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NET: designware: fix clock enable

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After commit ba1f966725 ("net: designware: add clock support")
we got NET broken on axs101 and axs103 platforms.

Some clock don't support gating so their clock drivers don't
implement .enable/.disable callbacks. In such case clk_enable
returns -ENOSYS.
Also some clock drivers implement .enable/.disable callbacks not for all
clock IDs and return -ENOSYS (or -ENOTSUPP) for others.

If we have such clock in 'clocks' list of designware ethernet controller
node we fail to probe designware ethernet.

Fix it.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
Eugeniy Paltsev 2018-02-06 17:12:09 +03:00 committed by Joe Hershberger
parent 8d6312032e
commit 1693a577be
1 changed files with 1 additions and 1 deletions
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2
drivers/net/designware.c
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@ -684,7 +684,7 @@ int designware_eth_probe(struct udevice *dev)
break;
err = clk_enable(&priv->clocks[i]);
if (err) {
if (err && err != -ENOSYS && err != -ENOTSUPP) {
pr_err("failed to enable clock %d\n", i);
clk_free(&priv->clocks[i]);
goto clk_err;