From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from azure-sdnproxy.icoremail.net (azure-sdnproxy.icoremail.net [13.76.78.106]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 490843148B4; Fri, 3 Apr 2026 09:36:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.76.78.106 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775208986; cv=none; b=ArqPfCkgCa1xtYD5zjBCBYoj23ar0wA65Q3B648rg+HIJzM9NF1guao/Uv0REr9zHKKpj38z49GgNYFda2hNu6ahjl81/MJmFJaYtIy9piZ2M6u9CQDhb+G2zl/xhmSeZFqeOd2nY6CS6OtTkGGjeyJBY07SPHJPa5D5GMcysxg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775208986; c=relaxed/simple; bh=TGxbo+Em7R1XG30Bm7V/ZkilK4EO/e8vkx9f7PBg7Xs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=MQkC66G6nrdZc2EmyRtwzBjQvklio98nxYgY4IrZK9E857e+PvfqWrV5m5biSDsSLg7q2w2nkZjdgJspU9XMqiVa4p+EonsOJXUxu5dpzvcqQaSrd/T2gyXo4j4AgA1YWsOmsuJ2YHHFMKKY99SDteqnCcm0IZPVlNVI38XoIiY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com; spf=pass smtp.mailfrom=eswincomputing.com; arc=none smtp.client-ip=13.76.78.106 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=eswincomputing.com Received: from E0005152DT.eswin.cn (unknown [10.12.96.41]) by app1 (Coremail) with SMTP id TAJkCgDHXHENis9p24oOAA--.58218S2; Fri, 03 Apr 2026 17:36:15 +0800 (CST) From: dongxuyang@eswincomputing.com To: mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, p.zabel@pengutronix.de, huangyifeng@eswincomputing.com, dongxuyang@eswincomputing.com Cc: ningyu@eswincomputing.com, linmin@eswincomputing.com, pinkesh.vaghela@einfochips.com Subject: [PATCH 2/3] clk: eswin: Add eic7700 HSP clock driver Date: Fri, 3 Apr 2026 17:36:12 +0800 Message-Id: <20260403093612.725-1-dongxuyang@eswincomputing.com> X-Mailer: git-send-email 2.31.1.windows.1 In-Reply-To: <20260403093459.612-1-dongxuyang@eswincomputing.com> References: <20260403093459.612-1-dongxuyang@eswincomputing.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:TAJkCgDHXHENis9p24oOAA--.58218S2 X-Coremail-Antispam: 1UD129KBjvAXoW3KrWUAw4xuF48JFWfuw4rXwb_yoW8JF1fGo WxKF43ZFy8Kw18urZYkr1Sv3WrZrs7AFy3ZFn5CrnrCFyrAr45JryxGwnI9w13ta4YkrWk Arn7Jry3Za9IkFyfn29KB7ZKAUJUUUU8529EdanIXcx71UUUUU7v73VFW2AGmfu7bjvjm3 AaLaJ3UjIYCTnIWjp_UUUYK7AC8VAFwI0_Gr0_Xr1l1xkIjI8I6I8E6xAIw20EY4v20xva j40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2 x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8 Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26r xl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj 6xIIjxv20xvE14v26r1Y6r17McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr 0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E 8cxan2IY04v7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUtVW8ZwCY02Avz4vE-syl42 xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWU GwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI4 8JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4U MIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I 8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUOEfODUUUU X-CM-SenderInfo: pgrqw5xx1d0w46hv4xpqfrz1xxwl0woofrz/ From: Xuyang Dong Add driver for the ESWIN EIC7700 high-speed peripherals system clock controller and register an auxiliary device for system reset controller which is named as "hsp-reset". Signed-off-by: Xuyang Dong --- drivers/clk/eswin/Kconfig | 12 + drivers/clk/eswin/Makefile | 1 + drivers/clk/eswin/clk-eic7700-hsp.c | 339 ++++++++++++++++++++++++++++ 3 files changed, 352 insertions(+) create mode 100644 drivers/clk/eswin/clk-eic7700-hsp.c diff --git a/drivers/clk/eswin/Kconfig b/drivers/clk/eswin/Kconfig index 0406ec499ec9..e6cc2a407bac 100644 --- a/drivers/clk/eswin/Kconfig +++ b/drivers/clk/eswin/Kconfig @@ -13,3 +13,15 @@ config COMMON_CLK_EIC7700 SoC. The clock controller generates and supplies clocks to various peripherals within the SoC. Say yes here to support the clock controller on the EIC7700 SoC. + +config COMMON_CLK_EIC7700_HSP + tristate "EIC7700 HSP Clock Driver" + depends on ARCH_ESWIN || COMPILE_TEST + select AUXILIARY_BUS + select COMMON_CLK_EIC7700 + select RESET_EIC7700_HSP if RESET_CONTROLLER + help + This driver provides support for clock controller on ESWIN EIC7700 + HSP. The clock controller generates and supplies clocks to high + speed peripherals within the SoC. + Say yes here to support the clock controller on the EIC7700 HSP. diff --git a/drivers/clk/eswin/Makefile b/drivers/clk/eswin/Makefile index 4a7c2af82164..21a09a3396df 100644 --- a/drivers/clk/eswin/Makefile +++ b/drivers/clk/eswin/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_COMMON_CLK_ESWIN) += clk.o obj-$(CONFIG_COMMON_CLK_EIC7700) += clk-eic7700.o +obj-$(CONFIG_COMMON_CLK_EIC7700_HSP) += clk-eic7700-hsp.o diff --git a/drivers/clk/eswin/clk-eic7700-hsp.c b/drivers/clk/eswin/clk-eic7700-hsp.c new file mode 100644 index 000000000000..65ad9e762ee9 --- /dev/null +++ b/drivers/clk/eswin/clk-eic7700-hsp.c @@ -0,0 +1,339 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2026, Beijing ESWIN Computing Technology Co., Ltd.. + * All rights reserved. + * + * ESWIN EIC7700 HSP Clock Driver + * + * Authors: Xuyang Dong + */ + +#include +#include +#include +#include + +#include + +#include "common.h" + +#define EIC7700_HSP_SATA_REG 0x300 +#define EIC7700_HSP_MSHC0_REG 0x510 +#define EIC7700_HSP_MSHC1_REG 0x610 +#define EIC7700_HSP_MSHC2_REG 0x710 +#define EIC7700_HSP_USB0_REG 0x800 +#define EIC7700_HSP_USB0_REF_REG 0x83c +#define EIC7700_HSP_USB1_REG 0x900 +#define EIC7700_HSP_USB1_REF_REG 0x93c + +#define USB_REF_XTAL24M 0x2a +#define EIC7700_HSP_NR_CLKS (EIC7700_HSP_CLK_GATE_SATA + 1) + +struct eic7700_hsp_clk_gate { + struct clk_hw hw; + unsigned int id; + void __iomem *reg; + void __iomem *ref_reg; + const char *name; + const struct clk_parent_data *parent_data; + unsigned long flags; + unsigned long offset; + unsigned long ref_offset; + u8 bit_idx; + u8 gate_flags; + spinlock_t *lock; /* protect register read-modify-write cycle */ +}; + +static inline struct eic7700_hsp_clk_gate *to_gate_clk(struct clk_hw *hw) +{ + return container_of(hw, struct eic7700_hsp_clk_gate, hw); +} + +#define EIC7700_HSP_GATE(_id, _name, _pdata, _flags, _offset, _idx, \ + _ref_offset) \ + { \ + .id = _id, \ + .name = _name, \ + .parent_data = _pdata, \ + .flags = _flags, \ + .offset = _offset, \ + .ref_offset = _ref_offset, \ + .bit_idx = _idx, \ + } + +static void hsp_clk_gate_endisable(struct clk_hw *hw, int enable) +{ + struct eic7700_hsp_clk_gate *gate = to_gate_clk(hw); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(gate->lock, flags); + + reg = readl(gate->reg); + + if (enable) + reg |= BIT(gate->bit_idx); + else + reg &= ~BIT(gate->bit_idx); + + /* + * Hardware bug: The reference clock is 24MHz, but the reference clock + * register reset to an incorrect default value. + * Workaround: Rewrite the correct value before enabling/disabling + * the gate clock. + */ + writel(USB_REF_XTAL24M, gate->ref_reg); + writel(reg, gate->reg); + + spin_unlock_irqrestore(gate->lock, flags); +} + +static int hsp_clk_gate_enable(struct clk_hw *hw) +{ + hsp_clk_gate_endisable(hw, 1); + + return 0; +} + +static void hsp_clk_gate_disable(struct clk_hw *hw) +{ + hsp_clk_gate_endisable(hw, 0); +} + +static int hsp_clk_gate_is_enabled(struct clk_hw *hw) +{ + struct eic7700_hsp_clk_gate *gate = to_gate_clk(hw); + u32 reg; + + reg = readl(gate->reg); + + reg &= BIT(gate->bit_idx); + + return reg ? 1 : 0; +} + +static const struct clk_ops hsp_clk_gate_ops = { + .enable = hsp_clk_gate_enable, + .disable = hsp_clk_gate_disable, + .is_enabled = hsp_clk_gate_is_enabled, +}; + +static struct clk_hw * +hsp_clk_register_gate(struct device *dev, unsigned int id, const char *name, + const struct clk_parent_data *parent_data, + unsigned long flags, void __iomem *reg, + void __iomem *ref_reg, u8 bit_idx, u8 clk_gate_flags, + spinlock_t *lock) +{ + struct eic7700_hsp_clk_gate *gate; + struct clk_init_data init; + struct clk_hw *hw; + int ret; + + gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL); + if (!gate) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &hsp_clk_gate_ops; + init.flags = flags; + init.parent_data = parent_data; + init.num_parents = 1; + + gate->id = id; + gate->reg = reg; + gate->ref_reg = ref_reg; + gate->bit_idx = bit_idx; + gate->gate_flags = clk_gate_flags; + gate->lock = lock; + gate->hw.init = &init; + + hw = &gate->hw; + ret = devm_clk_hw_register(dev, hw); + if (ret) + hw = ERR_PTR(ret); + + return hw; +} + +static struct clk_parent_data hsp_cfg[] = { + { .fw_name = "hsp_cfg" } +}; + +static struct clk_parent_data hsp_mmc[] = { + { .fw_name = "hsp_mmc" } +}; + +static struct clk_parent_data hsp_usb_sata[] = { + { .fw_name = "hsp_sata" } +}; + +static struct eswin_fixed_factor_clock eic7700_hsp_factor_clks[] = { + ESWIN_FACTOR(EIC7700_HSP_CLK_FAC_CFG_DIV2, "factor_hsp_cfg_div2", + hsp_cfg, 1, 2, 0), + ESWIN_FACTOR(EIC7700_HSP_CLK_FAC_CFG_DIV4, "factor_hsp_cfg_div4", + hsp_cfg, 1, 4, 0), + ESWIN_FACTOR(EIC7700_HSP_CLK_FAC_MMC_DIV10, "factor_hsp_mmc_div10", + hsp_mmc, 1, 10, 0), +}; + +static struct eswin_gate_clock eic7700_hsp_gate_clks[] = { + ESWIN_GATE(EIC7700_HSP_CLK_GATE_SATA, "gate_clk_hsp_sata", hsp_usb_sata, + CLK_SET_RATE_PARENT, EIC7700_HSP_SATA_REG, 28, 0), + ESWIN_GATE(EIC7700_HSP_CLK_GATE_MSHC0_TMR, "gate_clk_hsp_mshc0_tmr", + hsp_mmc, CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC0_REG, 8, 0), + ESWIN_GATE(EIC7700_HSP_CLK_GATE_MSHC1_TMR, "gate_clk_hsp_mshc1_tmr", + hsp_mmc, CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC1_REG, 8, 0), + ESWIN_GATE(EIC7700_HSP_CLK_GATE_MSHC2_TMR, "gate_clk_hsp_mshc2_tmr", + hsp_mmc, CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC2_REG, 8, 0), +}; + +static struct eic7700_hsp_clk_gate eic7700_hsp_spec_gate_clks[] = { + EIC7700_HSP_GATE(EIC7700_HSP_CLK_GATE_USB0, "gate_clk_hsp_usb0", + hsp_usb_sata, CLK_SET_RATE_PARENT, + EIC7700_HSP_USB0_REG, 28, EIC7700_HSP_USB0_REF_REG), + EIC7700_HSP_GATE(EIC7700_HSP_CLK_GATE_USB1, "gate_clk_hsp_usb1", + hsp_usb_sata, CLK_SET_RATE_PARENT, + EIC7700_HSP_USB1_REG, 28, EIC7700_HSP_USB1_REF_REG), +}; + +static const struct clk_parent_data mux_mmc_3mux1_p[] = { + { .fw_name = "hsp_cfg" }, + { .hw = &eic7700_hsp_factor_clks[0].hw }, + { .hw = &eic7700_hsp_factor_clks[1].hw }, +}; + +static const struct clk_parent_data mux_mmc_2mux1_p[] = { + { .fw_name = "hsp_mmc" }, + { .hw = &eic7700_hsp_factor_clks[2].hw }, +}; + +static u32 mux_mmc_3mux1_tbl[] = { 0x0, 0x1, 0x3 }; + +static struct eswin_mux_clock eic7700_hsp_mux_clks[] = { + ESWIN_MUX_TBL(EIC7700_HSP_CLK_MUX_EMMC_3MUX1, "mux_hsp_emmc_3mux1", + mux_mmc_3mux1_p, ARRAY_SIZE(mux_mmc_3mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC0_REG, 16, 2, 0, + mux_mmc_3mux1_tbl), + ESWIN_MUX_TBL(EIC7700_HSP_CLK_MUX_SD0_3MUX1, "mux_hsp_sd0_3mux1", + mux_mmc_3mux1_p, ARRAY_SIZE(mux_mmc_3mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC1_REG, 16, 2, 0, + mux_mmc_3mux1_tbl), + ESWIN_MUX_TBL(EIC7700_HSP_CLK_MUX_SD1_3MUX1, "mux_hsp_sd1_3mux1", + mux_mmc_3mux1_p, ARRAY_SIZE(mux_mmc_3mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC2_REG, 16, 2, 0, + mux_mmc_3mux1_tbl), + ESWIN_MUX(EIC7700_HSP_CLK_MUX_EMMC_CQE_2MUX1, "mux_hsp_emmc_cqe_2mux1", + mux_mmc_2mux1_p, ARRAY_SIZE(mux_mmc_2mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC0_REG, 0, 1, 0), + ESWIN_MUX(EIC7700_HSP_CLK_MUX_SD0_CQE_2MUX1, "mux_hsp_sd0_cqe_2mux1", + mux_mmc_2mux1_p, ARRAY_SIZE(mux_mmc_2mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC1_REG, 0, 1, 0), + ESWIN_MUX(EIC7700_HSP_CLK_MUX_SD1_CQE_2MUX1, "mux_hsp_sd1_cqe_2mux1", + mux_mmc_2mux1_p, ARRAY_SIZE(mux_mmc_2mux1_p), + CLK_SET_RATE_PARENT, EIC7700_HSP_MSHC2_REG, 0, 1, 0), +}; + +static struct eswin_clk_info eic7700_hsp_clks[] = { + ESWIN_GATE_TYPE(EIC7700_HSP_CLK_GATE_EMMC, "gate_clk_hsp_emmc", + EIC7700_HSP_CLK_MUX_EMMC_3MUX1, + CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, + EIC7700_HSP_MSHC0_REG, 24, 0), + ESWIN_GATE_TYPE(EIC7700_HSP_CLK_GATE_SD0, "gate_clk_hsp_sd0", + EIC7700_HSP_CLK_MUX_SD0_3MUX1, + CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, + EIC7700_HSP_MSHC1_REG, 24, 0), + ESWIN_GATE_TYPE(EIC7700_HSP_CLK_GATE_SD1, "gate_clk_hsp_sd1", + EIC7700_HSP_CLK_MUX_SD1_3MUX1, + CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, + EIC7700_HSP_MSHC2_REG, 24, 0), +}; + +static int eic7700_hsp_clk_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct auxiliary_device *adev; + struct eswin_clock_data *data; + struct clk_hw *hw; + int i, ret; + + data = eswin_clk_init(pdev, EIC7700_HSP_NR_CLKS); + if (IS_ERR(data)) + return dev_err_probe(dev, PTR_ERR(data), + "failed to get clk data!\n"); + + ret = eswin_clk_register_fixed_factor + (dev, eic7700_hsp_factor_clks, + ARRAY_SIZE(eic7700_hsp_factor_clks), data); + if (ret) + return dev_err_probe(dev, ret, + "failed to register fixed factor clock\n"); + + ret = eswin_clk_register_gate(dev, eic7700_hsp_gate_clks, + ARRAY_SIZE(eic7700_hsp_gate_clks), data); + if (ret) + return dev_err_probe(dev, ret, + "failed to register gate clock\n"); + + ret = eswin_clk_register_mux(dev, eic7700_hsp_mux_clks, + ARRAY_SIZE(eic7700_hsp_mux_clks), + data); + if (ret) + return dev_err_probe(dev, ret, + "failed to register mux clock\n"); + + ret = eswin_clk_register_clks(dev, eic7700_hsp_clks, + ARRAY_SIZE(eic7700_hsp_clks), data); + if (ret) + return dev_err_probe(dev, ret, + "failed to register clock\n"); + + for (i = 0; i < ARRAY_SIZE(eic7700_hsp_spec_gate_clks); i++) { + struct eic7700_hsp_clk_gate *gate; + + gate = &eic7700_hsp_spec_gate_clks[i]; + hw = hsp_clk_register_gate(dev, gate->id, gate->name, + gate->parent_data, gate->flags, + data->base + gate->offset, + data->base + gate->ref_offset, + gate->bit_idx, 0, &data->lock); + if (IS_ERR(hw)) + return dev_err_probe(dev, PTR_ERR(hw), + "failed to register gate clock\n"); + + data->clk_data.hws[gate->id] = hw; + } + + ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + &data->clk_data); + if (ret) + return dev_err_probe(dev, ret, "add clk provider failed\n"); + + adev = devm_auxiliary_device_create(dev, "hsp-reset", + (__force void *)data->base); + if (!adev) + return dev_err_probe(dev, -ENODEV, + "register hsp-reset device failed\n"); + + return 0; +} + +static const struct of_device_id eic7700_hsp_clock_dt_ids[] = { + { .compatible = "eswin,eic7700-hspcrg", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, eic7700_hsp_clock_dt_ids); + +static struct platform_driver eic7700_hsp_clock_driver = { + .probe = eic7700_hsp_clk_probe, + .driver = { + .name = "eic7700-hsp-clock", + .of_match_table = eic7700_hsp_clock_dt_ids, + }, +}; + +module_platform_driver(eic7700_hsp_clock_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Xuyang Dong "); +MODULE_DESCRIPTION("ESWIN EIC7700 HSP clock controller driver"); -- 2.34.1