[PATCH v5 06/23] clk: starfive: Add JHB100 System-0 clock generator driver
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COOLING13d
SUPERSEDED
From: Changhuang Liang <changhuang.liang@starfivetech.com>
Date: 2026-09-30 12:44:07
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 6 in this series.
Revisions (6)
Add support for JHB100 System-0 clock generator (SYS0CRG). Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> --- MAINTAINERS | 7 + drivers/clk/starfive/Kconfig | 10 ++ drivers/clk/starfive/Makefile | 2 + .../clk/starfive/clk-starfive-jhb100-sys0.c | 150 ++++++++++++++++++ 4 files changed, 169 insertions(+) create mode 100644 drivers/clk/starfive/clk-starfive-jhb100-sys0.c
diff --git a/MAINTAINERS b/MAINTAINERS
index c9f542965ec5..d22078bcf488 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -26217,6 +26217,13 @@ F: Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml F: drivers/phy/starfive/phy-jh7110-pcie.c F: drivers/phy/starfive/phy-jh7110-usb.c +STARFIVE JHB100 CLOCK DRIVERS +M: Changhuang Liang <changhuang.liang@starfivetech.com> +S: Supported +F: Documentation/devicetree/bindings/clock/starfive,jhb1*.yaml +F: drivers/clk/starfive/clk-starfive-jhb1* +F: include/dt-bindings/clock/starfive,jhb1*.h + STARFIVE JHB100 DEVICETREES M: Changhuang Liang <changhuang.liang@starfivetech.com> L: linux-riscv@lists.infradead.org
diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
index 51716655554f..cd5b7754403e 100644
--- a/drivers/clk/starfive/Kconfig
+++ b/drivers/clk/starfive/Kconfig@@ -72,3 +72,13 @@ config CLK_STARFIVE_JH7110_VOUT help Say yes here to support the Video-Output clock controller on the StarFive JH7110 SoC. + +config CLK_STARFIVE_JHB100_SYS0 + bool "StarFive JHB100 system-0 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 system-0 clock controller on the + StarFive JHB100 SoC.
diff --git a/drivers/clk/starfive/Makefile b/drivers/clk/starfive/Makefile
index 199ac0f37a2f..d2ba83d7d02c 100644
--- a/drivers/clk/starfive/Makefile
+++ b/drivers/clk/starfive/Makefile@@ -10,3 +10,5 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_AON) += clk-starfive-jh7110-aon.o obj-$(CONFIG_CLK_STARFIVE_JH7110_STG) += clk-starfive-jh7110-stg.o obj-$(CONFIG_CLK_STARFIVE_JH7110_ISP) += clk-starfive-jh7110-isp.o obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT) += clk-starfive-jh7110-vout.o + +obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS0) += clk-starfive-jhb100-sys0.o
diff --git a/drivers/clk/starfive/clk-starfive-jhb100-sys0.c b/drivers/clk/starfive/clk-starfive-jhb100-sys0.c
new file mode 100644
index 000000000000..498afb787311
--- /dev/null
+++ b/drivers/clk/starfive/clk-starfive-jhb100-sys0.c@@ -0,0 +1,150 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * StarFive JHB100 System-0 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/init.h> +#include <linux/platform_device.h> + +#include "clk-starfive-jh71x0.h" + +#define JHB100_SYS0CLK_NUM_CLKS (JHB100_SYS0CLK_GPU1_NCNOC_INIT + 1) + +/* external clocks */ +#define JHB100_SYS0CLK_OSC (JHB100_SYS0CLK_NUM_CLKS + 0) +#define JHB100_SYS0CLK_PLL0 (JHB100_SYS0CLK_NUM_CLKS + 1) +#define JHB100_SYS0CLK_PLL1 (JHB100_SYS0CLK_NUM_CLKS + 2) +#define JHB100_SYS0CLK_PLL2 (JHB100_SYS0CLK_NUM_CLKS + 3) + +static const char * const jhb100_sys0_ext_clk[] = { + "osc", + "pll0", + "pll1", + "pll2", +}; + +static const struct jh71x0_clk_data jhb100_sys0crg_clk_data[] = { + /* bmcpcierp */ + JH71X0__DIV(JHB100_SYS0CLK_BMCPCIERP_NCNOC_MAIN, "bmcpcierp_ncnoc_main", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPCIERP_NCNOC_CFG, "bmcpcierp_ncnoc_cfg", 12, + JHB100_SYS0CLK_PLL1), + JH71X0__DIV(JHB100_SYS0CLK_PCIE_REF_CML, "pcie_ref_cml", 24, + JHB100_SYS0CLK_PLL0), + JH71X0_GATE(JHB100_SYS0CLK_BMCPCIERP_NCNOC_DATA_INIT, "bmcpcierp_ncnoc_data_init", + CLK_IS_CRITICAL, JHB100_SYS0CLK_BMCPCIERP_NCNOC_MAIN), + JH71X0_GATE(JHB100_SYS0CLK_BMCPCIERP_NCNOC_CFG_INIT, "bmcpcierp_ncnoc_cfg_init", + CLK_IS_CRITICAL, JHB100_SYS0CLK_BMCPCIERP_NCNOC_CFG), + JH71X0_GATE(JHB100_SYS0CLK_BMCPCIERP_NCNOC_TARG, "bmcpcierp_ncnoc_targ", + CLK_IS_CRITICAL, JHB100_SYS0CLK_BMCPCIERP_NCNOC_MAIN), + JH71X0_GATE(JHB100_SYS0CLK_BMCPCIERP_PCU, "bmcpcierp_pcu", + CLK_IS_CRITICAL, JHB100_SYS0CLK_OSC), + /* hostss0 */ + JH71X0__DIV(JHB100_SYS0CLK_HOSTSS0_NCNOC_CFG, "hostss0_ncnoc_cfg", 12, + JHB100_SYS0CLK_PLL1), + JH71X0__DIV(JHB100_SYS0CLK_HOSTSS0_NCNOC_DATA, "hostss0_ncnoc_data", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_HOSTSS0_PHY_SCAN_400, "hostss0_phy_scan_400", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_GPIO_ESPI0_EXT, "gpio_espi0_ext", 14, + JHB100_SYS0CLK_PLL2), + /* bmcusb */ + JH71X0__DIV(JHB100_SYS0CLK_BMCUSB_NCNOC_INIT, "bmcusb_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCUSB_NCNOC_TARG, "bmcusb_ncnoc_targ", 6, + JHB100_SYS0CLK_PLL1), + JH71X0__DIV(JHB100_SYS0CLK_BMCUSB_SCANCLK, "bmcusb_scanclk", 5, + JHB100_SYS0CLK_PLL0), + JH71X0_GATE(JHB100_SYS0CLK_BMCUSB_480M_SCANCLK, "bmcusb_480m_scanclk", + CLK_IS_CRITICAL, JHB100_SYS0CLK_BMCUSB_SCANCLK), + /* vce */ + JH71X0__DIV(JHB100_SYS0CLK_VCE_NCNOC_INIT, "vce_ncnoc_init", 10, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_VCE_NCNOC_TARG, "vce_ncnoc_targ", 12, + JHB100_SYS0CLK_PLL1), + /* bmcperiph2 */ + JH71X0__DIV(JHB100_SYS0CLK_BMCPER2_NCNOC_INIT, "bmcper2_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER2_NCNOC_TARG, "bmcper2_ncnoc_targ", 12, + JHB100_SYS0CLK_PLL1), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER2_CFG_400, "bmcper2_cfg_400", 8, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER2_CFG_125, "bmcper2_cfg_125", 10, + JHB100_SYS0CLK_PLL1), + /* hostss1 */ + JH71X0__DIV(JHB100_SYS0CLK_HOSTSS1_NCNOC_DATA, "hostss1_ncnoc_data", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_HOSTSS1_PHY_SCAN_400, "hostss1_phy_scan_400", 6, + JHB100_SYS0CLK_PLL0), + JH71X0_GATE(JHB100_SYS0CLK_HOSTSS1_PHY_SCAN_400_ICG_BUF, + "hostss1_phy_scan_400_icg_buf", CLK_IS_CRITICAL, + JHB100_SYS0CLK_HOSTSS1_PHY_SCAN_400), + /* npu */ + JH71X0__DIV(JHB100_SYS0CLK_NPU_NCNOC_INIT, "npu_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + /* vout */ + JH71X0__DIV(JHB100_SYS0CLK_VOUT_NCNOC_INIT, "vout_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_VOUT_AUX, "vout_aux", 150, + JHB100_SYS0CLK_PLL0), + /* bmcperiph3 */ + JH71X0__DIV(JHB100_SYS0CLK_BMCPER3_NCNOC_INIT, "bmcper3_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + /* hostusb */ + JH71X0__DIV(JHB100_SYS0CLK_HOSTUSB_NCNOC_INIT, "hostusb_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + /* hostusbcmn */ + JH71X0__DIV(JHB100_SYS0CLK_HOSTUSBCMN_CFG_480, "hostusbcmn_cfg_480", 5, + JHB100_SYS0CLK_PLL0), + /* bmcperiph1 */ + JH71X0__DIV(JHB100_SYS0CLK_BMCPER1_NCNOC_INIT, "bmcper1_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER1_CFG_800, "bmcper1_cfg_800", 4, + JHB100_SYS0CLK_PLL0), + /* bmcperiph0 */ + JH71X0__DIV(JHB100_SYS0CLK_BMCPER0_NCNOC_INIT, "bmcper0_ncnoc_init", 6, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER0_CFG_400, "bmcper0_cfg_400", 8, + JHB100_SYS0CLK_PLL0), + JH71X0__DIV(JHB100_SYS0CLK_BMCPER0_CFG_800, "bmcper0_cfg_800", 8, + JHB100_SYS0CLK_PLL0), + /* gpu0 */ + JH71X0__DIV(JHB100_SYS0CLK_GPU0_NCNOC_INIT, "gpu0_ncnoc_init", 10, + JHB100_SYS0CLK_PLL0), + /* gpu1 */ + JH71X0__DIV(JHB100_SYS0CLK_GPU1_NCNOC_INIT, "gpu1_ncnoc_init", 10, + JHB100_SYS0CLK_PLL0), +}; + +static const struct jh71x0_crg_domain_info jhb100_sys0crg_info = { + .clk_data = jhb100_sys0crg_clk_data, + .num_clk = ARRAY_SIZE(jhb100_sys0crg_clk_data), + .ext_clk = jhb100_sys0_ext_clk, + .num_ext_clk = ARRAY_SIZE(jhb100_sys0_ext_clk), + .rst_name = "jhb100-r-sys0", + .power_domain = false, +}; + +static const struct of_device_id jhb100_sys0crg_match[] = { + { + .compatible = "starfive,jhb100-sys0crg", + .data = &jhb100_sys0crg_info, + }, + { /* sentinel */ } +}; + +static struct platform_driver jhb100_sys0crg_driver = { + .probe = jh71x0_crg_probe, + .driver = { + .name = "clk-starfive-jhb100-sys0", + .of_match_table = jhb100_sys0crg_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver(jhb100_sys0crg_driver);
--
2.25.1