diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/mvtwsi.c | 11 | ||||
| -rw-r--r-- | drivers/i2c/rk_i2c.c | 6 |
2 files changed, 14 insertions, 3 deletions
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index 74ac0a4aa7..0a2dafcec6 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -271,6 +271,17 @@ static int twsi_wait(struct mvtwsi_registers *twsi, int expected_status, do { control = readl(&twsi->control); if (control & MVTWSI_CONTROL_IFLG) { + /* + * On Armada 38x it seems that the controller works as + * if it first set the MVTWSI_CONTROL_IFLAG in the + * control register and only after that it changed the + * status register. + * This sometimes caused weird bugs which only appeared + * on selected I2C speeds and even then only sometimes. + * We therefore add here a simple ndealy(100), which + * seems to fix this weird bug. + */ + ndelay(100); status = readl(&twsi->status); if (status == expected_status) return 0; diff --git a/drivers/i2c/rk_i2c.c b/drivers/i2c/rk_i2c.c index f9a5796b96..cdd94bb05a 100644 --- a/drivers/i2c/rk_i2c.c +++ b/drivers/i2c/rk_i2c.c @@ -12,9 +12,9 @@ #include <errno.h> #include <i2c.h> #include <asm/io.h> -#include <asm/arch/clock.h> -#include <asm/arch/i2c.h> -#include <asm/arch/periph.h> +#include <asm/arch-rockchip/clock.h> +#include <asm/arch-rockchip/i2c.h> +#include <asm/arch-rockchip/periph.h> #include <dm/pinctrl.h> #include <linux/sizes.h> |