clk: add support for TI K3 SoC clocks

Add driver to support TI K3 generation SoC clocks. This driver registers
the clocks provided via platform data, and adds support for controlling
the clocks via DT handles.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>

1 files changed, 161 insertions, 0 deletions

diff --git a/include/k3-clk.h b/include/k3-clk.h
index fc84378d03..0735228579 100644
--- a/include/k3-clk.h
+++ b/include/k3-clk.h
@@ -7,7 +7,168 @@
 #ifndef __K3_CLK_H__
 #define __K3_CLK_H__
 
+#include <asm/io.h>
+#include <linux/bitops.h>
 #include <linux/clk-provider.h>
+#include <linux/types.h>
+#include <stdint.h>
+
+struct dev_clk {
+	int dev_id;
+	int clk_id;
+	const char *clk_name;
+};
+
+#define DEV_CLK(_dev_id, _clk_id, _clk_name) { .dev_id = _dev_id,		\
+					.clk_id = _clk_id, .clk_name = _clk_name, }
+
+#define CLK_TYPE_MUX		0x01
+#define CLK_TYPE_DIV		0x02
+#define CLK_TYPE_PLL		0x03
+#define CLK_TYPE_HFOSC		0x04
+#define CLK_TYPE_POSTDIV	0x05
+#define CLK_TYPE_MUX_PLLCTRL	0x06
+#define CLK_TYPE_FIXED_RATE	0x07
+
+struct pll_data {
+	u32 reg;
+	const char *name;
+	const char *parent;
+	u32 flags;
+};
+
+struct mux_data {
+	u32 reg;
+	const char *name;
+	const char * const *parents;
+	int num_parents;
+	u32 flags;
+	int shift;
+	int width;
+};
+
+struct div_data {
+	u32 reg;
+	const char *name;
+	const char *parent;
+	u32 flags;
+	int shift;
+	int width;
+};
+
+struct hfosc_data {
+	const char *name;
+	u32 flags;
+};
+
+struct fixed_rate_data {
+	const char *name;
+	u64 rate;
+	u32 flags;
+};
+
+struct postdiv_data {
+	const char *name;
+	const char *parent;
+	int width;
+	u32 flags;
+};
+
+struct mux_pllctrl_data {
+	u32 reg;
+	const char *name;
+	const char * const *parents;
+	int num_parents;
+	u32 flags;
+};
+
+struct clk_data {
+	int type;
+	u32 default_freq;
+	union {
+		struct pll_data pll;
+		struct mux_data mux;
+		struct div_data div;
+		struct hfosc_data hfosc;
+		struct postdiv_data postdiv;
+		struct mux_pllctrl_data mux_pllctrl;
+		struct fixed_rate_data fixed_rate;
+	} clk;
+};
+
+#define CLK_MUX(_name, _parents, _num_parents, _reg, _shift, _width, _flags) \
+	{								\
+		.type = CLK_TYPE_MUX,					\
+		.clk.mux = { .name = _name, .parents = _parents,	\
+		.reg = _reg,						\
+		.num_parents = _num_parents, .shift = _shift,		\
+		.width = _width, .flags = _flags }			\
+	}
+
+#define CLK_DIV(_name, _parent, _reg, _shift, _width, _flags)	\
+	{							\
+		.type = CLK_TYPE_DIV,				\
+		.clk.div = {.name = _name, .parent = _parent, .reg = _reg, .shift = _shift, .width = _width, .flags = _flags } \
+	}
+
+#define CLK_DIV_DEFFREQ(_name, _parent, _reg, _shift, _width, _flags, _freq) \
+	{							\
+		.type = CLK_TYPE_DIV,				\
+		.default_freq = _freq,				\
+		.clk.div = {					\
+			.name = _name, .parent = _parent,	\
+			.reg = _reg, .shift = _shift,		\
+			.width = _width, .flags = _flags }	\
+	}
+
+#define CLK_PLL(_name, _parent, _reg,  _flags)	\
+	{					\
+		.type = CLK_TYPE_PLL,		\
+		.clk.pll = {.name = _name, .parent = _parent, .reg = _reg, .flags = _flags } \
+	}
+
+#define CLK_PLL_DEFFREQ(_name, _parent, _reg, _flags, _freq)	\
+	{							\
+		.type = CLK_TYPE_PLL,				\
+		.default_freq = _freq,				\
+		.clk.pll = { .name = _name, .parent = _parent,	\
+				.reg = _reg, .flags = _flags }	\
+	}
+
+#define CLK_HFOSC(_name, _flags)		\
+	{					\
+		.type = CLK_TYPE_HFOSC,		\
+		.clk.hfosc = { .name = _name, .flags = _flags } \
+	}
+
+#define CLK_FIXED_RATE(_name, _rate, _flags)		\
+	{						\
+		.type = CLK_TYPE_FIXED_RATE,		\
+		.clk.fixed_rate = { .name = _name, .rate = _rate, .flags = _flags } \
+	}
+
+#define CLK_POSTDIV(_name, _parent, _width, _flags)	\
+	{						\
+		.type = CLK_TYPE_POSTDIV,		\
+		.clk.postdiv = {.name = _name, .parent = _parent, .width = _width, .flags = _flags } \
+	}
+
+#define CLK_MUX_PLLCTRL(_name, _parents, _num_parents, _reg, _flags)	\
+	{								\
+		.type = CLK_TYPE_MUX,					\
+		.clk.mux_pllctrl = { .name = _name, .parents = _parents,\
+		.num_parents = _num_parents, .flags = _flags }		\
+	}
+
+struct ti_k3_clk_platdata {
+	const struct clk_data *clk_list;
+	int clk_list_cnt;
+	const struct dev_clk *soc_dev_clk_data;
+	int soc_dev_clk_data_cnt;
+};
+
+extern const struct ti_k3_clk_platdata j721e_clk_platdata;
+extern const struct ti_k3_clk_platdata j7200_clk_platdata;
 
 struct clk *clk_register_ti_pll(const char *name, const char *parent_name,
 				void __iomem *reg);