1 files changed, 0 insertions, 146 deletions
diff --git a/target/linux/ipq806x/patches/0126-clk-Add-safe-switch-hook.patch b/target/linux/ipq806x/patches/0126-clk-Add-safe-switch-hook.patch
deleted file mode 100644
index a78319ff52..0000000000
--- a/target/linux/ipq806x/patches/0126-clk-Add-safe-switch-hook.patch
+++ /dev/null
@@ -1,146 +0,0 @@
-From b7b3ceec506179d59e46e3a8ea8b370872cc7fcb Mon Sep 17 00:00:00 2001
-From: Stephen Boyd <sboyd@codeaurora.org>
-Date: Mon, 31 Mar 2014 16:52:29 -0700
-Subject: [PATCH 126/182] clk: Add safe switch hook
-
-Sometimes clocks can't accept their parent source turning off
-while the source is reprogrammed to a different rate. Most
-notably CPU clocks require a way to switch away from the current
-PLL they're running on, reprogram that PLL to a new rate, and
-then switch back to the PLL with the new rate once they're done.
-Add a hook that drivers can implement allowing them to return a
-'safe parent' that they can switch their parent to while the
-upstream source is reprogrammed to support this.
-
-Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
----
- drivers/clk/clk.c            |   53 ++++++++++++++++++++++++++++++++++++------
- include/linux/clk-private.h  |    2 ++
- include/linux/clk-provider.h |    1 +
- 3 files changed, 49 insertions(+), 7 deletions(-)
-
---- a/drivers/clk/clk.c
-+++ b/drivers/clk/clk.c
-@@ -1356,6 +1356,7 @@ static void clk_calc_subtree(struct clk
- 			     struct clk *new_parent, u8 p_index)
- {
- 	struct clk *child;
-+	struct clk *parent;
- 
- 	clk->new_rate = new_rate;
- 	clk->new_parent = new_parent;
-@@ -1365,6 +1366,17 @@ static void clk_calc_subtree(struct clk
- 	if (new_parent && new_parent != clk->parent)
- 		new_parent->new_child = clk;
- 
-+	if (clk->ops->get_safe_parent) {
-+		parent = clk->ops->get_safe_parent(clk->hw);
-+		if (parent) {
-+			p_index = clk_fetch_parent_index(clk, parent);
-+			clk->safe_parent_index = p_index;
-+			clk->safe_parent = parent;
-+		}
-+	} else {
-+		clk->safe_parent = NULL;
-+	}
-+
- 	hlist_for_each_entry(child, &clk->children, child_node) {
- 		if (child->ops->recalc_rate)
- 			child->new_rate = child->ops->recalc_rate(child->hw, new_rate);
-@@ -1450,14 +1462,42 @@ out:
- static struct clk *clk_propagate_rate_change(struct clk *clk, unsigned long event)
- {
- 	struct clk *child, *tmp_clk, *fail_clk = NULL;
-+	struct clk *old_parent;
- 	int ret = NOTIFY_DONE;
- 
--	if (clk->rate == clk->new_rate)
-+	if (clk->rate == clk->new_rate && event != POST_RATE_CHANGE)
- 		return NULL;
- 
-+	switch (event) {
-+	case PRE_RATE_CHANGE:
-+		if (clk->safe_parent)
-+			clk->ops->set_parent(clk->hw, clk->safe_parent_index);
-+		break;
-+	case POST_RATE_CHANGE:
-+		if (clk->safe_parent) {
-+			old_parent = __clk_set_parent_before(clk,
-+							     clk->new_parent);
-+			if (clk->ops->set_rate_and_parent) {
-+				clk->ops->set_rate_and_parent(clk->hw,
-+						clk->new_rate,
-+						clk->new_parent ?
-+						clk->new_parent->rate : 0,
-+						clk->new_parent_index);
-+			} else if (clk->ops->set_parent) {
-+				clk->ops->set_parent(clk->hw,
-+						clk->new_parent_index);
-+			}
-+			__clk_set_parent_after(clk, clk->new_parent,
-+					       old_parent);
-+		}
-+		break;
-+	}
-+
- 	if (clk->notifier_count) {
--		ret = __clk_notify(clk, event, clk->rate, clk->new_rate);
--		if (ret & NOTIFY_STOP_MASK)
-+		if (event != POST_RATE_CHANGE)
-+			ret = __clk_notify(clk, event, clk->rate,
-+					   clk->new_rate);
-+		if (ret & NOTIFY_STOP_MASK && event != POST_RATE_CHANGE)
- 			fail_clk = clk;
- 	}
- 
-@@ -1500,7 +1540,8 @@ static void clk_change_rate(struct clk *
- 	else if (clk->parent)
- 		best_parent_rate = clk->parent->rate;
- 
--	if (clk->new_parent && clk->new_parent != clk->parent) {
-+	if (clk->new_parent && clk->new_parent != clk->parent &&
-+			!clk->safe_parent) {
- 		old_parent = __clk_set_parent_before(clk, clk->new_parent);
- 
- 		if (clk->ops->set_rate_and_parent) {
-@@ -1523,9 +1564,6 @@ static void clk_change_rate(struct clk *
- 	else
- 		clk->rate = best_parent_rate;
- 
--	if (clk->notifier_count && old_rate != clk->rate)
--		__clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate);
--
- 	/*
- 	 * Use safe iteration, as change_rate can actually swap parents
- 	 * for certain clock types.
-@@ -1603,6 +1641,7 @@ int clk_set_rate(struct clk *clk, unsign
- 	/* change the rates */
- 	clk_change_rate(top);
- 
-+	clk_propagate_rate_change(top, POST_RATE_CHANGE);
- out:
- 	clk_prepare_unlock();
- 
---- a/include/linux/clk-private.h
-+++ b/include/linux/clk-private.h
-@@ -38,8 +38,10 @@ struct clk {
- 	struct clk		**parents;
- 	u8			num_parents;
- 	u8			new_parent_index;
-+	u8			safe_parent_index;
- 	unsigned long		rate;
- 	unsigned long		new_rate;
-+	struct clk		*safe_parent;
- 	struct clk		*new_parent;
- 	struct clk		*new_child;
- 	unsigned long		flags;
---- a/include/linux/clk-provider.h
-+++ b/include/linux/clk-provider.h
-@@ -157,6 +157,7 @@ struct clk_ops {
- 					struct clk **best_parent_clk);
- 	int		(*set_parent)(struct clk_hw *hw, u8 index);
- 	u8		(*get_parent)(struct clk_hw *hw);
-+	struct clk	*(*get_safe_parent)(struct clk_hw *hw);
- 	int		(*set_rate)(struct clk_hw *hw, unsigned long,
- 				    unsigned long);
- 	int		(*set_rate_and_parent)(struct clk_hw *hw,