1 files changed, 74 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0053-clk-mediatek-enable-critical-clocks.patch b/target/linux/mediatek/patches-4.4/0053-clk-mediatek-enable-critical-clocks.patch
new file mode 100644
index 0000000..f22f786
--- /dev/null
+++ b/target/linux/mediatek/patches-4.4/0053-clk-mediatek-enable-critical-clocks.patch
@@ -0,0 +1,74 @@
+From c8fd103d6c07af5db47f061b70759b7c69169656 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 31 Mar 2016 06:46:51 +0200
+Subject: [PATCH 053/102] clk: mediatek: enable critical clocks
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/clk/mediatek/clk-mt2701.c |   22 ++++++++++++++++++++--
+ 1 file changed, 20 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/clk/mediatek/clk-mt2701.c b/drivers/clk/mediatek/clk-mt2701.c
+index 812b347..1634288 100644
+--- a/drivers/clk/mediatek/clk-mt2701.c
++++ b/drivers/clk/mediatek/clk-mt2701.c
+@@ -573,6 +573,20 @@ static const struct mtk_gate top_clks[] __initconst = {
+ 	GATE_TOP_AUD(CLK_TOP_AUD_I2S6_MCLK, "aud_i2s6_mclk", "aud_k6_src_div", 28),
+ };
+ 
++static struct clk_onecell_data *mt7623_top_clk_data __initdata;
++static struct clk_onecell_data *mt7623_pll_clk_data __initdata;
++
++static void __init mtk_clk_enable_critical(void)
++{
++	if (!mt7623_top_clk_data || !mt7623_pll_clk_data)
++		return;
++
++	clk_prepare_enable(mt7623_pll_clk_data->clks[CLK_APMIXED_ARMPLL]);
++	clk_prepare_enable(mt7623_top_clk_data->clks[CLK_TOP_MEM_SEL]);
++	clk_prepare_enable(mt7623_top_clk_data->clks[CLK_TOP_DDRPHYCFG_SEL]);
++	clk_prepare_enable(mt7623_top_clk_data->clks[CLK_TOP_RTC_SEL]);
++}
++
+ static void __init mtk_topckgen_init(struct device_node *node)
+ {
+ 	struct clk_onecell_data *clk_data;
+@@ -585,7 +599,7 @@ static void __init mtk_topckgen_init(struct device_node *node)
+ 		return;
+ 	}
+ 
+-	clk_data = mtk_alloc_clk_data(CLK_TOP_NR);
++	mt7623_top_clk_data = clk_data = mtk_alloc_clk_data(CLK_TOP_NR);
+ 
+ 	mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
+ 								clk_data);
+@@ -606,6 +620,8 @@ static void __init mtk_topckgen_init(struct device_node *node)
+ 	if (r)
+ 		pr_err("%s(): could not register clock provider: %d\n",
+ 			__func__, r);
++
++	mtk_clk_enable_critical();
+ }
+ CLK_OF_DECLARE(mtk_topckgen, "mediatek,mt2701-topckgen", mtk_topckgen_init);
+ 
+@@ -1202,7 +1218,7 @@ static void __init mtk_apmixedsys_init(struct device_node *node)
+ 	struct clk_onecell_data *clk_data;
+ 	int r;
+ 
+-	clk_data = mtk_alloc_clk_data(ARRAY_SIZE(apmixed_plls));
++	mt7623_pll_clk_data = clk_data = mtk_alloc_clk_data(ARRAY_SIZE(apmixed_plls));
+ 	if (!clk_data)
+ 		return;
+ 
+@@ -1213,6 +1229,8 @@ static void __init mtk_apmixedsys_init(struct device_node *node)
+ 	if (r)
+ 		pr_err("%s(): could not register clock provider: %d\n",
+ 			__func__, r);
++
++	mtk_clk_enable_critical();
+ }
+ CLK_OF_DECLARE(mtk_apmixedsys, "mediatek,mt2701-apmixedsys",
+ 							mtk_apmixedsys_init);
+-- 
+1.7.10.4
+