[PATCH v3 20/22] clk: starfive: Add StarFive JHB100 Peripheral-3 clock driver
From: Changhuang Liang <changhuang.liang@starfivetech.com>
Date: 2026-08-07 11:31:16
Also in:
linux-clk, linux-devicetree, linux-hardening, linux-riscv, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
Add driver for the StarFive JHB100 Peripheral-3 clock controller. Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> --- drivers/clk/starfive/Kconfig | 11 ++ drivers/clk/starfive/Makefile | 1 + .../clk/starfive/clk-starfive-jhb100-per3.c | 132 ++++++++++++++++++ 3 files changed, 144 insertions(+) create mode 100644 drivers/clk/starfive/clk-starfive-jhb100-per3.c
diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
index 89dadff766fc..852464949334 100644
--- a/drivers/clk/starfive/Kconfig
+++ b/drivers/clk/starfive/Kconfig@@ -106,6 +106,17 @@ config CLK_STARFIVE_JHB100_PER2 Say yes here to support the peripheral-2 clock controller on the StarFive JHB100 SoC. +config CLK_STARFIVE_JHB100_PER3 + bool "StarFive JHB100 peripheral-3 clock support" + depends on ARCH_STARFIVE || COMPILE_TEST + select AUXILIARY_BUS + select CLK_STARFIVE_COMMON + select RESET_STARFIVE_JHB100 if RESET_CONTROLLER + default ARCH_STARFIVE + help + Say yes here to support the peripheral-3 clock controller + on the StarFive JHB100 SoC. + config CLK_STARFIVE_JHB100_SYS0 bool "StarFive JHB100 system-0 clock support" depends on ARCH_STARFIVE || COMPILE_TEST
diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile
index 044e1942ccfa..f00690f0cdad 100644
--- a/drivers/clk/starfive/Makefile
+++ b/drivers/clk/starfive/Makefile@@ -14,6 +14,7 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT) += clk-starfive-jh7110-vout.o obj-$(CONFIG_CLK_STARFIVE_JHB100_PER0) += clk-starfive-jhb100-per0.o obj-$(CONFIG_CLK_STARFIVE_JHB100_PER1) += clk-starfive-jhb100-per1.o obj-$(CONFIG_CLK_STARFIVE_JHB100_PER2) += clk-starfive-jhb100-per2.o +obj-$(CONFIG_CLK_STARFIVE_JHB100_PER3) += clk-starfive-jhb100-per3.o obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS0) += clk-starfive-jhb100-sys0.o obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS1) += clk-starfive-jhb100-sys1.o obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS2) += clk-starfive-jhb100-sys2.o
diff --git a/drivers/clk/starfive/clk-starfive-jhb100-per3.c b/drivers/clk/starfive/clk-starfive-jhb100-per3.c
new file mode 100644
index 000000000000..6703201604fb
--- /dev/null
+++ b/drivers/clk/starfive/clk-starfive-jhb100-per3.c@@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * StarFive JHB100 Peripheral-3 Clock Driver + * + * Copyright (C) 2024 StarFive Technology Co., Ltd. + * + * Author: Changhuang Liang <changhuang.liang@starfivetech.com> + * + */ + +#include <dt-bindings/clock/starfive,jhb100-crg.h> +#include <linux/platform_device.h> + +#include "clk-starfive-common.h" + +#define JHB100_PER3CLK_NUM_CLKS (JHB100_PER3CLK_MAIN_ICG_EN_GMAC1 + 1) + +/* external clocks */ +#define JHB100_PER3CLK_NCNOC_INIT (JHB100_PER3CLK_NUM_CLKS + 0) +#define JHB100_PER3CLK_NCNOC_TARG (JHB100_PER3CLK_NUM_CLKS + 1) +#define JHB100_PER3CLK_CFG_125 (JHB100_PER3CLK_NUM_CLKS + 2) +#define JHB100_PER3CLK_GMAC0_RMII_RCLKI (JHB100_PER3CLK_NUM_CLKS + 3) +#define JHB100_PER3CLK_GMAC1_SGMII_TX (JHB100_PER3CLK_NUM_CLKS + 4) +#define JHB100_PER3CLK_GMAC1_SGMII_RX (JHB100_PER3CLK_NUM_CLKS + 5) +#define JHB100_PER3CLK_OSC (JHB100_PER3CLK_NUM_CLKS + 6) + +static const char * const jhb100_per3_ext_clk[] = { + "ncnoc_init", + "ncnoc_targ", + "cfg_125", + "gmac0_rmii_rclki", + "gmac1_sgmii_tx", + "gmac1_sgmii_rx", + "osc", +}; + +static const struct starfive_clk_data jhb100_per3crg_clk_data[] = { + STARFIVE__DIV(JHB100_PER3CLK_300, "per3_300", 256, + JHB100_PER3CLK_NCNOC_INIT), + STARFIVE__DIV(JHB100_PER3CLK_200, "per3_200", 256, + JHB100_PER3CLK_NCNOC_INIT), + STARFIVE__DIV(JHB100_PER3CLK_GMAC1_PTP_REF, "gmac1_ptp_ref", 2, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE__MUX(JHB100_PER3CLK_GMAC1_TX_125_MUX, "gmac1_tx_125_mux", 0, 2, + JHB100_PER3CLK_GMAC1_SGMII_TX, + JHB100_PER3CLK_CFG_125), + STARFIVE__DIV(JHB100_PER3CLK_GMAC1_TX, "gmac1_tx", 50, + JHB100_PER3CLK_GMAC1_TX_125_MUX), + STARFIVE__MUX(JHB100_PER3CLK_GMAC1_RX_125_MUX, "gmac1_rx_125_mux", 0, 2, + JHB100_PER3CLK_GMAC1_SGMII_RX, + JHB100_PER3CLK_CFG_125), + STARFIVE__DIV(JHB100_PER3CLK_GMAC1_RX, "gmac1_rx", 50, + JHB100_PER3CLK_GMAC1_RX_125_MUX), + STARFIVE__DIV(JHB100_PER3CLK_GMAC0_PTP_REF, "gmac0_ptp_ref", 2, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE__DIV(JHB100_PER3CLK_GMAC0_RMII_PLL, "gmac0_rmii_pll", 2, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE__MUX(JHB100_PER3CLK_GMAC0_RMII_MUX, "gmac0_rmii_mux", 0, 2, + JHB100_PER3CLK_GMAC0_RMII_PLL, + JHB100_PER3CLK_GMAC0_RMII_RCLKI), + STARFIVE__DIV(JHB100_PER3CLK_GMAC0_RMII_MUX_DIV2, "gmac0_rmii_mux_div2", 20, + JHB100_PER3CLK_GMAC0_RMII_MUX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_CLK_TX_I, "ether0_rmii_clk_tx_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC0_RMII_MUX_DIV2), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_CLK_RX_I, "ether0_rmii_clk_rx_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC0_RMII_MUX_DIV2), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_CLK_PTP_REF_I, "ether0_rmii_clk_ptp_ref_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC0_PTP_REF), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_CLK_RMII_I, "ether0_rmii_clk_rmii_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC0_RMII_MUX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_CLK_CSR_I, "ether0_rmii_clk_csr_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_RMII_ACLK_I, "ether0_rmii_aclk_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_300), + STARFIVE_GATE(JHB100_PER3CLK_GMAC0_RMII_RCLKO, "gmac0_rmii_rclko", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC0_RMII_PLL), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_TX_I, "ether0_sgmii_clk_tx_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC1_TX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_RX_I, "ether0_sgmii_clk_rx_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC1_RX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_TX_125_I, "ether0_sgmii_clk_tx_125_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC1_TX_125_MUX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_RX_125_I, "ether0_sgmii_clk_rx_125_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC1_RX_125_MUX), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_PTP_REF_I, "ether0_sgmii_clk_ptp_ref_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_GMAC1_PTP_REF), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_REF_25_I, "ether0_sgmii_clk_ref_25_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_OSC), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_CLK_CSR_I, "ether0_sgmii_clk_csr_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_ACLK_I, "ether0_sgmii_aclk_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_300), + STARFIVE_GATE(JHB100_PER3CLK_ETHER0_SGMII_PHY_PCLK_I, "ether0_sgmii_phy_pclk_i", + CLK_IGNORE_UNUSED, JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_MAIN_ICG_EN_SENSORS_PERIPH3, "main_icg_en_sensors_periph3", 0, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_MAIN_ICG_EN_PECI0, "main_icg_en_peci0", 0, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_MAIN_ICG_EN_PECI1, "main_icg_en_peci1", 0, + JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_MAIN_ICG_EN_GMAC0, "main_icg_en_gmac0", + CLK_IS_CRITICAL, JHB100_PER3CLK_NCNOC_TARG), + STARFIVE_GATE(JHB100_PER3CLK_MAIN_ICG_EN_GMAC1, "main_icg_en_gmac1", + CLK_IS_CRITICAL, JHB100_PER3CLK_NCNOC_TARG), +}; + +static const struct starfive_crg_domain_info jhb100_per3crg_info = { + .clk_data = jhb100_per3crg_clk_data, + .num_clk = ARRAY_SIZE(jhb100_per3crg_clk_data), + .ext_clk = jhb100_per3_ext_clk, + .num_ext_clk = ARRAY_SIZE(jhb100_per3_ext_clk), + .rst_name = "jhb100-r-per3", + .power_domain = false, +}; + +static const struct of_device_id jhb100_per3crg_match[] = { + { + .compatible = "starfive,jhb100-per3crg", + .data = &jhb100_per3crg_info, + }, + { /* sentinel */ } +}; + +static struct platform_driver jhb100_per3crg_driver = { + .probe = starfive_crg_probe, + .driver = { + .name = "clk-starfive-jhb100-per3", + .of_match_table = jhb100_per3crg_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver(jhb100_per3crg_driver);
--
2.25.1