2c/designware_i2c.c | 3 |
4 files changed, 32 insertions, 4 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 8ac1cc6a15..720e82d5de 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -145,6 +145,12 @@ config SYS_I2C_MXC channels and operating on standard mode upto 100 kbits/s and fast mode upto 400 kbits/s. +config SYS_I2C_OMAP24XX + bool "TI OMAP2+ I2C driver" + depends on ARCH_OMAP2PLUS + help + Add support for the OMAP2+ I2C driver. + config SYS_I2C_ROCKCHIP bool "Rockchip I2C driver" depends on DM_I2C diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 4bbf0c9f32..4f754191e2 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -31,7 +31,6 @@ obj-$(CONFIG_SYS_I2C_MVTWSI) += mvtwsi.o obj-$(CONFIG_SYS_I2C_MXC) += mxc_i2c.o obj-$(CONFIG_SYS_I2C_MXS) += mxs_i2c.o obj-$(CONFIG_SYS_I2C_OMAP24XX) += omap24xx_i2c.o -obj-$(CONFIG_SYS_I2C_OMAP34XX) += omap24xx_i2c.o obj-$(CONFIG_SYS_I2C_RCAR) += rcar_i2c.o obj-$(CONFIG_SYS_I2C_ROCKCHIP) += rk_i2c.o obj-$(CONFIG_SYS_I2C_S3C24X0) += s3c24x0_i2c.o exynos_hs_i2c.o diff --git a/drivers/i2c/at91_i2c.c b/drivers/i2c/at91_i2c.c index b7298cf774..d394044f80 100644 --- a/drivers/i2c/at91_i2c.c +++ b/drivers/i2c/at91_i2c.c @@ -199,7 +199,7 @@ static int at91_i2c_enable_clk(struct udevice *dev) return 0; } -static int at91_i2c_probe(struct udevice *dev, uint chip, uint chip_flags) +static int at91_i2c_probe_chip(struct udevice *dev, uint chip, uint chip_flags) { struct at91_i2c_bus *bus = dev_get_priv(dev); struct at91_i2c_regs *reg = bus->regs; @@ -254,11 +254,32 @@ static int at91_i2c_ofdata_to_platdata(struct udevice *dev) static const struct dm_i2c_ops at91_i2c_ops = { .xfer = at91_i2c_xfer, - .probe_chip = at91_i2c_probe, + .probe_chip = at91_i2c_probe_chip, .set_bus_speed = at91_i2c_set_bus_speed, .get_bus_speed = at91_i2c_get_bus_speed, }; +static int at91_i2c_probe(struct udevice *dev) +{ + struct at91_i2c_bus *bus = dev_get_priv(dev); + struct at91_i2c_regs *reg = bus->regs; + int ret; + + ret = at91_i2c_enable_clk(dev); + if (ret) + return ret; + + writel(TWI_CR_SWRST, ®->cr); + + at91_calc_i2c_clock(dev, bus->clock_frequency); + + writel(bus->cwgr_val, ®->cwgr); + writel(TWI_CR_MSEN, ®->cr); + writel(TWI_CR_SVDIS, ®->cr); + + return 0; +} + static const struct at91_i2c_pdata at91rm9200_config = { .clk_max_div = 5, .clk_offset = 3, @@ -315,6 +336,7 @@ U_BOOT_DRIVER(i2c_at91) = { .name = "i2c_at91", .id = UCLASS_I2C, .of_match = at91_i2c_ids, + .probe = at91_i2c_probe, .ofdata_to_platdata = at91_i2c_ofdata_to_platdata, .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), .priv_auto_alloc_size = sizeof(struct at91_i2c_bus), diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c index d4df35a69a..8cfed2194c 100644 --- a/drivers/i2c/designware_i2c.c +++ b/drivers/i2c/designware_i2c.c @@ -374,7 +374,8 @@ static void __dw_i2c_init(struct i2c_regs *i2c_base, int speed, int slaveaddr) /* Disable i2c */ dw_i2c_enable(i2c_base, false); - writel((IC_CON_SD | IC_CON_SPD_FS | IC_CON_MM), &i2c_base->ic_con); + writel(IC_CON_SD | IC_CON_RE | IC_CON_SPD_FS | IC_CON_MM, + &i2c_base->ic_con); writel(IC_RX_TL, &i2c_base->ic_rx_tl); writel(IC_TX_TL, &i2c_base->ic_tx_tl); writel(IC_STOP_DET, &i2c_base->ic_intr_mask); |