From: Simon Glass <sjg@chromium.org>
Date: Mon, 9 Nov 2020 14:12:49 +0000 (-0700)
Subject: i2c: designware_i2c: Don't warn if no reset controller
X-Git-Url: http://git.dujemihanovic.xyz/%7B%7B%20%24style.Permalink%20%7D%7D?a=commitdiff_plain;h=942012246a7a1dea66869be7763d73f0565bdb7b;p=u-boot.git

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 791f32e971..c54989504e 100644
--- 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);