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Date: Wed, 11 Nov 2020 09:51:17 +0000
From: Pragnesh Patel <pragnesh.patel@...nfive.com>
To: Zong Li <zong.li@...ive.com>
CC: Zong Li <zong.li@...ive.com>,
"palmer@...belt.com" <palmer@...belt.com>,
"sboyd@...nel.org" <sboyd@...nel.org>,
"schwab@...ux-m68k.org" <schwab@...ux-m68k.org>,
"aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
"mturquette@...libre.com" <mturquette@...libre.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
Yash Shah <yash.shah@...nfive.com>,
"Paul Walmsley ( Sifive)" <paul.walmsley@...ive.com>
Subject: RE: [PATCH v3 1/3] clk: sifive: Extract prci core to common base
Hi Zong,
>-----Original Message-----
>From: Zong Li <zong.li@...ive.com>
>Sent: 11 November 2020 15:05
>To: Paul Walmsley ( Sifive) <paul.walmsley@...ive.com>; palmer@...belt.com;
>sboyd@...nel.org; schwab@...ux-m68k.org; Pragnesh Patel
><pragnesh.patel@...nfive.com>; aou@...s.berkeley.edu;
>mturquette@...libre.com; Yash Shah <yash.shah@...nfive.com>; linux-
>kernel@...r.kernel.org; linux-clk@...r.kernel.org; linux-
>riscv@...ts.infradead.org
>Cc: Zong Li <zong.li@...ive.com>
>Subject: [PATCH v3 1/3] clk: sifive: Extract prci core to common base
>
>Extract common core of prci driver to an independent file, it could allow other
>chips to reuse it. Separate SoCs-dependent code 'fu540'
>from prci core, then we can easily add 'fu740' later.
>
>Almost these changes are code movement. The different is adding the private
>data for each SoC use, so it needs to get match data in probe callback function,
>then use the data for initialization.
>
>Signed-off-by: Zong Li <zong.li@...ive.com>
>---
> drivers/clk/sifive/Makefile | 2 +
> drivers/clk/sifive/fu540-prci.c | 586 +-----------------
> drivers/clk/sifive/fu540-prci.h | 21 +
> .../sifive/{fu540-prci.c => sifive-prci.c} | 381 +++---------
> drivers/clk/sifive/sifive-prci.h | 201 ++++++
> 5 files changed, 323 insertions(+), 868 deletions(-) create mode 100644
>drivers/clk/sifive/fu540-prci.h copy drivers/clk/sifive/{fu540-prci.c => sifive-
>prci.c} (45%) create mode 100644 drivers/clk/sifive/sifive-prci.h
>
>diff --git a/drivers/clk/sifive/Makefile b/drivers/clk/sifive/Makefile index
>0797f14fef6b..627effe2ece1 100644
>--- a/drivers/clk/sifive/Makefile
>+++ b/drivers/clk/sifive/Makefile
>@@ -1,2 +1,4 @@
> # SPDX-License-Identifier: GPL-2.0-only
>+obj-y += sifive-prci.o
>+
> obj-$(CONFIG_CLK_SIFIVE_FU540_PRCI) += fu540-prci.o
>diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index
>a8901f90a61a..840b97bfff85 100644
>--- a/drivers/clk/sifive/fu540-prci.c
>+++ b/drivers/clk/sifive/fu540-prci.c
>@@ -3,6 +3,7 @@
> * Copyright (C) 2018-2019 SiFive, Inc.
> * Wesley Terpstra
> * Paul Walmsley
>+ * Zong Li
> *
> * 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 @@ -
>13,475 +14,48 @@
> * 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:
>- * https://github.com/riscv/riscv-
>linux/commit/999529edf517ed75b56659d456d221b2ee56bb60
>- *
> * References:
> * - SiFive FU540-C000 manual v1p0, Chapter 7 "Clocking and Reset"
> */
>
> #include <dt-bindings/clock/sifive-fu540-prci.h>
>-#include <linux/clkdev.h>
>-#include <linux/clk-provider.h>
>-#include <linux/clk/analogbits-wrpll-cln28hpc.h>
>-#include <linux/delay.h>
>-#include <linux/err.h>
>-#include <linux/io.h>
> #include <linux/module.h>
>-#include <linux/of.h>
>-#include <linux/of_clk.h>
>-#include <linux/platform_device.h>
>-#include <linux/slab.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)
>-
>-/* 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)
>+#include "sifive-prci.h"
>
>-/* DDRPLLCFG1 */
>-#define PRCI_DDRPLLCFG1_OFFSET 0x10
>-# define PRCI_DDRPLLCFG1_CKE_SHIFT 24
>-# define PRCI_DDRPLLCFG1_CKE_MASK (0x1 <<
>PRCI_DDRPLLCFG1_CKE_SHIFT)
>+/* PRCI integration data for each WRPLL instance */
>
>-/* 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 24
>-# 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_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT 0
>-# define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT 1
>-# define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT 2
>-# define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT 3
>-# define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT 5
>-# define PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT)
>-
>-/* 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)
>-
>-/*
>- * Private structures
>- */
>-
>-/**
>- * struct __prci_data - per-device-instance data
>- * @va: base virtual address of the PRCI IP block
>- * @hw_clks: encapsulates struct clk_hw records
>- *
>- * PRCI per-device instance data
>- */
>-struct __prci_data {
>- void __iomem *va;
>- struct clk_hw_onecell_data hw_clks;
>+static struct __prci_wrpll_data __prci_corepll_data = {
>+ .cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
>+ .enable_bypass = sifive_prci_coreclksel_use_hfclk,
>+ .disable_bypass = sifive_prci_coreclksel_use_corepll,
> };
>
>-/**
>- * 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
>- *
>- * @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;
>+static struct __prci_wrpll_data __prci_ddrpll_data = {
>+ .cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
> };
>
>-/**
>- * 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 clk_ops for the Linux clock framework to use for control
>- * @hw: Linux-private clock data
>- * @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 clk_ops *ops;
>- struct clk_hw hw;
>- struct __prci_wrpll_data *pwd;
>- struct __prci_data *pd;
>+static struct __prci_wrpll_data __prci_gemgxlpll_data = {
>+ .cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
> };
>
>-#define clk_hw_to_prci_clock(pwd) container_of(pwd, struct __prci_clock, hw)
>-
>-/*
>- * 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_relaxed(pd->va + offs);
>-}
>-
>-static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd) -{
>- writel_relaxed(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_cfg() - 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_cfg(struct __prci_data *pd,
>- struct __prci_wrpll_data *pwd)
>-{
>- __prci_wrpll_unpack(&pwd->c, __prci_readl(pd, pwd->cfg0_offs));
>-}
>-
>-/**
>- * __prci_wrpll_write_cfg() - 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_cfg(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));
>-}
>-
>-/* 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 */
>-}
>-
>-/*
>- * Linux clock framework integration
>- *
>- * See the Linux clock framework documentation for more information on
>- * these functions.
>- */
>-
>-static unsigned long sifive_fu540_prci_wrpll_recalc_rate(struct clk_hw *hw,
>- unsigned long parent_rate)
>-{
>- struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
>- struct __prci_wrpll_data *pwd = pc->pwd;
>-
>- return wrpll_calc_output_rate(&pwd->c, parent_rate);
>-}
>-
>-static long sifive_fu540_prci_wrpll_round_rate(struct clk_hw *hw,
>- unsigned long rate,
>- unsigned long *parent_rate)
>-{
>- struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
>- 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 clk_hw *hw,
>- unsigned long rate,
>- unsigned long parent_rate)
>-{
>- struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
>- 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_cfg(pd, pwd, &pwd->c);
>-
>- udelay(wrpll_calc_max_lock_us(&pwd->c));
>-
>- if (pwd->disable_bypass)
>- pwd->disable_bypass(pd);
>-
>- return 0;
>-}
>+/* Linux clock framework integration */
>
> static const struct clk_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,
>+ .set_rate = sifive_prci_wrpll_set_rate,
>+ .round_rate = sifive_prci_wrpll_round_rate,
>+ .recalc_rate = sifive_prci_wrpll_recalc_rate,
> };
>
> static const struct clk_ops sifive_fu540_prci_wrpll_ro_clk_ops = {
>- .recalc_rate = sifive_fu540_prci_wrpll_recalc_rate,
>+ .recalc_rate = sifive_prci_wrpll_recalc_rate,
> };
>
>-/* TLCLKSEL clock integration */
>-
>-static unsigned long sifive_fu540_prci_tlclksel_recalc_rate(struct clk_hw *hw,
>- unsigned long parent_rate)
>-{
>- struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
>- 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 clk_ops sifive_fu540_prci_tlclksel_clk_ops = {
>- .recalc_rate = sifive_fu540_prci_tlclksel_recalc_rate,
>-};
>-
>-/*
>- * PRCI integration data for each WRPLL instance
>- */
>-
>-static struct __prci_wrpll_data __prci_corepll_data = {
>- .cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
>- .enable_bypass = __prci_coreclksel_use_hfclk,
>- .disable_bypass = __prci_coreclksel_use_corepll,
>-};
>-
>-static struct __prci_wrpll_data __prci_ddrpll_data = {
>- .cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
>+ .recalc_rate = sifive_prci_tlclksel_recalc_rate,
> };
>
>-static struct __prci_wrpll_data __prci_gemgxlpll_data = {
>- .cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
>-};
>-
>-/*
>- * List of clock controls provided by the PRCI
>- */
>-
>-static struct __prci_clock __prci_init_clocks[] = {
>+/* List of clock controls provided by the PRCI */ struct __prci_clock
>+__prci_init_clocks_fu540[] = {
> [PRCI_CLK_COREPLL] = {
> .name = "corepll",
> .parent_name = "hfclk",
>@@ -506,125 +80,3 @@ static struct __prci_clock __prci_init_clocks[] = {
> .ops = &sifive_fu540_prci_tlclksel_clk_ops,
> },
> };
>-
>-/**
>- * __prci_register_clocks() - register clock controls in the PRCI with Linux
>- * @dev: Linux struct device *
>- *
>- * Register the list of clock controls described in __prci_init_plls[] with
>- * the Linux clock framework.
>- *
>- * Return: 0 upon success or a negative error code upon failure.
>- */
>-static int __prci_register_clocks(struct device *dev, struct __prci_data *pd) -{
>- struct clk_init_data init = { };
>- struct __prci_clock *pic;
>- int parent_count, i, r;
>-
>- parent_count = of_clk_get_parent_count(dev->of_node);
>- if (parent_count != EXPECTED_CLK_PARENT_COUNT) {
>- dev_err(dev, "expected only two parent clocks, found %d\n",
>- parent_count);
>- return -EINVAL;
>- }
>-
>- /* Register PLLs */
>- for (i = 0; i < ARRAY_SIZE(__prci_init_clocks); ++i) {
>- pic = &__prci_init_clocks[i];
>-
>- init.name = pic->name;
>- init.parent_names = &pic->parent_name;
>- init.num_parents = 1;
>- init.ops = pic->ops;
>- pic->hw.init = &init;
>-
>- pic->pd = pd;
>-
>- if (pic->pwd)
>- __prci_wrpll_read_cfg(pd, pic->pwd);
>-
>- r = devm_clk_hw_register(dev, &pic->hw);
>- if (r) {
>- dev_warn(dev, "Failed to register clock %s: %d\n",
>- init.name, r);
>- return r;
>- }
>-
>- r = clk_hw_register_clkdev(&pic->hw, pic->name, dev_name(dev));
>- if (r) {
>- dev_warn(dev, "Failed to register clkdev for %s: %d\n",
>- init.name, r);
>- return r;
>- }
>-
>- pd->hw_clks.hws[i] = &pic->hw;
>- }
>-
>- pd->hw_clks.num = i;
>-
>- r = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
>- &pd->hw_clks);
>- if (r) {
>- dev_err(dev, "could not add hw_provider: %d\n", r);
>- return r;
>- }
>-
>- return 0;
>-}
>-
>-/*
>- * Linux device model integration
>- *
>- * See the Linux device model documentation for more information about
>- * these functions.
>- */
>-static int sifive_fu540_prci_probe(struct platform_device *pdev) -{
>- struct device *dev = &pdev->dev;
>- struct resource *res;
>- struct __prci_data *pd;
>- int r;
>-
>- pd = devm_kzalloc(dev,
>- struct_size(pd, hw_clks.hws,
>- ARRAY_SIZE(__prci_init_clocks)),
>- GFP_KERNEL);
>- if (!pd)
>- return -ENOMEM;
>-
>- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>- pd->va = devm_ioremap_resource(dev, res);
>- if (IS_ERR(pd->va))
>- return PTR_ERR(pd->va);
>-
>- r = __prci_register_clocks(dev, pd);
>- if (r) {
>- dev_err(dev, "could not register clocks: %d\n", r);
>- return r;
>- }
>-
>- dev_dbg(dev, "SiFive FU540 PRCI probed\n");
>-
>- return 0;
>-}
>-
>-static const struct of_device_id sifive_fu540_prci_of_match[] = {
>- { .compatible = "sifive,fu540-c000-prci", },
>- {}
>-};
>-MODULE_DEVICE_TABLE(of, sifive_fu540_prci_of_match);
>-
>-static struct platform_driver sifive_fu540_prci_driver = {
>- .driver = {
>- .name = "sifive-fu540-prci",
>- .of_match_table = sifive_fu540_prci_of_match,
>- },
>- .probe = sifive_fu540_prci_probe,
>-};
>-
>-static int __init sifive_fu540_prci_init(void) -{
>- return platform_driver_register(&sifive_fu540_prci_driver);
>-}
>-core_initcall(sifive_fu540_prci_init);
>diff --git a/drivers/clk/sifive/fu540-prci.h b/drivers/clk/sifive/fu540-prci.h new
>file mode 100644 index 000000000000..c8271efa7bdc
>--- /dev/null
>+++ b/drivers/clk/sifive/fu540-prci.h
>@@ -0,0 +1,21 @@
>+/* SPDX-License-Identifier: GPL-2.0 */
>+/*
>+ * Copyright (C) 2020 SiFive, Inc.
>+ * Zong Li
>+ */
>+
>+#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/fu540-prci.c b/drivers/clk/sifive/sifive-prci.c
>similarity index 45%
>copy from drivers/clk/sifive/fu540-prci.c copy to drivers/clk/sifive/sifive-prci.c
>index a8901f90a61a..0ac729eeb71b 100644
>--- a/drivers/clk/sifive/fu540-prci.c
>+++ b/drivers/clk/sifive/sifive-prci.c
>@@ -3,6 +3,7 @@
> * Copyright (C) 2018-2019 SiFive, Inc.
> * Wesley Terpstra
> * Paul Walmsley
>+ * Zong Li
> *
> * 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 @@ -
>13,180 +14,19 @@
> * 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.
>+ * 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
>- *
>- * References:
>- * - SiFive FU540-C000 manual v1p0, Chapter 7 "Clocking and Reset"
> */
>
>-#include <dt-bindings/clock/sifive-fu540-prci.h>
> #include <linux/clkdev.h>
>-#include <linux/clk-provider.h>
>-#include <linux/clk/analogbits-wrpll-cln28hpc.h>
> #include <linux/delay.h>
>-#include <linux/err.h>
> #include <linux/io.h>
>-#include <linux/module.h>
>-#include <linux/of.h>
>-#include <linux/of_clk.h>
>-#include <linux/platform_device.h>
>-#include <linux/slab.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)
>-
>-/* 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 24
>-# 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 24
>-# 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_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT 0
>-# define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT 1
>-# define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT 2
>-# define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT 3
>-# define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT)
>-# define PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT 5
>-# define PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK (0x1 <<
>PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT)
>-
>-/* 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)
>-
>-/*
>- * Private structures
>- */
>-
>-/**
>- * struct __prci_data - per-device-instance data
>- * @va: base virtual address of the PRCI IP block
>- * @hw_clks: encapsulates struct clk_hw records
>- *
>- * PRCI per-device instance data
>- */
>-struct __prci_data {
>- void __iomem *va;
>- struct clk_hw_onecell_data hw_clks;
>-};
>-
>-/**
>- * 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
>- *
>- * @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;
>-};
>-
>-/**
>- * 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 clk_ops for the Linux clock framework to use for control
>- * @hw: Linux-private clock data
>- * @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 clk_ops *ops;
>- struct clk_hw hw;
>- struct __prci_wrpll_data *pwd;
>- struct __prci_data *pd;
>-};
>-
>-#define clk_hw_to_prci_clock(pwd) container_of(pwd, struct __prci_clock, hw)
>+#include <linux/of_device.h>
>+#include "sifive-prci.h"
>+#include "fu540-prci.h"
>
> /*
> * Private functions
>@@ -222,7 +62,7 @@ static void __prci_writel(u32 v, u32 offs, struct
>__prci_data *pd)
> * @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,
>+ * Given a value @r read from an FU740 PRCI PLL configuration register,
> * split it into fields and populate it into the WRPLL configuration record
> * pointed to by @c.
> *
>@@ -251,8 +91,8 @@ static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r)
> v >>= PRCI_COREPLLCFG0_RANGE_SHIFT;
> c->range = v;
>
>- c->flags &= (WRPLL_FLAGS_INT_FEEDBACK_MASK |
>- WRPLL_FLAGS_EXT_FEEDBACK_MASK);
>+ c->flags &=
>+ (WRPLL_FLAGS_INT_FEEDBACK_MASK |
>WRPLL_FLAGS_EXT_FEEDBACK_MASK);
>
> /* external feedback mode not supported */
> c->flags |= WRPLL_FLAGS_INT_FEEDBACK_MASK; @@ -329,48 +169,6 @@
>static void __prci_wrpll_write_cfg(struct __prci_data *pd,
> memcpy(&pwd->c, c, sizeof(*c));
> }
>
>-/* 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 */
>-}
>-
> /*
> * Linux clock framework integration
> *
>@@ -378,8 +176,8 @@ static void __prci_coreclksel_use_corepll(struct
>__prci_data *pd)
> * these functions.
> */
>
>-static unsigned long sifive_fu540_prci_wrpll_recalc_rate(struct clk_hw *hw,
>- unsigned long parent_rate)
>+unsigned long sifive_prci_wrpll_recalc_rate(struct clk_hw *hw,
>+ unsigned long parent_rate)
> {
> struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
> struct __prci_wrpll_data *pwd = pc->pwd; @@ -387,9 +185,9 @@ static
>unsigned long sifive_fu540_prci_wrpll_recalc_rate(struct clk_hw *hw,
> return wrpll_calc_output_rate(&pwd->c, parent_rate); }
>
>-static long sifive_fu540_prci_wrpll_round_rate(struct clk_hw *hw,
>- unsigned long rate,
>- unsigned long *parent_rate)
>+long sifive_prci_wrpll_round_rate(struct clk_hw *hw,
>+ unsigned long rate,
>+ unsigned long *parent_rate)
> {
> struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
> struct __prci_wrpll_data *pwd = pc->pwd; @@ -402,9 +200,8 @@ static
>long sifive_fu540_prci_wrpll_round_rate(struct clk_hw *hw,
> return wrpll_calc_output_rate(&c, *parent_rate); }
>
>-static int sifive_fu540_prci_wrpll_set_rate(struct clk_hw *hw,
>- unsigned long rate,
>- unsigned long parent_rate)
>+int sifive_prci_wrpll_set_rate(struct clk_hw *hw,
>+ unsigned long rate, unsigned long parent_rate)
> {
> struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
> struct __prci_wrpll_data *pwd = pc->pwd; @@ -428,20 +225,10 @@ static
>int sifive_fu540_prci_wrpll_set_rate(struct clk_hw *hw,
> return 0;
> }
>
>-static const struct clk_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,
>-};
>-
>-static const struct clk_ops sifive_fu540_prci_wrpll_ro_clk_ops = {
>- .recalc_rate = sifive_fu540_prci_wrpll_recalc_rate,
>-};
>-
> /* TLCLKSEL clock integration */
>
>-static unsigned long sifive_fu540_prci_tlclksel_recalc_rate(struct clk_hw *hw,
>- unsigned long parent_rate)
>+unsigned long sifive_prci_tlclksel_recalc_rate(struct clk_hw *hw,
>+ unsigned long parent_rate)
> {
> struct __prci_clock *pc = clk_hw_to_prci_clock(hw);
> struct __prci_data *pd = pc->pd;
>@@ -455,68 +242,62 @@ static unsigned long
>sifive_fu540_prci_tlclksel_recalc_rate(struct clk_hw *hw,
> return div_u64(parent_rate, div);
> }
>
>-static const struct clk_ops sifive_fu540_prci_tlclksel_clk_ops = {
>- .recalc_rate = sifive_fu540_prci_tlclksel_recalc_rate,
>-};
>-
> /*
>- * PRCI integration data for each WRPLL instance
>+ * Core clock mux control
> */
>
>-static struct __prci_wrpll_data __prci_corepll_data = {
>- .cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
>- .enable_bypass = __prci_coreclksel_use_hfclk,
>- .disable_bypass = __prci_coreclksel_use_corepll,
>-};
>+/**
>+ * 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;
>
>-static struct __prci_wrpll_data __prci_ddrpll_data = {
>- .cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
>-};
>+ r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET);
>+ r |= PRCI_CORECLKSEL_CORECLKSEL_MASK;
>+ __prci_writel(r, PRCI_CORECLKSEL_OFFSET, pd);
>
>-static struct __prci_wrpll_data __prci_gemgxlpll_data = {
>- .cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
>-};
>+ r = __prci_readl(pd, PRCI_CORECLKSEL_OFFSET); /* barrier */
>+}
>
>-/*
>- * List of clock controls provided by the PRCI
>+/**
>+ * 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 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_corepll(struct __prci_data *pd) {
>+ u32 r;
>
>-static struct __prci_clock __prci_init_clocks[] = {
>- [PRCI_CLK_COREPLL] = {
>- .name = "corepll",
>- .parent_name = "hfclk",
>- .ops = &sifive_fu540_prci_wrpll_clk_ops,
>- .pwd = &__prci_corepll_data,
>- },
>- [PRCI_CLK_DDRPLL] = {
>- .name = "ddrpll",
>- .parent_name = "hfclk",
>- .ops = &sifive_fu540_prci_wrpll_ro_clk_ops,
>- .pwd = &__prci_ddrpll_data,
>- },
>- [PRCI_CLK_GEMGXLPLL] = {
>- .name = "gemgxlpll",
>- .parent_name = "hfclk",
>- .ops = &sifive_fu540_prci_wrpll_clk_ops,
>- .pwd = &__prci_gemgxlpll_data,
>- },
>- [PRCI_CLK_TLCLK] = {
>- .name = "tlclk",
>- .parent_name = "corepll",
>- .ops = &sifive_fu540_prci_tlclksel_clk_ops,
>- },
>-};
>+ 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_register_clocks() - register clock controls in the PRCI with Linux
>+ * __prci_register_clocks() - register clock controls in the PRCI
> * @dev: Linux struct device *
> *
>- * Register the list of clock controls described in __prci_init_plls[] with
>+ * Register the list of clock controls described in
>+ __prci_init_clocks[] with
> * the Linux clock framework.
> *
> * Return: 0 upon success or a negative error code upon failure.
> */
>-static int __prci_register_clocks(struct device *dev, struct __prci_data *pd)
>+static int __prci_register_clocks(struct device *dev, struct __prci_data *pd,
>+ const struct prci_clk_desc *desc)
> {
> struct clk_init_data init = { };
> struct __prci_clock *pic;
>@@ -530,8 +311,8 @@ static int __prci_register_clocks(struct device *dev,
>struct __prci_data *pd)
> }
>
> /* Register PLLs */
>- for (i = 0; i < ARRAY_SIZE(__prci_init_clocks); ++i) {
>- pic = &__prci_init_clocks[i];
>+ for (i = 0; i < desc->num_clks; ++i) {
>+ pic = &(desc->clks[i]);
>
> init.name = pic->name;
> init.parent_names = &pic->parent_name; @@ -573,23 +354,22 @@
>static int __prci_register_clocks(struct device *dev, struct __prci_data *pd)
> return 0;
> }
>
>-/*
>- * Linux device model integration
>+/**
>+ * sifive_prci_init() - initialize prci data and check parent count
> *
>- * See the Linux device model documentation for more information about
>- * these functions.
>+ * Return: 0 upon success or a negative error code upon failure.
> */
>-static int sifive_fu540_prci_probe(struct platform_device *pdev)
>+static int sifive_prci_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> struct resource *res;
> struct __prci_data *pd;
>+ const struct prci_clk_desc *desc;
> int r;
>
>- pd = devm_kzalloc(dev,
>- struct_size(pd, hw_clks.hws,
>- ARRAY_SIZE(__prci_init_clocks)),
>- GFP_KERNEL);
>+ desc = of_device_get_match_data(&pdev->dev);
>+
>+ pd = devm_kzalloc(dev, struct_size(pd, hw_clks.hws, desc->num_clks),
>+GFP_KERNEL);
> if (!pd)
> return -ENOMEM;
>
>@@ -598,33 +378,32 @@ static int sifive_fu540_prci_probe(struct
>platform_device *pdev)
> if (IS_ERR(pd->va))
> return PTR_ERR(pd->va);
>
>- r = __prci_register_clocks(dev, pd);
>+ r = __prci_register_clocks(dev, pd, desc);
> if (r) {
> dev_err(dev, "could not register clocks: %d\n", r);
> return r;
> }
>
>- dev_dbg(dev, "SiFive FU540 PRCI probed\n");
>+ dev_dbg(dev, "SiFive PRCI probed\n");
>
> return 0;
> }
>
>-static const struct of_device_id sifive_fu540_prci_of_match[] = {
>- { .compatible = "sifive,fu540-c000-prci", },
>+static const struct of_device_id sifive_prci_of_match[] = {
>+ {.compatible = "sifive,fu540-c000-prci", .data = &prci_clk_fu540},
> {}
> };
>-MODULE_DEVICE_TABLE(of, sifive_fu540_prci_of_match);
>
>-static struct platform_driver sifive_fu540_prci_driver = {
>- .driver = {
>- .name = "sifive-fu540-prci",
>- .of_match_table = sifive_fu540_prci_of_match,
>+static struct platform_driver sifive_prci_driver = {
>+ .driver = {
>+ .name = "sifive-clk-prci",
>+ .of_match_table = sifive_prci_of_match,
> },
>- .probe = sifive_fu540_prci_probe,
>+ .probe = sifive_prci_probe,
> };
>
>-static int __init sifive_fu540_prci_init(void)
>+static int __init sifive_prci_init(void)
> {
>- return platform_driver_register(&sifive_fu540_prci_driver);
>+ return platform_driver_register(&sifive_prci_driver);
> }
>-core_initcall(sifive_fu540_prci_init);
>+core_initcall(sifive_prci_init);
>diff --git a/drivers/clk/sifive/sifive-prci.h b/drivers/clk/sifive/sifive-prci.h
>new file mode 100644
>index 000000000000..025f717bc053
>--- /dev/null
>+++ b/drivers/clk/sifive/sifive-prci.h
>@@ -0,0 +1,201 @@
>+/* SPDX-License-Identifier: GPL-2.0 */
>+/*
>+ * Copyright (C) 2018-2019 SiFive, Inc.
>+ * Wesley Terpstra
>+ * Paul Walmsley
>+ * Zong Li
>+ */
>+
>+#ifndef __SIFIVE_CLK_SIFIVE_PRCI_H
>+#define __SIFIVE_CLK_SIFIVE_PRCI_H
>+
>+#include <linux/clk/analogbits-wrpll-cln28hpc.h>
>+#include <linux/clk-provider.h>
>+#include <linux/platform_device.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)
>+
>+/* 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 24
>+#define PRCI_DDRPLLCFG1_CKE_MASK (0x1 <<
>PRCI_DDRPLLCFG1_CKE_SHIFT)
This CFG1_CLK_SHIFT should be changed to 31.
>+
>+/* 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 RCI_GEMGXLPLLCFG1_CKE_SHIFT 24
>+#define PRCI_GEMGXLPLLCFG1_CKE_MASK (0x1 <<
>PRCI_GEMGXLPLLCFG1_CKE_SHIFT)
Same here, Other than this
Reviewed-by: Pragnesh Patel <Pragnesh.patel@...ive.com>
>+
>+/* 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_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT 0
>+#define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT)
>+#define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT 1
>+#define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT)
>+#define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT 2
>+#define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT)
>+#define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT 3
>+#define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT)
>+#define PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT 5
>+#define PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT)
>+#define PRCI_DEVICESRESETREG_CHIPLINK_RST_N_SHIFT 6
>+#define PRCI_DEVICESRESETREG_CHIPLINK_RST_N_MASK \
>+ (0x1 << PRCI_DEVICESRESETREG_CHIPLINK_RST_N_SHIFT)
>+
>+/* 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)
>+
>+/*
>+ * Private structures
>+ */
>+
>+/**
>+ * struct __prci_data - per-device-instance data
>+ * @va: base virtual address of the PRCI IP block
>+ * @hw_clks: encapsulates struct clk_hw records
>+ *
>+ * PRCI per-device instance data
>+ */
>+struct __prci_data {
>+ void __iomem *va;
>+ struct clk_hw_onecell_data hw_clks;
>+};
>+
>+/**
>+ * 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
>+ *
>+ * @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;
>+};
>+
>+/**
>+ * 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 clk_ops for the Linux clock framework to use for
>+control
>+ * @hw: Linux-private clock data
>+ * @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 clk_ops *ops;
>+ struct clk_hw hw;
>+ struct __prci_wrpll_data *pwd;
>+ struct __prci_data *pd;
>+};
>+
>+#define clk_hw_to_prci_clock(pwd) container_of(pwd, struct
>+__prci_clock, hw)
>+
>+/*
>+ * 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;
>+};
>+
>+/* Core clock mux control */
>+void sifive_prci_coreclksel_use_hfclk(struct __prci_data *pd); void
>+sifive_prci_coreclksel_use_corepll(struct __prci_data *pd);
>+
>+/* Linux clock framework integration */ long
>+sifive_prci_wrpll_round_rate(struct clk_hw *hw, unsigned long rate,
>+ unsigned long *parent_rate);
>+int sifive_prci_wrpll_set_rate(struct clk_hw *hw, unsigned long rate,
>+ unsigned long parent_rate);
>+unsigned long sifive_prci_wrpll_recalc_rate(struct clk_hw *hw,
>+ unsigned long parent_rate);
>+unsigned long sifive_prci_tlclksel_recalc_rate(struct clk_hw *hw,
>+ unsigned long parent_rate);
>+
>+#endif /* __SIFIVE_CLK_SIFIVE_PRCI_H */
>--
>2.29.2
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