ipq806x: update clk-qcom patches

Preparing for cpufreq driver switch to generic cpufreq-dt

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
master
Pavel Kubelun 8 years ago committed by John Crispin
parent bf7166e545
commit 8749fb7894
  1. 135
      target/linux/ipq806x/patches-4.4/001-add-API-register-brd-clks-bckwrds-cmptblt.patch
  2. 35
      target/linux/ipq806x/patches-4.4/002-make-reset-control-ops-const.patch
  3. 2
      target/linux/ipq806x/patches-4.4/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch
  4. 11
      target/linux/ipq806x/patches-4.4/140-clk-qcom-Add-support-for-Krait-clocks.patch
  5. 386
      target/linux/ipq806x/patches-4.4/175-add-regmap-mux-div.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,

@ -0,0 +1,35 @@
From add479eeb1a208a31ab913ae7c97506a81383079 Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Thu, 25 Feb 2016 10:45:12 +0100
Subject: clk: qcom: Make reset_control_ops const
The qcom_reset_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/qcom/reset.c | 2 +-
drivers/clk/qcom/reset.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/clk/qcom/reset.c
+++ b/drivers/clk/qcom/reset.c
@@ -55,7 +55,7 @@ qcom_reset_deassert(struct reset_control
return regmap_update_bits(rst->regmap, map->reg, mask, 0);
}
-struct reset_control_ops qcom_reset_ops = {
+const struct reset_control_ops qcom_reset_ops = {
.reset = qcom_reset,
.assert = qcom_reset_assert,
.deassert = qcom_reset_deassert,
--- a/drivers/clk/qcom/reset.h
+++ b/drivers/clk/qcom/reset.h
@@ -32,6 +32,6 @@ struct qcom_reset_controller {
#define to_qcom_reset_controller(r) \
container_of(r, struct qcom_reset_controller, rcdev);
-extern struct reset_control_ops qcom_reset_ops;
+extern const struct reset_control_ops qcom_reset_ops;
#endif

@ -86,7 +86,7 @@ I'd really like to get rid of __clk_hfpll_init_once() if possible...
+ u32 regval = hd->user_val; + u32 regval = hd->user_val;
+ unsigned long rate; + unsigned long rate;
+ +
+ rate = clk_hw_get_rate(hw->clk); + rate = clk_hw_get_rate(hw);
+ +
+ /* Pick the right VCO. */ + /* Pick the right VCO. */
+ if (hd->user_vco_mask && rate > hd->low_vco_max_rate) + if (hd->user_vco_mask && rate > hd->low_vco_max_rate)

@ -50,7 +50,7 @@ drivers/clk/qcom/Kconfig | 4 ++
clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o
--- /dev/null --- /dev/null
+++ b/drivers/clk/qcom/clk-krait.c +++ b/drivers/clk/qcom/clk-krait.c
@@ -0,0 +1,166 @@ @@ -0,0 +1,167 @@
+/* +/*
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ * + *
@ -128,18 +128,19 @@ drivers/clk/qcom/Kconfig | 4 ++
+ return clk_mux_get_parent(hw, sel, mux->parent_map, 0); + return clk_mux_get_parent(hw, sel, mux->parent_map, 0);
+} +}
+ +
+static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw) +static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw,
+ unsigned long *safe_freq)
+{ +{
+ int i; + int i;
+ struct krait_mux_clk *mux = to_krait_mux_clk(hw); + struct krait_mux_clk *mux = to_krait_mux_clk(hw);
+ int num_parents = clk_hw_get_num_parents(hw->clk); + int num_parents = clk_hw_get_num_parents(hw);
+ +
+ i = mux->safe_sel; + i = mux->safe_sel;
+ for (i = 0; i < num_parents; i++) + for (i = 0; i < num_parents; i++)
+ if (mux->safe_sel == mux->parent_map[i]) + if (mux->safe_sel == mux->parent_map[i])
+ break; + break;
+ +
+ return __clk_get_hw(clk_hw_get_parent_by_index(hw->clk, i)); + return clk_hw_get_parent_by_index(hw, i);
+} +}
+ +
+static int krait_mux_enable(struct clk_hw *hw) +static int krait_mux_enable(struct clk_hw *hw)
@ -172,7 +173,7 @@ drivers/clk/qcom/Kconfig | 4 ++
+static long krait_div2_round_rate(struct clk_hw *hw, unsigned long rate, +static long krait_div2_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate) + unsigned long *parent_rate)
+{ +{
+ *parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw->clk), rate * 2); + *parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), rate * 2);
+ return DIV_ROUND_UP(*parent_rate, 2); + return DIV_ROUND_UP(*parent_rate, 2);
+} +}
+ +

@ -0,0 +1,386 @@
From 7727b1cae43e9abac746ef016c3dbf50ee81a6d6 Mon Sep 17 00:00:00 2001
From: Georgi Djakov <georgi.djakov@linaro.org>
Date: Wed, 18 Mar 2015 17:23:29 +0200
Subject: clk: qcom: Add support for regmap mux-div clocks
Add support for hardware that support switching both parent clocks and the
divider at the same time. This avoids generating intermediate frequencies
from either the old parent clock and new divider or new parent clock and
old divider combinations.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
---
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/clk-regmap-mux-div.c | 288 ++++++++++++++++++++++++++++++++++
drivers/clk/qcom/clk-regmap-mux-div.h | 63 ++++++++
3 files changed, 352 insertions(+)
create mode 100644 drivers/clk/qcom/clk-regmap-mux-div.c
create mode 100644 drivers/clk/qcom/clk-regmap-mux-div.h
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -8,6 +8,7 @@ clk-qcom-y += clk-rcg2.o
clk-qcom-y += clk-branch.o
clk-qcom-y += clk-regmap-divider.o
clk-qcom-y += clk-regmap-mux.o
+clk-qcom-y += clk-regmap-mux-div.o
clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-krait.o
obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
clk-qcom-y += clk-hfpll.o
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-mux-div.c
@@ -0,0 +1,288 @@
+/*
+ * Copyright (c) 2015, Linaro Limited
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/regmap.h>
+
+#include "clk-regmap-mux-div.h"
+
+#define CMD_RCGR 0x0
+#define CMD_RCGR_UPDATE BIT(0)
+#define CMD_RCGR_DIRTY_CFG BIT(4)
+#define CMD_RCGR_ROOT_OFF BIT(31)
+#define CFG_RCGR 0x4
+
+static int __mux_div_update_config(struct clk_regmap_mux_div *md)
+{
+ int ret;
+ u32 val, count;
+ const char *name = clk_hw_get_name(&md->clkr.hw);
+
+ ret = regmap_update_bits(md->clkr.regmap, CMD_RCGR + md->reg_offset,
+ CMD_RCGR_UPDATE, CMD_RCGR_UPDATE);
+ if (ret)
+ return ret;
+
+ /* Wait for update to take effect */
+ for (count = 500; count > 0; count--) {
+ ret = regmap_read(md->clkr.regmap, CMD_RCGR + md->reg_offset,
+ &val);
+ if (ret)
+ return ret;
+ if (!(val & CMD_RCGR_UPDATE))
+ return 0;
+ udelay(1);
+ }
+
+ pr_err("%s: RCG did not update its configuration", name);
+ return -EBUSY;
+}
+
+static int __mux_div_set_src_div(struct clk_regmap_mux_div *md, u32 src_sel,
+ u32 src_div)
+{
+ int ret;
+ u32 val, mask;
+
+ val = (src_div << md->hid_shift) | (src_sel << md->src_shift);
+ mask = ((BIT(md->hid_width) - 1) << md->hid_shift) |
+ ((BIT(md->src_width) - 1) << md->src_shift);
+
+ ret = regmap_update_bits(md->clkr.regmap, CFG_RCGR + md->reg_offset,
+ mask, val);
+ if (ret)
+ return ret;
+
+ return __mux_div_update_config(md);
+}
+
+static void __mux_div_get_src_div(struct clk_regmap_mux_div *md, u32 *src_sel,
+ u32 *src_div)
+{
+ u32 val, div, src;
+ const char *name = clk_hw_get_name(&md->clkr.hw);
+
+ regmap_read(md->clkr.regmap, CMD_RCGR + md->reg_offset, &val);
+
+ if (val & CMD_RCGR_DIRTY_CFG) {
+ pr_err("%s: RCG configuration is pending\n", name);
+ return;
+ }
+
+ regmap_read(md->clkr.regmap, CFG_RCGR + md->reg_offset, &val);
+ src = (val >> md->src_shift);
+ src &= BIT(md->src_width) - 1;
+ *src_sel = src;
+
+ div = (val >> md->hid_shift);
+ div &= BIT(md->hid_width) - 1;
+ *src_div = div;
+}
+
+static int mux_div_enable(struct clk_hw *hw)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+
+ return __mux_div_set_src_div(md, md->src_sel, md->div);
+}
+
+static inline bool is_better_rate(unsigned long req, unsigned long best,
+ unsigned long new)
+{
+ return (req <= new && new < best) || (best < req && best < new);
+}
+
+static int mux_div_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+ unsigned int i, div, max_div;
+ unsigned long actual_rate, best_rate = 0;
+ unsigned long req_rate = req->rate;
+
+ for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
+ struct clk_hw *parent = clk_hw_get_parent_by_index(hw, i);
+ unsigned long parent_rate = clk_hw_get_rate(parent);
+
+ max_div = BIT(md->hid_width) - 1;
+ for (div = 1; div < max_div; div++) {
+ parent_rate = mult_frac(req_rate, div, 2);
+ parent_rate = clk_hw_round_rate(parent, parent_rate);
+ actual_rate = mult_frac(parent_rate, 2, div);
+
+ if (is_better_rate(req_rate, best_rate, actual_rate)) {
+ best_rate = actual_rate;
+ req->rate = best_rate;
+ req->best_parent_rate = parent_rate;
+ req->best_parent_hw = parent;
+ }
+
+ if (actual_rate < req_rate || best_rate <= req_rate)
+ break;
+ }
+ }
+
+ if (!best_rate)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int __mux_div_set_rate_and_parent(struct clk_hw *hw, unsigned long rate,
+ unsigned long prate, u32 src_sel)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+ int ret, i;
+ u32 div, max_div, best_src = 0, best_div = 0;
+ unsigned long actual_rate, best_rate = 0;
+
+ for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
+ struct clk_hw *parent = clk_hw_get_parent_by_index(hw, i);
+ unsigned long parent_rate = clk_hw_get_rate(parent);
+
+ max_div = BIT(md->hid_width) - 1;
+ for (div = 1; div < max_div; div++) {
+ parent_rate = mult_frac(rate, div, 2);
+ parent_rate = clk_hw_round_rate(parent, parent_rate);
+ actual_rate = mult_frac(parent_rate, 2, div);
+
+ if (is_better_rate(rate, best_rate, actual_rate)) {
+ best_rate = actual_rate;
+ best_src = md->parent_map[i].cfg;
+ best_div = div - 1;
+ }
+
+ if (actual_rate < rate || best_rate <= rate)
+ break;
+ }
+ }
+
+ ret = __mux_div_set_src_div(md, best_src, best_div);
+ if (!ret) {
+ md->div = best_div;
+ md->src_sel = best_src;
+ }
+
+ return ret;
+}
+
+static u8 mux_div_get_parent(struct clk_hw *hw)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+ const char *name = clk_hw_get_name(hw);
+ u32 i, div, src;
+
+ __mux_div_get_src_div(md, &src, &div);
+
+ for (i = 0; i < clk_hw_get_num_parents(hw); i++)
+ if (src == md->parent_map[i].cfg)
+ return i;
+
+ pr_err("%s: Can't find parent %d\n", name, src);
+ return 0;
+}
+
+static int mux_div_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+
+ return __mux_div_set_src_div(md, md->parent_map[index].cfg, md->div);
+}
+
+static int mux_div_set_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long prate)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+
+ return __mux_div_set_rate_and_parent(hw, rate, prate, md->src_sel);
+}
+
+static int mux_div_set_rate_and_parent(struct clk_hw *hw, unsigned long rate,
+ unsigned long prate, u8 index)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+
+ return __mux_div_set_rate_and_parent(hw, rate, prate,
+ md->parent_map[index].cfg);
+}
+
+static unsigned long mux_div_recalc_rate(struct clk_hw *hw, unsigned long prate)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+ u32 div, src;
+ int i, num_parents = clk_hw_get_num_parents(hw);
+ const char *name = clk_hw_get_name(hw);
+
+ __mux_div_get_src_div(md, &src, &div);
+ for (i = 0; i < num_parents; i++)
+ if (src == md->parent_map[i].cfg) {
+ struct clk_hw *p = clk_hw_get_parent_by_index(hw, i);
+ unsigned long parent_rate = clk_hw_get_rate(p);
+
+ return mult_frac(parent_rate, 2, div + 1);
+ }
+
+ pr_err("%s: Can't find parent %d\n", name, src);
+ return 0;
+}
+
+static struct clk_hw *mux_div_get_safe_parent(struct clk_hw *hw,
+ unsigned long *safe_freq)
+{
+ int i;
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+
+ if (md->safe_freq)
+ *safe_freq = md->safe_freq;
+
+ for (i = 0; i < clk_hw_get_num_parents(hw); i++)
+ if (md->safe_src == md->parent_map[i].cfg)
+ break;
+
+ return clk_hw_get_parent_by_index(hw, i);
+}
+
+static void mux_div_disable(struct clk_hw *hw)
+{
+ struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
+ struct clk_hw *parent;
+ u32 div;
+
+ if (!md->safe_freq || !md->safe_src)
+ return;
+
+ parent = mux_div_get_safe_parent(hw, &md->safe_freq);
+ div = divider_get_val(md->safe_freq, clk_get_rate(parent->clk), NULL,
+ md->hid_width, CLK_DIVIDER_ROUND_CLOSEST);
+ div = 2 * div + 1;
+
+ __mux_div_set_src_div(md, md->safe_src, div);
+}
+
+const struct clk_ops clk_regmap_mux_div_ops = {
+ .enable = mux_div_enable,
+ .disable = mux_div_disable,
+ .get_parent = mux_div_get_parent,
+ .set_parent = mux_div_set_parent,
+ .set_rate = mux_div_set_rate,
+ .set_rate_and_parent = mux_div_set_rate_and_parent,
+ .determine_rate = mux_div_determine_rate,
+ .recalc_rate = mux_div_recalc_rate,
+ .get_safe_parent = mux_div_get_safe_parent,
+};
+EXPORT_SYMBOL_GPL(clk_regmap_mux_div_ops);
--- /dev/null
+++ b/drivers/clk/qcom/clk-regmap-mux-div.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, Linaro Limited
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __QCOM_CLK_REGMAP_MUX_DIV_H__
+#define __QCOM_CLK_REGMAP_MUX_DIV_H__
+
+#include <linux/clk-provider.h>
+#include "clk-regmap.h"
+#include "clk-rcg.h"
+
+/**
+ * struct mux_div_clk - combined mux/divider clock
+ * @reg_offset: offset of the mux/divider register
+ * @hid_width: number of bits in half integer divider
+ * @hid_shift: lowest bit of hid value field
+ * @src_width: number of bits in source select
+ * @src_shift: lowest bit of source select field
+ * @div: the divider raw configuration value
+ * @src_sel: the mux index which will be used if the clock is enabled
+ * @safe_src: the safe source mux index for this clock
+ * @safe_freq: When switching rates from A to B, the mux div clock will
+ * instead switch from A -> safe_freq -> B. This allows the
+ * mux_div clock to change rates while enabled, even if this
+ * behavior is not supported by the parent clocks.
+ * If changing the rate of parent A also causes the rate of
+ * parent B to change, then safe_freq must be defined.
+ * safe_freq is expected to have a source clock which is always
+ * on and runs at only one rate.
+ * @parent_map: pointer to parent_map struct
+ * @clkr: handle between common and hardware-specific interfaces
+ */
+
+struct clk_regmap_mux_div {
+ u32 reg_offset;
+ u32 hid_width;
+ u32 hid_shift;
+ u32 src_width;
+ u32 src_shift;
+ u32 div;
+ u32 src_sel;
+ u32 safe_src;
+ unsigned long safe_freq;
+ const struct parent_map *parent_map;
+ struct clk_regmap clkr;
+};
+
+#define to_clk_regmap_mux_div(_hw) \
+ container_of(to_clk_regmap(_hw), struct clk_regmap_mux_div, clkr)
+
+extern const struct clk_ops clk_regmap_mux_div_ops;
+
+#endif
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