[PATCH v5 18/23] clk: starfive: Add StarFive JHB100 Peripheral-2 clock driver
flat view
COLD16d
From: Changhuang Liang <changhuang.liang@starfivetech.com>
Date: 2026-09-30 12:44:27
Also in:
linux-clk, linux-devicetree, linux-hardening, linux-riscv, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Stephen Boyd, Brian Masney, Jerome Brunet, Linus Torvalds
Revision v5 of 5 in this series.
Revisions (5)
Add driver for the StarFive JHB100 Peripheral-2 clock controller. Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> --- drivers/clk/starfive/Kconfig | 10 + drivers/clk/starfive/Makefile | 1 + .../clk/starfive/clk-starfive-jhb100-per2.c | 174 ++++++++++++++++++ 3 files changed, 185 insertions(+) create mode 100644 drivers/clk/starfive/clk-starfive-jhb100-per2.c
diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
index 62727ce3aef3..57a3838475e9 100644
--- a/drivers/clk/starfive/Kconfig
+++ b/drivers/clk/starfive/Kconfig@@ -93,6 +93,16 @@ config CLK_STARFIVE_JHB100_PER1 Say yes here to support the peripheral-1 clock controller on the StarFive JHB100 SoC. +config CLK_STARFIVE_JHB100_PER2 + bool "StarFive JHB100 peripheral-2 clock support" + depends on ARCH_STARFIVE || COMPILE_TEST + select CLK_STARFIVE_JH71X0 + select RESET_STARFIVE_JHB100 if RESET_CONTROLLER + default ARCH_STARFIVE + help + Say yes here to support the peripheral-2 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 279e0cdfc99b..ca9347d38023 100644
--- a/drivers/clk/starfive/Makefile
+++ b/drivers/clk/starfive/Makefile@@ -13,6 +13,7 @@ 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-$(CONFIG_CLK_STARFIVE_JHB100_SYS0) += clk-starfive-jhb100-sys0.o obj-$(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-per2.c b/drivers/clk/starfive/clk-starfive-jhb100-per2.c
new file mode 100644
index 000000000000..7c4af95a3fc9
--- /dev/null
+++ b/drivers/clk/starfive/clk-starfive-jhb100-per2.c@@ -0,0 +1,174 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * StarFive JHB100 Peripheral-2 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-jh71x0.h" + +#define JHB100_PER2CLK_NUM_CLKS (JHB100_PER2CLK_MAIN_ICG_EN_GMAC3 + 1) + +/* external clocks */ +#define JHB100_PER2CLK_NCNOC_INIT (JHB100_PER2CLK_NUM_CLKS + 0) +#define JHB100_PER2CLK_CFG_400 (JHB100_PER2CLK_NUM_CLKS + 1) +#define JHB100_PER2CLK_CFG_125 (JHB100_PER2CLK_NUM_CLKS + 2) +#define JHB100_PER2CLK_GMAC2_RGMII_RX (JHB100_PER2CLK_NUM_CLKS + 3) +#define JHB100_PER2CLK_GMAC2_RMII_REF (JHB100_PER2CLK_NUM_CLKS + 4) +#define JHB100_PER2CLK_GMAC3_SGMII_TX (JHB100_PER2CLK_NUM_CLKS + 5) +#define JHB100_PER2CLK_GMAC3_SGMII_RX (JHB100_PER2CLK_NUM_CLKS + 6) +#define JHB100_PER2CLK_OSC (JHB100_PER2CLK_NUM_CLKS + 7) + +static const char * const jhb100_per2_ext_clk[] = { + "ncnoc_init", + "cfg_400", + "cfg_125", + "gmac2_rgmii_rx", + "gmac2_rmii_ref", + "gmac3_sgmii_tx", + "gmac3_sgmii_rx", + "osc", +}; + +static const struct jh71x0_clk_data jhb100_per2crg_clk_data[] = { + JH71X0__DIV(JHB100_PER2CLK_300, "per2_300", 2, + JHB100_PER2CLK_NCNOC_INIT), + JH71X0__DIV(JHB100_PER2CLK_100, "per2_100", 4, + JHB100_PER2CLK_CFG_400), + JH71X0__DIV(JHB100_PER2CLK_50, "per2_50", 2, + JHB100_PER2CLK_100), + JH71X0__DIV(JHB100_PER2CLK_GMAC2_RMII_50, "gmac2_rmii_50", 2, + JHB100_PER2CLK_100), + JH71X0__DIV(JHB100_PER2CLK_CAN0_CORE_DIV, "can0_core_div", 20, + JHB100_PER2CLK_CFG_400), + JH71X0__DIV(JHB100_PER2CLK_CAN1_CORE_DIV, "can1_core_div", 20, + JHB100_PER2CLK_CFG_400), + JH71X0__DIV(JHB100_PER2CLK_CAN0_TIMER, "can0_timer", 100, + JHB100_PER2CLK_100), + JH71X0__DIV(JHB100_PER2CLK_CAN1_TIMER, "can1_timer", 100, + JHB100_PER2CLK_100), + JH71X0__DIV(JHB100_PER2CLK_RTC_CORE_DIV, "rtc_core_div", 763, + JHB100_PER2CLK_OSC), + JH71X0__MUX(JHB100_PER2CLK_GMAC2_RMII_MUX_DLY, "gmac2_rmii_mux_dly", 0, 2, + JHB100_PER2CLK_GMAC2_RMII_REF, + JHB100_PER2CLK_GMAC2_RMII_50), + JH71X0__DIV(JHB100_PER2CLK_GMAC2_RMII_DIV, "gmac2_rmii_div", 20, + JHB100_PER2CLK_GMAC2_RMII_MUX_DLY), + JH71X0__MUX(JHB100_PER2CLK_GMAC2_RGMII_125_MUX, "gmac2_rgmii_125_mux", 0, 2, + JHB100_PER2CLK_GMAC2_RGMII_RX, + JHB100_PER2CLK_CFG_125), + JH71X0__DIV(JHB100_PER2CLK_GMAC2_RGMII_DIV, "gmac2_rgmii_div", 50, + JHB100_PER2CLK_CFG_125), + JH71X0__MUX(JHB100_PER2CLK_GMAC2_TX_MUX, "gmac2_tx_mux", 0, 2, + JHB100_PER2CLK_GMAC2_RMII_DIV, + JHB100_PER2CLK_GMAC2_RGMII_DIV), + JH71X0__INV(JHB100_PER2CLK_GMAC2_TX_180_BUF, "gmac2_tx_180_buf", + JHB100_PER2CLK_GMAC2_TX_MUX), + JH71X0__MUX(JHB100_PER2CLK_GMAC2_RX_MUX_DLY, "gmac2_rx_mux_dly", 0, 2, + JHB100_PER2CLK_GMAC2_RMII_DIV, + JHB100_PER2CLK_GMAC2_RGMII_125_MUX), + JH71X0__INV(JHB100_PER2CLK_GMAC2_RX_180_BUF, "gmac2_rx_180_buf", + JHB100_PER2CLK_GMAC2_RX_MUX_DLY), + JH71X0__MUX(JHB100_PER2CLK_GMAC2_TXCK_MUX_DLY, "gmac2_txck_mux_dly", 0, 2, + JHB100_PER2CLK_GMAC2_RMII_50, + JHB100_PER2CLK_GMAC2_TX_MUX), + JH71X0__MUX(JHB100_PER2CLK_GMAC3_TX_125_MUX, "gmac3_tx_125_mux", 0, 2, + JHB100_PER2CLK_GMAC3_SGMII_TX, + JHB100_PER2CLK_CFG_125), + JH71X0__MUX(JHB100_PER2CLK_GMAC3_RX_125_MUX, "gmac3_rx_125_mux", 0, 2, + JHB100_PER2CLK_GMAC3_SGMII_RX, + JHB100_PER2CLK_CFG_125), + JH71X0__DIV(JHB100_PER2CLK_GMAC3_TX_DIV, "gmac3_tx_div", 50, + JHB100_PER2CLK_GMAC3_TX_125_MUX), + JH71X0__DIV(JHB100_PER2CLK_GMAC3_RX_DIV, "gmac3_rx_div", 50, + JHB100_PER2CLK_GMAC3_RX_125_MUX), + JH71X0_GATE(JHB100_PER2CLK_SENSORS_PERIPH2, "sensors_periph2", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_FAN_TACH_PCLK, "fan_tach_pclk", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_TX_I, "ether0_rmiiandrgmii_tx_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC2_TX_MUX), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_RX_I, "ether0_rmiiandrgmii_rx_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC2_RX_MUX_DLY), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_TX_180_I, "ether0_rmiiandrgmii_tx_180_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC2_TX_180_BUF), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_RX_180_I, "ether0_rmiiandrgmii_rx_180_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC2_RX_180_BUF), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_PTP_REF_I, "ether0_rmiiandrgmii_ptp_ref_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_50), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_RMII_I, "ether0_rmiiandrgmii_rmii_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC2_RMII_MUX_DLY), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_CSR_I, "ether0_rmiiandrgmii_csr_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_ETHER0_RMIIANDRGMII_ACLK_I, "ether0_rmiiandrgmii_aclk_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_300), + JH71X0_GATE(JHB100_PER2CLK_RMIIANDRGMII_IOMUX_GMAC2_TXCK, "rmiiandrgmii_iomux_gmac2_txck", + CLK_IS_CRITICAL, JHB100_PER2CLK_GMAC2_TXCK_MUX_DLY), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_TX_I, "ether1_sgmii_tx_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC3_TX_DIV), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_RX_I, "ether1_sgmii_rx_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC3_RX_DIV), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_TX_125_I, "ether1_sgmii_tx_125_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC3_TX_125_MUX), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_RX_125_I, "ether1_sgmii_rx_125_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_GMAC3_RX_125_MUX), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_PTP_REF_I, "ether1_sgmii_ptp_ref_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_50), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_CSR_I, "ether1_sgmii_csr_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_ACLK_I, "ether1_sgmii_aclk_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_300), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_PHY_PCLK_I, "ether1_sgmii_phy_pclk_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_ETHER1_SGMII_REF_25_I, "ether1_sgmii_ref_25_i", + CLK_IGNORE_UNUSED, JHB100_PER2CLK_OSC), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_CAN0, "main_icg_en_can0", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_CAN1, "main_icg_en_can1", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_DMAC_8CH, "main_icg_en_dmac_8ch", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_RTC_SCAN, "main_icg_en_rtc_scan", CLK_IS_CRITICAL, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_ADC0, "main_icg_en_adc0", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_ADC1, "main_icg_en_adc1", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_GMAC2, "main_icg_en_gmac2", 0, + JHB100_PER2CLK_100), + JH71X0_GATE(JHB100_PER2CLK_MAIN_ICG_EN_GMAC3, "main_icg_en_gmac3", 0, + JHB100_PER2CLK_100), +}; + +static const struct jh71x0_crg_domain_info jhb100_per2crg_info = { + .clk_data = jhb100_per2crg_clk_data, + .num_clk = ARRAY_SIZE(jhb100_per2crg_clk_data), + .ext_clk = jhb100_per2_ext_clk, + .num_ext_clk = ARRAY_SIZE(jhb100_per2_ext_clk), + .rst_name = "jhb100-r-per2", + .power_domain = false, +}; + +static const struct of_device_id jhb100_per2crg_match[] = { + { + .compatible = "starfive,jhb100-per2crg", + .data = &jhb100_per2crg_info, + }, + { /* sentinel */ } +}; + +static struct platform_driver jhb100_per2crg_driver = { + .probe = jh71x0_crg_probe, + .driver = { + .name = "clk-starfive-jhb100-per2", + .of_match_table = jhb100_per2crg_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver(jhb100_per2crg_driver);
--
2.25.1