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clk: mediatek: add grandparent variable in mtk_find_parent_rate()

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Add grandparent device variable in mtk_find_parent_rate() to allow
the grandparent device being reused instead of calling
dev_get_parent(priv->parent) multiple times.

Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Link: https://patch.msgid.link/726ccc71593f6c224c13142a0bd4a9f6f0f81445.1776326933.git.weijie.gao@mediatek.com
Signed-off-by: David Lechner <dlechner@baylibre.com>
This commit is contained in:
Sam Shih 2026-04-16 16:23:05 +08:00 committed by David Lechner
parent ad3ea453d8
commit 374cb8a288
1 changed files with 11 additions and 8 deletions
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19
drivers/clk/mediatek/clk-mtk.c
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@ -217,17 +217,20 @@ static ulong mtk_find_parent_rate(struct mtk_clk_priv *priv, struct clk *clk,
case CLK_PARENT_APMIXED:
/* APMIXEDSYS can be parent or grandparent. */
if (dev_get_driver_ops(clk->dev) == &mtk_clk_apmixedsys_ops ||
dev_get_driver_ops(clk->dev) == &mtk_clk_fixed_pll_ops)
dev_get_driver_ops(clk->dev) == &mtk_clk_fixed_pll_ops) {
parent_dev = clk->dev;
else if (dev_get_driver_ops(priv->parent) == &mtk_clk_apmixedsys_ops ||
dev_get_driver_ops(priv->parent) == &mtk_clk_fixed_pll_ops)
} else if (dev_get_driver_ops(priv->parent) == &mtk_clk_apmixedsys_ops ||
dev_get_driver_ops(priv->parent) == &mtk_clk_fixed_pll_ops) {
parent_dev = priv->parent;
else if (dev_get_driver_ops(dev_get_parent(priv->parent)) == &mtk_clk_apmixedsys_ops ||
dev_get_driver_ops(dev_get_parent(priv->parent)) == &mtk_clk_fixed_pll_ops)
parent_dev = dev_get_parent(priv->parent);
else
return -EINVAL;
} else {
struct udevice *grandparent_dev = dev_get_parent(priv->parent);
if (dev_get_driver_ops(grandparent_dev) == &mtk_clk_apmixedsys_ops ||
dev_get_driver_ops(grandparent_dev) == &mtk_clk_fixed_pll_ops)
parent_dev = grandparent_dev;
else
return -EINVAL;
}
break;
case CLK_PARENT_TOPCKGEN:
if (dev_get_driver_ops(clk->dev) == &mtk_clk_topckgen_ops)