[PATCH v3 04/19] clk: imx: clk-imxrt1050: add set_parent() callback

[Giulio Benetti]

Need to add set_parent() callback to allow dts assigned-clock-parents to
work so let's add it accordingly.

Signed-off-by: Giulio Benetti <giulio.bene...@benettiengineering.com>
---
V1->V2:
* introduce patch to allow clock's parent setting in dts to work
---
 drivers/clk/imx/clk-imxrt1050.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/clk/imx/clk-imxrt1050.c b/drivers/clk/imx/clk-imxrt1050.c
index bb12644605..329f4580c5 100644
--- a/drivers/clk/imx/clk-imxrt1050.c
+++ b/drivers/clk/imx/clk-imxrt1050.c
@@ -71,11 +71,30 @@ static int imxrt1050_clk_enable(struct clk *clk)
        return __imxrt1050_clk_enable(clk, 1);
 }
 
+static int imxrt1050_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+       struct clk *c, *cp;
+       int ret;
+
+       debug("%s(#%lu), parent: %lu\n", __func__, clk->id, parent->id);
+
+       ret = clk_get_by_id(clk->id, &c);
+       if (ret)
+               return ret;
+
+       ret = clk_get_by_id(parent->id, &cp);
+       if (ret)
+               return ret;
+
+       return clk_set_parent(c, cp);
+}
+
 static struct clk_ops imxrt1050_clk_ops = {
        .set_rate = imxrt1050_clk_set_rate,
        .get_rate = imxrt1050_clk_get_rate,
        .enable = imxrt1050_clk_enable,
        .disable = imxrt1050_clk_disable,
+       .set_parent = imxrt1050_clk_set_parent,
 };
 
 static const char * const pll_ref_sels[] = {"osc", "dummy", };
-- 
2.20.1