i2c: designware_i2c: Don't warn if no reset controller

At present if CONFIG_RESET is not enabled, this code shows a warning:

  designware_i2c_ofdata_to_platdata() i2c_designware_pci i2c2@16,0:
	Can't get reset: -524

Avoid this by checking if reset is supported, first.

Fixes: 622597dee4f ("i2c: designware: add reset ctrl to driver")
Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c
index 791f32e971c70605dd835e4918c102d800d6a572..c54989504ea24d4ff0d1b97d41afdf68c1306e64 100644 (file)
--- a/drivers/i2c/designware_i2c.c
+++ b/drivers/i2c/designware_i2c.c
@@ -774,10 +774,12 @@ int designware_i2c_ofdata_to_platdata(struct udevice *bus)
        dev_read_u32(bus, "i2c-sda-hold-time-ns", &priv->sda_hold_time_ns);
 
        ret = reset_get_bulk(bus, &priv->resets);
-       if (ret)
-               dev_warn(bus, "Can't get reset: %d\n", ret);
-       else
+       if (ret) {
+               if (ret != -ENOTSUPP)
+                       dev_warn(bus, "Can't get reset: %d\n", ret);
+       } else {
                reset_deassert_bulk(&priv->resets);
+       }
 
 #if CONFIG_IS_ENABLED(CLK)
        ret = clk_get_by_index(bus, 0, &priv->clk);