The bus_i2c_init() is called before relocation and will assgin value to a static variable. If U-Boot is then still running in a flash device, it's theoretically not allowed to write data to flash without an erasing operation. For i.MX platforms, the U-Boot is always running in DDR.
Actually it causes asynchronous error when the ARM64 system error report is enabled and the flash write protect is set.
Signed-off-by: Gong Qianyu Qianyu.Gong@freescale.com --- drivers/i2c/mxc_i2c.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index fa4c82f..4dddb83 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -581,8 +581,11 @@ void bus_i2c_init(int index, int speed, int unused, return; }
+#if defined(CONFIG_MX51) || defined(CONFIG_MX53) || \ + defined(CONFIG_MX6) || defined(CONFIG_MX7) mxc_i2c_buses[index].idle_bus_fn = idle_bus_fn; mxc_i2c_buses[index].idle_bus_data = idle_bus_data; +#endif
ret = enable_i2c_clk(1, index); if (ret < 0) {