[PATCH 1/3] bus: ti-sysc: Tolerate disabled CLK

When ti-sysc is probed in a limited SPL environment with disabled CLK
relying on the ROM setup for clocks, it should still be able to probe
successfully. Allow -ENOSYS as error during clk_get and clk_release.

The other calls to the clock framework in this driver will return 0 when
CLK is disabled.

Signed-off-by: Markus Schneider-Pargmann (TI) <[email protected]>
---
 drivers/bus/ti-sysc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 5f9f0a0d0b7b..d0395893519c 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -55,7 +55,7 @@ static int ti_sysc_get_one_clock(struct udevice *dev, enum ti_sysc_clocks index)
 
 	err = clk_get_by_name(dev, name, &priv->clocks[index]);
 	if (err) {
-		if (err == -ENODATA)
+		if (err == -ENODATA || err == -ENOSYS)
 			return 0;
 
 		dev_err(dev, "failed to get %s clock\n", name);
@@ -71,10 +71,12 @@ static int ti_sysc_put_clocks(struct udevice *dev)
 	int err;
 
 	err = clk_release_all(priv->clocks, priv->clocks_count);
-	if (err)
+	if (err && err != -ENOSYS) {
 		dev_err(dev, "failed to release all clocks\n");
+		return err;
+	}
 
-	return err;
+	return 0;
 }
 
 static int ti_sysc_get_clocks(struct udevice *dev)

-- 
2.55.0