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authorChen Zhong <chen.zhong@mediatek.com>2017-10-05 11:50:23 +0800
committerStephen Boyd <sboyd@codeaurora.org>2017-11-02 01:07:51 -0700
commitc955bf3998efa3355790a4d8c82874582f1bc727 (patch)
tree4df4e73b5bd0d3d4ba1405bdb20950b7b5070308 /drivers/clk/mediatek
parent808ecf4ad087f80c2eee99af67549f05d5315694 (diff)
clk: mediatek: add the option for determining PLL source clock
Since the previous setup always sets the PLL using crystal 26MHz, this doesn't always happen in every MediaTek platform. So the patch added flexibility for assigning extra member for determining the PLL source clock. Signed-off-by: Chen Zhong <chen.zhong@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/mediatek')
-rw-r--r--drivers/clk/mediatek/clk-mtk.h1
-rw-r--r--drivers/clk/mediatek/clk-pll.c5
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index f48df75cc901..f10250dcece4 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -218,6 +218,7 @@ struct mtk_pll_data {
uint32_t pcw_reg;
int pcw_shift;
const struct mtk_pll_div_table *div_table;
+ const char *parent_name;
};
void mtk_clk_register_plls(struct device_node *node,
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index 3c546bae6955..f54e4015b0b1 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -312,7 +312,10 @@ static struct clk *mtk_clk_register_pll(const struct mtk_pll_data *data,
init.name = data->name;
init.flags = (data->flags & PLL_AO) ? CLK_IS_CRITICAL : 0;
init.ops = &mtk_pll_ops;
- init.parent_names = &parent_name;
+ if (data->parent_name)
+ init.parent_names = &data->parent_name;
+ else
+ init.parent_names = &parent_name;
init.num_parents = 1;
clk = clk_register(NULL, &pll->hw);