ipq806x: update clk-qcom patches

Preparing for cpufreq driver switch to generic cpufreq-dt

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>

1 files changed, 135 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-4.4/001-add-API-register-brd-clks-bckwrds-cmptblt.patch b/target/linux/ipq806x/patches-4.4/001-add-API-register-brd-clks-bckwrds-cmptblt.patch
new file mode 100644
index 0000000000..b9056e9618
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/001-add-API-register-brd-clks-bckwrds-cmptblt.patch
@@ -0,0 +1,135 @@
+From ee15faffef11309219aa87a24efc86f6dd13f7cb Mon Sep 17 00:00:00 2001
+From: Stephen Boyd <sboyd@codeaurora.org>
+Date: Mon, 26 Oct 2015 17:11:32 -0700
+Subject: clk: qcom: common: Add API to register board clocks backwards
+ compatibly
+
+We want to put the XO board clocks into the dt files, but we also
+need to be backwards compatible with an older dtb. Add an API to
+the common code to do this. This also makes a place for us to
+handle the case when the RPM clock driver is enabled and we don't
+want to register the fixed factor clock.
+
+Cc: Georgi Djakov <georgi.djakov@linaro.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+---
+ drivers/clk/qcom/common.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++
+ drivers/clk/qcom/common.h |  4 +++
+ 2 files changed, 91 insertions(+)
+
+--- a/drivers/clk/qcom/common.c
++++ b/drivers/clk/qcom/common.c
+@@ -17,6 +17,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/clk-provider.h>
+ #include <linux/reset-controller.h>
++#include <linux/of.h>
+ 
+ #include "common.h"
+ #include "clk-rcg.h"
+@@ -88,6 +89,92 @@ static void qcom_cc_gdsc_unregister(void
+ 	gdsc_unregister(data);
+ }
+ 
++/*
++ * Backwards compatibility with old DTs. Register a pass-through factor 1/1
++ * clock to translate 'path' clk into 'name' clk and regsiter the 'path'
++ * clk as a fixed rate clock if it isn't present.
++ */
++static int _qcom_cc_register_board_clk(struct device *dev, const char *path,
++				       const char *name, unsigned long rate,
++				       bool add_factor)
++{
++	struct device_node *node = NULL;
++	struct device_node *clocks_node;
++	struct clk_fixed_factor *factor;
++	struct clk_fixed_rate *fixed;
++	struct clk *clk;
++	struct clk_init_data init_data = { };
++
++	clocks_node = of_find_node_by_path("/clocks");
++	if (clocks_node)
++		node = of_find_node_by_name(clocks_node, path);
++	of_node_put(clocks_node);
++
++	if (!node) {
++		fixed = devm_kzalloc(dev, sizeof(*fixed), GFP_KERNEL);
++		if (!fixed)
++			return -EINVAL;
++
++		fixed->fixed_rate = rate;
++		fixed->hw.init = &init_data;
++
++		init_data.name = path;
++		init_data.flags = CLK_IS_ROOT;
++		init_data.ops = &clk_fixed_rate_ops;
++
++		clk = devm_clk_register(dev, &fixed->hw);
++		if (IS_ERR(clk))
++			return PTR_ERR(clk);
++	}
++	of_node_put(node);
++
++	if (add_factor) {
++		factor = devm_kzalloc(dev, sizeof(*factor), GFP_KERNEL);
++		if (!factor)
++			return -EINVAL;
++
++		factor->mult = factor->div = 1;
++		factor->hw.init = &init_data;
++
++		init_data.name = name;
++		init_data.parent_names = &path;
++		init_data.num_parents = 1;
++		init_data.flags = 0;
++		init_data.ops = &clk_fixed_factor_ops;
++
++		clk = devm_clk_register(dev, &factor->hw);
++		if (IS_ERR(clk))
++			return PTR_ERR(clk);
++	}
++
++	return 0;
++}
++
++int qcom_cc_register_board_clk(struct device *dev, const char *path,
++			       const char *name, unsigned long rate)
++{
++	bool add_factor = true;
++	struct device_node *node;
++
++	/* The RPM clock driver will add the factor clock if present */
++	if (IS_ENABLED(CONFIG_QCOM_RPMCC)) {
++		node = of_find_compatible_node(NULL, NULL, "qcom,rpmcc");
++		if (of_device_is_available(node))
++			add_factor = false;
++		of_node_put(node);
++	}
++
++	return _qcom_cc_register_board_clk(dev, path, name, rate, add_factor);
++}
++EXPORT_SYMBOL_GPL(qcom_cc_register_board_clk);
++
++int qcom_cc_register_sleep_clk(struct device *dev)
++{
++	return _qcom_cc_register_board_clk(dev, "sleep_clk", "sleep_clk_src",
++					   32768, true);
++}
++EXPORT_SYMBOL_GPL(qcom_cc_register_sleep_clk);
++
+ int qcom_cc_really_probe(struct platform_device *pdev,
+ 			 const struct qcom_cc_desc *desc, struct regmap *regmap)
+ {
+--- a/drivers/clk/qcom/common.h
++++ b/drivers/clk/qcom/common.h
+@@ -37,6 +37,10 @@ extern const struct freq_tbl *qcom_find_
+ extern int qcom_find_src_index(struct clk_hw *hw, const struct parent_map *map,
+ 			       u8 src);
+ 
++extern int qcom_cc_register_board_clk(struct device *dev, const char *path,
++				      const char *name, unsigned long rate);
++extern int qcom_cc_register_sleep_clk(struct device *dev);
++
+ extern struct regmap *qcom_cc_map(struct platform_device *pdev,
+ 				  const struct qcom_cc_desc *desc);
+ extern int qcom_cc_really_probe(struct platform_device *pdev,