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[WIP] clk: starfive: Add preliminary JH7100 Clock Generator Driver

Browse source 
Add a preliminary driver for the StarFive JH7100 Clock Generator,
based on work by Ahmad Fatoum for Barebox.

Functional differences compared to the Barebox driver:
  - Addition of starfive_clk_pll_mult(), to make the PLL outputs
    reasonable,
  - Add temporary overrides for critical clocks (uart, i2c, spi) until
    we get the clock tree right, so we don't have to keep dummy clocks
    like uartclk and hs_uartclk in the DTS.

This driver sets clk_ignore_unused, else the system locks up when all
clocks deemed unused are disabled.

To be updated when the documentation becomes available.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Geert Uytterhoeven 2021-06-01 15:57:52 +02:00 • committed by Emil Renner Berthing
parent 025a84df2b
commit c88b77f77a
5 changed files with 597 additions and 0 deletions
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1
drivers/clk/Kconfig
View file

@ -411,6 +411,7 @@ source "drivers/clk/samsung/Kconfig"
source "drivers/clk/sifive/Kconfig"
source "drivers/clk/socfpga/Kconfig"
source "drivers/clk/sprd/Kconfig"
source "drivers/clk/starfive/Kconfig"
source "drivers/clk/sunxi/Kconfig"
source "drivers/clk/sunxi-ng/Kconfig"
source "drivers/clk/tegra/Kconfig"

1
drivers/clk/Makefile
View file

@ -109,6 +109,7 @@ obj-y += socfpga/
obj-$(CONFIG_PLAT_SPEAR) += spear/
obj-y += sprd/
obj-$(CONFIG_ARCH_STI) += st/
obj-$(CONFIG_SOC_STARFIVE_VIC7100) += starfive/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_SUNXI_CCU) += sunxi-ng/
obj-$(CONFIG_ARCH_TEGRA) += tegra/

9
drivers/clk/starfive/Kconfig Normal file
View file

@ -0,0 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
config CLK_STARFIVE_JH7100
bool "StarFive JH7100 clock support"
depends on SOC_STARFIVE_VIC7100 || COMPILE_TEST
default y if SOC_STARFIVE_VIC7100
help
Say yes here to support the clock controller on the StarFive JH7100
SoC.

3
drivers/clk/starfive/Makefile Normal file
View file

@ -0,0 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
# StarFive Clock
obj-$(CONFIG_CLK_STARFIVE_JH7100) += clk-starfive-jh7100.o

583
drivers/clk/starfive/clk-starfive-jh7100.c Normal file
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@ -0,0 +1,583 @@
// SPDX-License-Identifier: GPL-2.0
/*
* StarFive JH7100 Clock Generator Driver
*
* Copyright 2021 Ahmad Fatoum, Pengutronix
* Copyright (C) 2021 Glider bv
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/overflow.h>
#include <linux/platform_device.h>
#include <dt-bindings/clock/starfive-jh7100.h>
#define STARFIVE_CLK_ENABLE_SHIFT 31
#define STARFIVE_CLK_INVERT_SHIFT 30
#define STARFIVE_CLK_MUX_SHIFT 24
static const char *cpundbus_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll0_out",
[2] = "pll1_out",
[3] = "pll2_out",
};
static const char *dla_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll1_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *dsp_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll0_out",
[2] = "pll1_out",
[3] = "pll2_out",
};
static const char *gmacusb_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll0_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *perh0_root_sels[2] = {
[0] = "osc_sys",
[1] = "pll0_out",
};
static const char *perh1_root_sels[2] = {
[0] = "osc_sys",
[1] = "pll2_out",
};
static const char *vin_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll1_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *vout_root_sels[4] = {
[0] = "osc_aud",
[1] = "pll0_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *cdechifi4_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll1_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *cdec_root_sels[4] = {
[0] = "osc_sys",
[1] = "pll0_out",
[2] = "pll1_out",
[3] = "dummy",
};
static const char *voutbus_root_sels[4] = {
[0] = "osc_aud",
[1] = "pll0_out",
[2] = "pll2_out",
[3] = "dummy",
};
static const char *pll2_refclk_sels[2] = {
[0] = "osc_sys",
[1] = "osc_aud",
};
static const char *ddrc0_sels[4] = {
[0] = "ddrosc_div2",
[1] = "ddrpll_div2",
[2] = "ddrpll_div4",
[3] = "ddrpll_div8",
};
static const char *ddrc1_sels[4] = {
[0] = "ddrosc_div2",
[1] = "ddrpll_div2",
[2] = "ddrpll_div4",
[3] = "ddrpll_div8",
};
static const char *nne_bus_sels[2] = {
[0] = "cpu_axi",
[1] = "nnebus_src1",
};
static const char *usbphy_25m_sels[2] = {
[0] = "osc_sys",
[1] = "usbphy_plldiv25m",
};
static const char *gmac_tx_sels[4] = {
[0] = "gmac_gtxclk",
[1] = "gmac_mii_txclk",
[2] = "gmac_rmii_txclk",
[3] = "dummy",
};
static const char *gmac_rx_pre_sels[2] = {
[0] = "gmac_gr_mii_rxclk",
[1] = "gmac_rmii_rxclk",
};
struct clk_starfive_jh7100_priv {
spinlock_t rmw_lock;
struct device *dev;
void __iomem *base;
struct clk_hw_onecell_data clk_hws;
};
/* assume osc_sys as direct parent for clocks of yet unknown lineage */
#define UNKNOWN "osc_sys"
static struct clk_hw * __init starfive_clk_underspecifid(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent)
{
/*
* TODO With documentation available, all users of this functions can be
* migrated to one of the above or to a clk_fixed_factor with
* appropriate factor
*/
return devm_clk_hw_register_fixed_factor(priv->dev, name, parent, 0, 1,
1);
}
static struct clk_hw * __init starfive_clk_pll_mult(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent,
unsigned int mult)
{
/*
* TODO With documentation available, all users of this functions can be
* migrated to one of the above or to a clk_fixed_factor with
* appropriate factor
*/
return devm_clk_hw_register_fixed_factor(priv->dev, name, parent, 0,
mult, 1);
}
static struct clk_hw * __init starfive_clk_divider(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent,
unsigned int offset,
unsigned int width)
{
return starfive_clk_underspecifid(priv, name, parent);
}
static struct clk_hw * __init starfive_clk_gate(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent,
unsigned int offset)
{
// FIXME devm
return clk_hw_register_gate(priv->dev, name, parent,
CLK_SET_RATE_PARENT, priv->base + offset,
STARFIVE_CLK_ENABLE_SHIFT, 0,
&priv->rmw_lock);
}
static struct clk_hw * __init starfive_clk_gated_divider(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent,
unsigned int offset,
unsigned int width)
{
/* TODO divider part */
return starfive_clk_gate(priv, name, parent, offset);
}
static struct clk_hw * __init starfive_clk_gate_dis(struct clk_starfive_jh7100_priv *priv,
const char *name,
const char *parent,
unsigned int offset)
{
// FIXME devm
return clk_hw_register_gate(priv->dev, name, parent,
CLK_SET_RATE_PARENT, priv->base + offset,
STARFIVE_CLK_INVERT_SHIFT,
CLK_GATE_SET_TO_DISABLE, &priv->rmw_lock);
}
static struct clk_hw * __init starfive_clk_mux(struct clk_starfive_jh7100_priv *priv,
const char *name,
unsigned int offset,
unsigned int width,
const char * const *parents,
unsigned int num_parents)
{
return devm_clk_hw_register_mux(priv->dev, name, parents, num_parents,
0, priv->base + offset,
STARFIVE_CLK_MUX_SHIFT, width, 0,
&priv->rmw_lock);
}
static int __init starfive_clkgen_init(struct clk_starfive_jh7100_priv *priv)
{
struct clk_hw **hws = priv->clk_hws.hws;
struct clk *osc_sys, *osc_aud;
osc_sys = devm_clk_get(priv->dev, "osc_sys");
if (IS_ERR(osc_sys))
return PTR_ERR(osc_sys);
osc_aud = devm_clk_get(priv->dev, "osc_aud");
if (IS_ERR(osc_aud))
return PTR_ERR(osc_aud);
hws[JH7100_CLK_OSC_SYS] = __clk_get_hw(osc_sys);
hws[JH7100_CLK_OSC_AUD] = __clk_get_hw(osc_aud);
hws[JH7100_CLK_PLL0_OUT] = starfive_clk_pll_mult(priv, "pll0_out", "osc_sys", 40);
hws[JH7100_CLK_PLL1_OUT] = starfive_clk_pll_mult(priv, "pll1_out", "osc_sys", 64);
hws[JH7100_CLK_PLL2_OUT] = starfive_clk_pll_mult(priv, "pll2_out", "pll2_refclk", 55);
hws[JH7100_CLK_CPUNDBUS_ROOT] = starfive_clk_mux(priv, "cpundbus_root", 0x0, 2, cpundbus_root_sels, ARRAY_SIZE(cpundbus_root_sels));
hws[JH7100_CLK_DLA_ROOT] = starfive_clk_mux(priv, "dla_root", 0x4, 2, dla_root_sels, ARRAY_SIZE(dla_root_sels));
hws[JH7100_CLK_DSP_ROOT] = starfive_clk_mux(priv, "dsp_root", 0x8, 2, dsp_root_sels, ARRAY_SIZE(dsp_root_sels));
hws[JH7100_CLK_GMACUSB_ROOT] = starfive_clk_mux(priv, "gmacusb_root", 0xc, 2, gmacusb_root_sels, ARRAY_SIZE(gmacusb_root_sels));
hws[JH7100_CLK_PERH0_ROOT] = starfive_clk_mux(priv, "perh0_root", 0x10, 1, perh0_root_sels, ARRAY_SIZE(perh0_root_sels));
hws[JH7100_CLK_PERH1_ROOT] = starfive_clk_mux(priv, "perh1_root", 0x14, 1, perh1_root_sels, ARRAY_SIZE(perh1_root_sels));
hws[JH7100_CLK_VIN_ROOT] = starfive_clk_mux(priv, "vin_root", 0x18, 2, vin_root_sels, ARRAY_SIZE(vin_root_sels));
hws[JH7100_CLK_VOUT_ROOT] = starfive_clk_mux(priv, "vout_root", 0x1c, 2, vout_root_sels, ARRAY_SIZE(vout_root_sels));
hws[JH7100_CLK_AUDIO_ROOT] = starfive_clk_gated_divider(priv, "audio_root", UNKNOWN, 0x20, 4);
hws[JH7100_CLK_CDECHIFI4_ROOT] = starfive_clk_mux(priv, "cdechifi4_root", 0x24, 2, cdechifi4_root_sels, ARRAY_SIZE(cdechifi4_root_sels));
hws[JH7100_CLK_CDEC_ROOT] = starfive_clk_mux(priv, "cdec_root", 0x28, 2, cdec_root_sels, ARRAY_SIZE(cdec_root_sels));
hws[JH7100_CLK_VOUTBUS_ROOT] = starfive_clk_mux(priv, "voutbus_root", 0x2c, 2, voutbus_root_sels, ARRAY_SIZE(voutbus_root_sels));
hws[JH7100_CLK_CPUNBUS_ROOT_DIV] = starfive_clk_divider(priv, "cpunbus_root_div", "cpunbus_root", 0x30, 2);
hws[JH7100_CLK_DSP_ROOT_DIV] = starfive_clk_divider(priv, "dsp_root_div", "dsp_root", 0x34, 3);
hws[JH7100_CLK_PERH0_SRC] = starfive_clk_divider(priv, "perh0_src", "perh0_root", 0x38, 3);
hws[JH7100_CLK_PERH1_SRC] = starfive_clk_divider(priv, "perh1_src", "perh1_root", 0x3c, 3);
hws[JH7100_CLK_PLL0_TESTOUT] = starfive_clk_gated_divider(priv, "pll0_testout", "pll0_out", 0x40, 5);
hws[JH7100_CLK_PLL1_TESTOUT] = starfive_clk_gated_divider(priv, "pll1_testout", "pll1_out", 0x44, 5);
hws[JH7100_CLK_PLL2_TESTOUT] = starfive_clk_gated_divider(priv, "pll2_testout", "pll2_out", 0x48, 5);
hws[JH7100_CLK_PLL2_REF] = starfive_clk_mux(priv, "pll2_refclk", 0x4c, 1, pll2_refclk_sels, ARRAY_SIZE(pll2_refclk_sels));
hws[JH7100_CLK_CPU_CORE] = starfive_clk_divider(priv, "cpu_core", UNKNOWN, 0x50, 4);
hws[JH7100_CLK_CPU_AXI] = starfive_clk_divider(priv, "cpu_axi", UNKNOWN, 0x54, 4);
hws[JH7100_CLK_AHB_BUS] = starfive_clk_divider(priv, "ahb_bus", UNKNOWN, 0x58, 4);
hws[JH7100_CLK_APB1_BUS] = starfive_clk_divider(priv, "apb1_bus", UNKNOWN, 0x5c, 4);
hws[JH7100_CLK_APB2_BUS] = starfive_clk_divider(priv, "apb2_bus", UNKNOWN, 0x60, 4);
hws[JH7100_CLK_DOM3AHB_BUS] = starfive_clk_gate(priv, "dom3ahb_bus", UNKNOWN, 0x64);
hws[JH7100_CLK_DOM7AHB_BUS] = starfive_clk_gate(priv, "dom7ahb_bus", UNKNOWN, 0x68);
hws[JH7100_CLK_U74_CORE0] = starfive_clk_gate(priv, "u74_core0", UNKNOWN, 0x6c);
hws[JH7100_CLK_U74_CORE1] = starfive_clk_gated_divider(priv, "u74_core1", UNKNOWN, 0x70, 4);
hws[JH7100_CLK_U74_AXI] = starfive_clk_gate(priv, "u74_axi", UNKNOWN, 0x74);
hws[JH7100_CLK_U74RTC_TOGGLE] = starfive_clk_gate(priv, "u74rtc_toggle", UNKNOWN, 0x78);
hws[JH7100_CLK_SGDMA2P_AXI] = starfive_clk_gate(priv, "sgdma2p_axi", UNKNOWN, 0x7c);
hws[JH7100_CLK_DMA2PNOC_AXI] = starfive_clk_gate(priv, "dma2pnoc_axi", UNKNOWN, 0x80);
hws[JH7100_CLK_SGDMA2P_AHB] = starfive_clk_gate(priv, "sgdma2p_ahb", UNKNOWN, 0x84);
hws[JH7100_CLK_DLA_BUS] = starfive_clk_divider(priv, "dla_bus", UNKNOWN, 0x88, 3);
hws[JH7100_CLK_DLA_AXI] = starfive_clk_gate(priv, "dla_axi", UNKNOWN, 0x8c);
hws[JH7100_CLK_DLANOC_AXI] = starfive_clk_gate(priv, "dlanoc_axi", UNKNOWN, 0x90);
hws[JH7100_CLK_DLA_APB] = starfive_clk_gate(priv, "dla_apb", UNKNOWN, 0x94);
hws[JH7100_CLK_VP6_CORE] = starfive_clk_gated_divider(priv, "vp6_core", UNKNOWN, 0x98, 3);
hws[JH7100_CLK_VP6BUS_SRC] = starfive_clk_divider(priv, "vp6bus_src", UNKNOWN, 0x9c, 3);
hws[JH7100_CLK_VP6_AXI] = starfive_clk_gated_divider(priv, "vp6_axi", UNKNOWN, 0xa0, 3);
hws[JH7100_CLK_VCDECBUS_SRC] = starfive_clk_divider(priv, "vcdecbus_src", UNKNOWN, 0xa4, 3);
hws[JH7100_CLK_VDEC_BUS] = starfive_clk_divider(priv, "vdec_bus", UNKNOWN, 0xa8, 4);
hws[JH7100_CLK_VDEC_AXI] = starfive_clk_gate(priv, "vdec_axi", UNKNOWN, 0xac);
hws[JH7100_CLK_VDECBRG_MAIN] = starfive_clk_gate(priv, "vdecbrg_mainclk", UNKNOWN, 0xb0);
hws[JH7100_CLK_VDEC_BCLK] = starfive_clk_gated_divider(priv, "vdec_bclk", UNKNOWN, 0xb4, 4);
hws[JH7100_CLK_VDEC_CCLK] = starfive_clk_gated_divider(priv, "vdec_cclk", UNKNOWN, 0xb8, 4);
hws[JH7100_CLK_VDEC_APB] = starfive_clk_gate(priv, "vdec_apb", UNKNOWN, 0xbc);
hws[JH7100_CLK_JPEG_AXI] = starfive_clk_gated_divider(priv, "jpeg_axi", UNKNOWN, 0xc0, 4);
hws[JH7100_CLK_JPEG_CCLK] = starfive_clk_gated_divider(priv, "jpeg_cclk", UNKNOWN, 0xc4, 4);
hws[JH7100_CLK_JPEG_APB] = starfive_clk_gate(priv, "jpeg_apb", UNKNOWN, 0xc8);
hws[JH7100_CLK_GC300_2X] = starfive_clk_gated_divider(priv, "gc300_2x", UNKNOWN, 0xcc, 4);
hws[JH7100_CLK_GC300_AHB] = starfive_clk_gate(priv, "gc300_ahb", UNKNOWN, 0xd0);
hws[JH7100_CLK_JPCGC300_AXIBUS] = starfive_clk_divider(priv, "jpcgc300_axibus", UNKNOWN, 0xd4, 4);
hws[JH7100_CLK_GC300_AXI] = starfive_clk_gate(priv, "gc300_axi", UNKNOWN, 0xd8);
hws[JH7100_CLK_JPCGC300_MAIN] = starfive_clk_gate(priv, "jpcgc300_mainclk", UNKNOWN, 0xdc);
hws[JH7100_CLK_VENC_BUS] = starfive_clk_divider(priv, "venc_bus", UNKNOWN, 0xe0, 4);
hws[JH7100_CLK_VENC_AXI] = starfive_clk_gate(priv, "venc_axi", UNKNOWN, 0xe4);
hws[JH7100_CLK_VENCBRG_MAIN] = starfive_clk_gate(priv, "vencbrg_mainclk", UNKNOWN, 0xe8);
hws[JH7100_CLK_VENC_BCLK] = starfive_clk_gated_divider(priv, "venc_bclk", UNKNOWN, 0xec, 4);
hws[JH7100_CLK_VENC_CCLK] = starfive_clk_gated_divider(priv, "venc_cclk", UNKNOWN, 0xf0, 4);
hws[JH7100_CLK_VENC_APB] = starfive_clk_gate(priv, "venc_apb", UNKNOWN, 0xf4);
hws[JH7100_CLK_DDRPLL_DIV2] = starfive_clk_gated_divider(priv, "ddrpll_div2", UNKNOWN, 0xf8, 2);
hws[JH7100_CLK_DDRPLL_DIV4] = starfive_clk_gated_divider(priv, "ddrpll_div4", UNKNOWN, 0xfc, 2);
hws[JH7100_CLK_DDRPLL_DIV8] = starfive_clk_gated_divider(priv, "ddrpll_div8", UNKNOWN, 0x100, 2);
hws[JH7100_CLK_DDROSC_DIV2] = starfive_clk_gated_divider(priv, "ddrosc_div2", UNKNOWN, 0x104, 2);
hws[JH7100_CLK_DDRC0] = starfive_clk_mux(priv, "ddrc0", 0x108, 2, ddrc0_sels, ARRAY_SIZE(ddrc0_sels));
hws[JH7100_CLK_DDRC1] = starfive_clk_mux(priv, "ddrc1", 0x10c, 2, ddrc1_sels, ARRAY_SIZE(ddrc1_sels));
hws[JH7100_CLK_DDRPHY_APB] = starfive_clk_gate(priv, "ddrphy_apb", UNKNOWN, 0x110);
hws[JH7100_CLK_NOC_ROB] = starfive_clk_divider(priv, "noc_rob", UNKNOWN, 0x114, 4);
hws[JH7100_CLK_NOC_COG] = starfive_clk_divider(priv, "noc_cog", UNKNOWN, 0x118, 4);
hws[JH7100_CLK_NNE_AHB] = starfive_clk_gate(priv, "nne_ahb", UNKNOWN, 0x11c);
hws[JH7100_CLK_NNEBUS_SRC1] = starfive_clk_divider(priv, "nnebus_src1", UNKNOWN, 0x120, 3);
hws[JH7100_CLK_NNE_BUS] = starfive_clk_mux(priv, "nne_bus", 0x124, 2, nne_bus_sels, ARRAY_SIZE(nne_bus_sels));
hws[JH7100_CLK_NNE_AXI] = starfive_clk_gate(priv, "nne_axi", UNKNOWN, 0x128);
hws[JH7100_CLK_NNENOC_AXI] = starfive_clk_gate(priv, "nnenoc_axi", UNKNOWN, 0x12c);
hws[JH7100_CLK_DLASLV_AXI] = starfive_clk_gate(priv, "dlaslv_axi", UNKNOWN, 0x130);
hws[JH7100_CLK_DSPX2C_AXI] = starfive_clk_gate(priv, "dspx2c_axi", UNKNOWN, 0x134);
hws[JH7100_CLK_HIFI4_SRC] = starfive_clk_divider(priv, "hifi4_src", UNKNOWN, 0x138, 3);
hws[JH7100_CLK_HIFI4_COREFREE] = starfive_clk_divider(priv, "hifi4_corefree", UNKNOWN, 0x13c, 4);
hws[JH7100_CLK_HIFI4_CORE] = starfive_clk_gate(priv, "hifi4_core", UNKNOWN, 0x140);
hws[JH7100_CLK_HIFI4_BUS] = starfive_clk_divider(priv, "hifi4_bus", UNKNOWN, 0x144, 4);
hws[JH7100_CLK_HIFI4_AXI] = starfive_clk_gate(priv, "hifi4_axi", UNKNOWN, 0x148);
hws[JH7100_CLK_HIFI4NOC_AXI] = starfive_clk_gate(priv, "hifi4noc_axi", UNKNOWN, 0x14c);
hws[JH7100_CLK_SGDMA1P_BUS] = starfive_clk_divider(priv, "sgdma1p_bus", UNKNOWN, 0x150, 4);
hws[JH7100_CLK_SGDMA1P_AXI] = starfive_clk_gate(priv, "sgdma1p_axi", UNKNOWN, 0x154);
hws[JH7100_CLK_DMA1P_AXI] = starfive_clk_gate(priv, "dma1p_axi", UNKNOWN, 0x158);
hws[JH7100_CLK_X2C_AXI] = starfive_clk_gated_divider(priv, "x2c_axi", UNKNOWN, 0x15c, 4);
hws[JH7100_CLK_USB_BUS] = starfive_clk_divider(priv, "usb_bus", UNKNOWN, 0x160, 4);
hws[JH7100_CLK_USB_AXI] = starfive_clk_gate(priv, "usb_axi", UNKNOWN, 0x164);
hws[JH7100_CLK_USBNOC_AXI] = starfive_clk_gate(priv, "usbnoc_axi", UNKNOWN, 0x168);
hws[JH7100_CLK_USBPHY_ROOTDIV] = starfive_clk_divider(priv, "usbphy_rootdiv", UNKNOWN, 0x16c, 3);
hws[JH7100_CLK_USBPHY_125M] = starfive_clk_gated_divider(priv, "usbphy_125m", UNKNOWN, 0x170, 4);
hws[JH7100_CLK_USBPHY_PLLDIV25M] = starfive_clk_gated_divider(priv, "usbphy_plldiv25m", UNKNOWN, 0x174, 6);
hws[JH7100_CLK_USBPHY_25M] = starfive_clk_mux(priv, "usbphy_25m", 0x178, 1, usbphy_25m_sels, ARRAY_SIZE(usbphy_25m_sels));
hws[JH7100_CLK_AUDIO_DIV] = starfive_clk_divider(priv, "audio_div", UNKNOWN, 0x17c, 18);
hws[JH7100_CLK_AUDIO_SRC] = starfive_clk_gate(priv, "audio_src", UNKNOWN, 0x180);
hws[JH7100_CLK_AUDIO_12288] = starfive_clk_gate(priv, "audio_12288", UNKNOWN, 0x184);
hws[JH7100_CLK_VIN_SRC] = starfive_clk_gated_divider(priv, "vin_src", UNKNOWN, 0x188, 3);
hws[JH7100_CLK_ISP0_BUS] = starfive_clk_divider(priv, "isp0_bus", UNKNOWN, 0x18c, 4);
hws[JH7100_CLK_ISP0_AXI] = starfive_clk_gate(priv, "isp0_axi", UNKNOWN, 0x190);
hws[JH7100_CLK_ISP0NOC_AXI] = starfive_clk_gate(priv, "isp0noc_axi", UNKNOWN, 0x194);
hws[JH7100_CLK_ISPSLV_AXI] = starfive_clk_gate(priv, "ispslv_axi", UNKNOWN, 0x198);
hws[JH7100_CLK_ISP1_BUS] = starfive_clk_divider(priv, "isp1_bus", UNKNOWN, 0x19c, 4);
hws[JH7100_CLK_ISP1_AXI] = starfive_clk_gate(priv, "isp1_axi", UNKNOWN, 0x1a0);
hws[JH7100_CLK_ISP1NOC_AXI] = starfive_clk_gate(priv, "isp1noc_axi", UNKNOWN, 0x1a4);
hws[JH7100_CLK_VIN_BUS] = starfive_clk_divider(priv, "vin_bus", UNKNOWN, 0x1a8, 4);
hws[JH7100_CLK_VIN_AXI] = starfive_clk_gate(priv, "vin_axi", UNKNOWN, 0x1ac);
hws[JH7100_CLK_VINNOC_AXI] = starfive_clk_gate(priv, "vinnoc_axi", UNKNOWN, 0x1b0);
hws[JH7100_CLK_VOUT_SRC] = starfive_clk_gated_divider(priv, "vout_src", UNKNOWN, 0x1b4, 3);
hws[JH7100_CLK_DISPBUS_SRC] = starfive_clk_divider(priv, "dispbus_src", UNKNOWN, 0x1b8, 3);
hws[JH7100_CLK_DISP_BUS] = starfive_clk_divider(priv, "disp_bus", UNKNOWN, 0x1bc, 3);
hws[JH7100_CLK_DISP_AXI] = starfive_clk_gate(priv, "disp_axi", UNKNOWN, 0x1c0);
hws[JH7100_CLK_DISPNOC_AXI] = starfive_clk_gate(priv, "dispnoc_axi", UNKNOWN, 0x1c4);
hws[JH7100_CLK_SDIO0_AHB] = starfive_clk_gate(priv, "sdio0_ahb", UNKNOWN, 0x1c8);
hws[JH7100_CLK_SDIO0_CCLKINT] = starfive_clk_gated_divider(priv, "sdio0_cclkint", UNKNOWN, 0x1cc, 5);
hws[JH7100_CLK_SDIO0_CCLKINT_INV] = starfive_clk_gate_dis(priv, "sdio0_cclkint_inv", UNKNOWN, 0x1d0);
hws[JH7100_CLK_SDIO1_AHB] = starfive_clk_gate(priv, "sdio1_ahb", UNKNOWN, 0x1d4);
hws[JH7100_CLK_SDIO1_CCLKINT] = starfive_clk_gated_divider(priv, "sdio1_cclkint", UNKNOWN, 0x1d8, 5);
hws[JH7100_CLK_SDIO1_CCLKINT_INV] = starfive_clk_gate_dis(priv, "sdio1_cclkint_inv", UNKNOWN, 0x1dc);
hws[JH7100_CLK_GMAC_AHB] = starfive_clk_gate(priv, "gmac_ahb", UNKNOWN, 0x1e0);
hws[JH7100_CLK_GMAC_ROOT_DIV] = starfive_clk_divider(priv, "gmac_root_div", UNKNOWN, 0x1e4, 4);
hws[JH7100_CLK_GMAC_PTP_REF] = starfive_clk_gated_divider(priv, "gmac_ptp_refclk", UNKNOWN, 0x1e8, 5);
hws[JH7100_CLK_GMAC_GTX] = starfive_clk_gated_divider(priv, "gmac_gtxclk", UNKNOWN, 0x1ec, 8);
hws[JH7100_CLK_GMAC_RMII_TX] = starfive_clk_gated_divider(priv, "gmac_rmii_txclk", UNKNOWN, 0x1f0, 4);
hws[JH7100_CLK_GMAC_RMII_RX] = starfive_clk_gated_divider(priv, "gmac_rmii_rxclk", UNKNOWN, 0x1f4, 4);
hws[JH7100_CLK_GMAC_TX] = starfive_clk_mux(priv, "gmac_tx", 0x1f8, 2, gmac_tx_sels, ARRAY_SIZE(gmac_tx_sels));
hws[JH7100_CLK_GMAC_TX_INV] = starfive_clk_gate_dis(priv, "gmac_tx_inv", UNKNOWN, 0x1fc);
hws[JH7100_CLK_GMAC_RX_PRE] = starfive_clk_mux(priv, "gmac_rx_pre", 0x200, 1, gmac_rx_pre_sels, ARRAY_SIZE(gmac_rx_pre_sels));
hws[JH7100_CLK_GMAC_RX_INV] = starfive_clk_gate_dis(priv, "gmac_rx_inv", UNKNOWN, 0x204);
hws[JH7100_CLK_GMAC_RMII] = starfive_clk_gate(priv, "gmac_rmii", UNKNOWN, 0x208);
hws[JH7100_CLK_GMAC_TOPHYREF] = starfive_clk_gated_divider(priv, "gmac_tophyref", UNKNOWN, 0x20c, 7);
hws[JH7100_CLK_SPI2AHB_AHB] = starfive_clk_gate(priv, "spi2ahb_ahb", UNKNOWN, 0x210);
hws[JH7100_CLK_SPI2AHB_CORE] = starfive_clk_gated_divider(priv, "spi2ahb_core", UNKNOWN, 0x214, 5);
hws[JH7100_CLK_EZMASTER_AHB] = starfive_clk_gate(priv, "ezmaster_ahb", UNKNOWN, 0x218);
hws[JH7100_CLK_E24_AHB] = starfive_clk_gate(priv, "e24_ahb", UNKNOWN, 0x21c);
hws[JH7100_CLK_E24RTC_TOGGLE] = starfive_clk_gate(priv, "e24rtc_toggle", UNKNOWN, 0x220);
hws[JH7100_CLK_QSPI_AHB] = starfive_clk_gate(priv, "qspi_ahb", UNKNOWN, 0x224);
hws[JH7100_CLK_QSPI_APB] = starfive_clk_gate(priv, "qspi_apb", UNKNOWN, 0x228);
hws[JH7100_CLK_QSPI_REF] = starfive_clk_gated_divider(priv, "qspi_refclk", UNKNOWN, 0x22c, 5);
hws[JH7100_CLK_SEC_AHB] = starfive_clk_gate(priv, "sec_ahb", UNKNOWN, 0x230);
hws[JH7100_CLK_AES] = starfive_clk_gate(priv, "aes_clk", UNKNOWN, 0x234);
hws[JH7100_CLK_SHA] = starfive_clk_gate(priv, "sha_clk", UNKNOWN, 0x238);
hws[JH7100_CLK_PKA] = starfive_clk_gate(priv, "pka_clk", UNKNOWN, 0x23c);
hws[JH7100_CLK_TRNG_APB] = starfive_clk_gate(priv, "trng_apb", UNKNOWN, 0x240);
hws[JH7100_CLK_OTP_APB] = starfive_clk_gate(priv, "otp_apb", UNKNOWN, 0x244);
hws[JH7100_CLK_UART0_APB] = starfive_clk_gate(priv, "uart0_apb", UNKNOWN, 0x248);
hws[JH7100_CLK_UART0_CORE] = starfive_clk_gated_divider(priv, "uart0_core", UNKNOWN, 0x24c, 6);
hws[JH7100_CLK_UART1_APB] = starfive_clk_gate(priv, "uart1_apb", UNKNOWN, 0x250);
hws[JH7100_CLK_UART1_CORE] = starfive_clk_gated_divider(priv, "uart1_core", UNKNOWN, 0x254, 6);
hws[JH7100_CLK_SPI0_APB] = starfive_clk_gate(priv, "spi0_apb", UNKNOWN, 0x258);
hws[JH7100_CLK_SPI0_CORE] = starfive_clk_gated_divider(priv, "spi0_core", UNKNOWN, 0x25c, 6);
hws[JH7100_CLK_SPI1_APB] = starfive_clk_gate(priv, "spi1_apb", UNKNOWN, 0x260);
hws[JH7100_CLK_SPI1_CORE] = starfive_clk_gated_divider(priv, "spi1_core", UNKNOWN, 0x264, 6);
hws[JH7100_CLK_I2C0_APB] = starfive_clk_gate(priv, "i2c0_apb", UNKNOWN, 0x268);
hws[JH7100_CLK_I2C0_CORE] = starfive_clk_gated_divider(priv, "i2c0_core", UNKNOWN, 0x26c, 6);
hws[JH7100_CLK_I2C1_APB] = starfive_clk_gate(priv, "i2c1_apb", UNKNOWN, 0x270);
hws[JH7100_CLK_I2C1_CORE] = starfive_clk_gated_divider(priv, "i2c1_core", UNKNOWN, 0x274, 6);
hws[JH7100_CLK_GPIO_APB] = starfive_clk_gate(priv, "gpio_apb", UNKNOWN, 0x278);
hws[JH7100_CLK_UART2_APB] = starfive_clk_gate(priv, "uart2_apb", UNKNOWN, 0x27c);
hws[JH7100_CLK_UART2_CORE] = starfive_clk_gated_divider(priv, "uart2_core", UNKNOWN, 0x280, 6);
hws[JH7100_CLK_UART3_APB] = starfive_clk_gate(priv, "uart3_apb", UNKNOWN, 0x284);
hws[JH7100_CLK_UART3_CORE] = starfive_clk_gated_divider(priv, "uart3_core", UNKNOWN, 0x288, 6);
hws[JH7100_CLK_SPI2_APB] = starfive_clk_gate(priv, "spi2_apb", UNKNOWN, 0x28c);
hws[JH7100_CLK_SPI2_CORE] = starfive_clk_gated_divider(priv, "spi2_core", UNKNOWN, 0x290, 6);
hws[JH7100_CLK_SPI3_APB] = starfive_clk_gate(priv, "spi3_apb", UNKNOWN, 0x294);
hws[JH7100_CLK_SPI3_CORE] = starfive_clk_gated_divider(priv, "spi3_core", UNKNOWN, 0x298, 6);
hws[JH7100_CLK_I2C2_APB] = starfive_clk_gate(priv, "i2c2_apb", UNKNOWN, 0x29c);
hws[JH7100_CLK_I2C2_CORE] = starfive_clk_gated_divider(priv, "i2c2_core", UNKNOWN, 0x2a0, 6);
hws[JH7100_CLK_I2C3_APB] = starfive_clk_gate(priv, "i2c3_apb", UNKNOWN, 0x2a4);
hws[JH7100_CLK_I2C3_CORE] = starfive_clk_gated_divider(priv, "i2c3_core", UNKNOWN, 0x2a8, 6);
hws[JH7100_CLK_WDTIMER_APB] = starfive_clk_gate(priv, "wdtimer_apb", UNKNOWN, 0x2ac);
hws[JH7100_CLK_WDT_CORE] = starfive_clk_gated_divider(priv, "wdt_coreclk", UNKNOWN, 0x2b0, 6);
hws[JH7100_CLK_TIMER0_CORE] = starfive_clk_gated_divider(priv, "timer0_coreclk", UNKNOWN, 0x2b4, 6);
hws[JH7100_CLK_TIMER1_CORE] = starfive_clk_gated_divider(priv, "timer1_coreclk", UNKNOWN, 0x2b8, 6);
hws[JH7100_CLK_TIMER2_CORE] = starfive_clk_gated_divider(priv, "timer2_coreclk", UNKNOWN, 0x2bc, 6);
hws[JH7100_CLK_TIMER3_CORE] = starfive_clk_gated_divider(priv, "timer3_coreclk", UNKNOWN, 0x2c0, 6);
hws[JH7100_CLK_TIMER4_CORE] = starfive_clk_gated_divider(priv, "timer4_coreclk", UNKNOWN, 0x2c4, 6);
hws[JH7100_CLK_TIMER5_CORE] = starfive_clk_gated_divider(priv, "timer5_coreclk", UNKNOWN, 0x2c8, 6);
hws[JH7100_CLK_TIMER6_CORE] = starfive_clk_gated_divider(priv, "timer6_coreclk", UNKNOWN, 0x2cc, 6);
hws[JH7100_CLK_VP6INTC_APB] = starfive_clk_gate(priv, "vp6intc_apb", UNKNOWN, 0x2d0);
hws[JH7100_CLK_PWM_APB] = starfive_clk_gate(priv, "pwm_apb", UNKNOWN, 0x2d4);
hws[JH7100_CLK_MSI_APB] = starfive_clk_gate(priv, "msi_apb", UNKNOWN, 0x2d8);
hws[JH7100_CLK_TEMP_APB] = starfive_clk_gate(priv, "temp_apb", UNKNOWN, 0x2dc);
hws[JH7100_CLK_TEMP_SENSE] = starfive_clk_gated_divider(priv, "temp_sense", UNKNOWN, 0x2e0, 5);
hws[JH7100_CLK_SYSERR_APB] = starfive_clk_gate(priv, "syserr_apb", UNKNOWN, 0x2e4);
{
// FIXME Temporary overrides until we get the clock tree right
#define CLK_AXI 0
#define CLK_AHB0 1
#define CLK_AHB2 2
#define CLK_APB1 3
#define CLK_APB2 4
#define CLK_VPU 5
#define CLK_JPU 6
#define CLK_PWM 7
#define CLK_DWMMC_BIU 8
#define CLK_DWMMC_CIU 9
#define CLK_UART 10
#define CLK_HS_UART 11
#define CLK_I2C0 12
#define CLK_I2C2 13
#define CLK_QSPI 14
#define CLK_SPI 15
#define CLK_GMAC 16
#define CLK_HF 17
#define CLK_RTC 18
struct clk_hw **hws = priv->clk_hws.hws;
extern bool clk_ignore_unused;
static struct tmp_clk {
const char *name;
unsigned int mult;
unsigned int div;
struct clk_hw *hw;
} tmp_clks[] = {
[CLK_AXI] = { "axi", .mult = 20, .div = 1 },
[CLK_AHB0] = { "ahb0", .mult = 10, .div = 1 },
[CLK_AHB2] = { "ahb2", .mult = 5, .div = 1 },
[CLK_APB1] = { "apb1", .mult = 5, .div = 1 },
[CLK_APB2] = { "apb2", .mult = 5, .div = 1 },
[CLK_VPU] = { "vpu", .mult = 16, .div = 1 },
[CLK_JPU] = { "jpu", .mult = 40, .div = 3 },
[CLK_PWM] = { "pwm", .mult = 5, .div = 1 },
[CLK_DWMMC_BIU] = { "dwmmc-biu", .mult = 4, .div = 1 },
[CLK_DWMMC_CIU] = { "dwmmc-ciu", .mult = 4, .div = 1 },
[CLK_UART] = { "uart", .mult = 4, .div = 1 },
[CLK_HS_UART] = { "hs_uart", .mult = 297, .div = 100 },
[CLK_I2C0] = { "i2c0", .mult = 99, .div = 50 },
[CLK_I2C2] = { "i2c2", .mult = 2, .div = 1 },
[CLK_QSPI] = { "qspi", .mult = 2, .div = 1 },
[CLK_SPI] = { "spi", .mult = 2, .div = 1 },
[CLK_GMAC] = { "gmac", .mult = 1, .div = 1 },
[CLK_HF] = { "hf", .mult = 1, .div = 1 },
[CLK_RTC] = { "rtc", .mult = 1, .div = 4 }
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(tmp_clks); i++) {
struct tmp_clk *clk = &tmp_clks[i];
clk->hw = devm_clk_hw_register_fixed_factor(priv->dev,
clk->name, "osc_sys", 0, clk->mult, clk->div);
}
hws[JH7100_CLK_UART0_APB] = tmp_clks[CLK_APB2].hw;
hws[JH7100_CLK_UART0_CORE] = tmp_clks[CLK_HS_UART].hw;
// hws[JH7100_CLK_UART1_APB] = tmp_clks[CLK_APB2].hw;
// hws[JH7100_CLK_UART1_CORE] = tmp_clks[CLK_HS_UART].hw;
// hws[JH7100_CLK_UART2_APB] = tmp_clks[CLK_APB2].hw;
// hws[JH7100_CLK_UART2_CORE] = tmp_clks[CLK_UART].hw;
hws[JH7100_CLK_UART3_APB] = tmp_clks[CLK_APB2].hw;
hws[JH7100_CLK_UART3_CORE] = tmp_clks[CLK_UART].hw;
hws[JH7100_CLK_I2C0_APB] = tmp_clks[CLK_APB2].hw;
hws[JH7100_CLK_I2C0_CORE] = tmp_clks[CLK_I2C0].hw;
hws[JH7100_CLK_I2C1_APB] = tmp_clks[CLK_APB2].hw;
hws[JH7100_CLK_I2C1_CORE] = tmp_clks[CLK_I2C0].hw;
hws[JH7100_CLK_I2C2_APB] = tmp_clks[CLK_APB2].hw;
hws[JH7100_CLK_I2C2_CORE] = tmp_clks[CLK_I2C2].hw;
// hws[JH7100_CLK_I2C3_APB] = tmp_clks[CLK_APB2].hw;
// hws[JH7100_CLK_I2C3_CORE] = tmp_clks[CLK_I2C2].hw;
// hws[JH7100_CLK_SPI0_CORE] = tmp_clks[CLK_SPI].hw;
// hws[JH7100_CLK_SPI1_CORE] = tmp_clks[CLK_SPI].hw;
hws[JH7100_CLK_SPI2_CORE] = tmp_clks[CLK_SPI].hw;
// hws[JH7100_CLK_SPI3_CORE] = tmp_clks[CLK_SPI].hw;
clk_ignore_unused = true;
}
return 0;
}
static int __init clk_starfive_jh7100_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct clk_starfive_jh7100_priv *priv;
int error;
priv = devm_kzalloc(dev, struct_size(priv, clk_hws.hws, JH7100_CLK_END), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->dev = dev;
priv->clk_hws.num = JH7100_CLK_END;
spin_lock_init(&priv->rmw_lock);
priv->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
error = starfive_clkgen_init(priv);
if (error)
goto cleanup;
error = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
&priv->clk_hws);
if (error)
goto cleanup;
return 0;
cleanup:
// FIXME unregister gate clocks on failure
return error;
}
static const struct of_device_id clk_starfive_jh7100_match[] = {
{
.compatible = "starfive,jh7100-clkgen",
},
{ /* sentinel */ }
};
static struct platform_driver clk_starfive_jh7100_driver = {
.driver = {
.name = "clk-starfive-jh7100",
.of_match_table = clk_starfive_jh7100_match,
},
};
static int __init clk_starfive_jh7100_init(void)
{
return platform_driver_probe(&clk_starfive_jh7100_driver,
clk_starfive_jh7100_probe);
}
subsys_initcall(clk_starfive_jh7100_init);
MODULE_DESCRIPTION("StarFive JH7100 Clock Generator Driver");
MODULE_AUTHOR("Geert Uytterhoeven <geert@linux-m68k.org>");
MODULE_LICENSE("GPL v2");