[PATCH 04/24] clk: clk-mux: Resolve parent clock by name

[Marek Vasut]

Use clock-names property which is accessible via parent clock OF node
to look up the parent clock by name instead of depending on unreliable
global clock name to perform look up.

Signed-off-by: Marek Vasut <ma...@denx.de>
---
Cc: Christoph Niedermaier <cniederma...@dh-electronics.com>
Cc: Dong Aisheng <aisheng.d...@nxp.com>
Cc: Hou Zhiqiang <zhiqiang....@nxp.com>
Cc: Michael Trimarchi <mich...@amarulasolutions.com>
Cc: Peng Fan <peng....@nxp.com>
Cc: Tim Harvey <thar...@gateworks.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: u-boot@lists.denx.de
Cc: uboot-...@nxp.com
---
 drivers/clk/clk-mux.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index e2331a07840..d7411f8f282 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -113,6 +113,11 @@ int clk_mux_fetch_parent_index(struct clk *clk, struct clk 
*parent)
        for (i = 0; i < mux->num_parents; i++) {
                if (!strcmp(parent->dev->name, mux->parent_names[i]))
                        return i;
+               if (!strcmp(parent->dev->name,
+                           clk_resolve_parent_clk(clk->dev,
+                                                  mux->parent_names[i])))
+                       return i;
+
        }
 
        return -EINVAL;
@@ -207,7 +212,8 @@ struct clk *clk_register_mux(struct udevice *dev, const 
char *name,
         * for the corresponding clock (to do that define .set_parent() method).
         */
        ret = clk_register(clk, UBOOT_DM_CLK_CCF_MUX, name,
-                          parent_names[clk_mux_get_parent(clk)]);
+                          clk_resolve_parent_clk(dev,
+                               parent_names[clk_mux_get_parent(clk)]));
        if (ret) {
                kfree(mux);
                return ERR_PTR(ret);
-- 
2.47.2