clk: socfpga: stratix10: add clock driver for Stratix10 platform

Add a clock driver for the Stratix10 SoC. The driver is similar to the
Cyclone5/Arria10 platforms, with the exception that this driver only uses
one single clock binding.
Signed-off-by: NDinh Nguyen <dinguyen@kernel.org>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>

drivers/clk/Makefile

@@ -88,6 +88,7 @@ obj-$(CONFIG_ARCH_SOCFPGA)		+= socfpga/
 obj-$(CONFIG_PLAT_SPEAR)		+= spear/
 obj-$(CONFIG_ARCH_SPRD)			+= sprd/
 obj-$(CONFIG_ARCH_STI)			+= st/
+obj-$(CONFIG_ARCH_STRATIX10)		+= socfpga/
 obj-$(CONFIG_ARCH_SUNXI)		+= sunxi/
 obj-$(CONFIG_ARCH_SUNXI)		+= sunxi-ng/
 obj-$(CONFIG_ARCH_TEGRA)		+= tegra/

drivers/clk/socfpga/Makefile

 # SPDX-License-Identifier: GPL-2.0
-obj-y += clk.o
-obj-y += clk-gate.o
-obj-y += clk-pll.o
-obj-y += clk-periph.o
-obj-y += clk-pll-a10.o clk-periph-a10.o clk-gate-a10.o
+obj-$(CONFIG_ARCH_SOCFPGA) += clk.o clk-gate.o clk-pll.o clk-periph.o
+obj-$(CONFIG_ARCH_SOCFPGA) += clk-pll-a10.o clk-periph-a10.o clk-gate-a10.o
+obj-$(CONFIG_ARCH_STRATIX10) += clk-s10.o
+obj-$(CONFIG_ARCH_STRATIX10) += clk-pll-s10.o clk-periph-s10.o clk-gate-s10.o

drivers/clk/socfpga/clk-gate-s10.c

+// SPDX-License-Identifier:	GPL-2.0
+/*
+ * Copyright (C) 2017, Intel Corporation
+ */
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include "stratix10-clk.h"
+#include "clk.h"
+
+#define SOCFPGA_CS_PDBG_CLK	"cs_pdbg_clk"
+#define to_socfpga_gate_clk(p) container_of(p, struct socfpga_gate_clk, hw.hw)
+
+static unsigned long socfpga_gate_clk_recalc_rate(struct clk_hw *hwclk,
+						  unsigned long parent_rate)
+{
+	struct socfpga_gate_clk *socfpgaclk = to_socfpga_gate_clk(hwclk);
+	u32 div = 1, val;
+
+	if (socfpgaclk->fixed_div) {
+		div = socfpgaclk->fixed_div;
+	} else if (socfpgaclk->div_reg) {
+		val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
+		val &= GENMASK(socfpgaclk->width - 1, 0);
+		div = (1 << val);
+	}
+	return parent_rate / div;
+}
+
+static unsigned long socfpga_dbg_clk_recalc_rate(struct clk_hw *hwclk,
+						  unsigned long parent_rate)
+{
+	struct socfpga_gate_clk *socfpgaclk = to_socfpga_gate_clk(hwclk);
+	u32 div = 1, val;
+
+	val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
+	val &= GENMASK(socfpgaclk->width - 1, 0);
+	div = (1 << val);
+	div = div ? 4 : 1;
+
+	return parent_rate / div;
+}
+
+static u8 socfpga_gate_get_parent(struct clk_hw *hwclk)
+{
+	struct socfpga_gate_clk *socfpgaclk = to_socfpga_gate_clk(hwclk);
+	u32 mask;
+	u8 parent = 0;
+
+	if (socfpgaclk->bypass_reg) {
+		mask = (0x1 << socfpgaclk->bypass_shift);
+		parent = ((readl(socfpgaclk->bypass_reg) & mask) >>
+			  socfpgaclk->bypass_shift);
+	}
+	return parent;
+}
+
+static struct clk_ops gateclk_ops = {
+	.recalc_rate = socfpga_gate_clk_recalc_rate,
+	.get_parent = socfpga_gate_get_parent,
+};
+
+static const struct clk_ops dbgclk_ops = {
+	.recalc_rate = socfpga_dbg_clk_recalc_rate,
+	.get_parent = socfpga_gate_get_parent,
+};
+
+struct clk *s10_register_gate(const char *name, const char *parent_name,
+			      const char * const *parent_names,
+			      u8 num_parents, unsigned long flags,
+			      void __iomem *regbase, unsigned long gate_reg,
+			      unsigned long gate_idx, unsigned long div_reg,
+			      unsigned long div_offset, u8 div_width,
+			      unsigned long bypass_reg, u8 bypass_shift,
+			      u8 fixed_div)
+{
+	struct clk *clk;
+	struct socfpga_gate_clk *socfpga_clk;
+	struct clk_init_data init;
+
+	socfpga_clk = kzalloc(sizeof(*socfpga_clk), GFP_KERNEL);
+	if (!socfpga_clk)
+		return NULL;
+
+	socfpga_clk->hw.reg = regbase + gate_reg;
+	socfpga_clk->hw.bit_idx = gate_idx;
+
+	gateclk_ops.enable = clk_gate_ops.enable;
+	gateclk_ops.disable = clk_gate_ops.disable;
+
+	socfpga_clk->fixed_div = fixed_div;
+
+	if (div_reg)
+		socfpga_clk->div_reg = regbase + div_reg;
+	else
+		socfpga_clk->div_reg = NULL;
+
+	socfpga_clk->width = div_width;
+	socfpga_clk->shift = div_offset;
+
+	if (bypass_reg)
+		socfpga_clk->bypass_reg = regbase + bypass_reg;
+	else
+		socfpga_clk->bypass_reg = NULL;
+	socfpga_clk->bypass_shift = bypass_shift;
+
+	if (streq(name, "cs_pdbg_clk"))
+		init.ops = &dbgclk_ops;
+	else
+		init.ops = &gateclk_ops;
+
+	init.name = name;
+	init.flags = flags;
+
+	init.num_parents = num_parents;
+	init.parent_names = parent_names ? parent_names : &parent_name;
+	socfpga_clk->hw.hw.init = &init;
+
+	clk = clk_register(NULL, &socfpga_clk->hw.hw);
+	if (WARN_ON(IS_ERR(clk))) {
+		kfree(socfpga_clk);
+		return NULL;
+	}
+
+	return clk;
+}

drivers/clk/socfpga/clk-periph-s10.c

+// SPDX-License-Identifier:	GPL-2.0
+/*
+ * Copyright (C) 2017, Intel Corporation
+ */
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+
+#include "stratix10-clk.h"
+#include "clk.h"
+
+#define CLK_MGR_FREE_SHIFT		16
+#define CLK_MGR_FREE_MASK		0x7
+#define SWCTRLBTCLKSEN_SHIFT		8
+
+#define to_periph_clk(p) container_of(p, struct socfpga_periph_clk, hw.hw)
+
+static unsigned long clk_peri_c_clk_recalc_rate(struct clk_hw *hwclk,
+					     unsigned long parent_rate)
+{
+	struct socfpga_periph_clk *socfpgaclk = to_periph_clk(hwclk);
+	unsigned long div = 1;
+	u32 val;
+
+	val = readl(socfpgaclk->hw.reg);
+	val &= GENMASK(SWCTRLBTCLKSEN_SHIFT - 1, 0);
+	parent_rate /= val;
+
+	return parent_rate / div;
+}
+
+static unsigned long clk_peri_cnt_clk_recalc_rate(struct clk_hw *hwclk,
+					     unsigned long parent_rate)
+{
+	struct socfpga_periph_clk *socfpgaclk = to_periph_clk(hwclk);
+	unsigned long div = 1;
+
+	if (socfpgaclk->fixed_div) {
+		div = socfpgaclk->fixed_div;
+	} else {
+		if (!socfpgaclk->bypass_reg)
+			div = ((readl(socfpgaclk->hw.reg) & 0x7ff) + 1);
+	}
+
+	return parent_rate / div;
+}
+
+static u8 clk_periclk_get_parent(struct clk_hw *hwclk)
+{
+	struct socfpga_periph_clk *socfpgaclk = to_periph_clk(hwclk);
+	u32 clk_src, mask;
+	u8 parent;
+
+	if (socfpgaclk->bypass_reg) {
+		mask = (0x1 << socfpgaclk->bypass_shift);
+		parent = ((readl(socfpgaclk->bypass_reg) & mask) >>
+			   socfpgaclk->bypass_shift);
+	} else {
+		clk_src = readl(socfpgaclk->hw.reg);
+		parent = (clk_src >> CLK_MGR_FREE_SHIFT) &
+			CLK_MGR_FREE_MASK;
+	}
+	return parent;
+}
+
+static const struct clk_ops peri_c_clk_ops = {
+	.recalc_rate = clk_peri_c_clk_recalc_rate,
+	.get_parent = clk_periclk_get_parent,
+};
+
+static const struct clk_ops peri_cnt_clk_ops = {
+	.recalc_rate = clk_peri_cnt_clk_recalc_rate,
+	.get_parent = clk_periclk_get_parent,
+};
+
+struct clk *s10_register_periph(const char *name, const char *parent_name,
+				const char * const *parent_names,
+				u8 num_parents, unsigned long flags,
+				void __iomem *reg, unsigned long offset)
+{
+	struct clk *clk;
+	struct socfpga_periph_clk *periph_clk;
+	struct clk_init_data init;
+
+	periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
+	if (WARN_ON(!periph_clk))
+		return NULL;
+
+	periph_clk->hw.reg = reg + offset;
+
+	init.name = name;
+	init.ops = &peri_c_clk_ops;
+	init.flags = flags;
+
+	init.num_parents = num_parents;
+	init.parent_names = parent_names ? parent_names : &parent_name;
+
+	periph_clk->hw.hw.init = &init;
+
+	clk = clk_register(NULL, &periph_clk->hw.hw);
+	if (WARN_ON(IS_ERR(clk))) {
+		kfree(periph_clk);
+		return NULL;
+	}
+	return clk;
+}
+
+struct clk *s10_register_cnt_periph(const char *name, const char *parent_name,
+				    const char * const *parent_names,
+				    u8 num_parents, unsigned long flags,
+				    void __iomem *regbase, unsigned long offset,
+				    u8 fixed_divider, unsigned long bypass_reg,
+				    unsigned long bypass_shift)
+{
+	struct clk *clk;
+	struct socfpga_periph_clk *periph_clk;
+	struct clk_init_data init;
+
+	periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
+	if (WARN_ON(!periph_clk))
+		return NULL;
+
+	if (offset)
+		periph_clk->hw.reg = regbase + offset;
+	else
+		periph_clk->hw.reg = NULL;
+
+	if (bypass_reg)
+		periph_clk->bypass_reg = regbase + bypass_reg;
+	else
+		periph_clk->bypass_reg = NULL;
+	periph_clk->bypass_shift = bypass_shift;
+	periph_clk->fixed_div = fixed_divider;
+
+	init.name = name;
+	init.ops = &peri_cnt_clk_ops;
+	init.flags = flags;
+
+	init.num_parents = num_parents;
+	init.parent_names = parent_names ? parent_names : &parent_name;
+
+	periph_clk->hw.hw.init = &init;
+
+	clk = clk_register(NULL, &periph_clk->hw.hw);
+	if (WARN_ON(IS_ERR(clk))) {
+		kfree(periph_clk);
+		return NULL;
+	}
+	return clk;
+}

drivers/clk/socfpga/clk-pll-s10.c

+// SPDX-License-Identifier:	GPL-2.0
+/*
+ * Copyright (C) 2017, Intel Corporation
+ */
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+
+#include "stratix10-clk.h"
+#include "clk.h"
+
+/* Clock Manager offsets */
+#define CLK_MGR_PLL_CLK_SRC_SHIFT	16
+#define CLK_MGR_PLL_CLK_SRC_MASK	0x3
+
+/* PLL Clock enable bits */
+#define SOCFPGA_PLL_POWER		0
+#define SOCFPGA_PLL_RESET_MASK		0x2
+#define SOCFPGA_PLL_REFDIV_MASK		0x00003F00
+#define SOCFPGA_PLL_REFDIV_SHIFT	8
+#define SOCFPGA_PLL_MDIV_MASK		0xFF000000
+#define SOCFPGA_PLL_MDIV_SHIFT		24
+#define SWCTRLBTCLKSEL_MASK		0x200
+#define SWCTRLBTCLKSEL_SHIFT		9
+
+#define SOCFPGA_BOOT_CLK		"boot_clk"
+
+#define to_socfpga_clk(p) container_of(p, struct socfpga_pll, hw.hw)
+
+static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
+					 unsigned long parent_rate)
+{
+	struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+	unsigned long mdiv;
+	unsigned long refdiv;
+	unsigned long reg;
+	unsigned long long vco_freq;
+
+	/* read VCO1 reg for numerator and denominator */
+	reg = readl(socfpgaclk->hw.reg);
+	refdiv = (reg & SOCFPGA_PLL_REFDIV_MASK) >> SOCFPGA_PLL_REFDIV_SHIFT;
+	vco_freq = (unsigned long long)parent_rate / refdiv;
+
+	/* Read mdiv and fdiv from the fdbck register */
+	reg = readl(socfpgaclk->hw.reg + 0x4);
+	mdiv = (reg & SOCFPGA_PLL_MDIV_MASK) >> SOCFPGA_PLL_MDIV_SHIFT;
+	vco_freq = (unsigned long long)parent_rate * (mdiv + 6);
+
+	return (unsigned long)vco_freq;
+}
+
+static unsigned long clk_boot_clk_recalc_rate(struct clk_hw *hwclk,
+					 unsigned long parent_rate)
+{
+	struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+	u32 div = 1;
+
+	div = ((readl(socfpgaclk->hw.reg) &
+		SWCTRLBTCLKSEL_MASK) >>
+		SWCTRLBTCLKSEL_SHIFT);
+	div += 1;
+	return parent_rate /= div;
+}
+
+
+static u8 clk_pll_get_parent(struct clk_hw *hwclk)
+{
+	struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+	u32 pll_src;
+
+	pll_src = readl(socfpgaclk->hw.reg);
+	return (pll_src >> CLK_MGR_PLL_CLK_SRC_SHIFT) &
+		CLK_MGR_PLL_CLK_SRC_MASK;
+}
+
+static u8 clk_boot_get_parent(struct clk_hw *hwclk)
+{
+	struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+	u32 pll_src;
+
+	pll_src = readl(socfpgaclk->hw.reg);
+	return (pll_src >> SWCTRLBTCLKSEL_SHIFT) &
+		SWCTRLBTCLKSEL_MASK;
+}
+
+static int clk_pll_prepare(struct clk_hw *hwclk)
+{
+	struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+	u32 reg;
+
+	/* Bring PLL out of reset */
+	reg = readl(socfpgaclk->hw.reg);
+	reg |= SOCFPGA_PLL_RESET_MASK;
+	writel(reg, socfpgaclk->hw.reg);
+
+	return 0;
+}
+
+static struct clk_ops clk_pll_ops = {
+	.recalc_rate = clk_pll_recalc_rate,
+	.get_parent = clk_pll_get_parent,
+	.prepare = clk_pll_prepare,
+};
+
+static struct clk_ops clk_boot_ops = {
+	.recalc_rate = clk_boot_clk_recalc_rate,
+	.get_parent = clk_boot_get_parent,
+	.prepare = clk_pll_prepare,
+};
+
+struct clk *s10_register_pll(const char *name, const char * const *parent_names,
+				    u8 num_parents, unsigned long flags,
+				    void __iomem *reg, unsigned long offset)
+{
+	struct clk *clk;
+	struct socfpga_pll *pll_clk;
+	struct clk_init_data init;
+
+	pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL);
+	if (WARN_ON(!pll_clk))
+		return NULL;
+
+	pll_clk->hw.reg = reg + offset;
+
+	if (streq(name, SOCFPGA_BOOT_CLK))
+		init.ops = &clk_boot_ops;
+	else
+		init.ops = &clk_pll_ops;
+
+	init.name = name;
+	init.flags = flags;
+
+	init.num_parents = num_parents;
+	init.parent_names = parent_names;
+	pll_clk->hw.hw.init = &init;
+
+	pll_clk->hw.bit_idx = SOCFPGA_PLL_POWER;
+	clk_pll_ops.enable = clk_gate_ops.enable;
+	clk_pll_ops.disable = clk_gate_ops.disable;
+
+	clk = clk_register(NULL, &pll_clk->hw.hw);
+	if (WARN_ON(IS_ERR(clk))) {
+		kfree(pll_clk);
+		return NULL;
+	}
+	return clk;
+}

drivers/clk/socfpga/clk-s10.c

+// SPDX-License-Identifier:	GPL-2.0
+/*
+ * Copyright (C) 2017, Intel Corporation
+ */
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/clock/stratix10-clock.h>
+
+#include "stratix10-clk.h"
+
+static const char * const pll_mux[] = { "osc1", "cb_intosc_hs_div2_clk",
+					"f2s_free_clk",};
+static const char * const cntr_mux[] = { "main_pll", "periph_pll",
+					 "osc1", "cb_intosc_hs_div2_clk",
+					 "f2s_free_clk"};
+static const char * const boot_mux[] = { "osc1", "cb_intosc_hs_div2_clk",};
+
+static const char * const noc_free_mux[] = {"main_noc_base_clk",
+					    "peri_noc_base_clk",
+					    "osc1", "cb_intosc_hs_div2_clk",
+					    "f2s_free_clk"};
+
+static const char * const emaca_free_mux[] = {"peri_emaca_clk", "boot_clk"};
+static const char * const emacb_free_mux[] = {"peri_emacb_clk", "boot_clk"};
+static const char * const emac_ptp_free_mux[] = {"peri_emac_ptp_clk", "boot_clk"};
+static const char * const gpio_db_free_mux[] = {"peri_gpio_db_clk", "boot_clk"};
+static const char * const sdmmc_free_mux[] = {"peri_sdmmc_clk", "boot_clk"};
+static const char * const s2f_usr1_free_mux[] = {"peri_s2f_usr1_clk", "boot_clk"};
+static const char * const psi_ref_free_mux[] = {"peri_psi_ref_clk", "boot_clk"};
+static const char * const mpu_mux[] = { "mpu_free_clk", "boot_clk",};
+
+static const char * const s2f_usr0_mux[] = {"f2s_free_clk", "boot_clk"};
+static const char * const emac_mux[] = {"emaca_free_clk", "emacb_free_clk"};
+static const char * const noc_mux[] = {"noc_free_clk", "boot_clk"};
+
+/* clocks in AO (always on) controller */
+static const struct stratix10_pll_clock s10_pll_clks[] = {
+	{ STRATIX10_BOOT_CLK, "boot_clk", boot_mux, ARRAY_SIZE(boot_mux), 0,
+	  0x0},
+	{ STRATIX10_MAIN_PLL_CLK, "main_pll", pll_mux, ARRAY_SIZE(pll_mux),
+	  0, 0x74},
+	{ STRATIX10_PERIPH_PLL_CLK, "periph_pll", pll_mux, ARRAY_SIZE(pll_mux),
+	  0, 0xe4},
+};
+
+static const struct stratix10_perip_c_clock s10_main_perip_c_clks[] = {
+	{ STRATIX10_MAIN_MPU_BASE_CLK, "main_mpu_base_clk", "main_pll", NULL, 1, 0, 0x84},
+	{ STRATIX10_MAIN_NOC_BASE_CLK, "main_noc_base_clk", "main_pll", NULL, 1, 0, 0x88},
+	{ STRATIX10_PERI_MPU_BASE_CLK, "peri_mpu_base_clk", "periph_pll", NULL, 1, 0,
+	  0xF4},
+	{ STRATIX10_PERI_NOC_BASE_CLK, "peri_noc_base_clk", "periph_pll", NULL, 1, 0,
+	  0xF8},
+};
+
+static const struct stratix10_perip_cnt_clock s10_main_perip_cnt_clks[] = {
+	{ STRATIX10_MPU_FREE_CLK, "mpu_free_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	   0, 0x48, 0, 0, 0},
+	{ STRATIX10_NOC_FREE_CLK, "noc_free_clk", NULL, noc_free_mux, ARRAY_SIZE(noc_free_mux),
+	  0, 0x4C, 0, 0, 0},
+	{ STRATIX10_MAIN_EMACA_CLK, "main_emaca_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x50, 0, 0, 0},
+	{ STRATIX10_MAIN_EMACB_CLK, "main_emacb_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x54, 0, 0, 0},
+	{ STRATIX10_MAIN_EMAC_PTP_CLK, "main_emac_ptp_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x58, 0, 0, 0},
+	{ STRATIX10_MAIN_GPIO_DB_CLK, "main_gpio_db_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x5C, 0, 0, 0},
+	{ STRATIX10_MAIN_SDMMC_CLK, "main_sdmmc_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x60, 0, 0, 0},
+	{ STRATIX10_MAIN_S2F_USR0_CLK, "main_s2f_usr0_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0x64, 0, 0, 0},
+	{ STRATIX10_MAIN_S2F_USR1_CLK, "main_s2f_usr1_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x68, 0, 0, 0},
+	{ STRATIX10_MAIN_PSI_REF_CLK, "main_psi_ref_clk", "main_noc_base_clk", NULL, 1, 0,
+	  0x6C, 0, 0, 0},
+	{ STRATIX10_PERI_EMACA_CLK, "peri_emaca_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xBC, 0, 0, 0},
+	{ STRATIX10_PERI_EMACB_CLK, "peri_emacb_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xC0, 0, 0, 0},
+	{ STRATIX10_PERI_EMAC_PTP_CLK, "peri_emac_ptp_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xC4, 0, 0, 0},
+	{ STRATIX10_PERI_GPIO_DB_CLK, "peri_gpio_db_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xC8, 0, 0, 0},
+	{ STRATIX10_PERI_SDMMC_CLK, "peri_sdmmc_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xCC, 0, 0, 0},
+	{ STRATIX10_PERI_S2F_USR0_CLK, "peri_s2f_usr0_clk", "peri_noc_base_clk", NULL, 1, 0,
+	  0xD0, 0, 0, 0},
+	{ STRATIX10_PERI_S2F_USR1_CLK, "peri_s2f_usr1_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux),
+	  0, 0xD4, 0, 0, 0},
+	{ STRATIX10_PERI_PSI_REF_CLK, "peri_psi_ref_clk", "peri_noc_base_clk", NULL, 1, 0,
+	  0xD8, 0, 0, 0},
+	{ STRATIX10_L4_SYS_FREE_CLK, "l4_sys_free_clk", "noc_free_clk", NULL, 1, 0,
+	  0, 4, 0, 0},
+	{ STRATIX10_NOC_CLK, "noc_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux),
+	  0, 0, 0, 0x3C, 1},
+	{ STRATIX10_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux),
+	  0, 0, 4, 0xB0, 0},
+	{ STRATIX10_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux),
+	  0, 0, 4, 0xB0, 1},
+	{ STRATIX10_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux,
+	  ARRAY_SIZE(emac_ptp_free_mux), 0, 0, 4, 0xB0, 2},
+	{ STRATIX10_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux,
+	  ARRAY_SIZE(gpio_db_free_mux), 0, 0, 0, 0xB0, 3},
+	{ STRATIX10_SDMMC_FREE_CLK, "sdmmc_free_clk", NULL, sdmmc_free_mux,
+	  ARRAY_SIZE(sdmmc_free_mux), 0, 0, 0, 0xB0, 4},
+	{ STRATIX10_S2F_USER1_FREE_CLK, "s2f_user1_free_clk", NULL, s2f_usr1_free_mux,
+	  ARRAY_SIZE(s2f_usr1_free_mux), 0, 0, 0, 0xB0, 5},
+	{ STRATIX10_PSI_REF_FREE_CLK, "psi_ref_free_clk", NULL, psi_ref_free_mux,
+	  ARRAY_SIZE(psi_ref_free_mux), 0, 0, 0, 0xB0, 6},
+};
+
+static const struct stratix10_gate_clock s10_gate_clks[] = {
+	{ STRATIX10_MPU_CLK, "mpu_clk", NULL, mpu_mux, ARRAY_SIZE(mpu_mux), 0, 0x30,
+	  0, 0, 0, 0, 0x3C, 0, 0},
+	{ STRATIX10_MPU_PERIPH_CLK, "mpu_periph_clk", "mpu_clk", NULL, 1, 0, 0x30,
+	  0, 0, 0, 0, 0, 0, 4},
+	{ STRATIX10_MPU_L2RAM_CLK, "mpu_l2ram_clk", "mpu_clk", NULL, 1, 0, 0x30,
+	  0, 0, 0, 0, 0, 0, 2},
+	{ STRATIX10_L4_MAIN_CLK, "l4_main_clk", "noc_clk", NULL, 1, 0, 0x30,
+	  1, 0x70, 0, 2, 0, 0, 0},
+	{ STRATIX10_L4_MP_CLK, "l4_mp_clk", "noc_clk", NULL, 1, 0, 0x30,
+	  2, 0x70, 8, 2, 0, 0, 0},
+	{ STRATIX10_L4_SP_CLK, "l4_sp_clk", "noc_clk", NULL, 1, CLK_IS_CRITICAL, 0x30,
+	  3, 0x70, 16, 2, 0, 0, 0},
+	{ STRATIX10_CS_AT_CLK, "cs_at_clk", "noc_clk", NULL, 1, 0, 0x30,
+	  4, 0x70, 24, 2, 0, 0, 0},
+	{ STRATIX10_CS_TRACE_CLK, "cs_trace_clk", "noc_clk", NULL, 1, 0, 0x30,
+	  4, 0x70, 26, 2, 0, 0, 0},
+	{ STRATIX10_CS_PDBG_CLK, "cs_pdbg_clk", "cs_at_clk", NULL, 1, 0, 0x30,
+	  4, 0x70, 28, 1, 0, 0, 0},
+	{ STRATIX10_CS_TIMER_CLK, "cs_timer_clk", "noc_clk", NULL, 1, 0, 0x30,
+	  5, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_S2F_USER0_CLK, "s2f_user0_clk", NULL, s2f_usr0_mux, ARRAY_SIZE(s2f_usr0_mux), 0, 0x30,
+	  6, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_EMAC0_CLK, "emac0_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
+	  0, 0, 0, 0, 0xDC, 26, 0},
+	{ STRATIX10_EMAC1_CLK, "emac1_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
+	  1, 0, 0, 0, 0xDC, 27, 0},
+	{ STRATIX10_EMAC2_CLK, "emac2_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4,
+	  2, 0, 0, 0, 0xDC, 28, 0},
+	{ STRATIX10_EMAC_PTP_CLK, "emac_ptp_clk", "emac_ptp_free_clk", NULL, 1, 0, 0xA4,
+	  3, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_GPIO_DB_CLK, "gpio_db_clk", "gpio_db_free_clk", NULL, 1, 0, 0xA4,
+	  4, 0xE0, 0, 16, 0, 0, 0},
+	{ STRATIX10_SDMMC_CLK, "sdmmc_clk", "sdmmc_free_clk", NULL, 1, 0, 0xA4,
+	  5, 0, 0, 0, 0, 0, 4},
+	{ STRATIX10_S2F_USER1_CLK, "s2f_user1_clk", "s2f_user1_free_clk", NULL, 1, 0, 0xA4,
+	  6, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_PSI_REF_CLK, "psi_ref_clk", "psi_ref_free_clk", NULL, 1, 0, 0xA4,
+	  7, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_USB_CLK, "usb_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
+	  8, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
+	  9, 0, 0, 0, 0, 0, 0},
+	{ STRATIX10_NAND_CLK, "nand_clk", "l4_main_clk", NULL, 1, 0, 0xA4,
+	  10, 0, 0, 0, 0, 0, 0},
+};
+
+static int s10_clk_register_c_perip(const struct stratix10_perip_c_clock *clks,
+				    int nums, struct stratix10_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = s10_register_periph(clks[i].name, clks[i].parent_name,
+					  clks[i].parent_names, clks[i].num_parents,
+					  clks[i].flags, base, clks[i].offset);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			continue;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+	return 0;
+}
+
+static int s10_clk_register_cnt_perip(const struct stratix10_perip_cnt_clock *clks,
+				      int nums, struct stratix10_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = s10_register_cnt_periph(clks[i].name, clks[i].parent_name,
+					      clks[i].parent_names,
+					      clks[i].num_parents,
+					      clks[i].flags, base,
+					      clks[i].offset,
+					      clks[i].fixed_divider,
+					      clks[i].bypass_reg,
+					      clks[i].bypass_shift);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			continue;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+}
+
+static int s10_clk_register_gate(const struct stratix10_gate_clock *clks,
+				 int nums, struct stratix10_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = s10_register_gate(clks[i].name, clks[i].parent_name,
+					clks[i].parent_names,
+					clks[i].num_parents,
+					clks[i].flags, base,
+					clks[i].gate_reg,
+					clks[i].gate_idx, clks[i].div_reg,
+					clks[i].div_offset, clks[i].div_width,
+					clks[i].bypass_reg,
+					clks[i].bypass_shift,
+					clks[i].fixed_div);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			continue;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+}
+
+static int s10_clk_register_pll(const struct stratix10_pll_clock *clks,
+				 int nums, struct stratix10_clock_data *data)
+{
+	struct clk *clk;
+	void __iomem *base = data->base;
+	int i;
+
+	for (i = 0; i < nums; i++) {
+		clk = s10_register_pll(clks[i].name, clks[i].parent_names,
+				    clks[i].num_parents,
+				    clks[i].flags, base,
+				    clks[i].offset);
+		if (IS_ERR(clk)) {
+			pr_err("%s: failed to register clock %s\n",
+			       __func__, clks[i].name);
+			continue;
+		}
+		data->clk_data.clks[clks[i].id] = clk;
+	}
+
+	return 0;
+}
+
+static struct stratix10_clock_data *__socfpga_s10_clk_init(struct device_node *np,
+						    int nr_clks)
+{
+	struct stratix10_clock_data *clk_data;
+	struct clk **clk_table;
+	void __iomem *base;
+
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_err("%s: failed to map clock registers\n", __func__);
+		goto err;
+	}
+
+	clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+	if (!clk_data)
+		goto err;
+
+	clk_data->base = base;
+	clk_table = kcalloc(nr_clks, sizeof(*clk_table), GFP_KERNEL);
+	if (!clk_table)
+		goto err_data;
+
+	clk_data->clk_data.clks = clk_table;
+	clk_data->clk_data.clk_num = nr_clks;
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data);
+	return clk_data;
+
+err_data:
+	kfree(clk_data);
+err:
+	return NULL;
+}
+
+static int s10_clkmgr_init(struct device_node *np)
+{
+	struct stratix10_clock_data *clk_data;
+
+	clk_data = __socfpga_s10_clk_init(np, STRATIX10_NUM_CLKS);
+	if (!clk_data)
+		return -ENOMEM;
+
+	s10_clk_register_pll(s10_pll_clks, ARRAY_SIZE(s10_pll_clks), clk_data);
+
+	s10_clk_register_c_perip(s10_main_perip_c_clks,
+				 ARRAY_SIZE(s10_main_perip_c_clks), clk_data);
+
+	s10_clk_register_cnt_perip(s10_main_perip_cnt_clks,
+				   ARRAY_SIZE(s10_main_perip_cnt_clks),
+				   clk_data);
+
+	s10_clk_register_gate(s10_gate_clks, ARRAY_SIZE(s10_gate_clks),
+			      clk_data);
+	return 0;
+}
+
+static int s10_clkmgr_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+
+	s10_clkmgr_init(np);
+
+	return 0;
+}
+
+static const struct of_device_id stratix10_clkmgr_match_table[] = {
+	{ .compatible = "intel,stratix10-clkmgr",
+	  .data = s10_clkmgr_init },
+	{ }
+};
+
+static struct platform_driver stratix10_clkmgr_driver = {
+	.probe		= s10_clkmgr_probe,
+	.driver		= {
+		.name	= "stratix10-clkmgr",
+		.of_match_table = stratix10_clkmgr_match_table,
+	},
+};
+
+static int __init s10_clk_init(void)
+{
+	return platform_driver_register(&stratix10_clkmgr_driver);
+}
+core_initcall(s10_clk_init);

drivers/clk/socfpga/clk.h

@@ -54,9 +54,11 @@ struct socfpga_gate_clk {
 	char *parent_name;
 	u32 fixed_div;
 	void __iomem *div_reg;
+	void __iomem *bypass_reg;
 	struct regmap *sys_mgr_base_addr;
 	u32 width;	/* only valid if div_reg != 0 */
 	u32 shift;	/* only valid if div_reg != 0 */
+	u32 bypass_shift;      /* only valid if bypass_reg != 0 */
 	u32 clk_phase[2];
 };
 
@@ -65,8 +67,10 @@ struct socfpga_periph_clk {
 	char *parent_name;
 	u32 fixed_div;
 	void __iomem *div_reg;
+	void __iomem *bypass_reg;
 	u32 width;      /* only valid if div_reg != 0 */
 	u32 shift;      /* only valid if div_reg != 0 */
+	u32 bypass_shift;      /* only valid if bypass_reg != 0 */
 };
 
 #endif /* SOCFPGA_CLK_H */

drivers/clk/socfpga/stratix10-clk.h

+/* SPDX-License-Identifier:    GPL-2.0 */
+/*
+ * Copyright (C) 2017, Intel Corporation
+ */
+
+#ifndef	__STRATIX10_CLK_H
+#define	__STRATIX10_CLK_H
+
+struct stratix10_clock_data {
+	struct clk_onecell_data	clk_data;
+	void __iomem		*base;
+};
+
+struct stratix10_pll_clock {
+	unsigned int		id;
+	const char		*name;
+	const char		*const *parent_names;
+	u8			num_parents;
+	unsigned long		flags;
+	unsigned long		offset;
+};
+
+struct stratix10_perip_c_clock {
+	unsigned int		id;
+	const char		*name;
+	const char		*parent_name;
+	const char		*const *parent_names;
+	u8			num_parents;
+	unsigned long		flags;
+	unsigned long		offset;
+};
+
+struct stratix10_perip_cnt_clock {
+	unsigned int		id;
+	const char		*name;
+	const char		*parent_name;
+	const char		*const *parent_names;
+	u8			num_parents;
+	unsigned long		flags;
+	unsigned long		offset;
+	u8			fixed_divider;
+	unsigned long		bypass_reg;
+	unsigned long		bypass_shift;
+};
+
+struct stratix10_gate_clock {
+	unsigned int		id;
+	const char		*name;
+	const char		*parent_name;
+	const char		*const *parent_names;
+	u8			num_parents;
+	unsigned long		flags;
+	unsigned long		gate_reg;
+	u8			gate_idx;
+	unsigned long		div_reg;
+	u8			div_offset;
+	u8			div_width;
+	unsigned long		bypass_reg;
+	u8			bypass_shift;
+	u8			fixed_div;
+};
+
+struct clk *s10_register_pll(const char *, const char *const *, u8,
+			     unsigned long, void __iomem *, unsigned long);
+
+struct clk *s10_register_periph(const char *, const char *,
+				const char * const *, u8, unsigned long,
+				void __iomem *, unsigned long);
+struct clk *s10_register_cnt_periph(const char *, const char *,
+				    const char * const *, u8,
+				    unsigned long, void __iomem *,
+				    unsigned long, u8, unsigned long,
+				    unsigned long);
+struct clk *s10_register_gate(const char *, const char *,
+			      const char * const *, u8,
+			      unsigned long, void __iomem *,
+			      unsigned long, unsigned long,
+			      unsigned long, unsigned long, u8,
+			      unsigned long, u8, u8);
+#endif	/* __STRATIX10_CLK_H */