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[80.71.140.73]) by smtp.gmail.com with ESMTPSA id h7sm3144847edt.37.2021.10.21.10.42.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Oct 2021 10:42:39 -0700 (PDT) From: Emil Renner Berthing To: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org Cc: Geert Uytterhoeven , Palmer Dabbelt , Paul Walmsley , Rob Herring , Michael Turquette , Stephen Boyd , Thomas Gleixner , Marc Zyngier , Philipp Zabel , Linus Walleij , Greg Kroah-Hartman , Daniel Lezcano , Andy Shevchenko , Jiri Slaby , Maximilian Luz , Sagar Kadam , Drew Fustini , Michael Zhu , Fu Wei , Anup Patel , Atish Patra , Matteo Croce , linux-kernel@vger.kernel.org, Emil Renner Berthing Subject: [PATCH v2 06/16] clk: starfive: Add JH7100 clock generator driver Date: Thu, 21 Oct 2021 19:42:13 +0200 Message-Id: <20211021174223.43310-7-kernel@esmil.dk> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211021174223.43310-1-kernel@esmil.dk> References: <20211021174223.43310-1-kernel@esmil.dk> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211021_104241_590049_93535BC7 X-CRM114-Status: GOOD ( 25.10 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Geert Uytterhoeven Add a driver for the StarFive JH7100 clock generator. Signed-off-by: Geert Uytterhoeven Co-developed-by: Emil Renner Berthing Signed-off-by: Emil Renner Berthing --- MAINTAINERS | 7 + drivers/clk/Kconfig | 1 + drivers/clk/Makefile | 1 + drivers/clk/starfive/Kconfig | 9 + drivers/clk/starfive/Makefile | 3 + drivers/clk/starfive/clk-starfive-jh7100.c | 776 +++++++++++++++++++++ 6 files changed, 797 insertions(+) create mode 100644 drivers/clk/starfive/Kconfig create mode 100644 drivers/clk/starfive/Makefile create mode 100644 drivers/clk/starfive/clk-starfive-jh7100.c diff --git a/MAINTAINERS b/MAINTAINERS index 8d118d7957d2..e5a19b70dfbb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17848,6 +17848,13 @@ M: Ion Badulescu S: Odd Fixes F: drivers/net/ethernet/adaptec/starfire* +STARFIVE JH7100 CLOCK DRIVER +M: Emil Renner Berthing +S: Maintained +F: Documentation/devicetree/bindings/clock/starfive,jh7100-clkgen.yaml +F: drivers/clk/starfive/clk-starfive-jh7100.c +F: include/dt-bindings/clock/starfive-jh7100.h + STATIC BRANCH/CALL M: Peter Zijlstra M: Josh Poimboeuf diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index c5b3dc97396a..c91931c94888 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -412,6 +412,7 @@ 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" diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index e42312121e51..a9bb2478fbdd 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -109,6 +109,7 @@ obj-y += socfpga/ obj-$(CONFIG_PLAT_SPEAR) += spear/ obj-y += sprd/ obj-$(CONFIG_ARCH_STI) += st/ +obj-$(CONFIG_SOC_STARFIVE) += starfive/ obj-$(CONFIG_ARCH_SUNXI) += sunxi/ obj-$(CONFIG_SUNXI_CCU) += sunxi-ng/ obj-$(CONFIG_ARCH_TEGRA) += tegra/ diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig new file mode 100644 index 000000000000..c0fa9d5e641f --- /dev/null +++ b/drivers/clk/starfive/Kconfig @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 + +config CLK_STARFIVE_JH7100 + bool "StarFive JH7100 clock support" + depends on SOC_STARFIVE || COMPILE_TEST + default SOC_STARFIVE + help + Say yes here to support the clock controller on the StarFive JH7100 + SoC. diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile new file mode 100644 index 000000000000..09759cc73530 --- /dev/null +++ b/drivers/clk/starfive/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 +# StarFive Clock +obj-$(CONFIG_CLK_STARFIVE_JH7100) += clk-starfive-jh7100.o diff --git a/drivers/clk/starfive/clk-starfive-jh7100.c b/drivers/clk/starfive/clk-starfive-jh7100.c new file mode 100644 index 000000000000..f109576f18c5 --- /dev/null +++ b/drivers/clk/starfive/clk-starfive-jh7100.c @@ -0,0 +1,776 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * StarFive JH7100 Clock Generator Driver + * + * Copyright 2021 Ahmad Fatoum, Pengutronix + * Copyright (C) 2021 Glider bv + * Copyright (C) 2021 Emil Renner Berthing + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define JH7100_CLK_ENABLE_SHIFT 31 +#define JH7100_CLK_INVERT_SHIFT 30 +#define JH7100_CLK_MUX_SHIFT 24 + +#define JH7100_CLK_ENABLE BIT(31) +#define JH7100_CLK_INVERT BIT(30) +#define JH7100_CLK_MUX_MASK GENMASK(27, 24) +#define JH7100_CLK_DIV_MASK GENMASK(23, 0) + +static const char *const cpundbus_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll0_out", + [2] = "pll1_out", + [3] = "pll2_out", +}; + +static const char *const dla_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll1_out", + [2] = "pll2_out", +}; + +static const char *const dsp_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll0_out", + [2] = "pll1_out", + [3] = "pll2_out", +}; + +static const char *const gmacusb_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll0_out", + [2] = "pll2_out", +}; + +static const char *const perh0_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll0_out", +}; + +static const char *const perh1_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll2_out", +}; + +static const char *const vin_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll1_out", + [2] = "pll2_out", +}; + +static const char *const vout_root_sels[] __initconst = { + [0] = "osc_aud", + [1] = "pll0_out", + [2] = "pll2_out", +}; + +static const char *const cdechifi4_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll1_out", + [2] = "pll2_out", +}; + +static const char *const cdec_root_sels[] __initconst = { + [0] = "osc_sys", + [1] = "pll0_out", + [2] = "pll1_out", +}; + +static const char *const voutbus_root_sels[] __initconst = { + [0] = "osc_aud", + [1] = "pll0_out", + [2] = "pll2_out", +}; + +static const char *const pll2_refclk_sels[] __initconst = { + [0] = "osc_sys", + [1] = "osc_aud", +}; + +static const char *const ddrc0_sels[] __initconst = { + [0] = "ddrosc_div2", + [1] = "ddrpll_div2", + [2] = "ddrpll_div4", + [3] = "ddrpll_div8", +}; + +static const char *const ddrc1_sels[] __initconst = { + [0] = "ddrosc_div2", + [1] = "ddrpll_div2", + [2] = "ddrpll_div4", + [3] = "ddrpll_div8", +}; + +static const char *const nne_bus_sels[] __initconst = { + [0] = "cpu_axi", + [1] = "nnebus_src1", +}; + +static const char *const usbphy_25m_sels[] __initconst = { + [0] = "osc_sys", + [1] = "usbphy_plldiv25m", +}; + +static const char *const gmac_tx_sels[] __initconst = { + [0] = "gmac_gtxclk", + [1] = "gmac_mii_txclk", + [2] = "gmac_rmii_txclk", +}; + +static const char *const gmac_rx_pre_sels[] __initconst = { + [0] = "gmac_gr_mii_rxclk", + [1] = "gmac_rmii_rxclk", +}; + +struct jh7100_clk { + struct clk_hw hw; + unsigned int idx; + u32 max; +}; + +struct clk_starfive_jh7100_priv { + /* protect registers against overlapping read-modify-write */ + spinlock_t rmw_lock; + struct device *dev; + void __iomem *base; + struct clk_hw *pll[3]; + struct jh7100_clk reg[JH7100_CLK_PLL0_OUT]; +}; + +static struct jh7100_clk *jh7100_clk_from(struct clk_hw *hw) +{ + return container_of(hw, struct jh7100_clk, hw); +} + +static struct clk_starfive_jh7100_priv *jh7100_priv_from(struct jh7100_clk *clk) +{ + return container_of(clk, struct clk_starfive_jh7100_priv, reg[clk->idx]); +} + +static u32 jh7100_clk_reg_get(struct jh7100_clk *clk) +{ + struct clk_starfive_jh7100_priv *priv = jh7100_priv_from(clk); + void __iomem *reg = priv->base + 4 * clk->idx; + + return readl_relaxed(reg); +} + +static void jh7100_clk_reg_rmw(struct jh7100_clk *clk, u32 mask, u32 value) +{ + struct clk_starfive_jh7100_priv *priv = jh7100_priv_from(clk); + void __iomem *reg = priv->base + 4 * clk->idx; + unsigned long flags; + + spin_lock_irqsave(&priv->rmw_lock, flags); + value |= readl_relaxed(reg) & ~mask; + writel_relaxed(value, reg); + spin_unlock_irqrestore(&priv->rmw_lock, flags); +} + +static int jh7100_clk_enable(struct clk_hw *hw) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + + dev_dbg(jh7100_priv_from(clk)->dev, "enable(%s)\n", clk_hw_get_name(&clk->hw)); + + jh7100_clk_reg_rmw(clk, JH7100_CLK_ENABLE, JH7100_CLK_ENABLE); + return 0; +} + +static void jh7100_clk_disable(struct clk_hw *hw) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + + dev_dbg(jh7100_priv_from(clk)->dev, "disable(%s)\n", clk_hw_get_name(&clk->hw)); + + jh7100_clk_reg_rmw(clk, JH7100_CLK_ENABLE, 0); +} + +static int jh7100_clk_is_enabled(struct clk_hw *hw) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + + return !!(jh7100_clk_reg_get(clk) & JH7100_CLK_ENABLE); +} + +static int jh7100_clk_is_parent_enabled(struct clk_hw *hw) +{ + return clk_hw_is_enabled(clk_hw_get_parent(hw)); +} + +static unsigned long jh7100_clk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + u32 value = jh7100_clk_reg_get(clk) & JH7100_CLK_DIV_MASK; + unsigned long rate; + + if (value) + rate = parent_rate / value; + else + rate = 0; + + dev_dbg(jh7100_priv_from(clk)->dev, "recalc_rate(%s, %lu) = %lu (div %u)\n", + clk_hw_get_name(&clk->hw), parent_rate, rate, value); + + return rate; +} + +static unsigned long jh7100_clk_bestdiv(struct jh7100_clk *clk, + unsigned long rate, unsigned long parent) +{ + unsigned long max = clk->max & JH7100_CLK_DIV_MASK; + unsigned long div = DIV_ROUND_UP(parent, rate); + + return min(div, max); +} + +static int jh7100_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + unsigned long parent = req->best_parent_rate; + unsigned long rate = clamp(req->rate, req->min_rate, req->max_rate); + unsigned long div = jh7100_clk_bestdiv(clk, rate, parent); + unsigned long result = parent / div; + + /* + * We want the result clamped by min_rate and max_rate if possible: + * Case 1: div hits the max divider value, which means it's less than + * parent / rate, so the result is greater than rate and min_rate in + * particular. We can't do anything about result > max_rate because the + * divider doesn't go any further. + * Case 2: div = DIV_ROUND_UP(parent, rate) which means the result is + * always lower or equal to rate and max_rate. However the result may + * turn out lower than min_rate, but then the next higher rate is fine: + * div - 1 = ceil(parent / rate) - 1 < parent / rate + * and thus + * min_rate <= rate < parent / (div - 1) + */ + if (result < req->min_rate && div > 1) { + div -= 1; + result = parent / div; + } + + dev_dbg(jh7100_priv_from(clk)->dev, + "determine_rate(%s, {%lu<=%lu<=%lu from %lu}) = %lu (div %lu)\n", + clk_hw_get_name(&clk->hw), req->min_rate, req->rate, req->max_rate, + parent, result, div); + + req->rate = result; + return 0; +} + +static int jh7100_clk_set_rate(struct clk_hw *hw, + unsigned long rate, + unsigned long parent_rate) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + unsigned long div = jh7100_clk_bestdiv(clk, rate, parent_rate); + + dev_dbg(jh7100_priv_from(clk)->dev, + "set_rate(%s, %lu, %lu) = %lu (div %lu)\n", + clk_hw_get_name(&clk->hw), rate, parent_rate, + parent_rate / div, div); + + jh7100_clk_reg_rmw(clk, JH7100_CLK_DIV_MASK, div); + return 0; +} + +static u8 jh7100_clk_get_parent(struct clk_hw *hw) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + u32 value = jh7100_clk_reg_get(clk); + + return (value & JH7100_CLK_MUX_MASK) >> JH7100_CLK_MUX_SHIFT; +} + +static int jh7100_clk_set_parent(struct clk_hw *hw, u8 index) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + u32 value = (u32)index << JH7100_CLK_MUX_SHIFT; + + dev_dbg(jh7100_priv_from(clk)->dev, "set_parent(%s, %u)\n", + clk_hw_get_name(&clk->hw), index); + + jh7100_clk_reg_rmw(clk, JH7100_CLK_MUX_MASK, value); + return 0; +} + +static int jh7100_clk_mux_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + int ret = clk_mux_determine_rate_flags(&clk->hw, req, 0); + + dev_dbg(jh7100_priv_from(clk)->dev, "determine_rate(%s) = %d\n", + clk_hw_get_name(&clk->hw), ret); + + return ret; +} + +static int jh7100_clk_get_phase(struct clk_hw *hw) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + u32 value = jh7100_clk_reg_get(clk); + + return (value & JH7100_CLK_INVERT) ? 180 : 0; +} + +static int jh7100_clk_set_phase(struct clk_hw *hw, int degrees) +{ + struct jh7100_clk *clk = jh7100_clk_from(hw); + u32 value; + + dev_dbg(jh7100_priv_from(clk)->dev, "set_phase(%s, %d)\n", + clk_hw_get_name(&clk->hw), degrees); + + if (degrees == 0) + value = 0; + else if (degrees == 180) + value = JH7100_CLK_INVERT; + else + return -EINVAL; + + jh7100_clk_reg_rmw(clk, JH7100_CLK_INVERT, value); + return 0; +} + +#ifdef CONFIG_DEBUG_FS +static void jh7100_clk_debug_init(struct clk_hw *hw, struct dentry *dentry) +{ + static const struct debugfs_reg32 jh7100_clk_reg = { + .name = "CTRL", + .offset = 0, + }; + struct jh7100_clk *clk = jh7100_clk_from(hw); + struct clk_starfive_jh7100_priv *priv = jh7100_priv_from(clk); + struct debugfs_regset32 *regset; + + regset = devm_kzalloc(priv->dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return; + + regset->regs = &jh7100_clk_reg; + regset->nregs = 1; + regset->base = priv->base + 4 * clk->idx; + + debugfs_create_regset32("registers", 0400, dentry, regset); +} +#else +#define jh7100_clk_debug_init NULL +#endif + +static const struct clk_ops jh7100_clk_gate_ops = { + .enable = jh7100_clk_enable, + .disable = jh7100_clk_disable, + .is_enabled = jh7100_clk_is_enabled, + .debug_init = jh7100_clk_debug_init, +}; + +static const struct clk_ops jh7100_clk_div_ops = { + .is_enabled = jh7100_clk_is_parent_enabled, + .recalc_rate = jh7100_clk_recalc_rate, + .determine_rate = jh7100_clk_determine_rate, + .set_rate = jh7100_clk_set_rate, + .debug_init = jh7100_clk_debug_init, +}; + +static const struct clk_ops jh7100_clk_gdiv_ops = { + .enable = jh7100_clk_enable, + .disable = jh7100_clk_disable, + .is_enabled = jh7100_clk_is_enabled, + .recalc_rate = jh7100_clk_recalc_rate, + .determine_rate = jh7100_clk_determine_rate, + .set_rate = jh7100_clk_set_rate, + .debug_init = jh7100_clk_debug_init, +}; + +static const struct clk_ops jh7100_clk_mux_ops = { + .is_enabled = jh7100_clk_is_parent_enabled, + .get_parent = jh7100_clk_get_parent, + .set_parent = jh7100_clk_set_parent, + .determine_rate = jh7100_clk_mux_determine_rate, + .debug_init = jh7100_clk_debug_init, +}; + +static const struct clk_ops jh7100_clk_gmux_ops = { + .enable = jh7100_clk_enable, + .disable = jh7100_clk_disable, + .is_enabled = jh7100_clk_is_enabled, + .get_parent = jh7100_clk_get_parent, + .set_parent = jh7100_clk_set_parent, + .determine_rate = jh7100_clk_mux_determine_rate, + .debug_init = jh7100_clk_debug_init, +}; + +static const struct clk_ops jh7100_clk_inv_ops = { + .is_enabled = jh7100_clk_is_parent_enabled, + .get_phase = jh7100_clk_get_phase, + .set_phase = jh7100_clk_set_phase, + .debug_init = jh7100_clk_debug_init, +}; + +#define JH7100_GATE(_idx, _name, _parent, _flags) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_gate_ops, \ + .parent = _parent, \ + .flags = CLK_SET_RATE_PARENT | (_flags), \ + .max = JH7100_CLK_ENABLE, \ +} + +#define JH7100__DIV(_idx, _name, _parent, _max) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_div_ops, \ + .parent = _parent, \ + .flags = 0, \ + .max = _max, \ +} + +#define JH7100_GDIV(_idx, _name, _parent, _max, _flags) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_gdiv_ops, \ + .parent = _parent, \ + .flags = (_flags), \ + .max = JH7100_CLK_ENABLE | (_max), \ +} + +#define JH7100__MUX(_idx, _name, _parents) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_mux_ops, \ + .parents = _parents, \ + .flags = 0, \ + .max = (ARRAY_SIZE(_parents) - 1) << JH7100_CLK_MUX_SHIFT, \ +} + +#define JH7100_GMUX(_idx, _name, _parents, _flags) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_gmux_ops, \ + .parents = _parents, \ + .flags = (_flags), \ + .max = JH7100_CLK_ENABLE | \ + ((ARRAY_SIZE(_parents) - 1) << JH7100_CLK_MUX_SHIFT), \ +} + +#define JH7100__INV(_idx, _name, _parent) [_idx] = { \ + .name = _name, \ + .ops = &jh7100_clk_inv_ops, \ + .parent = _parent, \ + .flags = CLK_SET_RATE_PARENT, \ + .max = JH7100_CLK_INVERT, \ +} + +static const struct { + const char *name; + const struct clk_ops *ops; + union { + const char *parent; + const char *const *parents; + }; + unsigned long flags; + u32 max; +} jh7100_clk_data[] __initconst = { + JH7100__MUX(JH7100_CLK_CPUNDBUS_ROOT, "cpundbus_root", cpundbus_root_sels), + JH7100__MUX(JH7100_CLK_DLA_ROOT, "dla_root", dla_root_sels), + JH7100__MUX(JH7100_CLK_DSP_ROOT, "dsp_root", dsp_root_sels), + JH7100__MUX(JH7100_CLK_GMACUSB_ROOT, "gmacusb_root", gmacusb_root_sels), + JH7100__MUX(JH7100_CLK_PERH0_ROOT, "perh0_root", perh0_root_sels), + JH7100__MUX(JH7100_CLK_PERH1_ROOT, "perh1_root", perh1_root_sels), + JH7100__MUX(JH7100_CLK_VIN_ROOT, "vin_root", vin_root_sels), + JH7100__MUX(JH7100_CLK_VOUT_ROOT, "vout_root", vout_root_sels), + JH7100_GDIV(JH7100_CLK_AUDIO_ROOT, "audio_root", "pll0_out", 8, 0), + JH7100__MUX(JH7100_CLK_CDECHIFI4_ROOT, "cdechifi4_root", cdechifi4_root_sels), + JH7100__MUX(JH7100_CLK_CDEC_ROOT, "cdec_root", cdec_root_sels), + JH7100__MUX(JH7100_CLK_VOUTBUS_ROOT, "voutbus_root", voutbus_root_sels), + JH7100__DIV(JH7100_CLK_CPUNBUS_ROOT_DIV, "cpunbus_root_div", "cpundbus_root", 2), + JH7100__DIV(JH7100_CLK_DSP_ROOT_DIV, "dsp_root_div", "dsp_root", 4), + JH7100__DIV(JH7100_CLK_PERH0_SRC, "perh0_src", "perh0_root", 4), + JH7100__DIV(JH7100_CLK_PERH1_SRC, "perh1_src", "perh1_root", 4), + JH7100_GDIV(JH7100_CLK_PLL0_TESTOUT, "pll0_testout", "perh0_src", 31, 0), + JH7100_GDIV(JH7100_CLK_PLL1_TESTOUT, "pll1_testout", "dla_root", 31, 0), + JH7100_GDIV(JH7100_CLK_PLL2_TESTOUT, "pll2_testout", "perh1_src", 31, 0), + JH7100__MUX(JH7100_CLK_PLL2_REF, "pll2_refclk", pll2_refclk_sels), + JH7100__DIV(JH7100_CLK_CPU_CORE, "cpu_core", "cpunbus_root_div", 8), + JH7100__DIV(JH7100_CLK_CPU_AXI, "cpu_axi", "cpu_core", 8), + JH7100__DIV(JH7100_CLK_AHB_BUS, "ahb_bus", "cpunbus_root_div", 8), + JH7100__DIV(JH7100_CLK_APB1_BUS, "apb1_bus", "ahb_bus", 8), + JH7100__DIV(JH7100_CLK_APB2_BUS, "apb2_bus", "ahb_bus", 8), + JH7100_GATE(JH7100_CLK_DOM3AHB_BUS, "dom3ahb_bus", "ahb_bus", CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_DOM7AHB_BUS, "dom7ahb_bus", "ahb_bus", CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_U74_CORE0, "u74_core0", "cpu_core", CLK_IGNORE_UNUSED), + JH7100_GDIV(JH7100_CLK_U74_CORE1, "u74_core1", "cpu_core", 8, CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_U74_AXI, "u74_axi", "cpu_axi", CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_U74RTC_TOGGLE, "u74rtc_toggle", "osc_sys", CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_SGDMA2P_AXI, "sgdma2p_axi", "cpu_axi", 0), + JH7100_GATE(JH7100_CLK_DMA2PNOC_AXI, "dma2pnoc_axi", "cpu_axi", 0), + JH7100_GATE(JH7100_CLK_SGDMA2P_AHB, "sgdma2p_ahb", "ahb_bus", 0), + JH7100__DIV(JH7100_CLK_DLA_BUS, "dla_bus", "dla_root", 4), + JH7100_GATE(JH7100_CLK_DLA_AXI, "dla_axi", "dla_bus", 0), + JH7100_GATE(JH7100_CLK_DLANOC_AXI, "dlanoc_axi", "dla_bus", 0), + JH7100_GATE(JH7100_CLK_DLA_APB, "dla_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_VP6_CORE, "vp6_core", "dsp_root_div", 4, 0), + JH7100__DIV(JH7100_CLK_VP6BUS_SRC, "vp6bus_src", "dsp_root", 4), + JH7100_GDIV(JH7100_CLK_VP6_AXI, "vp6_axi", "vp6bus_src", 4, 0), + JH7100__DIV(JH7100_CLK_VCDECBUS_SRC, "vcdecbus_src", "cdechifi4_root", 4), + JH7100__DIV(JH7100_CLK_VDEC_BUS, "vdec_bus", "vcdecbus_src", 8), + JH7100_GATE(JH7100_CLK_VDEC_AXI, "vdec_axi", "vdec_bus", 0), + JH7100_GATE(JH7100_CLK_VDECBRG_MAIN, "vdecbrg_mainclk", "vdec_bus", 0), + JH7100_GDIV(JH7100_CLK_VDEC_BCLK, "vdec_bclk", "vcdecbus_src", 8, 0), + JH7100_GDIV(JH7100_CLK_VDEC_CCLK, "vdec_cclk", "cdec_root", 8, 0), + JH7100_GATE(JH7100_CLK_VDEC_APB, "vdec_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_JPEG_AXI, "jpeg_axi", "cpunbus_root_div", 8, 0), + JH7100_GDIV(JH7100_CLK_JPEG_CCLK, "jpeg_cclk", "cpunbus_root_div", 8, 0), + JH7100_GATE(JH7100_CLK_JPEG_APB, "jpeg_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_GC300_2X, "gc300_2x", "cdechifi4_root", 8, 0), + JH7100_GATE(JH7100_CLK_GC300_AHB, "gc300_ahb", "ahb_bus", 0), + JH7100__DIV(JH7100_CLK_JPCGC300_AXIBUS, "jpcgc300_axibus", "vcdecbus_src", 8), + JH7100_GATE(JH7100_CLK_GC300_AXI, "gc300_axi", "jpcgc300_axibus", 0), + JH7100_GATE(JH7100_CLK_JPCGC300_MAIN, "jpcgc300_mainclk", "jpcgc300_axibus", 0), + JH7100__DIV(JH7100_CLK_VENC_BUS, "venc_bus", "vcdecbus_src", 8), + JH7100_GATE(JH7100_CLK_VENC_AXI, "venc_axi", "venc_bus", 0), + JH7100_GATE(JH7100_CLK_VENCBRG_MAIN, "vencbrg_mainclk", "venc_bus", 0), + JH7100_GDIV(JH7100_CLK_VENC_BCLK, "venc_bclk", "vcdecbus_src", 8, 0), + JH7100_GDIV(JH7100_CLK_VENC_CCLK, "venc_cclk", "cdec_root", 8, 0), + JH7100_GATE(JH7100_CLK_VENC_APB, "venc_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_DDRPLL_DIV2, "ddrpll_div2", "pll1_out", 2, CLK_IGNORE_UNUSED), + JH7100_GDIV(JH7100_CLK_DDRPLL_DIV4, "ddrpll_div4", "ddrpll_div2", 2, CLK_IGNORE_UNUSED), + JH7100_GDIV(JH7100_CLK_DDRPLL_DIV8, "ddrpll_div8", "ddrpll_div4", 2, CLK_IGNORE_UNUSED), + JH7100_GDIV(JH7100_CLK_DDROSC_DIV2, "ddrosc_div2", "osc_sys", 2, CLK_IGNORE_UNUSED), + JH7100_GMUX(JH7100_CLK_DDRC0, "ddrc0", ddrc0_sels, CLK_IGNORE_UNUSED), + JH7100_GMUX(JH7100_CLK_DDRC1, "ddrc1", ddrc1_sels, CLK_IGNORE_UNUSED), + JH7100_GATE(JH7100_CLK_DDRPHY_APB, "ddrphy_apb", "apb1_bus", CLK_IGNORE_UNUSED), + JH7100__DIV(JH7100_CLK_NOC_ROB, "noc_rob", "cpunbus_root_div", 8), + JH7100__DIV(JH7100_CLK_NOC_COG, "noc_cog", "dla_root", 8), + JH7100_GATE(JH7100_CLK_NNE_AHB, "nne_ahb", "ahb_bus", 0), + JH7100__DIV(JH7100_CLK_NNEBUS_SRC1, "nnebus_src1", "dsp_root", 4), + JH7100__MUX(JH7100_CLK_NNE_BUS, "nne_bus", nne_bus_sels), + JH7100_GATE(JH7100_CLK_NNE_AXI, "nne_axi", "nne_bus", 0), + JH7100_GATE(JH7100_CLK_NNENOC_AXI, "nnenoc_axi", "nne_bus", 0), + JH7100_GATE(JH7100_CLK_DLASLV_AXI, "dlaslv_axi", "nne_bus", 0), + JH7100_GATE(JH7100_CLK_DSPX2C_AXI, "dspx2c_axi", "nne_bus", CLK_IGNORE_UNUSED), + JH7100__DIV(JH7100_CLK_HIFI4_SRC, "hifi4_src", "cdechifi4_root", 4), + JH7100__DIV(JH7100_CLK_HIFI4_COREFREE, "hifi4_corefree", "hifi4_src", 8), + JH7100_GATE(JH7100_CLK_HIFI4_CORE, "hifi4_core", "hifi4_corefree", 0), + JH7100__DIV(JH7100_CLK_HIFI4_BUS, "hifi4_bus", "hifi4_corefree", 8), + JH7100_GATE(JH7100_CLK_HIFI4_AXI, "hifi4_axi", "hifi4_bus", 0), + JH7100_GATE(JH7100_CLK_HIFI4NOC_AXI, "hifi4noc_axi", "hifi4_bus", 0), + JH7100__DIV(JH7100_CLK_SGDMA1P_BUS, "sgdma1p_bus", "cpunbus_root_div", 8), + JH7100_GATE(JH7100_CLK_SGDMA1P_AXI, "sgdma1p_axi", "sgdma1p_bus", 0), + JH7100_GATE(JH7100_CLK_DMA1P_AXI, "dma1p_axi", "sgdma1p_bus", 0), + JH7100_GDIV(JH7100_CLK_X2C_AXI, "x2c_axi", "cpunbus_root_div", 8, CLK_IGNORE_UNUSED), + JH7100__DIV(JH7100_CLK_USB_BUS, "usb_bus", "cpunbus_root_div", 8), + JH7100_GATE(JH7100_CLK_USB_AXI, "usb_axi", "usb_bus", 0), + JH7100_GATE(JH7100_CLK_USBNOC_AXI, "usbnoc_axi", "usb_bus", 0), + JH7100__DIV(JH7100_CLK_USBPHY_ROOTDIV, "usbphy_rootdiv", "gmacusb_root", 4), + JH7100_GDIV(JH7100_CLK_USBPHY_125M, "usbphy_125m", "usbphy_rootdiv", 8, 0), + JH7100_GDIV(JH7100_CLK_USBPHY_PLLDIV25M, "usbphy_plldiv25m", "usbphy_rootdiv", 32, 0), + JH7100__MUX(JH7100_CLK_USBPHY_25M, "usbphy_25m", usbphy_25m_sels), + JH7100__DIV(JH7100_CLK_AUDIO_DIV, "audio_div", "audio_root", 131072), + JH7100_GATE(JH7100_CLK_AUDIO_SRC, "audio_src", "audio_div", 0), + JH7100_GATE(JH7100_CLK_AUDIO_12288, "audio_12288", "osc_aud", 0), + JH7100_GDIV(JH7100_CLK_VIN_SRC, "vin_src", "vin_root", 4, 0), + JH7100__DIV(JH7100_CLK_ISP0_BUS, "isp0_bus", "vin_src", 8), + JH7100_GATE(JH7100_CLK_ISP0_AXI, "isp0_axi", "isp0_bus", 0), + JH7100_GATE(JH7100_CLK_ISP0NOC_AXI, "isp0noc_axi", "isp0_bus", 0), + JH7100_GATE(JH7100_CLK_ISPSLV_AXI, "ispslv_axi", "isp0_bus", 0), + JH7100__DIV(JH7100_CLK_ISP1_BUS, "isp1_bus", "vin_src", 8), + JH7100_GATE(JH7100_CLK_ISP1_AXI, "isp1_axi", "isp1_bus", 0), + JH7100_GATE(JH7100_CLK_ISP1NOC_AXI, "isp1noc_axi", "isp1_bus", 0), + JH7100__DIV(JH7100_CLK_VIN_BUS, "vin_bus", "vin_src", 8), + JH7100_GATE(JH7100_CLK_VIN_AXI, "vin_axi", "vin_bus", 0), + JH7100_GATE(JH7100_CLK_VINNOC_AXI, "vinnoc_axi", "vin_bus", 0), + JH7100_GDIV(JH7100_CLK_VOUT_SRC, "vout_src", "vout_root", 4, 0), + JH7100__DIV(JH7100_CLK_DISPBUS_SRC, "dispbus_src", "voutbus_root", 4), + JH7100__DIV(JH7100_CLK_DISP_BUS, "disp_bus", "dispbus_src", 4), + JH7100_GATE(JH7100_CLK_DISP_AXI, "disp_axi", "disp_bus", 0), + JH7100_GATE(JH7100_CLK_DISPNOC_AXI, "dispnoc_axi", "disp_bus", 0), + JH7100_GATE(JH7100_CLK_SDIO0_AHB, "sdio0_ahb", "ahb_bus", 0), + JH7100_GDIV(JH7100_CLK_SDIO0_CCLKINT, "sdio0_cclkint", "perh0_src", 24, 0), + JH7100__INV(JH7100_CLK_SDIO0_CCLKINT_INV, "sdio0_cclkint_inv", "sdio0_cclkint"), + JH7100_GATE(JH7100_CLK_SDIO1_AHB, "sdio1_ahb", "ahb_bus", 0), + JH7100_GDIV(JH7100_CLK_SDIO1_CCLKINT, "sdio1_cclkint", "perh1_src", 24, 0), + JH7100__INV(JH7100_CLK_SDIO1_CCLKINT_INV, "sdio1_cclkint_inv", "sdio1_cclkint"), + JH7100_GATE(JH7100_CLK_GMAC_AHB, "gmac_ahb", "ahb_bus", 0), + JH7100__DIV(JH7100_CLK_GMAC_ROOT_DIV, "gmac_root_div", "gmacusb_root", 8), + JH7100_GDIV(JH7100_CLK_GMAC_PTP_REF, "gmac_ptp_refclk", "gmac_root_div", 31, 0), + JH7100_GDIV(JH7100_CLK_GMAC_GTX, "gmac_gtxclk", "gmac_root_div", 255, 0), + JH7100_GDIV(JH7100_CLK_GMAC_RMII_TX, "gmac_rmii_txclk", "gmac_rmii_ref", 8, 0), + JH7100_GDIV(JH7100_CLK_GMAC_RMII_RX, "gmac_rmii_rxclk", "gmac_rmii_ref", 8, 0), + JH7100__MUX(JH7100_CLK_GMAC_TX, "gmac_tx", gmac_tx_sels), + JH7100__INV(JH7100_CLK_GMAC_TX_INV, "gmac_tx_inv", "gmac_tx"), + JH7100__MUX(JH7100_CLK_GMAC_RX_PRE, "gmac_rx_pre", gmac_rx_pre_sels), + JH7100__INV(JH7100_CLK_GMAC_RX_INV, "gmac_rx_inv", "gmac_rx_pre"), + JH7100_GATE(JH7100_CLK_GMAC_RMII, "gmac_rmii", "gmac_rmii_ref", 0), + JH7100_GDIV(JH7100_CLK_GMAC_TOPHYREF, "gmac_tophyref", "gmac_root_div", 127, 0), + JH7100_GATE(JH7100_CLK_SPI2AHB_AHB, "spi2ahb_ahb", "ahb_bus", 0), + JH7100_GDIV(JH7100_CLK_SPI2AHB_CORE, "spi2ahb_core", "perh0_src", 31, 0), + JH7100_GATE(JH7100_CLK_EZMASTER_AHB, "ezmaster_ahb", "ahb_bus", 0), + JH7100_GATE(JH7100_CLK_E24_AHB, "e24_ahb", "ahb_bus", 0), + JH7100_GATE(JH7100_CLK_E24RTC_TOGGLE, "e24rtc_toggle", "osc_sys", 0), + JH7100_GATE(JH7100_CLK_QSPI_AHB, "qspi_ahb", "ahb_bus", 0), + JH7100_GATE(JH7100_CLK_QSPI_APB, "qspi_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_QSPI_REF, "qspi_refclk", "perh0_src", 31, 0), + JH7100_GATE(JH7100_CLK_SEC_AHB, "sec_ahb", "ahb_bus", 0), + JH7100_GATE(JH7100_CLK_AES, "aes_clk", "sec_ahb", 0), + JH7100_GATE(JH7100_CLK_SHA, "sha_clk", "sec_ahb", 0), + JH7100_GATE(JH7100_CLK_PKA, "pka_clk", "sec_ahb", 0), + JH7100_GATE(JH7100_CLK_TRNG_APB, "trng_apb", "apb1_bus", 0), + JH7100_GATE(JH7100_CLK_OTP_APB, "otp_apb", "apb1_bus", 0), + JH7100_GATE(JH7100_CLK_UART0_APB, "uart0_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_UART0_CORE, "uart0_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_UART1_APB, "uart1_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_UART1_CORE, "uart1_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_SPI0_APB, "spi0_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_SPI0_CORE, "spi0_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_SPI1_APB, "spi1_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_SPI1_CORE, "spi1_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_I2C0_APB, "i2c0_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_I2C0_CORE, "i2c0_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_I2C1_APB, "i2c1_apb", "apb1_bus", 0), + JH7100_GDIV(JH7100_CLK_I2C1_CORE, "i2c1_core", "perh1_src", 63, 0), + JH7100_GATE(JH7100_CLK_GPIO_APB, "gpio_apb", "apb1_bus", 0), + JH7100_GATE(JH7100_CLK_UART2_APB, "uart2_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_UART2_CORE, "uart2_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_UART3_APB, "uart3_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_UART3_CORE, "uart3_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_SPI2_APB, "spi2_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_SPI2_CORE, "spi2_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_SPI3_APB, "spi3_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_SPI3_CORE, "spi3_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_I2C2_APB, "i2c2_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_I2C2_CORE, "i2c2_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_I2C3_APB, "i2c3_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_I2C3_CORE, "i2c3_core", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_WDTIMER_APB, "wdtimer_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_WDT_CORE, "wdt_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER0_CORE, "timer0_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER1_CORE, "timer1_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER2_CORE, "timer2_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER3_CORE, "timer3_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER4_CORE, "timer4_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER5_CORE, "timer5_coreclk", "perh0_src", 63, 0), + JH7100_GDIV(JH7100_CLK_TIMER6_CORE, "timer6_coreclk", "perh0_src", 63, 0), + JH7100_GATE(JH7100_CLK_VP6INTC_APB, "vp6intc_apb", "apb2_bus", 0), + JH7100_GATE(JH7100_CLK_PWM_APB, "pwm_apb", "apb2_bus", 0), + JH7100_GATE(JH7100_CLK_MSI_APB, "msi_apb", "apb2_bus", 0), + JH7100_GATE(JH7100_CLK_TEMP_APB, "temp_apb", "apb2_bus", 0), + JH7100_GDIV(JH7100_CLK_TEMP_SENSE, "temp_sense", "osc_sys", 31, 0), + JH7100_GATE(JH7100_CLK_SYSERR_APB, "syserr_apb", "apb2_bus", 0), +}; + +static struct clk_hw *clk_starfive_jh7100_get(struct of_phandle_args *clkspec, void *data) +{ + struct clk_starfive_jh7100_priv *priv = data; + unsigned int idx = clkspec->args[0]; + + if (idx >= JH7100_CLK_END) { + dev_err(priv->dev, "invalid clock index %u\n", idx); + return ERR_PTR(-EINVAL); + } + + if (idx >= JH7100_CLK_PLL0_OUT) + return priv->pll[idx - JH7100_CLK_PLL0_OUT]; + + return &priv->reg[idx].hw; +} + +static int __init clk_starfive_jh7100_probe(struct platform_device *pdev) +{ + struct clk_starfive_jh7100_priv *priv; + unsigned int idx; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + spin_lock_init(&priv->rmw_lock); + priv->dev = &pdev->dev; + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + priv->pll[0] = devm_clk_hw_register_fixed_factor(priv->dev, "pll0_out", + "osc_sys", 0, 40, 1); + if (IS_ERR(priv->pll[0])) + return PTR_ERR(priv->pll[0]); + + priv->pll[1] = devm_clk_hw_register_fixed_factor(priv->dev, "pll1_out", + "osc_sys", 0, 64, 1); + if (IS_ERR(priv->pll[1])) + return PTR_ERR(priv->pll[1]); + + priv->pll[2] = devm_clk_hw_register_fixed_factor(priv->dev, "pll2_out", + "pll2_refclk", 0, 55, 1); + if (IS_ERR(priv->pll[2])) + return PTR_ERR(priv->pll[2]); + + for (idx = 0; idx < JH7100_CLK_PLL0_OUT; idx++) { + u32 max_parent = (jh7100_clk_data[idx].max & JH7100_CLK_MUX_MASK) >> + JH7100_CLK_MUX_SHIFT; + struct clk_init_data init = { + .name = jh7100_clk_data[idx].name, + .ops = jh7100_clk_data[idx].ops, + .num_parents = max_parent + 1, + .flags = jh7100_clk_data[idx].flags, + }; + struct jh7100_clk *clk = &priv->reg[idx]; + + if (init.num_parents > 1) + init.parent_names = jh7100_clk_data[idx].parents; + else + init.parent_names = &jh7100_clk_data[idx].parent; + + clk->hw.init = &init; + clk->idx = idx; + clk->max = jh7100_clk_data[idx].max; + + ret = clk_hw_register(priv->dev, &clk->hw); + if (ret) + goto err; + } + + ret = devm_of_clk_add_hw_provider(priv->dev, clk_starfive_jh7100_get, priv); + if (ret) + goto err; + + return 0; +err: + while (idx) + clk_hw_unregister(&priv->reg[--idx].hw); + return ret; +} + +static const struct of_device_id clk_starfive_jh7100_match[] = { + { .compatible = "starfive,jh7100-clkgen" }, + { /* sentinel */ } +}; + +static struct platform_driver clk_starfive_jh7100_driver = { + .probe = clk_starfive_jh7100_probe, + .driver = { + .name = "clk-starfive-jh7100", + .of_match_table = clk_starfive_jh7100_match, + }, +}; +builtin_platform_driver(clk_starfive_jh7100_driver); + +MODULE_DESCRIPTION("StarFive JH7100 Clock Generator Driver"); +MODULE_AUTHOR("Emil Renner Berthing "); +MODULE_AUTHOR("Geert Uytterhoeven "); +MODULE_LICENSE("GPL v2");