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

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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>
This commit is contained in:
Simon Glass 2020-11-09 07:12:49 -07:00 committed by Heiko Schocher
parent 5a13c0d134
commit 942012246a
1 changed files with 5 additions and 3 deletions
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8
drivers/i2c/designware_i2c.c
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@ -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);