[U-Boot] [PATCH] NET: designware: fix clock enable

[Eugeniy Paltsev]

After commit ba1f966725223 "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 at synopsys.com>
---
 drivers/net/designware.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 6d53071..43670a7 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -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;
-- 
2.9.3