[PATCH v11 2/8] drivers: clk: add fu740 support

[Green Wan <green.wan@sifive.com>]

Add fu740 support. One abstract layer is added for supporting
multiple chips such as fu540 and fu740.

Signed-off-by: Green Wan <green.wan@sifive.com>
---
 arch/riscv/cpu/fu540/Kconfig     |   2 +-
 drivers/clk/sifive/Kconfig       |   8 +-
 drivers/clk/sifive/Makefile      |   4 +-
 drivers/clk/sifive/fu540-prci.c  | 769 +------------------------------
 drivers/clk/sifive/fu540-prci.h  |  22 +
 drivers/clk/sifive/fu740-prci.c  | 158 +++++++
 drivers/clk/sifive/fu740-prci.h  |  22 +
 drivers/clk/sifive/sifive-prci.c | 733 +++++++++++++++++++++++++++++
 drivers/clk/sifive/sifive-prci.h | 323 +++++++++++++
 drivers/reset/Kconfig            |   2 +-
 10 files changed, 1288 insertions(+), 755 deletions(-)
 create mode 100644 drivers/clk/sifive/fu540-prci.h
 create mode 100644 drivers/clk/sifive/fu740-prci.c
 create mode 100644 drivers/clk/sifive/fu740-prci.h
 create mode 100644 drivers/clk/sifive/sifive-prci.c
 create mode 100644 drivers/clk/sifive/sifive-prci.h

diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
index dcf099447b..05463b2625 100644
--- a/arch/riscv/cpu/fu540/Kconfig
+++ b/arch/riscv/cpu/fu540/Kconfig
@@ -18,7 +18,7 @@ config SIFIVE_FU540
 	imply SPL_LOAD_FIT
 	imply SMP
 	imply CLK_SIFIVE
-	imply CLK_SIFIVE_FU540_PRCI
+	imply CLK_SIFIVE_PRCI
 	imply SIFIVE_SERIAL
 	imply MACB
 	imply MII
diff --git a/drivers/clk/sifive/Kconfig b/drivers/clk/sifive/Kconfig
index c4d0a1f9b1..20fc004b59 100644
--- a/drivers/clk/sifive/Kconfig
+++ b/drivers/clk/sifive/Kconfig
@@ -6,11 +6,11 @@ config CLK_SIFIVE
 	help
 	  SoC drivers for SiFive Linux-capable SoCs.
 
-config CLK_SIFIVE_FU540_PRCI
-	bool "PRCI driver for SiFive FU540 SoCs"
+config CLK_SIFIVE_PRCI
+	bool "PRCI driver for SiFive SoCs"
 	depends on CLK_SIFIVE
 	select CLK_ANALOGBITS_WRPLL_CLN28HPC
 	help
 	  Supports the Power Reset Clock interface (PRCI) IP block found in
-	  FU540 SoCs.  If this kernel is meant to run on a SiFive FU540 SoC,
-	  enable this driver.
+	  FU540/FU740 SoCs. If this kernel is meant to run on a SiFive FU540/
+	  FU740 SoCs, enable this driver.
diff --git a/drivers/clk/sifive/Makefile b/drivers/clk/sifive/Makefile
index b224279afb..51348b1ddc 100644
--- a/drivers/clk/sifive/Makefile
+++ b/drivers/clk/sifive/Makefile
@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0+
 
-obj-$(CONFIG_CLK_SIFIVE_FU540_PRCI)		+= fu540-prci.o
+obj-y += sifive-prci.o
+
+obj-$(CONFIG_CLK_SIFIVE_PRCI) += fu540-prci.o fu740-prci.o
diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c
index b3882d0b77..ceb2c6fab0 100644
--- a/drivers/clk/sifive/fu540-prci.c
+++ b/drivers/clk/sifive/fu540-prci.c
@@ -5,6 +5,8 @@
  * Copyright (C) 2018 SiFive, Inc.
  * Wesley Terpstra
  * Paul Walmsley
+ * Zong Li
+ * Pragnesh Patel
  *
  * 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
@@ -15,632 +17,48 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
- * The FU540 PRCI implements clock and reset control for the SiFive
- * FU540-C000 chip.   This driver assumes that it has sole control
- * over all PRCI resources.
- *
- * This driver is based on the PRCI driver written by Wesley Terpstra.
- *
- * Refer, commit 999529edf517ed75b56659d456d221b2ee56bb60 of:
- * https://github.com/riscv/riscv-linux
- *
  * References:
  * - SiFive FU540-C000 manual v1p0, Chapter 7 "Clocking and Reset"
  */
 
-#include <common.h>
-#include <clk-uclass.h>
-#include <clk.h>
-#include <div64.h>
-#include <dm.h>
-#include <dm/device.h>
-#include <dm/device_compat.h>
-#include <dm/uclass.h>
 #include <dt-bindings/clock/sifive-fu540-prci.h>
-#include <dt-bindings/reset/sifive-fu540-prci.h>
-#include <errno.h>
-#include <reset-uclass.h>
-#include <asm/io.h>
-#include <asm/arch/reset.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/math64.h>
-#include <linux/clk/analogbits-wrpll-cln28hpc.h>
-
-/*
- * EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects:
- *     hfclk and rtcclk
- */
-#define EXPECTED_CLK_PARENT_COUNT	2
-
-/*
- * Register offsets and bitmasks
- */
-
-/* COREPLLCFG0 */
-#define PRCI_COREPLLCFG0_OFFSET		0x4
-#define PRCI_COREPLLCFG0_DIVR_SHIFT	0
-#define PRCI_COREPLLCFG0_DIVR_MASK	(0x3f << PRCI_COREPLLCFG0_DIVR_SHIFT)
-#define PRCI_COREPLLCFG0_DIVF_SHIFT	6
-#define PRCI_COREPLLCFG0_DIVF_MASK	(0x1ff << PRCI_COREPLLCFG0_DIVF_SHIFT)
-#define PRCI_COREPLLCFG0_DIVQ_SHIFT	15
-#define PRCI_COREPLLCFG0_DIVQ_MASK	(0x7 << PRCI_COREPLLCFG0_DIVQ_SHIFT)
-#define PRCI_COREPLLCFG0_RANGE_SHIFT	18
-#define PRCI_COREPLLCFG0_RANGE_MASK	(0x7 << PRCI_COREPLLCFG0_RANGE_SHIFT)
-#define PRCI_COREPLLCFG0_BYPASS_SHIFT	24
-#define PRCI_COREPLLCFG0_BYPASS_MASK	(0x1 << PRCI_COREPLLCFG0_BYPASS_SHIFT)
-#define PRCI_COREPLLCFG0_FSE_SHIFT	25
-#define PRCI_COREPLLCFG0_FSE_MASK	(0x1 << PRCI_COREPLLCFG0_FSE_SHIFT)
-#define PRCI_COREPLLCFG0_LOCK_SHIFT	31
-#define PRCI_COREPLLCFG0_LOCK_MASK	(0x1 << PRCI_COREPLLCFG0_LOCK_SHIFT)
-
-/* COREPLLCFG1 */
-#define PRCI_COREPLLCFG1_OFFSET		0x8
-#define PRCI_COREPLLCFG1_CKE_SHIFT	31
-#define PRCI_COREPLLCFG1_CKE_MASK	(0x1 << PRCI_COREPLLCFG1_CKE_SHIFT)
-
-/* DDRPLLCFG0 */
-#define PRCI_DDRPLLCFG0_OFFSET		0xc
-#define PRCI_DDRPLLCFG0_DIVR_SHIFT	0
-#define PRCI_DDRPLLCFG0_DIVR_MASK	(0x3f << PRCI_DDRPLLCFG0_DIVR_SHIFT)
-#define PRCI_DDRPLLCFG0_DIVF_SHIFT	6
-#define PRCI_DDRPLLCFG0_DIVF_MASK	(0x1ff << PRCI_DDRPLLCFG0_DIVF_SHIFT)
-#define PRCI_DDRPLLCFG0_DIVQ_SHIFT	15
-#define PRCI_DDRPLLCFG0_DIVQ_MASK	(0x7 << PRCI_DDRPLLCFG0_DIVQ_SHIFT)
-#define PRCI_DDRPLLCFG0_RANGE_SHIFT	18
-#define PRCI_DDRPLLCFG0_RANGE_MASK	(0x7 << PRCI_DDRPLLCFG0_RANGE_SHIFT)
-#define PRCI_DDRPLLCFG0_BYPASS_SHIFT	24
-#define PRCI_DDRPLLCFG0_BYPASS_MASK	(0x1 << PRCI_DDRPLLCFG0_BYPASS_SHIFT)
-#define PRCI_DDRPLLCFG0_FSE_SHIFT	25
-#define PRCI_DDRPLLCFG0_FSE_MASK	(0x1 << PRCI_DDRPLLCFG0_FSE_SHIFT)
-#define PRCI_DDRPLLCFG0_LOCK_SHIFT	31
-#define PRCI_DDRPLLCFG0_LOCK_MASK	(0x1 << PRCI_DDRPLLCFG0_LOCK_SHIFT)
-
-/* DDRPLLCFG1 */
-#define PRCI_DDRPLLCFG1_OFFSET		0x10
-#define PRCI_DDRPLLCFG1_CKE_SHIFT	31
-#define PRCI_DDRPLLCFG1_CKE_MASK	(0x1 << PRCI_DDRPLLCFG1_CKE_SHIFT)
-
-/* GEMGXLPLLCFG0 */
-#define PRCI_GEMGXLPLLCFG0_OFFSET	0x1c
-#define PRCI_GEMGXLPLLCFG0_DIVR_SHIFT	0
-#define PRCI_GEMGXLPLLCFG0_DIVR_MASK	\
-			(0x3f << PRCI_GEMGXLPLLCFG0_DIVR_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_DIVF_SHIFT	6
-#define PRCI_GEMGXLPLLCFG0_DIVF_MASK	\
-			(0x1ff << PRCI_GEMGXLPLLCFG0_DIVF_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT	15
-#define PRCI_GEMGXLPLLCFG0_DIVQ_MASK	(0x7 << PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_RANGE_SHIFT	18
-#define PRCI_GEMGXLPLLCFG0_RANGE_MASK	\
-			(0x7 << PRCI_GEMGXLPLLCFG0_RANGE_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT 24
-#define PRCI_GEMGXLPLLCFG0_BYPASS_MASK	\
-			(0x1 << PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_FSE_SHIFT	25
-#define PRCI_GEMGXLPLLCFG0_FSE_MASK	\
-			(0x1 << PRCI_GEMGXLPLLCFG0_FSE_SHIFT)
-#define PRCI_GEMGXLPLLCFG0_LOCK_SHIFT	31
-#define PRCI_GEMGXLPLLCFG0_LOCK_MASK	(0x1 << PRCI_GEMGXLPLLCFG0_LOCK_SHIFT)
-
-/* GEMGXLPLLCFG1 */
-#define PRCI_GEMGXLPLLCFG1_OFFSET	0x20
-#define PRCI_GEMGXLPLLCFG1_CKE_SHIFT	31
-#define PRCI_GEMGXLPLLCFG1_CKE_MASK	(0x1 << PRCI_GEMGXLPLLCFG1_CKE_SHIFT)
-
-/* CORECLKSEL */
-#define PRCI_CORECLKSEL_OFFSET		0x24
-#define PRCI_CORECLKSEL_CORECLKSEL_SHIFT 0
-#define PRCI_CORECLKSEL_CORECLKSEL_MASK \
-			(0x1 << PRCI_CORECLKSEL_CORECLKSEL_SHIFT)
-
-/* DEVICESRESETREG */
-#define PRCI_DEVICESRESETREG_OFFSET	0x28
-#define PRCI_DEVICERESETCNT 5
-
-#define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK \
-			(0x1 << PRCI_RST_DDR_CTRL_N)
-#define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK \
-			(0x1 << PRCI_RST_DDR_AXI_N)
-#define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK \
-			(0x1 << PRCI_RST_DDR_AHB_N)
-#define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK \
-			(0x1 << PRCI_RST_DDR_PHY_N)
-#define PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK \
-			(0x1 << PRCI_RST_GEMGXL_N)
-
-/* CLKMUXSTATUSREG */
-#define PRCI_CLKMUXSTATUSREG_OFFSET	0x2c
-#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT 1
-#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK \
-			(0x1 << PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT)
-
-/* PROCMONCFG */
-#define PRCI_PROCMONCFG_OFFSET		0xF0
-#define PRCI_PROCMONCFG_CORE_CLOCK_SHIFT	24
-#define PRCI_PROCMONCFG_CORE_CLOCK_MASK \
-			(0x1 << PRCI_PROCMONCFG_CORE_CLOCK_SHIFT)
-
-/*
- * Private structures
- */
-
-/**
- * struct __prci_data - per-device-instance data
- * @va: base virtual address of the PRCI IP block
- * @parent: parent clk instance
- *
- * PRCI per-device instance data
- */
-struct __prci_data {
-	void *va;
-	struct clk parent_hfclk;
-	struct clk parent_rtcclk;
-};
-
-/**
- * struct __prci_wrpll_data - WRPLL configuration and integration data
- * @c: WRPLL current configuration record
- * @enable_bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL)
- * @disable_bypass: fn ptr to code to not bypass the WRPLL (or NULL)
- * @cfg0_offs: WRPLL CFG0 register offset (in bytes) from the PRCI base address
- * @cfg1_offs: WRPLL CFG1 register offset (in bytes) from the PRCI base address
- * @release_reset: fn ptr to code to release clock reset
- *
- * @enable_bypass and @disable_bypass are used for WRPLL instances
- * that contain a separate external glitchless clock mux downstream
- * from the PLL.  The WRPLL internal bypass mux is not glitchless.
- */
-struct __prci_wrpll_data {
-	struct wrpll_cfg c;
-	void (*enable_bypass)(struct __prci_data *pd);
-	void (*disable_bypass)(struct __prci_data *pd);
-	u8 cfg0_offs;
-	u8 cfg1_offs;
-	void (*release_reset)(struct __prci_data *pd);
-};
-
-struct __prci_clock;
-
-/* struct __prci_clock_ops - clock operations */
-struct __prci_clock_ops {
-	int (*set_rate)(struct __prci_clock *pc,
-			unsigned long rate,
-			unsigned long parent_rate);
-	unsigned long (*round_rate)(struct __prci_clock *pc,
-				    unsigned long rate,
-				    unsigned long *parent_rate);
-	unsigned long (*recalc_rate)(struct __prci_clock *pc,
-				     unsigned long parent_rate);
-	int (*enable_clk)(struct __prci_clock *pc, bool enable);
-};
-
-/**
- * struct __prci_clock - describes a clock device managed by PRCI
- * @name: user-readable clock name string - should match the manual
- * @parent_name: parent name for this clock
- * @ops: struct __prci_clock_ops for control
- * @pwd: WRPLL-specific data, associated with this clock (if not NULL)
- * @pd: PRCI-specific data associated with this clock (if not NULL)
- *
- * PRCI clock data.  Used by the PRCI driver to register PRCI-provided
- * clocks to the Linux clock infrastructure.
- */
-struct __prci_clock {
-	const char *name;
-	const char *parent_name;
-	const struct __prci_clock_ops *ops;
-	struct __prci_wrpll_data *pwd;
-	struct __prci_data *pd;
-};
-
-/*
- * Private functions
- */
-
-/**
- * __prci_readl() - read from a PRCI register
- * @pd: PRCI context
- * @offs: register offset to read from (in bytes, from PRCI base address)
- *
- * Read the register located@offset @offs from the base virtual
- * address of the PRCI register target described by @pd, and return
- * the value to the caller.
- *
- * Context: Any context.
- *
- * Return: the contents of the register described by @pd and @offs.
- */
-static u32 __prci_readl(struct __prci_data *pd, u32 offs)
-{
-	return readl(pd->va + offs);
-}
-
-static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd)
-{
-	writel(v, pd->va + offs);
-}
-
-/* WRPLL-related private functions */
-
-/**
- * __prci_wrpll_unpack() - unpack WRPLL configuration registers into parameters
- * @c: ptr to a struct wrpll_cfg record to write config into
- * @r: value read from the PRCI PLL configuration register
- *
- * Given a value @r read from an FU540 PRCI PLL configuration register,
- * split it into fields and populate it into the WRPLL configuration record
- * pointed to by @c.
- *
- * The COREPLLCFG0 macros are used below, but the other *PLLCFG0 macros
- * have the same register layout.
- *
- * Context: Any context.
- */
-static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r)
-{
-	u32 v;
-
-	v = r & PRCI_COREPLLCFG0_DIVR_MASK;
-	v >>= PRCI_COREPLLCFG0_DIVR_SHIFT;
-	c->divr = v;
-
-	v = r & PRCI_COREPLLCFG0_DIVF_MASK;
-	v >>= PRCI_COREPLLCFG0_DIVF_SHIFT;
-	c->divf = v;
-
-	v = r & PRCI_COREPLLCFG0_DIVQ_MASK;
-	v >>= PRCI_COREPLLCFG0_DIVQ_SHIFT;
-	c->divq = v;
-
-	v = r & PRCI_COREPLLCFG0_RANGE_MASK;
-	v >>= PRCI_COREPLLCFG0_RANGE_SHIFT;
-	c->range = v;
-
-	c->flags &= (WRPLL_FLAGS_INT_FEEDBACK_MASK |
-		     WRPLL_FLAGS_EXT_FEEDBACK_MASK);
-
-	/* external feedback mode not supported */
-	c->flags |= WRPLL_FLAGS_INT_FEEDBACK_MASK;
-}
-
-/**
- * __prci_wrpll_pack() - pack PLL configuration parameters into a register value
- * @c: pointer to a struct wrpll_cfg record containing the PLL's cfg
- *
- * Using a set of WRPLL configuration values pointed to by @c,
- * assemble a PRCI PLL configuration register value, and return it to
- * the caller.
- *
- * Context: Any context.  Caller must ensure that the contents of the
- *          record pointed to by @c do not change during the execution
- *          of this function.
- *
- * Returns: a value suitable for writing into a PRCI PLL configuration
- *          register
- */
-static u32 __prci_wrpll_pack(const struct wrpll_cfg *c)
-{
-	u32 r = 0;
-
-	r |= c->divr << PRCI_COREPLLCFG0_DIVR_SHIFT;
-	r |= c->divf << PRCI_COREPLLCFG0_DIVF_SHIFT;
-	r |= c->divq << PRCI_COREPLLCFG0_DIVQ_SHIFT;
-	r |= c->range << PRCI_COREPLLCFG0_RANGE_SHIFT;
-
-	/* external feedback mode not supported */
-	r |= PRCI_COREPLLCFG0_FSE_MASK;
-
-	return r;
-}
-
-/**
- * __prci_wrpll_read_cfg0() - read the WRPLL configuration from the PRCI
- * @pd: PRCI context
- * @pwd: PRCI WRPLL metadata
- *
- * Read the current configuration of the PLL identified by @pwd from
- * the PRCI identified by @pd, and store it into the local configuration
- * cache in @pwd.
- *
- * Context: Any context.  Caller must prevent the records pointed to by
- *          @pd and @pwd from changing during execution.
- */
-static void __prci_wrpll_read_cfg0(struct __prci_data *pd,
-				   struct __prci_wrpll_data *pwd)
-{
-	__prci_wrpll_unpack(&pwd->c, __prci_readl(pd, pwd->cfg0_offs));
-}
-
-/**
- * __prci_wrpll_write_cfg0() - write WRPLL configuration into the PRCI
- * @pd: PRCI context
- * @pwd: PRCI WRPLL metadata
- * @c: WRPLL configuration record to write
- *
- * Write the WRPLL configuration described by @c into the WRPLL
- * configuration register identified by @pwd in the PRCI instance
- * described by @c.  Make a cached copy of the WRPLL's current
- * configuration so it can be used by other code.
- *
- * Context: Any context.  Caller must prevent the records pointed to by
- *          @pd and @pwd from changing during execution.
- */
-static void __prci_wrpll_write_cfg0(struct __prci_data *pd,
-				    struct __prci_wrpll_data *pwd,
-				    struct wrpll_cfg *c)
-{
-	__prci_writel(__prci_wrpll_pack(c), pwd->cfg0_offs, pd);
-
-	memcpy(&pwd->c, c, sizeof(*c));
-}
-
-/**
- * __prci_wrpll_write_cfg1() - write Clock enable/disable configuration
- * into the PRCI
- * @pd: PRCI context
- * @pwd: PRCI WRPLL metadata
- * @enable: Clock enable or disable value
- */
-static void __prci_wrpll_write_cfg1(struct __prci_data *pd,
-				    struct __prci_wrpll_data *pwd,
-				    u32 enable)
-{
-	__prci_writel(enable, pwd->cfg1_offs, pd);
-}
-
-/* Core clock mux control */
-
-/**
- * __prci_coreclksel_use_hfclk() - switch the CORECLK mux to output HFCLK
- * @pd: struct __prci_data * for the PRCI containing the CORECLK mux reg
- *
- * Switch the CORECLK mux to the HFCLK input source; return once complete.
- *
- * Context: Any context.  Caller must prevent concurrent changes to the
- *          PRCI_CORECLKSEL_OFFSET register.
- */
-static void __prci_coreclksel_use_hfclk(struct __prci_data *pd)
-{
-	u32 r;
-
-	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
-	r |= PRCI_CORECLKSEL_CORECLKSEL_MASK;
-	__prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
-
-	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET); /* barrier */
-}
-
-/**
- * __prci_coreclksel_use_corepll() - switch the CORECLK mux to output COREPLL
- * @pd: struct __prci_data * for the PRCI containing the CORECLK mux reg
- *
- * Switch the CORECLK mux to the PLL output clock; return once complete.
- *
- * Context: Any context.  Caller must prevent concurrent changes to the
- *          PRCI_CORECLKSEL_OFFSET register.
- */
-static void __prci_coreclksel_use_corepll(struct __prci_data *pd)
-{
-	u32 r;
-
-	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
-	r &= ~PRCI_CORECLKSEL_CORECLKSEL_MASK;
-	__prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
-
-	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET); /* barrier */
-}
-
-static unsigned long sifive_fu540_prci_wrpll_recalc_rate(
-						struct __prci_clock *pc,
-						unsigned long parent_rate)
-{
-	struct __prci_wrpll_data *pwd = pc->pwd;
 
-	return wrpll_calc_output_rate(&pwd->c, parent_rate);
-}
-
-static unsigned long sifive_fu540_prci_wrpll_round_rate(
-						struct __prci_clock *pc,
-						unsigned long rate,
-						unsigned long *parent_rate)
-{
-	struct __prci_wrpll_data *pwd = pc->pwd;
-	struct wrpll_cfg c;
-
-	memcpy(&c, &pwd->c, sizeof(c));
-
-	wrpll_configure_for_rate(&c, rate, *parent_rate);
-
-	return wrpll_calc_output_rate(&c, *parent_rate);
-}
-
-static int sifive_fu540_prci_wrpll_set_rate(struct __prci_clock *pc,
-					    unsigned long rate,
-					    unsigned long parent_rate)
-{
-	struct __prci_wrpll_data *pwd = pc->pwd;
-	struct __prci_data *pd = pc->pd;
-	int r;
-
-	r = wrpll_configure_for_rate(&pwd->c, rate, parent_rate);
-	if (r)
-		return r;
-
-	if (pwd->enable_bypass)
-		pwd->enable_bypass(pd);
-
-	__prci_wrpll_write_cfg0(pd, pwd, &pwd->c);
-
-	udelay(wrpll_calc_max_lock_us(&pwd->c));
-
-	if (pwd->disable_bypass)
-		pwd->disable_bypass(pd);
-
-	return 0;
-}
-
-static int sifive_fu540_prci_clock_enable(struct __prci_clock *pc, bool enable)
-{
-	struct __prci_wrpll_data *pwd = pc->pwd;
-	struct __prci_data *pd = pc->pd;
-
-	if (enable) {
-		__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
-
-		if (pwd->release_reset)
-			pwd->release_reset(pd);
-	} else {
-		u32 r;
-
-		r = __prci_readl(pd, pwd->cfg1_offs);
-		r &= ~PRCI_COREPLLCFG1_CKE_MASK;
-
-		__prci_wrpll_write_cfg1(pd, pwd, r);
-	}
-
-	return 0;
-}
-
-static const struct __prci_clock_ops sifive_fu540_prci_wrpll_clk_ops = {
-	.set_rate = sifive_fu540_prci_wrpll_set_rate,
-	.round_rate = sifive_fu540_prci_wrpll_round_rate,
-	.recalc_rate = sifive_fu540_prci_wrpll_recalc_rate,
-	.enable_clk = sifive_fu540_prci_clock_enable,
-};
-
-/* TLCLKSEL clock integration */
-
-static unsigned long sifive_fu540_prci_tlclksel_recalc_rate(
-						struct __prci_clock *pc,
-						unsigned long parent_rate)
-{
-	struct __prci_data *pd = pc->pd;
-	u32 v;
-	u8 div;
-
-	v = __prci_readl(pd, PRCI_CLKMUXSTATUSREG_OFFSET);
-	v &= PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK;
-	div = v ? 1 : 2;
-
-	return div_u64(parent_rate, div);
-}
-
-static const struct __prci_clock_ops sifive_fu540_prci_tlclksel_clk_ops = {
-	.recalc_rate = sifive_fu540_prci_tlclksel_recalc_rate,
-};
-
-static int __prci_consumer_reset(const char *rst_name, bool trigger)
-{
-	struct udevice *dev;
-	struct reset_ctl rst_sig;
-	int ret;
-
-	ret = uclass_get_device_by_driver(UCLASS_RESET,
-					  DM_DRIVER_GET(sifive_reset),
-					  &dev);
-	if (ret) {
-		dev_err(dev, "Reset driver not found: %d\n", ret);
-		return ret;
-	}
-
-	ret = reset_get_by_name(dev, rst_name, &rst_sig);
-	if (ret) {
-		dev_err(dev, "failed to get %s reset\n", rst_name);
-		return ret;
-	}
-
-	if (reset_valid(&rst_sig)) {
-		if (trigger)
-			ret = reset_deassert(&rst_sig);
-		else
-			ret = reset_assert(&rst_sig);
-		if (ret) {
-			dev_err(dev, "failed to trigger reset id = %ld\n",
-				rst_sig.id);
-			return ret;
-		}
-	}
-
-	return ret;
-}
-
-/**
- * __prci_ddr_release_reset() - Release DDR reset
- * @pd: struct __prci_data * for the PRCI containing the DDRCLK mux reg
- *
- */
-static void __prci_ddr_release_reset(struct __prci_data *pd)
-{
-	/* Release DDR ctrl reset */
-	__prci_consumer_reset("ddr_ctrl", true);
-
-	/* HACK to get the '1 full controller clock cycle'. */
-	asm volatile ("fence");
-
-	/* Release DDR AXI reset */
-	__prci_consumer_reset("ddr_axi", true);
-
-	/* Release DDR AHB reset */
-	__prci_consumer_reset("ddr_ahb", true);
-
-	/* Release DDR PHY reset */
-	__prci_consumer_reset("ddr_phy", true);
-
-	/* HACK to get the '1 full controller clock cycle'. */
-	asm volatile ("fence");
-
-	/*
-	 * These take like 16 cycles to actually propagate. We can't go sending
-	 * stuff before they come out of reset. So wait.
-	 */
-	for (int i = 0; i < 256; i++)
-		asm volatile ("nop");
-}
-
-/**
- * __prci_ethernet_release_reset() - Release ethernet reset
- * @pd: struct __prci_data * for the PRCI containing the Ethernet CLK mux reg
- *
- */
-static void __prci_ethernet_release_reset(struct __prci_data *pd)
-{
-	/* Release GEMGXL reset */
-	__prci_consumer_reset("gemgxl_reset", true);
-
-	/* Procmon => core clock */
-	__prci_writel(PRCI_PROCMONCFG_CORE_CLOCK_MASK, PRCI_PROCMONCFG_OFFSET,
-		      pd);
-}
-
-/*
- * PRCI integration data for each WRPLL instance
- */
+#include "sifive-prci.h"
 
+/* PRCI integration data for each WRPLL instance */
 static struct __prci_wrpll_data __prci_corepll_data = {
 	.cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
 	.cfg1_offs = PRCI_COREPLLCFG1_OFFSET,
-	.enable_bypass = __prci_coreclksel_use_hfclk,
-	.disable_bypass = __prci_coreclksel_use_corepll,
+	.enable_bypass = sifive_prci_coreclksel_use_hfclk,
+	.disable_bypass = sifive_prci_coreclksel_use_corepll,
 };
 
 static struct __prci_wrpll_data __prci_ddrpll_data = {
 	.cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
 	.cfg1_offs = PRCI_DDRPLLCFG1_OFFSET,
-	.release_reset = __prci_ddr_release_reset,
+	.release_reset = sifive_prci_ddr_release_reset,
 };
 
 static struct __prci_wrpll_data __prci_gemgxlpll_data = {
 	.cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
 	.cfg1_offs = PRCI_GEMGXLPLLCFG1_OFFSET,
-	.release_reset = __prci_ethernet_release_reset,
+	.release_reset = sifive_prci_ethernet_release_reset,
 };
 
-/*
- * List of clock controls provided by the PRCI
- */
+/* Linux clock framework integration */
+static const struct __prci_clock_ops sifive_fu540_prci_wrpll_clk_ops = {
+	.set_rate = sifive_prci_wrpll_set_rate,
+	.round_rate = sifive_prci_wrpll_round_rate,
+	.recalc_rate = sifive_prci_wrpll_recalc_rate,
+	.enable_clk = sifive_prci_clock_enable,
+};
 
-static struct __prci_clock __prci_init_clocks[] = {
+static const struct __prci_clock_ops sifive_fu540_prci_tlclksel_clk_ops = {
+	.recalc_rate = sifive_prci_tlclksel_recalc_rate,
+};
+
+/* List of clock controls provided by the PRCI */
+struct __prci_clock __prci_init_clocks_fu540[] = {
 	[PRCI_CLK_COREPLL] = {
 		.name = "corepll",
 		.parent_name = "hfclk",
@@ -665,148 +83,3 @@ static struct __prci_clock __prci_init_clocks[] = {
 		.ops = &sifive_fu540_prci_tlclksel_clk_ops,
 	},
 };
-
-static ulong sifive_fu540_prci_parent_rate(struct __prci_clock *pc)
-{
-	ulong parent_rate;
-	struct __prci_clock *p;
-
-	if (strcmp(pc->parent_name, "corepll") == 0) {
-		p = &__prci_init_clocks[PRCI_CLK_COREPLL];
-		if (!p->pd || !p->ops->recalc_rate)
-			return -ENXIO;
-
-		return p->ops->recalc_rate(p, sifive_fu540_prci_parent_rate(p));
-	}
-
-	if (strcmp(pc->parent_name, "rtcclk") == 0)
-		parent_rate = clk_get_rate(&pc->pd->parent_rtcclk);
-	else
-		parent_rate = clk_get_rate(&pc->pd->parent_hfclk);
-
-	return parent_rate;
-}
-
-static ulong sifive_fu540_prci_get_rate(struct clk *clk)
-{
-	struct __prci_clock *pc;
-
-	if (ARRAY_SIZE(__prci_init_clocks) <= clk->id)
-		return -ENXIO;
-
-	pc = &__prci_init_clocks[clk->id];
-	if (!pc->pd || !pc->ops->recalc_rate)
-		return -ENXIO;
-
-	return pc->ops->recalc_rate(pc, sifive_fu540_prci_parent_rate(pc));
-}
-
-static ulong sifive_fu540_prci_set_rate(struct clk *clk, ulong rate)
-{
-	int err;
-	struct __prci_clock *pc;
-
-	if (ARRAY_SIZE(__prci_init_clocks) <= clk->id)
-		return -ENXIO;
-
-	pc = &__prci_init_clocks[clk->id];
-	if (!pc->pd || !pc->ops->set_rate)
-		return -ENXIO;
-
-	err = pc->ops->set_rate(pc, rate, sifive_fu540_prci_parent_rate(pc));
-	if (err)
-		return err;
-
-	return rate;
-}
-
-static int sifive_fu540_prci_enable(struct clk *clk)
-{
-	struct __prci_clock *pc;
-	int ret = 0;
-
-	if (ARRAY_SIZE(__prci_init_clocks) <= clk->id)
-		return -ENXIO;
-
-	pc = &__prci_init_clocks[clk->id];
-	if (!pc->pd)
-		return -ENXIO;
-
-	if (pc->ops->enable_clk)
-		ret = pc->ops->enable_clk(pc, 1);
-
-	return ret;
-}
-
-static int sifive_fu540_prci_disable(struct clk *clk)
-{
-	struct __prci_clock *pc;
-	int ret = 0;
-
-	if (ARRAY_SIZE(__prci_init_clocks) <= clk->id)
-		return -ENXIO;
-
-	pc = &__prci_init_clocks[clk->id];
-	if (!pc->pd)
-		return -ENXIO;
-
-	if (pc->ops->enable_clk)
-		ret = pc->ops->enable_clk(pc, 0);
-
-	return ret;
-}
-
-static int sifive_fu540_prci_probe(struct udevice *dev)
-{
-	int i, err;
-	struct __prci_clock *pc;
-	struct __prci_data *pd = dev_get_priv(dev);
-
-	pd->va = (void *)dev_read_addr(dev);
-	if (IS_ERR(pd->va))
-		return PTR_ERR(pd->va);
-
-	err = clk_get_by_index(dev, 0, &pd->parent_hfclk);
-	if (err)
-		return err;
-
-	err = clk_get_by_index(dev, 1, &pd->parent_rtcclk);
-	if (err)
-		return err;
-
-	for (i = 0; i < ARRAY_SIZE(__prci_init_clocks); ++i) {
-		pc = &__prci_init_clocks[i];
-		pc->pd = pd;
-		if (pc->pwd)
-			__prci_wrpll_read_cfg0(pd, pc->pwd);
-	}
-
-	return 0;
-}
-
-static struct clk_ops sifive_fu540_prci_ops = {
-	.set_rate = sifive_fu540_prci_set_rate,
-	.get_rate = sifive_fu540_prci_get_rate,
-	.enable = sifive_fu540_prci_enable,
-	.disable = sifive_fu540_prci_disable,
-};
-
-static int sifive_fu540_clk_bind(struct udevice *dev)
-{
-	return sifive_reset_bind(dev, PRCI_DEVICERESETCNT);
-}
-
-static const struct udevice_id sifive_fu540_prci_ids[] = {
-	{ .compatible = "sifive,fu540-c000-prci" },
-	{ }
-};
-
-U_BOOT_DRIVER(sifive_fu540_prci) = {
-	.name = "sifive-fu540-prci",
-	.id = UCLASS_CLK,
-	.of_match = sifive_fu540_prci_ids,
-	.probe = sifive_fu540_prci_probe,
-	.ops = &sifive_fu540_prci_ops,
-	.priv_auto	= sizeof(struct __prci_data),
-	.bind = sifive_fu540_clk_bind,
-};
diff --git a/drivers/clk/sifive/fu540-prci.h b/drivers/clk/sifive/fu540-prci.h
new file mode 100644
index 0000000000..113301107d
--- /dev/null
+++ b/drivers/clk/sifive/fu540-prci.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2021 SiFive, Inc.
+ * Zong Li
+ * Pragnesh Patel
+ */
+
+#ifndef __SIFIVE_CLK_FU540_PRCI_H
+#define __SIFIVE_CLK_FU540_PRCI_H
+
+#include "sifive-prci.h"
+
+#define NUM_CLOCK_FU540	4
+
+extern struct __prci_clock __prci_init_clocks_fu540[NUM_CLOCK_FU540];
+
+static const struct prci_clk_desc prci_clk_fu540 = {
+	.clks = __prci_init_clocks_fu540,
+	.num_clks = ARRAY_SIZE(__prci_init_clocks_fu540),
+};
+
+#endif /* __SIFIVE_CLK_FU540_PRCI_H */
diff --git a/drivers/clk/sifive/fu740-prci.c b/drivers/clk/sifive/fu740-prci.c
new file mode 100644
index 0000000000..9a642c1c99
--- /dev/null
+++ b/drivers/clk/sifive/fu740-prci.c
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2021 SiFive, Inc.
+ * Wesley Terpstra
+ * Paul Walmsley
+ * Zong Li
+ * Pragnesh Patel
+ *
+ * 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 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 <dt-bindings/clock/sifive-fu740-prci.h>
+#include "sifive-prci.h"
+#include <asm/io.h>
+
+int sifive_prci_fu740_pciauxclk_enable(struct __prci_clock *pc, bool enable)
+{
+	struct __prci_wrpll_data *pwd = pc->pwd;
+	struct __prci_data *pd = pc->pd;
+	u32 v;
+
+	if (pwd->cfg1_offs != PRCI_PCIEAUXCFG1_OFFSET)
+		return -EINVAL;
+
+	v = readl(pd->va + pwd->cfg1_offs);
+	v = enable ? (v | PRCI_PCIEAUXCFG1_MASK) : (v & ~PRCI_PCIEAUXCFG1_MASK);
+	writel(v, pd->va + pwd->cfg1_offs);
+
+	return 0;
+}
+
+/* PRCI integration data for each WRPLL instance */
+static struct __prci_wrpll_data __prci_corepll_data = {
+	.cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_COREPLLCFG1_OFFSET,
+	.enable_bypass = sifive_prci_coreclksel_use_hfclk,
+	.disable_bypass = sifive_prci_coreclksel_use_final_corepll,
+};
+
+static struct __prci_wrpll_data __prci_ddrpll_data = {
+	.cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_DDRPLLCFG1_OFFSET,
+	.release_reset = sifive_prci_ddr_release_reset,
+};
+
+static struct __prci_wrpll_data __prci_gemgxlpll_data = {
+	.cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_GEMGXLPLLCFG1_OFFSET,
+	.release_reset = sifive_prci_ethernet_release_reset,
+};
+
+static struct __prci_wrpll_data __prci_dvfscorepll_data = {
+	.cfg0_offs = PRCI_DVFSCOREPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_DVFSCOREPLLCFG1_OFFSET,
+	.enable_bypass = sifive_prci_corepllsel_use_corepll,
+	.disable_bypass = sifive_prci_corepllsel_use_dvfscorepll,
+};
+
+static struct __prci_wrpll_data __prci_hfpclkpll_data = {
+	.cfg0_offs = PRCI_HFPCLKPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_HFPCLKPLLCFG1_OFFSET,
+	.enable_bypass = sifive_prci_hfpclkpllsel_use_hfclk,
+	.disable_bypass = sifive_prci_hfpclkpllsel_use_hfpclkpll,
+};
+
+static struct __prci_wrpll_data __prci_cltxpll_data = {
+	.cfg0_offs = PRCI_CLTXPLLCFG0_OFFSET,
+	.cfg1_offs = PRCI_CLTXPLLCFG1_OFFSET,
+	.release_reset = sifive_prci_cltx_release_reset,
+};
+
+static struct __prci_wrpll_data __prci_pcieaux_data = {
+	.cfg1_offs = PRCI_PCIEAUXCFG1_OFFSET,
+};
+
+/* Linux clock framework integration */
+
+static const struct __prci_clock_ops sifive_fu740_prci_wrpll_clk_ops = {
+	.set_rate = sifive_prci_wrpll_set_rate,
+	.round_rate = sifive_prci_wrpll_round_rate,
+	.recalc_rate = sifive_prci_wrpll_recalc_rate,
+	.enable_clk = sifive_prci_clock_enable,
+};
+
+static const struct __prci_clock_ops sifive_fu740_prci_tlclksel_clk_ops = {
+	.recalc_rate = sifive_prci_tlclksel_recalc_rate,
+};
+
+static const struct __prci_clock_ops sifive_fu740_prci_hfpclkplldiv_clk_ops = {
+	.recalc_rate = sifive_prci_hfpclkplldiv_recalc_rate,
+};
+
+static const struct __prci_clock_ops sifive_fu740_prci_pcieaux_clk_ops = {
+	.enable_clk = sifive_prci_fu740_pciauxclk_enable,
+};
+
+/* List of clock controls provided by the PRCI */
+struct __prci_clock __prci_init_clocks_fu740[] = {
+	[PRCI_CLK_COREPLL] = {
+		.name = "corepll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_corepll_data,
+	},
+	[PRCI_CLK_DDRPLL] = {
+		.name = "ddrpll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_ddrpll_data,
+	},
+	[PRCI_CLK_GEMGXLPLL] = {
+		.name = "gemgxlpll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_gemgxlpll_data,
+	},
+	[PRCI_CLK_DVFSCOREPLL] = {
+		.name = "dvfscorepll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_dvfscorepll_data,
+	},
+	[PRCI_CLK_HFPCLKPLL] = {
+		.name = "hfpclkpll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_hfpclkpll_data,
+	},
+	[PRCI_CLK_CLTXPLL] = {
+		.name = "cltxpll",
+		.parent_name = "hfclk",
+		.ops = &sifive_fu740_prci_wrpll_clk_ops,
+		.pwd = &__prci_cltxpll_data,
+	},
+	[PRCI_CLK_TLCLK] = {
+		.name = "tlclk",
+		.parent_name = "corepll",
+		.ops = &sifive_fu740_prci_tlclksel_clk_ops,
+	},
+	[PRCI_CLK_PCLK] = {
+		.name = "pclk",
+		.parent_name = "hfpclkpll",
+		.ops = &sifive_fu740_prci_hfpclkplldiv_clk_ops,
+	},
+	[PRCI_CLK_PCIEAUX] {
+		.name = "pciaux",
+		.parent_name = "",
+		.ops = &sifive_fu740_prci_pcieaux_clk_ops,
+		.pwd = &__prci_pcieaux_data,
+	}
+};
diff --git a/drivers/clk/sifive/fu740-prci.h b/drivers/clk/sifive/fu740-prci.h
new file mode 100644
index 0000000000..b74f078906
--- /dev/null
+++ b/drivers/clk/sifive/fu740-prci.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2021 SiFive, Inc.
+ * Zong Li
+ * Pragnesh Patel
+ */
+
+#ifndef __SIFIVE_CLK_FU740_PRCI_H
+#define __SIFIVE_CLK_FU740_PRCI_H
+
+#include "sifive-prci.h"
+
+#define NUM_CLOCK_FU740		9
+
+extern struct __prci_clock __prci_init_clocks_fu740[NUM_CLOCK_FU740];
+
+static const struct prci_clk_desc prci_clk_fu740 = {
+	.clks = __prci_init_clocks_fu740,
+	.num_clks = ARRAY_SIZE(__prci_init_clocks_fu740),
+};
+
+#endif /* __SIFIVE_CLK_FU740_PRCI_H */
diff --git a/drivers/clk/sifive/sifive-prci.c b/drivers/clk/sifive/sifive-prci.c
new file mode 100644
index 0000000000..cd1acb9442
--- /dev/null
+++ b/drivers/clk/sifive/sifive-prci.c
@@ -0,0 +1,733 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2021 SiFive, Inc.
+ * Wesley Terpstra
+ * Paul Walmsley
+ * Zong Li
+ * Pragnesh Patel
+ *
+ * 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 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.
+ *
+ * The PRCI implements clock and reset control for the SiFive chip.
+ * This driver assumes that it has sole control over all PRCI resources.
+ *
+ * This driver is based on the PRCI driver written by Wesley Terpstra:
+ * https://github.com/riscv/riscv-linux/commit/999529edf517ed75b56659d456d221b2ee56bb60
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <clk.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <asm/arch/reset.h>
+#include <linux/delay.h>
+#include <linux/math64.h>
+#include <dt-bindings/clock/sifive-fu740-prci.h>
+
+#include "fu540-prci.h"
+#include "fu740-prci.h"
+
+/*
+ * Private functions
+ */
+
+/**
+ * __prci_readl() - read from a PRCI register
+ * @pd: PRCI context
+ * @offs: register offset to read from (in bytes, from PRCI base address)
+ *
+ * Read the register located at offset @offs from the base virtual
+ * address of the PRCI register target described by @pd, and return
+ * the value to the caller.
+ *
+ * Context: Any context.
+ *
+ * Return: the contents of the register described by @pd and @offs.
+ */
+static u32 __prci_readl(struct __prci_data *pd, u32 offs)
+{
+	return readl(pd->va + offs);
+}
+
+static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd)
+{
+	writel(v, pd->va + offs);
+}
+
+/* WRPLL-related private functions */
+
+/**
+ * __prci_wrpll_unpack() - unpack WRPLL configuration registers into parameters
+ * @c: ptr to a struct wrpll_cfg record to write config into
+ * @r: value read from the PRCI PLL configuration register
+ *
+ * Given a value @r read from an FU540 PRCI PLL configuration register,
+ * split it into fields and populate it into the WRPLL configuration record
+ * pointed to by @c.
+ *
+ * The COREPLLCFG0 macros are used below, but the other *PLLCFG0 macros
+ * have the same register layout.
+ *
+ * Context: Any context.
+ */
+static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r)
+{
+	u32 v;
+
+	v = r & PRCI_COREPLLCFG0_DIVR_MASK;
+	v >>= PRCI_COREPLLCFG0_DIVR_SHIFT;
+	c->divr = v;
+
+	v = r & PRCI_COREPLLCFG0_DIVF_MASK;
+	v >>= PRCI_COREPLLCFG0_DIVF_SHIFT;
+	c->divf = v;
+
+	v = r & PRCI_COREPLLCFG0_DIVQ_MASK;
+	v >>= PRCI_COREPLLCFG0_DIVQ_SHIFT;
+	c->divq = v;
+
+	v = r & PRCI_COREPLLCFG0_RANGE_MASK;
+	v >>= PRCI_COREPLLCFG0_RANGE_SHIFT;
+	c->range = v;
+
+	c->flags &= (WRPLL_FLAGS_INT_FEEDBACK_MASK |
+		     WRPLL_FLAGS_EXT_FEEDBACK_MASK);
+
+	/* external feedback mode not supported */
+	c->flags |= WRPLL_FLAGS_INT_FEEDBACK_MASK;
+}
+
+/**
+ * __prci_wrpll_pack() - pack PLL configuration parameters into a register value
+ * @c: pointer to a struct wrpll_cfg record containing the PLL's cfg
+ *
+ * Using a set of WRPLL configuration values pointed to by @c,
+ * assemble a PRCI PLL configuration register value, and return it to
+ * the caller.
+ *
+ * Context: Any context.  Caller must ensure that the contents of the
+ *          record pointed to by @c do not change during the execution
+ *          of this function.
+ *
+ * Returns: a value suitable for writing into a PRCI PLL configuration
+ *          register
+ */
+static u32 __prci_wrpll_pack(const struct wrpll_cfg *c)
+{
+	u32 r = 0;
+
+	r |= c->divr << PRCI_COREPLLCFG0_DIVR_SHIFT;
+	r |= c->divf << PRCI_COREPLLCFG0_DIVF_SHIFT;
+	r |= c->divq << PRCI_COREPLLCFG0_DIVQ_SHIFT;
+	r |= c->range << PRCI_COREPLLCFG0_RANGE_SHIFT;
+
+	/* external feedback mode not supported */
+	r |= PRCI_COREPLLCFG0_FSE_MASK;
+
+	return r;
+}
+
+/**
+ * __prci_wrpll_read_cfg0() - read the WRPLL configuration from the PRCI
+ * @pd: PRCI context
+ * @pwd: PRCI WRPLL metadata
+ *
+ * Read the current configuration of the PLL identified by @pwd from
+ * the PRCI identified by @pd, and store it into the local configuration
+ * cache in @pwd.
+ *
+ * Context: Any context.  Caller must prevent the records pointed to by
+ *          @pd and @pwd from changing during execution.
+ */
+static void __prci_wrpll_read_cfg0(struct __prci_data *pd,
+				   struct __prci_wrpll_data *pwd)
+{
+	__prci_wrpll_unpack(&pwd->c, __prci_readl(pd, pwd->cfg0_offs));
+}
+
+/**
+ * __prci_wrpll_write_cfg0() - write WRPLL configuration into the PRCI
+ * @pd: PRCI context
+ * @pwd: PRCI WRPLL metadata
+ * @c: WRPLL configuration record to write
+ *
+ * Write the WRPLL configuration described by @c into the WRPLL
+ * configuration register identified by @pwd in the PRCI instance
+ * described by @c.  Make a cached copy of the WRPLL's current
+ * configuration so it can be used by other code.
+ *
+ * Context: Any context.  Caller must prevent the records pointed to by
+ *          @pd and @pwd from changing during execution.
+ */
+static void __prci_wrpll_write_cfg0(struct __prci_data *pd,
+				    struct __prci_wrpll_data *pwd,
+				    struct wrpll_cfg *c)
+{
+	__prci_writel(__prci_wrpll_pack(c), pwd->cfg0_offs, pd);
+
+	memcpy(&pwd->c, c, sizeof(*c));
+}
+
+/**
+ * __prci_wrpll_write_cfg1() - write Clock enable/disable configuration
+ * into the PRCI
+ * @pd: PRCI context
+ * @pwd: PRCI WRPLL metadata
+ * @enable: Clock enable or disable value
+ */
+static void __prci_wrpll_write_cfg1(struct __prci_data *pd,
+				    struct __prci_wrpll_data *pwd,
+				    u32 enable)
+{
+	__prci_writel(enable, pwd->cfg1_offs, pd);
+}
+
+unsigned long sifive_prci_wrpll_recalc_rate(struct __prci_clock *pc,
+					    unsigned long parent_rate)
+{
+	struct __prci_wrpll_data *pwd = pc->pwd;
+
+	return wrpll_calc_output_rate(&pwd->c, parent_rate);
+}
+
+unsigned long sifive_prci_wrpll_round_rate(struct __prci_clock *pc,
+					   unsigned long rate,
+					   unsigned long *parent_rate)
+{
+	struct __prci_wrpll_data *pwd = pc->pwd;
+	struct wrpll_cfg c;
+
+	memcpy(&c, &pwd->c, sizeof(c));
+
+	wrpll_configure_for_rate(&c, rate, *parent_rate);
+
+	return wrpll_calc_output_rate(&c, *parent_rate);
+}
+
+int sifive_prci_wrpll_set_rate(struct __prci_clock *pc,
+			       unsigned long rate,
+			       unsigned long parent_rate)
+{
+	struct __prci_wrpll_data *pwd = pc->pwd;
+	struct __prci_data *pd = pc->pd;
+	int r;
+
+	r = wrpll_configure_for_rate(&pwd->c, rate, parent_rate);
+	if (r)
+		return r;
+
+	if (pwd->enable_bypass)
+		pwd->enable_bypass(pd);
+
+	__prci_wrpll_write_cfg0(pd, pwd, &pwd->c);
+
+	udelay(wrpll_calc_max_lock_us(&pwd->c));
+
+	return 0;
+}
+
+int sifive_prci_clock_enable(struct __prci_clock *pc, bool enable)
+{
+	struct __prci_wrpll_data *pwd = pc->pwd;
+	struct __prci_data *pd = pc->pd;
+
+	if (enable) {
+		__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
+
+		if (pwd->disable_bypass)
+			pwd->disable_bypass(pd);
+
+		if (pwd->release_reset)
+			pwd->release_reset(pd);
+	} else {
+		u32 r;
+
+		if (pwd->enable_bypass)
+			pwd->enable_bypass(pd);
+
+		r = __prci_readl(pd, pwd->cfg1_offs);
+		r &= ~PRCI_COREPLLCFG1_CKE_MASK;
+
+		__prci_wrpll_write_cfg1(pd, pwd, r);
+	}
+
+	return 0;
+}
+
+/* TLCLKSEL clock integration */
+
+unsigned long sifive_prci_tlclksel_recalc_rate(struct __prci_clock *pc,
+					       unsigned long parent_rate)
+{
+	struct __prci_data *pd = pc->pd;
+	u32 v;
+	u8 div;
+
+	v = __prci_readl(pd, PRCI_CLKMUXSTATUSREG_OFFSET);
+	v &= PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK;
+	div = v ? 1 : 2;
+
+	return div_u64(parent_rate, div);
+}
+
+/* HFPCLK clock integration */
+
+unsigned long sifive_prci_hfpclkplldiv_recalc_rate(struct __prci_clock *pc,
+						   unsigned long parent_rate)
+{
+	struct __prci_data *pd = pc->pd;
+	u32 div = __prci_readl(pd, PRCI_HFPCLKPLLDIV_OFFSET);
+
+	return div_u64(parent_rate, div + 2);
+}
+
+/**
+ * sifive_prci_coreclksel_use_final_corepll() - switch the CORECLK mux to output
+ * FINAL_COREPLL
+ * @pd: struct __prci_data * for the PRCI containing the CORECLK mux reg
+ *
+ * Switch the CORECLK mux to the final COREPLL output clock; return once
+ * complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_CORECLKSEL_OFFSET register.
+ */
+void sifive_prci_coreclksel_use_final_corepll(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
+	r &= ~PRCI_CORECLKSEL_CORECLKSEL_MASK;
+	__prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);   /* barrier */
+}
+
+/**
+ * sifive_prci_corepllsel_use_dvfscorepll() - switch the COREPLL mux to
+ * output DVFS_COREPLL
+ * @pd: struct __prci_data * for the PRCI containing the COREPLL mux reg
+ *
+ * Switch the COREPLL mux to the DVFSCOREPLL output clock; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_COREPLLSEL_OFFSET register.
+ */
+void sifive_prci_corepllsel_use_dvfscorepll(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_COREPLLSEL_OFFSET);
+	r |= PRCI_COREPLLSEL_COREPLLSEL_MASK;
+	__prci_writel(r, PRCI_COREPLLSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_COREPLLSEL_OFFSET);   /* barrier */
+}
+
+/**
+ * sifive_prci_corepllsel_use_corepll() - switch the COREPLL mux to
+ * output COREPLL
+ * @pd: struct __prci_data * for the PRCI containing the COREPLL mux reg
+ *
+ * Switch the COREPLL mux to the COREPLL output clock; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_COREPLLSEL_OFFSET register.
+ */
+void sifive_prci_corepllsel_use_corepll(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_COREPLLSEL_OFFSET);
+	r &= ~PRCI_COREPLLSEL_COREPLLSEL_MASK;
+	__prci_writel(r, PRCI_COREPLLSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_COREPLLSEL_OFFSET);   /* barrier */
+}
+
+/**
+ * sifive_prci_hfpclkpllsel_use_hfclk() - switch the HFPCLKPLL mux to
+ * output HFCLK
+ * @pd: struct __prci_data * for the PRCI containing the HFPCLKPLL mux reg
+ *
+ * Switch the HFPCLKPLL mux to the HFCLK input source; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_HFPCLKPLLSEL_OFFSET register.
+ */
+void sifive_prci_hfpclkpllsel_use_hfclk(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_HFPCLKPLLSEL_OFFSET);
+	r |= PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_MASK;
+	__prci_writel(r, PRCI_HFPCLKPLLSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_HFPCLKPLLSEL_OFFSET); /* barrier */
+}
+
+/**
+ * sifive_prci_hfpclkpllsel_use_hfpclkpll() - switch the HFPCLKPLL mux to
+ * output HFPCLKPLL
+ * @pd: struct __prci_data * for the PRCI containing the HFPCLKPLL mux reg
+ *
+ * Switch the HFPCLKPLL mux to the HFPCLKPLL output clock; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_HFPCLKPLLSEL_OFFSET register.
+ */
+void sifive_prci_hfpclkpllsel_use_hfpclkpll(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_HFPCLKPLLSEL_OFFSET);
+	r &= ~PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_MASK;
+	__prci_writel(r, PRCI_HFPCLKPLLSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_HFPCLKPLLSEL_OFFSET); /* barrier */
+}
+
+static int __prci_consumer_reset(const char *rst_name, bool trigger)
+{
+	struct udevice *dev;
+	struct reset_ctl rst_sig;
+	int ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_RESET,
+					  DM_DRIVER_GET(sifive_reset),
+					  &dev);
+	if (ret) {
+		dev_err(dev, "Reset driver not found: %d\n", ret);
+		return ret;
+	}
+
+	ret = reset_get_by_name(dev, rst_name, &rst_sig);
+	if (ret) {
+		dev_err(dev, "failed to get %s reset\n", rst_name);
+		return ret;
+	}
+
+	if (reset_valid(&rst_sig)) {
+		if (trigger)
+			ret = reset_deassert(&rst_sig);
+		else
+			ret = reset_assert(&rst_sig);
+		if (ret) {
+			dev_err(dev, "failed to trigger reset id = %ld\n",
+				rst_sig.id);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+/**
+ * sifive_prci_ddr_release_reset() - Release DDR reset
+ * @pd: struct __prci_data * for the PRCI containing the DDRCLK mux reg
+ *
+ */
+void sifive_prci_ddr_release_reset(struct __prci_data *pd)
+{
+	/* Release DDR ctrl reset */
+	__prci_consumer_reset("ddr_ctrl", true);
+
+	/* HACK to get the '1 full controller clock cycle'. */
+	asm volatile ("fence");
+
+	/* Release DDR AXI reset */
+	__prci_consumer_reset("ddr_axi", true);
+
+	/* Release DDR AHB reset */
+	__prci_consumer_reset("ddr_ahb", true);
+
+	/* Release DDR PHY reset */
+	__prci_consumer_reset("ddr_phy", true);
+
+	/* HACK to get the '1 full controller clock cycle'. */
+	asm volatile ("fence");
+
+	/*
+	 * These take like 16 cycles to actually propagate. We can't go sending
+	 * stuff before they come out of reset. So wait.
+	 */
+	for (int i = 0; i < 256; i++)
+		asm volatile ("nop");
+}
+
+/**
+ * sifive_prci_ethernet_release_reset() - Release ethernet reset
+ * @pd: struct __prci_data * for the PRCI containing the Ethernet CLK mux reg
+ *
+ */
+void sifive_prci_ethernet_release_reset(struct __prci_data *pd)
+{
+	/* Release GEMGXL reset */
+	__prci_consumer_reset("gemgxl_reset", true);
+
+	/* Procmon => core clock */
+	__prci_writel(PRCI_PROCMONCFG_CORE_CLOCK_MASK, PRCI_PROCMONCFG_OFFSET,
+		      pd);
+
+	/* Release Chiplink reset */
+	__prci_consumer_reset("cltx_reset", true);
+}
+
+/**
+ * sifive_prci_cltx_release_reset() - Release cltx reset
+ * @pd: struct __prci_data * for the PRCI containing the Ethernet CLK mux reg
+ *
+ */
+void sifive_prci_cltx_release_reset(struct __prci_data *pd)
+{
+	/* Release CLTX reset */
+	__prci_consumer_reset("cltx_reset", true);
+}
+
+/* Core clock mux control */
+
+/**
+ * sifive_prci_coreclksel_use_hfclk() - switch the CORECLK mux to output HFCLK
+ * @pd: struct __prci_data * for the PRCI containing the CORECLK mux reg
+ *
+ * Switch the CORECLK mux to the HFCLK input source; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_CORECLKSEL_OFFSET register.
+ */
+void sifive_prci_coreclksel_use_hfclk(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
+	r |= PRCI_CORECLKSEL_CORECLKSEL_MASK;
+	__prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET); /* barrier */
+}
+
+/**
+ * sifive_prci_coreclksel_use_corepll() - switch the CORECLK mux to output COREPLL
+ * @pd: struct __prci_data * for the PRCI containing the CORECLK mux reg
+ *
+ * Switch the CORECLK mux to the PLL output clock; return once complete.
+ *
+ * Context: Any context.  Caller must prevent concurrent changes to the
+ *          PRCI_CORECLKSEL_OFFSET register.
+ */
+void sifive_prci_coreclksel_use_corepll(struct __prci_data *pd)
+{
+	u32 r;
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
+	r &= ~PRCI_CORECLKSEL_CORECLKSEL_MASK;
+	__prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
+
+	r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET); /* barrier */
+}
+
+static ulong sifive_prci_parent_rate(struct __prci_clock *pc, struct prci_clk_desc *data)
+{
+	ulong parent_rate;
+	ulong i;
+	struct __prci_clock *p;
+
+	if (strcmp(pc->parent_name, "corepll") == 0 ||
+	    strcmp(pc->parent_name, "hfpclkpll") == 0) {
+		for (i = 0; i < data->num_clks; i++) {
+			if (strcmp(pc->parent_name, data->clks[i].name) == 0)
+				break;
+		}
+
+		if (i >= data->num_clks)
+			return -ENXIO;
+
+		p = &data->clks[i];
+		if (!p->pd || !p->ops->recalc_rate)
+			return -ENXIO;
+
+		return p->ops->recalc_rate(p, sifive_prci_parent_rate(p, data));
+	}
+
+	if (strcmp(pc->parent_name, "rtcclk") == 0)
+		parent_rate = clk_get_rate(&pc->pd->parent_rtcclk);
+	else
+		parent_rate = clk_get_rate(&pc->pd->parent_hfclk);
+
+	return parent_rate;
+}
+
+static ulong sifive_prci_get_rate(struct clk *clk)
+{
+	struct __prci_clock *pc;
+	struct prci_clk_desc *data =
+		(struct prci_clk_desc *)dev_get_driver_data(clk->dev);
+
+	if (data->num_clks <= clk->id)
+		return -ENXIO;
+
+	pc = &data->clks[clk->id];
+	if (!pc->pd || !pc->ops->recalc_rate)
+		return -ENXIO;
+
+	return pc->ops->recalc_rate(pc, sifive_prci_parent_rate(pc, data));
+}
+
+static ulong sifive_prci_set_rate(struct clk *clk, ulong rate)
+{
+	int err;
+	struct __prci_clock *pc;
+	struct prci_clk_desc *data =
+		(struct prci_clk_desc *)dev_get_driver_data(clk->dev);
+
+	if (data->num_clks <= clk->id)
+		return -ENXIO;
+
+	pc = &data->clks[clk->id];
+	if (!pc->pd || !pc->ops->set_rate)
+		return -ENXIO;
+
+	err = pc->ops->set_rate(pc, rate, sifive_prci_parent_rate(pc, data));
+	if (err)
+		return err;
+
+	return rate;
+}
+
+static int sifive_prci_enable(struct clk *clk)
+{
+	struct __prci_clock *pc;
+	int ret = 0;
+	struct prci_clk_desc *data =
+		(struct prci_clk_desc *)dev_get_driver_data(clk->dev);
+
+	if (data->num_clks <= clk->id)
+		return -ENXIO;
+
+	pc = &data->clks[clk->id];
+	if (!pc->pd)
+		return -ENXIO;
+
+	if (pc->ops->enable_clk)
+		ret = pc->ops->enable_clk(pc, 1);
+
+	return ret;
+}
+
+static int sifive_prci_disable(struct clk *clk)
+{
+	struct __prci_clock *pc;
+	int ret = 0;
+	struct prci_clk_desc *data =
+		(struct prci_clk_desc *)dev_get_driver_data(clk->dev);
+
+	if (data->num_clks <= clk->id)
+		return -ENXIO;
+
+	pc = &data->clks[clk->id];
+	if (!pc->pd)
+		return -ENXIO;
+
+	if (pc->ops->enable_clk)
+		ret = pc->ops->enable_clk(pc, 0);
+
+	return ret;
+}
+
+static int sifive_prci_probe(struct udevice *dev)
+{
+	int i, err;
+	struct __prci_clock *pc;
+	struct __prci_data *pd = dev_get_priv(dev);
+
+	struct prci_clk_desc *data =
+		(struct prci_clk_desc *)dev_get_driver_data(dev);
+
+	pd->va = (void *)dev_read_addr(dev);
+	if (IS_ERR(pd->va))
+		return PTR_ERR(pd->va);
+
+	err = clk_get_by_index(dev, 0, &pd->parent_hfclk);
+	if (err)
+		return err;
+
+	err = clk_get_by_index(dev, 1, &pd->parent_rtcclk);
+	if (err)
+		return err;
+
+	for (i = 0; i < data->num_clks; ++i) {
+		pc = &data->clks[i];
+		pc->pd = pd;
+		if (pc->pwd)
+			__prci_wrpll_read_cfg0(pd, pc->pwd);
+	}
+
+	if (IS_ENABLED(CONFIG_SPL_BUILD)) {
+		if (device_is_compatible(dev, "sifive,fu740-c000-prci")) {
+			u32 prci_pll_reg;
+			unsigned long parent_rate;
+
+			prci_pll_reg = readl(pd->va + PRCI_PRCIPLL_OFFSET);
+
+			if (prci_pll_reg & PRCI_PRCIPLL_HFPCLKPLL) {
+				/*
+				 * Only initialize the HFPCLK PLL. In this
+				 * case the design uses hfpclk to drive
+				 * Chiplink
+				 */
+				pc = &data->clks[PRCI_CLK_HFPCLKPLL];
+				parent_rate = sifive_prci_parent_rate(pc, data);
+				sifive_prci_wrpll_set_rate(pc, 260000000,
+							   parent_rate);
+				pc->ops->enable_clk(pc, 1);
+			} else if (prci_pll_reg & PRCI_PRCIPLL_CLTXPLL) {
+				/* CLTX pll init */
+				pc = &data->clks[PRCI_CLK_CLTXPLL];
+				parent_rate = sifive_prci_parent_rate(pc, data);
+				sifive_prci_wrpll_set_rate(pc, 260000000,
+							   parent_rate);
+				pc->ops->enable_clk(pc, 1);
+			}
+		}
+	}
+
+	return 0;
+}
+
+static struct clk_ops sifive_prci_ops = {
+	.set_rate = sifive_prci_set_rate,
+	.get_rate = sifive_prci_get_rate,
+	.enable = sifive_prci_enable,
+	.disable = sifive_prci_disable,
+};
+
+static int sifive_clk_bind(struct udevice *dev)
+{
+	return sifive_reset_bind(dev, PRCI_DEVICERESETCNT);
+}
+
+static const struct udevice_id sifive_prci_ids[] = {
+	{ .compatible = "sifive,fu540-c000-prci", .data = (ulong)&prci_clk_fu540 },
+	{ .compatible = "sifive,fu740-c000-prci", .data = (ulong)&prci_clk_fu740 },
+	{ }
+};
+
+U_BOOT_DRIVER(sifive_prci) = {
+	.name = "sifive-prci",
+	.id = UCLASS_CLK,
+	.of_match = sifive_prci_ids,
+	.probe = sifive_prci_probe,
+	.ops = &sifive_prci_ops,
+	.priv_auto = sizeof(struct __prci_data),
+	.bind = sifive_clk_bind,
+};
diff --git a/drivers/clk/sifive/sifive-prci.h b/drivers/clk/sifive/sifive-prci.h
new file mode 100644
index 0000000000..5ce33d6184
--- /dev/null
+++ b/drivers/clk/sifive/sifive-prci.h
@@ -0,0 +1,323 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2021 SiFive, Inc.
+ * Wesley Terpstra
+ * Paul Walmsley
+ * Zong Li
+ * Pragnesh Patel
+ */
+
+#ifndef __SIFIVE_CLK_SIFIVE_PRCI_H
+#define __SIFIVE_CLK_SIFIVE_PRCI_H
+
+#include <clk.h>
+#include <linux/clk/analogbits-wrpll-cln28hpc.h>
+
+/*
+ * EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects:
+ *     hfclk and rtcclk
+ */
+#define EXPECTED_CLK_PARENT_COUNT       2
+
+/*
+ * Register offsets and bitmasks
+ */
+
+/* COREPLLCFG0 */
+#define PRCI_COREPLLCFG0_OFFSET		0x4
+#define PRCI_COREPLLCFG0_DIVR_SHIFT	0
+#define PRCI_COREPLLCFG0_DIVR_MASK	(0x3f << PRCI_COREPLLCFG0_DIVR_SHIFT)
+#define PRCI_COREPLLCFG0_DIVF_SHIFT	6
+#define PRCI_COREPLLCFG0_DIVF_MASK	(0x1ff << PRCI_COREPLLCFG0_DIVF_SHIFT)
+#define PRCI_COREPLLCFG0_DIVQ_SHIFT	15
+#define PRCI_COREPLLCFG0_DIVQ_MASK	(0x7 << PRCI_COREPLLCFG0_DIVQ_SHIFT)
+#define PRCI_COREPLLCFG0_RANGE_SHIFT	18
+#define PRCI_COREPLLCFG0_RANGE_MASK	(0x7 << PRCI_COREPLLCFG0_RANGE_SHIFT)
+#define PRCI_COREPLLCFG0_BYPASS_SHIFT	24
+#define PRCI_COREPLLCFG0_BYPASS_MASK	(0x1 << PRCI_COREPLLCFG0_BYPASS_SHIFT)
+#define PRCI_COREPLLCFG0_FSE_SHIFT	25
+#define PRCI_COREPLLCFG0_FSE_MASK	(0x1 << PRCI_COREPLLCFG0_FSE_SHIFT)
+#define PRCI_COREPLLCFG0_LOCK_SHIFT	31
+#define PRCI_COREPLLCFG0_LOCK_MASK	(0x1 << PRCI_COREPLLCFG0_LOCK_SHIFT)
+
+/* COREPLLCFG1 */
+#define PRCI_COREPLLCFG1_OFFSET		0x8
+#define PRCI_COREPLLCFG1_CKE_SHIFT	31
+#define PRCI_COREPLLCFG1_CKE_MASK	(0x1 << PRCI_COREPLLCFG1_CKE_SHIFT)
+
+/* DDRPLLCFG0 */
+#define PRCI_DDRPLLCFG0_OFFSET		0xc
+#define PRCI_DDRPLLCFG0_DIVR_SHIFT	0
+#define PRCI_DDRPLLCFG0_DIVR_MASK	(0x3f << PRCI_DDRPLLCFG0_DIVR_SHIFT)
+#define PRCI_DDRPLLCFG0_DIVF_SHIFT	6
+#define PRCI_DDRPLLCFG0_DIVF_MASK	(0x1ff << PRCI_DDRPLLCFG0_DIVF_SHIFT)
+#define PRCI_DDRPLLCFG0_DIVQ_SHIFT	15
+#define PRCI_DDRPLLCFG0_DIVQ_MASK	(0x7 << PRCI_DDRPLLCFG0_DIVQ_SHIFT)
+#define PRCI_DDRPLLCFG0_RANGE_SHIFT	18
+#define PRCI_DDRPLLCFG0_RANGE_MASK	(0x7 << PRCI_DDRPLLCFG0_RANGE_SHIFT)
+#define PRCI_DDRPLLCFG0_BYPASS_SHIFT	24
+#define PRCI_DDRPLLCFG0_BYPASS_MASK	(0x1 << PRCI_DDRPLLCFG0_BYPASS_SHIFT)
+#define PRCI_DDRPLLCFG0_FSE_SHIFT	25
+#define PRCI_DDRPLLCFG0_FSE_MASK	(0x1 << PRCI_DDRPLLCFG0_FSE_SHIFT)
+#define PRCI_DDRPLLCFG0_LOCK_SHIFT	31
+#define PRCI_DDRPLLCFG0_LOCK_MASK	(0x1 << PRCI_DDRPLLCFG0_LOCK_SHIFT)
+
+/* DDRPLLCFG1 */
+#define PRCI_DDRPLLCFG1_OFFSET		0x10
+#define PRCI_DDRPLLCFG1_CKE_SHIFT	31
+#define PRCI_DDRPLLCFG1_CKE_MASK	(0x1 << PRCI_DDRPLLCFG1_CKE_SHIFT)
+
+/* PCIEAUXCFG1 */
+#define PRCI_PCIEAUXCFG1_OFFSET		0x14
+#define PRCI_PCIEAUXCFG1_SHIFT		0
+#define PRCI_PCIEAUXCFG1_MASK		(0x1 << PRCI_PCIEAUXCFG1_SHIFT)
+
+/* GEMGXLPLLCFG0 */
+#define PRCI_GEMGXLPLLCFG0_OFFSET	0x1c
+#define PRCI_GEMGXLPLLCFG0_DIVR_SHIFT	0
+#define PRCI_GEMGXLPLLCFG0_DIVR_MASK	\
+			(0x3f << PRCI_GEMGXLPLLCFG0_DIVR_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_DIVF_SHIFT	6
+#define PRCI_GEMGXLPLLCFG0_DIVF_MASK	\
+			(0x1ff << PRCI_GEMGXLPLLCFG0_DIVF_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT	15
+#define PRCI_GEMGXLPLLCFG0_DIVQ_MASK	(0x7 << PRCI_GEMGXLPLLCFG0_DIVQ_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_RANGE_SHIFT	18
+#define PRCI_GEMGXLPLLCFG0_RANGE_MASK	\
+			(0x7 << PRCI_GEMGXLPLLCFG0_RANGE_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT	24
+#define PRCI_GEMGXLPLLCFG0_BYPASS_MASK	\
+			(0x1 << PRCI_GEMGXLPLLCFG0_BYPASS_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_FSE_SHIFT	25
+#define PRCI_GEMGXLPLLCFG0_FSE_MASK	\
+			(0x1 << PRCI_GEMGXLPLLCFG0_FSE_SHIFT)
+#define PRCI_GEMGXLPLLCFG0_LOCK_SHIFT	31
+#define PRCI_GEMGXLPLLCFG0_LOCK_MASK	(0x1 << PRCI_GEMGXLPLLCFG0_LOCK_SHIFT)
+
+/* GEMGXLPLLCFG1 */
+#define PRCI_GEMGXLPLLCFG1_OFFSET	0x20
+#define PRCI_GEMGXLPLLCFG1_CKE_SHIFT	31
+#define PRCI_GEMGXLPLLCFG1_CKE_MASK	(0x1 << PRCI_GEMGXLPLLCFG1_CKE_SHIFT)
+
+/* CORECLKSEL */
+#define PRCI_CORECLKSEL_OFFSET		0x24
+#define PRCI_CORECLKSEL_CORECLKSEL_SHIFT	0
+#define PRCI_CORECLKSEL_CORECLKSEL_MASK \
+			(0x1 << PRCI_CORECLKSEL_CORECLKSEL_SHIFT)
+
+/* DEVICESRESETREG */
+#define PRCI_DEVICESRESETREG_OFFSET	0x28
+#define PRCI_DEVICERESETCNT	6
+
+/* CLKMUXSTATUSREG */
+#define PRCI_CLKMUXSTATUSREG_OFFSET	0x2c
+#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT	1
+#define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_MASK \
+			(0x1 << PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT)
+
+/* CLTXPLLCFG0 */
+#define PRCI_CLTXPLLCFG0_OFFSET		0x30
+#define PRCI_CLTXPLLCFG0_DIVR_SHIFT	0
+#define PRCI_CLTXPLLCFG0_DIVR_MASK	(0x3f << PRCI_CLTXPLLCFG0_DIVR_SHIFT)
+#define PRCI_CLTXPLLCFG0_DIVF_SHIFT	6
+#define PRCI_CLTXPLLCFG0_DIVF_MASK	(0x1ff << PRCI_CLTXPLLCFG0_DIVF_SHIFT)
+#define PRCI_CLTXPLLCFG0_DIVQ_SHIFT	15
+#define PRCI_CLTXPLLCFG0_DIVQ_MASK	(0x7 << PRCI_CLTXPLLCFG0_DIVQ_SHIFT)
+#define PRCI_CLTXPLLCFG0_RANGE_SHIFT	18
+#define PRCI_CLTXPLLCFG0_RANGE_MASK	(0x7 << PRCI_CLTXPLLCFG0_RANGE_SHIFT)
+#define PRCI_CLTXPLLCFG0_BYPASS_SHIFT	24
+#define PRCI_CLTXPLLCFG0_BYPASS_MASK	(0x1 << PRCI_CLTXPLLCFG0_BYPASS_SHIFT)
+#define PRCI_CLTXPLLCFG0_FSE_SHIFT	25
+#define PRCI_CLTXPLLCFG0_FSE_MASK	(0x1 << PRCI_CLTXPLLCFG0_FSE_SHIFT)
+#define PRCI_CLTXPLLCFG0_LOCK_SHIFT	31
+#define PRCI_CLTXPLLCFG0_LOCK_MASK	(0x1 << PRCI_CLTXPLLCFG0_LOCK_SHIFT)
+
+/* CLTXPLLCFG1 */
+#define PRCI_CLTXPLLCFG1_OFFSET		0x34
+#define PRCI_CLTXPLLCFG1_CKE_SHIFT	24
+#define PRCI_CLTXPLLCFG1_CKE_MASK	(0x1 << PRCI_CLTXPLLCFG1_CKE_SHIFT)
+
+/* DVFSCOREPLLCFG0 */
+#define PRCI_DVFSCOREPLLCFG0_OFFSET	0x38
+
+/* DVFSCOREPLLCFG1 */
+#define PRCI_DVFSCOREPLLCFG1_OFFSET	0x3c
+#define PRCI_DVFSCOREPLLCFG1_CKE_SHIFT	24
+#define PRCI_DVFSCOREPLLCFG1_CKE_MASK	(0x1 << PRCI_DVFSCOREPLLCFG1_CKE_SHIFT)
+
+/* COREPLLSEL */
+#define PRCI_COREPLLSEL_OFFSET		0x40
+#define PRCI_COREPLLSEL_COREPLLSEL_SHIFT	0
+#define PRCI_COREPLLSEL_COREPLLSEL_MASK	\
+		(0x1 << PRCI_COREPLLSEL_COREPLLSEL_SHIFT)
+
+/* HFPCLKPLLCFG0 */
+#define PRCI_HFPCLKPLLCFG0_OFFSET		0x50
+#define PRCI_HFPCLKPLL_CFG0_DIVR_SHIFT		0
+#define PRCI_HFPCLKPLL_CFG0_DIVR_MASK	\
+		(0x3f << PRCI_HFPCLKPLLCFG0_DIVR_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_DIVF_SHIFT		6
+#define PRCI_HFPCLKPLL_CFG0_DIVF_MASK	\
+		(0x1ff << PRCI_HFPCLKPLLCFG0_DIVF_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_DIVQ_SHIFT		15
+#define PRCI_HFPCLKPLL_CFG0_DIVQ_MASK	\
+		(0x7 << PRCI_HFPCLKPLLCFG0_DIVQ_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_RANGE_SHIFT		18
+#define PRCI_HFPCLKPLL_CFG0_RANGE_MASK	\
+		(0x7 << PRCI_HFPCLKPLLCFG0_RANGE_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_BYPASS_SHIFT	24
+#define PRCI_HFPCLKPLL_CFG0_BYPASS_MASK	\
+		(0x1 << PRCI_HFPCLKPLLCFG0_BYPASS_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_FSE_SHIFT		25
+#define PRCI_HFPCLKPLL_CFG0_FSE_MASK	\
+		(0x1 << PRCI_HFPCLKPLLCFG0_FSE_SHIFT)
+#define PRCI_HFPCLKPLL_CFG0_LOCK_SHIFT		31
+#define PRCI_HFPCLKPLL_CFG0_LOCK_MASK	\
+		(0x1 << PRCI_HFPCLKPLLCFG0_LOCK_SHIFT)
+
+/* HFPCLKPLLCFG1 */
+#define PRCI_HFPCLKPLLCFG1_OFFSET		0x54
+#define PRCI_HFPCLKPLLCFG1_CKE_SHIFT		24
+#define PRCI_HFPCLKPLLCFG1_CKE_MASK	\
+		(0x1 << PRCI_HFPCLKPLLCFG1_CKE_SHIFT)
+
+/* HFPCLKPLLSEL */
+#define PRCI_HFPCLKPLLSEL_OFFSET		0x58
+#define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT	0
+#define PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_MASK	\
+		(0x1 << PRCI_HFPCLKPLLSEL_HFPCLKPLLSEL_SHIFT)
+
+/* HFPCLKPLLDIV */
+#define PRCI_HFPCLKPLLDIV_OFFSET		0x5c
+
+/* PRCIPLL */
+#define PRCI_PRCIPLL_OFFSET			0xe0
+
+#define PRCI_PRCIPLL_CLTXPLL			(0x1 << 0)
+#define PRCI_PRCIPLL_GEMGXLPLL			(0x1 << 1)
+#define PRCI_PRCIPLL_DDRPLL			(0x1 << 2)
+#define PRCI_PRCIPLL_HFPCLKPLL			(0x1 << 3)
+#define PRCI_PRCIPLL_DVFSCOREPLL		(0x1 << 4)
+#define PRCI_PRCIPLL_COREPLL			(0x1 << 5)
+
+/* PROCMONCFG */
+#define PRCI_PROCMONCFG_OFFSET		0xF0
+#define PRCI_PROCMONCFG_CORE_CLOCK_SHIFT	24
+#define PRCI_PROCMONCFG_CORE_CLOCK_MASK \
+			(0x1 << PRCI_PROCMONCFG_CORE_CLOCK_SHIFT)
+
+/*
+ * Private structures
+ */
+
+/**
+ * struct __prci_data - per-device-instance data
+ * @va: base virtual address of the PRCI IP block
+ * @parent: parent clk instance
+ *
+ * PRCI per-device instance data
+ */
+struct __prci_data {
+	void *va;
+	struct clk parent_hfclk;
+	struct clk parent_rtcclk;
+};
+
+/**
+ * struct __prci_wrpll_data - WRPLL configuration and integration data
+ * @c: WRPLL current configuration record
+ * @enable_bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL)
+ * @disable_bypass: fn ptr to code to not bypass the WRPLL (or NULL)
+ * @cfg0_offs: WRPLL CFG0 register offset (in bytes) from the PRCI base address
+ * @cfg1_offs: WRPLL CFG1 register offset (in bytes) from the PRCI base address
+ * @release_reset: fn ptr to code to release clock reset
+ *
+ * @enable_bypass and @disable_bypass are used for WRPLL instances
+ * that contain a separate external glitchless clock mux downstream
+ * from the PLL.  The WRPLL internal bypass mux is not glitchless.
+ */
+struct __prci_wrpll_data {
+	struct wrpll_cfg c;
+	void (*enable_bypass)(struct __prci_data *pd);
+	void (*disable_bypass)(struct __prci_data *pd);
+	u8 cfg0_offs;
+	u8 cfg1_offs;
+	void (*release_reset)(struct __prci_data *pd);
+};
+
+/**
+ * struct __prci_clock - describes a clock device managed by PRCI
+ * @name: user-readable clock name string - should match the manual
+ * @parent_name: parent name for this clock
+ * @ops: struct __prci_clock_ops for control
+ * @pwd: WRPLL-specific data, associated with this clock (if not NULL)
+ * @pd: PRCI-specific data associated with this clock (if not NULL)
+ *
+ * PRCI clock data.  Used by the PRCI driver to register PRCI-provided
+ * clocks to the Linux clock infrastructure.
+ */
+struct __prci_clock {
+	const char *name;
+	const char *parent_name;
+	const struct __prci_clock_ops *ops;
+	struct __prci_wrpll_data *pwd;
+	struct __prci_data *pd;
+};
+
+/* struct __prci_clock_ops - clock operations */
+struct __prci_clock_ops {
+	int (*set_rate)(struct __prci_clock *pc,
+			unsigned long rate,
+			unsigned long parent_rate);
+	unsigned long (*round_rate)(struct __prci_clock *pc,
+				    unsigned long rate,
+				    unsigned long *parent_rate);
+	unsigned long (*recalc_rate)(struct __prci_clock *pc,
+				     unsigned long parent_rate);
+	int (*enable_clk)(struct __prci_clock *pc, bool enable);
+};
+
+/*
+ * struct prci_clk_desc - describes the information of clocks of each SoCs
+ * @clks: point to a array of __prci_clock
+ * @num_clks: the number of element of clks
+ */
+struct prci_clk_desc {
+	struct __prci_clock *clks;
+	size_t num_clks;
+};
+
+void sifive_prci_ethernet_release_reset(struct __prci_data *pd);
+void sifive_prci_ddr_release_reset(struct __prci_data *pd);
+void sifive_prci_cltx_release_reset(struct __prci_data *pd);
+
+/* Core clock mux control */
+void sifive_prci_coreclksel_use_hfclk(struct __prci_data *pd);
+void sifive_prci_coreclksel_use_corepll(struct __prci_data *pd);
+void sifive_prci_coreclksel_use_final_corepll(struct __prci_data *pd);
+void sifive_prci_corepllsel_use_dvfscorepll(struct __prci_data *pd);
+void sifive_prci_corepllsel_use_corepll(struct __prci_data *pd);
+void sifive_prci_hfpclkpllsel_use_hfclk(struct __prci_data *pd);
+void sifive_prci_hfpclkpllsel_use_hfpclkpll(struct __prci_data *pd);
+
+unsigned long sifive_prci_wrpll_round_rate(struct __prci_clock *pc,
+					   unsigned long rate,
+					   unsigned long *parent_rate);
+
+/* Linux clock framework integration */
+int sifive_prci_wrpll_set_rate(struct __prci_clock *pc,
+			       unsigned long rate,
+			       unsigned long parent_rate);
+
+unsigned long sifive_prci_wrpll_recalc_rate(struct __prci_clock *pc,
+					    unsigned long parent_rate);
+
+unsigned long sifive_prci_tlclksel_recalc_rate(struct __prci_clock *pc,
+					       unsigned long parent_rate);
+
+unsigned long sifive_prci_hfpclkplldiv_recalc_rate(struct __prci_clock *pc,
+						   unsigned long parent_rate);
+
+int sifive_prci_clock_enable(struct __prci_clock *pc, bool enable);
+
+#endif /* __SIFIVE_CLK_SIFIVE_PRCI_H */
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 019565f979..91303ecbf6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -166,7 +166,7 @@ config RESET_IPQ419
 
 config RESET_SIFIVE
 	bool "Reset Driver for SiFive SoC's"
-	depends on DM_RESET && CLK_SIFIVE_FU540_PRCI && TARGET_SIFIVE_UNLEASHED
+	depends on DM_RESET && CLK_SIFIVE_PRCI && TARGET_SIFIVE_UNLEASHED
 	default y
 	help
 	  PRCI module within SiFive SoC's provides mechanism to reset
-- 
2.31.0