[PATCHv7 01/36] CLK: TI: Add DPLL clock support
Tero Kristo
t-kristo at ti.com
Wed Sep 25 04:48:07 EDT 2013
The OMAP clock driver now supports DPLL clock type. This patch also
adds support for DT DPLL nodes.
Signed-off-by: Tero Kristo <t-kristo at ti.com>
---
.../devicetree/bindings/clock/ti/dpll.txt | 80 +++
arch/arm/mach-omap2/clock.h | 144 +----
arch/arm/mach-omap2/clock3xxx.h | 2 -
drivers/clk/Makefile | 1 +
drivers/clk/ti/Makefile | 3 +
drivers/clk/ti/dpll.c | 580 ++++++++++++++++++++
include/linux/clk/ti.h | 164 ++++++
7 files changed, 829 insertions(+), 145 deletions(-)
create mode 100644 Documentation/devicetree/bindings/clock/ti/dpll.txt
create mode 100644 drivers/clk/ti/Makefile
create mode 100644 drivers/clk/ti/dpll.c
create mode 100644 include/linux/clk/ti.h
diff --git a/Documentation/devicetree/bindings/clock/ti/dpll.txt b/Documentation/devicetree/bindings/clock/ti/dpll.txt
new file mode 100644
index 0000000..993879f
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ti/dpll.txt
@@ -0,0 +1,80 @@
+Binding for Texas Instruments DPLL clock.
+
+This binding uses the common clock binding[1]. It assumes a
+register-mapped DPLL with usually two selectable input clocks
+(reference clock and bypass clock), with digital phase locked
+loop logic for multiplying the input clock to a desired output
+clock. This clock also typically supports different operation
+modes (locked, low power stop etc.) This binding has several
+sub-types, which effectively result in slightly different setup
+for the actual DPLL clock.
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be one of:
+ "ti,omap3-dpll-clock",
+ "ti,omap3-dpll-core-clock",
+ "ti,omap3-dpll-per-clock",
+ "ti,omap3-dpll-per-j-type-clock",
+ "ti,omap4-dpll-clock",
+ "ti,omap4-dpll-x2-clock",
+ "ti,omap4-dpll-core-clock",
+ "ti,omap4-dpll-m4xen-clock",
+ "ti,omap4-dpll-j-type-clock",
+ "ti,am3-dpll-no-gate-clock",
+ "ti,am3-dpll-no-gate-j-type-clock",
+ "ti,am3-dpll-clock",
+ "ti,am3-dpll-core-clock",
+ "ti,am3-dpll-x2-clock",
+
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : link phandles of parent clocks, first entry lists reference clock
+ and second entry bypass clock
+- reg : address and length of the register set for controlling the DPLL.
+ Registers are listed in following order:
+ "control" - contains the control register base address
+ "idlest" - contains the idle status register base address
+ "autoidle" - contains the autoidle register base address
+ "mult-div1" - contains the multiplier / divider register base address
+ ti,am3-* dpll types list the registers in the same order, except "autoidle"
+ register is left out as this hardware does not have it, e.g.:
+ reg = <0x4000 0x4>, <0x5000 0x4>, <0x6000 0x4>;
+ results in following register map:
+ 0x4000 - control
+ 0x5000 - idlest
+ 0x6000 - mult-div1
+
+Optional properties:
+- DPLL mode setting - defining any one or more of the following overrides
+ default setting.
+ - ti,low-power-stop : DPLL supports low power stop mode, gating output
+ - ti,low-power-bypass : DPLL output matches rate of parent bypass clock
+ - ti,lock : DPLL locks in programmed rate
+
+Examples:
+ dpll_core_ck: dpll_core_ck at 44e00490 {
+ #clock-cells = <0>;
+ compatible = "ti,omap4-dpll-core-clock";
+ clocks = <&sys_clkin_ck>, <&sys_clkin_ck>;
+ reg = <0x44e00490 0x4>, <0x44e0045c 0x4>, <0x0 0x4>,
+ <0x44e00468 0x4>;
+ };
+
+ dpll2_ck: dpll2_ck at 48004004 {
+ #clock-cells = <0>;
+ compatible = "ti,omap3-dpll-clock";
+ clocks = <&sys_ck>, <&dpll2_fck>;
+ ti,low-power-stop;
+ ti,low-power-bypass;
+ ti,lock;
+ reg = <0x48004004 0x4>, <0x48004024 0x4>, <0x48004034 0x4>,
+ <0x48004040 0x4>;
+ };
+
+ dpll_core_ck: dpll_core_ck at 44e00490 {
+ #clock-cells = <0>;
+ compatible = "ti,am3-dpll-core-clock";
+ clocks = <&sys_clkin_ck>, <&sys_clkin_ck>;
+ reg = <0x44e00490 0x4>, <0x44e0045c 0x4>, <0x44e00468 0x4>;
+ };
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 7aa32cd..079536a 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -21,6 +21,7 @@
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
+#include <linux/clk/ti.h>
struct omap_clk {
u16 cpu;
@@ -178,83 +179,6 @@ struct clksel {
const struct clksel_rate *rates;
};
-/**
- * struct dpll_data - DPLL registers and integration data
- * @mult_div1_reg: register containing the DPLL M and N bitfields
- * @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
- * @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
- * @clk_bypass: struct clk pointer to the clock's bypass clock input
- * @clk_ref: struct clk pointer to the clock's reference clock input
- * @control_reg: register containing the DPLL mode bitfield
- * @enable_mask: mask of the DPLL mode bitfield in @control_reg
- * @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
- * @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
- * @last_rounded_m4xen: cache of the last M4X result of
- * omap4_dpll_regm4xen_round_rate()
- * @last_rounded_lpmode: cache of the last lpmode result of
- * omap4_dpll_lpmode_recalc()
- * @max_multiplier: maximum valid non-bypass multiplier value (actual)
- * @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
- * @min_divider: minimum valid non-bypass divider value (actual)
- * @max_divider: maximum valid non-bypass divider value (actual)
- * @modes: possible values of @enable_mask
- * @autoidle_reg: register containing the DPLL autoidle mode bitfield
- * @idlest_reg: register containing the DPLL idle status bitfield
- * @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
- * @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
- * @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
- * @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
- * @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_reg
- * @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
- * @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
- * @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
- * @flags: DPLL type/features (see below)
- *
- * Possible values for @flags:
- * DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
- *
- * @freqsel_mask is only used on the OMAP34xx family and AM35xx.
- *
- * XXX Some DPLLs have multiple bypass inputs, so it's not technically
- * correct to only have one @clk_bypass pointer.
- *
- * XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
- * @last_rounded_n) should be separated from the runtime-fixed fields
- * and placed into a different structure, so that the runtime-fixed data
- * can be placed into read-only space.
- */
-struct dpll_data {
- void __iomem *mult_div1_reg;
- u32 mult_mask;
- u32 div1_mask;
- struct clk *clk_bypass;
- struct clk *clk_ref;
- void __iomem *control_reg;
- u32 enable_mask;
- unsigned long last_rounded_rate;
- u16 last_rounded_m;
- u8 last_rounded_m4xen;
- u8 last_rounded_lpmode;
- u16 max_multiplier;
- u8 last_rounded_n;
- u8 min_divider;
- u16 max_divider;
- u8 modes;
- void __iomem *autoidle_reg;
- void __iomem *idlest_reg;
- u32 autoidle_mask;
- u32 freqsel_mask;
- u32 idlest_mask;
- u32 dco_mask;
- u32 sddiv_mask;
- u32 lpmode_mask;
- u32 m4xen_mask;
- u8 auto_recal_bit;
- u8 recal_en_bit;
- u8 recal_st_bit;
- u8 flags;
-};
-
/*
* struct clk.flags possibilities
*
@@ -274,45 +198,6 @@ struct dpll_data {
#define INVERT_ENABLE (1 << 4) /* 0 enables, 1 disables */
#define CLOCK_CLKOUTX2 (1 << 5)
-/**
- * struct clk_hw_omap - OMAP struct clk
- * @node: list_head connecting this clock into the full clock list
- * @enable_reg: register to write to enable the clock (see @enable_bit)
- * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
- * @flags: see "struct clk.flags possibilities" above
- * @clksel_reg: for clksel clks, register va containing src/divisor select
- * @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
- * @clksel: for clksel clks, pointer to struct clksel for this clock
- * @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
- * @clkdm_name: clockdomain name that this clock is contained in
- * @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
- * @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
- * @src_offset: bitshift for source selection bitfield (OMAP1 only)
- *
- * XXX @rate_offset, @src_offset should probably be removed and OMAP1
- * clock code converted to use clksel.
- *
- */
-
-struct clk_hw_omap_ops;
-
-struct clk_hw_omap {
- struct clk_hw hw;
- struct list_head node;
- unsigned long fixed_rate;
- u8 fixed_div;
- void __iomem *enable_reg;
- u8 enable_bit;
- u8 flags;
- void __iomem *clksel_reg;
- u32 clksel_mask;
- const struct clksel *clksel;
- struct dpll_data *dpll_data;
- const char *clkdm_name;
- struct clockdomain *clkdm;
- const struct clk_hw_omap_ops *ops;
-};
-
struct clk_hw_omap_ops {
void (*find_idlest)(struct clk_hw_omap *oclk,
void __iomem **idlest_reg,
@@ -348,36 +233,13 @@ unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
#define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
#define OMAP4XXX_EN_DPLL_LOCKED 0x7
-/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
-#define DPLL_LOW_POWER_STOP 0x1
-#define DPLL_LOW_POWER_BYPASS 0x5
-#define DPLL_LOCKED 0x7
-
-/* DPLL Type and DCO Selection Flags */
-#define DPLL_J_TYPE 0x1
-
-long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
- unsigned long *parent_rate);
-unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
-int omap3_noncore_dpll_enable(struct clk_hw *hw);
-void omap3_noncore_dpll_disable(struct clk_hw *hw);
-int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long parent_rate);
u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk);
void omap3_dpll_allow_idle(struct clk_hw_omap *clk);
void omap3_dpll_deny_idle(struct clk_hw_omap *clk);
-unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
- unsigned long parent_rate);
int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk);
void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk);
void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk);
-unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
- unsigned long parent_rate);
-long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
- unsigned long target_rate,
- unsigned long *parent_rate);
-void omap2_init_clk_clkdm(struct clk_hw *clk);
void __init omap2_clk_disable_clkdm_control(void);
/* clkt_clksel.c public functions */
@@ -396,7 +258,6 @@ int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
-u8 omap2_init_dpll_parent(struct clk_hw *hw);
unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
int omap2_dflt_clk_enable(struct clk_hw *hw);
@@ -408,7 +269,6 @@ void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
void __iomem **idlest_reg,
u8 *idlest_bit, u8 *idlest_val);
-void omap2_init_clk_hw_omap_clocks(struct clk *clk);
int omap2_clk_enable_autoidle_all(void);
int omap2_clk_disable_autoidle_all(void);
void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks);
@@ -431,10 +291,8 @@ extern const struct clksel_rate gfx_l3_rates[];
extern const struct clksel_rate dsp_ick_rates[];
extern struct clk dummy_ck;
-extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
extern const struct clk_hw_omap_ops clkhwops_wait;
-extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
extern const struct clk_hw_omap_ops clkhwops_iclk;
extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait;
diff --git a/arch/arm/mach-omap2/clock3xxx.h b/arch/arm/mach-omap2/clock3xxx.h
index 8cd4b0a..dab90e2 100644
--- a/arch/arm/mach-omap2/clock3xxx.h
+++ b/arch/arm/mach-omap2/clock3xxx.h
@@ -9,8 +9,6 @@
#define __ARCH_ARM_MACH_OMAP2_CLOCK3XXX_H
int omap3xxx_clk_init(void);
-int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
- unsigned long parent_rate);
int omap3_core_dpll_m2_set_rate(struct clk_hw *clk, unsigned long rate,
unsigned long parent_rate);
void omap3_clk_lock_dpll5(void);
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 7b11106..981e14ac 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_ARCH_VT8500) += clk-vt8500.o
obj-$(CONFIG_ARCH_ZYNQ) += zynq/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_PLAT_SAMSUNG) += samsung/
+obj-$(CONFIG_ARCH_OMAP) += ti/
obj-$(CONFIG_X86) += x86/
diff --git a/drivers/clk/ti/Makefile b/drivers/clk/ti/Makefile
new file mode 100644
index 0000000..93177987
--- /dev/null
+++ b/drivers/clk/ti/Makefile
@@ -0,0 +1,3 @@
+ifneq ($(CONFIG_OF),)
+obj-y += dpll.o
+endif
diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c
new file mode 100644
index 0000000..f75864e
--- /dev/null
+++ b/drivers/clk/ti/dpll.c
@@ -0,0 +1,580 @@
+/*
+ * OMAP DPLL clock support
+ *
+ * Copyright (C) 2013 Texas Instruments, Inc.
+ *
+ * Tero Kristo <t-kristo at ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/clk/ti.h>
+
+#define DPLL_HAS_AUTOIDLE 0x1
+
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
+ defined(CONFIG_SOC_DRA7XX)
+static const struct clk_ops dpll_m4xen_ck_ops = {
+ .enable = &omap3_noncore_dpll_enable,
+ .disable = &omap3_noncore_dpll_disable,
+ .recalc_rate = &omap4_dpll_regm4xen_recalc,
+ .round_rate = &omap4_dpll_regm4xen_round_rate,
+ .set_rate = &omap3_noncore_dpll_set_rate,
+ .get_parent = &omap2_init_dpll_parent,
+};
+#endif
+
+static const struct clk_ops dpll_core_ck_ops = {
+ .recalc_rate = &omap3_dpll_recalc,
+ .get_parent = &omap2_init_dpll_parent,
+};
+
+#ifdef CONFIG_ARCH_OMAP3
+static const struct clk_ops omap3_dpll_core_ck_ops = {
+ .get_parent = &omap2_init_dpll_parent,
+ .recalc_rate = &omap3_dpll_recalc,
+ .round_rate = &omap2_dpll_round_rate,
+};
+#endif
+
+static const struct clk_ops dpll_ck_ops = {
+ .enable = &omap3_noncore_dpll_enable,
+ .disable = &omap3_noncore_dpll_disable,
+ .recalc_rate = &omap3_dpll_recalc,
+ .round_rate = &omap2_dpll_round_rate,
+ .set_rate = &omap3_noncore_dpll_set_rate,
+ .get_parent = &omap2_init_dpll_parent,
+};
+
+static const struct clk_ops dpll_no_gate_ck_ops = {
+ .recalc_rate = &omap3_dpll_recalc,
+ .get_parent = &omap2_init_dpll_parent,
+ .round_rate = &omap2_dpll_round_rate,
+ .set_rate = &omap3_noncore_dpll_set_rate,
+};
+
+#ifdef CONFIG_ARCH_OMAP3
+static const struct clk_ops omap3_dpll_ck_ops = {
+ .enable = &omap3_noncore_dpll_enable,
+ .disable = &omap3_noncore_dpll_disable,
+ .get_parent = &omap2_init_dpll_parent,
+ .recalc_rate = &omap3_dpll_recalc,
+ .set_rate = &omap3_noncore_dpll_set_rate,
+ .round_rate = &omap2_dpll_round_rate,
+};
+
+static const struct clk_ops omap3_dpll_per_ck_ops = {
+ .enable = &omap3_noncore_dpll_enable,
+ .disable = &omap3_noncore_dpll_disable,
+ .get_parent = &omap2_init_dpll_parent,
+ .recalc_rate = &omap3_dpll_recalc,
+ .set_rate = &omap3_dpll4_set_rate,
+ .round_rate = &omap2_dpll_round_rate,
+};
+#endif
+
+static const struct clk_ops dpll_x2_ck_ops = {
+ .recalc_rate = &omap3_clkoutx2_recalc,
+};
+
+/**
+ * ti_clk_register_dpll() - Registers the DPLL clock
+ * @dev: device pointer (if any)
+ * @name: Name of the clock node
+ * @parent_names: list of parent names
+ * @num_parents: num of parents in parent_names
+ * @flags: init flags
+ * @dpll_data: DPLL data
+ * @ops: ops for DPLL
+ */
+static struct clk *ti_clk_register_dpll(struct device *dev, const char *name,
+ const char **parent_names,
+ int num_parents, unsigned long flags,
+ struct dpll_data *dpll_data,
+ const struct clk_ops *ops)
+{
+ struct clk *clk;
+ struct clk_init_data init = { NULL };
+ struct clk_hw_omap *clk_hw;
+
+ /* allocate the divider */
+ clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
+ if (!clk_hw) {
+ pr_err("%s: could not allocate clk_hw_omap\n", __func__);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ clk_hw->dpll_data = dpll_data;
+ clk_hw->ops = &clkhwops_omap3_dpll;
+ clk_hw->hw.init = &init;
+
+ init.name = name;
+ init.ops = ops;
+ init.flags = flags;
+ init.parent_names = parent_names;
+ init.num_parents = num_parents;
+
+ /* register the clock */
+ clk = clk_register(dev, &clk_hw->hw);
+
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed clk_register for %s (%ld)\n", __func__, name,
+ PTR_ERR(clk));
+ kfree(clk_hw);
+ } else {
+ omap2_init_clk_hw_omap_clocks(clk);
+ }
+
+ return clk;
+}
+
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
+ defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM33XX)
+/**
+ * ti_clk_register_dpll_x2() - Registers the DPLLx2 clock
+ * @dev: device pointer (if any)
+ * @name: Name of the clock node
+ * @parent_name: parent name (only 1 parent)
+ * @reg: register address for DPLL
+ * @ops: ops for DPLL
+ */
+static struct clk *ti_clk_register_dpll_x2(struct device *dev, const char *name,
+ const char *parent_name,
+ void __iomem *reg,
+ const struct clk_ops *ops,
+ const struct clk_hw_omap_ops *hw_ops)
+{
+ struct clk *clk;
+ struct clk_init_data init = { NULL };
+ struct clk_hw_omap *clk_hw;
+
+ if (!parent_name) {
+ pr_err("%s: dpll_x2 must have parent\n", __func__);
+ return ERR_PTR(-EINVAL);
+ }
+
+ clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
+ if (!clk_hw) {
+ pr_err("%s: could not allocate clk_hw_omap\n", __func__);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ clk_hw->ops = hw_ops;
+ clk_hw->clksel_reg = reg;
+ clk_hw->hw.init = &init;
+
+ init.name = name;
+ init.ops = ops;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ /* register the clock */
+ clk = clk_register(dev, &clk_hw->hw);
+
+ if (IS_ERR(clk))
+ kfree(clk_hw);
+ else
+ omap2_init_clk_hw_omap_clocks(clk);
+
+ return clk;
+}
+#endif
+
+/**
+ * of_ti_dpll_setup() - Setup function for OMAP DPLL clocks
+ *
+ * @node: device node containing the DPLL info
+ * @ops: ops for the DPLL
+ * @ddt: DPLL data template to use
+ * @init_flags: flags for controlling init types
+ */
+static void __init of_ti_dpll_setup(struct device_node *node,
+ const struct clk_ops *ops,
+ const struct dpll_data *ddt,
+ u8 init_flags)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ int num_parents;
+ const char **parent_names = NULL;
+ u8 dpll_flags = 0;
+ struct dpll_data *dd;
+ int i;
+ u8 dpll_mode = 0;
+
+ dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+ if (!dd) {
+ pr_err("%s: could not allocate dpll_data\n", __func__);
+ return;
+ }
+
+ memcpy(dd, ddt, sizeof(*dd));
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ num_parents = of_clk_get_parent_count(node);
+ if (num_parents < 1) {
+ pr_err("%s: omap dpll %s must have parent(s)\n",
+ __func__, node->name);
+ goto cleanup;
+ }
+
+ parent_names = kzalloc(sizeof(char *) * num_parents, GFP_KERNEL);
+
+ for (i = 0; i < num_parents; i++)
+ parent_names[i] = of_clk_get_parent_name(node, i);
+
+ dd->clk_ref = of_clk_get(node, 0);
+ dd->clk_bypass = of_clk_get(node, 1);
+
+ if (IS_ERR(dd->clk_ref)) {
+ pr_err("%s: ti,clk-ref for %s not found\n", __func__,
+ clk_name);
+ goto cleanup;
+ }
+
+ if (IS_ERR(dd->clk_bypass)) {
+ pr_err("%s: ti,clk-bypass for %s not found\n", __func__,
+ clk_name);
+ goto cleanup;
+ }
+
+ if (init_flags & DPLL_HAS_AUTOIDLE) {
+ dd->control_reg = of_iomap(node, 0);
+ dd->idlest_reg = of_iomap(node, 1);
+ dd->autoidle_reg = of_iomap(node, 2);
+ dd->mult_div1_reg = of_iomap(node, 3);
+ } else {
+ dd->control_reg = of_iomap(node, 0);
+ dd->idlest_reg = of_iomap(node, 1);
+ dd->mult_div1_reg = of_iomap(node, 2);
+ }
+
+ if (of_property_read_bool(node, "ti,low-power-stop"))
+ dpll_mode |= 1 << DPLL_LOW_POWER_STOP;
+
+ if (of_property_read_bool(node, "ti,low-power-bypass"))
+ dpll_mode |= 1 << DPLL_LOW_POWER_STOP;
+
+ if (of_property_read_bool(node, "ti,lock"))
+ dpll_mode |= 1 << DPLL_LOCKED;
+
+ if (dpll_mode)
+ dd->modes = dpll_mode;
+
+ clk = ti_clk_register_dpll(NULL, clk_name, parent_names, num_parents,
+ dpll_flags, dd, ops);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ return;
+
+cleanup:
+ kfree(dd);
+ kfree(parent_names);
+ return;
+}
+
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
+ defined(CONFIG_SOC_DRA7XX)
+static void __init of_ti_omap4_dpll_x2_setup(struct device_node *node)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ void __iomem *reg;
+ const char *parent_name;
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ reg = of_iomap(node, 0);
+
+ clk = ti_clk_register_dpll_x2(NULL, clk_name, parent_name,
+ reg, &dpll_x2_ck_ops, &clkhwops_omap4_dpllmx);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+CLK_OF_DECLARE(ti_omap4_dpll_x2_clock, "ti,omap4-dpll-x2-clock",
+ of_ti_omap4_dpll_x2_setup);
+#endif
+
+#ifdef CONFIG_SOC_AM33XX
+static void __init of_ti_am3_dpll_x2_setup(struct device_node *node)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ void __iomem *reg;
+ const char *parent_name;
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ reg = of_iomap(node, 0);
+
+ clk = ti_clk_register_dpll_x2(NULL, clk_name, parent_name,
+ reg, &dpll_x2_ck_ops, NULL);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+CLK_OF_DECLARE(ti_am3_dpll_x2_clock, "ti,am3-dpll-x2-clock",
+ of_ti_am3_dpll_x2_setup);
+#endif
+
+#ifdef CONFIG_ARCH_OMAP3
+static void __init of_ti_omap3_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .freqsel_mask = 0xf0,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &omap3_dpll_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap3_dpll_clock, "ti,omap3-dpll-clock",
+ of_ti_omap3_dpll_setup);
+
+static void __init of_ti_omap3_core_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 16,
+ .div1_mask = 0x7f << 8,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .freqsel_mask = 0xf0,
+ };
+
+ of_ti_dpll_setup(node, &omap3_dpll_core_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap3_core_dpll_clock, "ti,omap3-dpll-core-clock",
+ of_ti_omap3_core_dpll_setup);
+
+static void __init of_ti_omap3_per_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1 << 1,
+ .enable_mask = 0x7 << 16,
+ .autoidle_mask = 0x7 << 3,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .freqsel_mask = 0xf00000,
+ .modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap3_per_dpll_clock, "ti,omap3-dpll-per-clock",
+ of_ti_omap3_per_dpll_setup);
+
+static void __init of_ti_omap3_per_jtype_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1 << 1,
+ .enable_mask = 0x7 << 16,
+ .autoidle_mask = 0x7 << 3,
+ .mult_mask = 0xfff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 4095,
+ .max_divider = 128,
+ .min_divider = 1,
+ .sddiv_mask = 0xff << 24,
+ .dco_mask = 0xe << 20,
+ .flags = DPLL_J_TYPE,
+ .modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap3_per_jtype_dpll_clock, "ti,omap3-dpll-per-j-type-clock",
+ of_ti_omap3_per_jtype_dpll_setup);
+#endif
+
+static void __init of_ti_omap4_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap4_dpll_clock, "ti,omap4-dpll-clock",
+ of_ti_omap4_dpll_setup);
+
+static void __init of_ti_omap4_core_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap4_core_dpll_clock, "ti,omap4-dpll-core-clock",
+ of_ti_omap4_core_dpll_setup);
+
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
+ defined(CONFIG_SOC_DRA7XX)
+static void __init of_ti_omap4_m4xen_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .m4xen_mask = 0x800,
+ .lpmode_mask = 1 << 10,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap4_m4xen_dpll_clock, "ti,omap4-dpll-m4xen-clock",
+ of_ti_omap4_m4xen_dpll_setup);
+
+static void __init of_ti_omap4_jtype_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0xfff << 8,
+ .div1_mask = 0xff,
+ .max_multiplier = 4095,
+ .max_divider = 256,
+ .min_divider = 1,
+ .sddiv_mask = 0xff << 24,
+ .flags = DPLL_J_TYPE,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
+}
+CLK_OF_DECLARE(ti_omap4_jtype_dpll_clock, "ti,omap4-dpll-j-type-clock",
+ of_ti_omap4_jtype_dpll_setup);
+#endif
+
+static void __init of_ti_am3_no_gate_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd, 0);
+}
+CLK_OF_DECLARE(ti_am3_no_gate_dpll_clock, "ti,am3-dpll-no-gate-clock",
+ of_ti_am3_no_gate_dpll_setup);
+
+static void __init of_ti_am3_no_gate_jtype_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .flags = DPLL_J_TYPE,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd, 0);
+}
+CLK_OF_DECLARE(ti_am3_no_gate_jtype_dpll_clock,
+ "ti,am3-dpll-no-gate-j-type-clock",
+ of_ti_am3_no_gate_jtype_dpll_setup);
+
+static void __init of_ti_am3_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_ck_ops, &dd, 0);
+}
+CLK_OF_DECLARE(ti_am3_dpll_clock, "ti,am3-dpll-clock", of_ti_am3_dpll_setup);
+
+static void __init of_ti_am3_core_dpll_setup(struct device_node *node)
+{
+ const struct dpll_data dd = {
+ .idlest_mask = 0x1,
+ .enable_mask = 0x7,
+ .autoidle_mask = 0x7,
+ .mult_mask = 0x7ff << 8,
+ .div1_mask = 0x7f,
+ .max_multiplier = 2047,
+ .max_divider = 128,
+ .min_divider = 1,
+ .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
+ };
+
+ of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd, 0);
+}
+CLK_OF_DECLARE(ti_am3_core_dpll_clock, "ti,am3-dpll-core-clock",
+ of_ti_am3_core_dpll_setup);
diff --git a/include/linux/clk/ti.h b/include/linux/clk/ti.h
new file mode 100644
index 0000000..385384a
--- /dev/null
+++ b/include/linux/clk/ti.h
@@ -0,0 +1,164 @@
+/*
+ * TI clock drivers support
+ *
+ * Copyright (C) 2013 Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef __LINUX_CLK_TI_H__
+#define __LINUX_CLK_TI_H__
+
+/**
+ * struct dpll_data - DPLL registers and integration data
+ * @mult_div1_reg: register containing the DPLL M and N bitfields
+ * @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
+ * @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
+ * @clk_bypass: struct clk pointer to the clock's bypass clock input
+ * @clk_ref: struct clk pointer to the clock's reference clock input
+ * @control_reg: register containing the DPLL mode bitfield
+ * @enable_mask: mask of the DPLL mode bitfield in @control_reg
+ * @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
+ * @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
+ * @last_rounded_m4xen: cache of the last M4X result of
+ * omap4_dpll_regm4xen_round_rate()
+ * @last_rounded_lpmode: cache of the last lpmode result of
+ * omap4_dpll_lpmode_recalc()
+ * @max_multiplier: maximum valid non-bypass multiplier value (actual)
+ * @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
+ * @min_divider: minimum valid non-bypass divider value (actual)
+ * @max_divider: maximum valid non-bypass divider value (actual)
+ * @modes: possible values of @enable_mask
+ * @autoidle_reg: register containing the DPLL autoidle mode bitfield
+ * @idlest_reg: register containing the DPLL idle status bitfield
+ * @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
+ * @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
+ * @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
+ * @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
+ * @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_reg
+ * @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
+ * @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
+ * @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
+ * @flags: DPLL type/features (see below)
+ *
+ * Possible values for @flags:
+ * DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
+ *
+ * @freqsel_mask is only used on the OMAP34xx family and AM35xx.
+ *
+ * XXX Some DPLLs have multiple bypass inputs, so it's not technically
+ * correct to only have one @clk_bypass pointer.
+ *
+ * XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
+ * @last_rounded_n) should be separated from the runtime-fixed fields
+ * and placed into a different structure, so that the runtime-fixed data
+ * can be placed into read-only space.
+ */
+struct dpll_data {
+ void __iomem *mult_div1_reg;
+ u32 mult_mask;
+ u32 div1_mask;
+ struct clk *clk_bypass;
+ struct clk *clk_ref;
+ void __iomem *control_reg;
+ u32 enable_mask;
+ unsigned long last_rounded_rate;
+ u16 last_rounded_m;
+ u8 last_rounded_m4xen;
+ u8 last_rounded_lpmode;
+ u16 max_multiplier;
+ u8 last_rounded_n;
+ u8 min_divider;
+ u16 max_divider;
+ u8 modes;
+ void __iomem *autoidle_reg;
+ void __iomem *idlest_reg;
+ u32 autoidle_mask;
+ u32 freqsel_mask;
+ u32 idlest_mask;
+ u32 dco_mask;
+ u32 sddiv_mask;
+ u32 lpmode_mask;
+ u32 m4xen_mask;
+ u8 auto_recal_bit;
+ u8 recal_en_bit;
+ u8 recal_st_bit;
+ u8 flags;
+};
+
+struct clk_hw_omap_ops;
+
+/**
+ * struct clk_hw_omap - OMAP struct clk
+ * @node: list_head connecting this clock into the full clock list
+ * @enable_reg: register to write to enable the clock (see @enable_bit)
+ * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
+ * @flags: see "struct clk.flags possibilities" above
+ * @clksel_reg: for clksel clks, register va containing src/divisor select
+ * @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
+ * @clksel: for clksel clks, pointer to struct clksel for this clock
+ * @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
+ * @clkdm_name: clockdomain name that this clock is contained in
+ * @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
+ * @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
+ * @src_offset: bitshift for source selection bitfield (OMAP1 only)
+ *
+ * XXX @rate_offset, @src_offset should probably be removed and OMAP1
+ * clock code converted to use clksel.
+ *
+ */
+struct clk_hw_omap {
+ struct clk_hw hw;
+ struct list_head node;
+ unsigned long fixed_rate;
+ u8 fixed_div;
+ void __iomem *enable_reg;
+ u8 enable_bit;
+ u8 flags;
+ void __iomem *clksel_reg;
+ u32 clksel_mask;
+ const struct clksel *clksel;
+ struct dpll_data *dpll_data;
+ const char *clkdm_name;
+ struct clockdomain *clkdm;
+ const struct clk_hw_omap_ops *ops;
+};
+
+/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
+#define DPLL_LOW_POWER_STOP 0x1
+#define DPLL_LOW_POWER_BYPASS 0x5
+#define DPLL_LOCKED 0x7
+
+/* DPLL Type and DCO Selection Flags */
+#define DPLL_J_TYPE 0x1
+
+void omap2_init_clk_hw_omap_clocks(struct clk *clk);
+int omap3_noncore_dpll_enable(struct clk_hw *hw);
+void omap3_noncore_dpll_disable(struct clk_hw *hw);
+int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate);
+unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
+ unsigned long parent_rate);
+long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
+ unsigned long target_rate,
+ unsigned long *parent_rate);
+u8 omap2_init_dpll_parent(struct clk_hw *hw);
+unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
+long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
+ unsigned long *parent_rate);
+void omap2_init_clk_clkdm(struct clk_hw *clk);
+unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
+ unsigned long parent_rate);
+int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
+ unsigned long parent_rate);
+
+extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
+extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
+
+#endif
--
1.7.9.5
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