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Wed, 3 Jun 2026 05:54:13 +0000 From: Changhuang Liang To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Emil Renner Berthing , Paul Walmsley , Albert Ou , Palmer Dabbelt , Alexandre Ghiti , Philipp Zabel , Bartosz Golaszewski Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, Lianfeng Ouyang , Changhuang Liang Subject: [PATCH v3 10/21] pinctrl: starfive: Add StarFive JHB100 sys2 controller driver Date: Tue, 2 Jun 2026 22:53:36 -0700 Message-Id: <20260603055347.66845-11-changhuang.liang@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260603055347.66845-1-changhuang.liang@starfivetech.com> References: <20260603055347.66845-1-changhuang.liang@starfivetech.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SH0PR01CA0002.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:5::14) To ZQ4PR01MB1202.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:17::6) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: ZQ4PR01MB1202:EE_|ZQ4PR01MB1153:EE_ X-MS-Office365-Filtering-Correlation-Id: fde42834-7bca-4bef-48e0-08dec1348a1e X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|376014|52116014|366016|3023799007|22082099003|18002099003|6133799003|5023799004|56012099006|38350700014|921020; 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Co-developed-by: Lianfeng Ouyang Signed-off-by: Lianfeng Ouyang Signed-off-by: Changhuang Liang --- drivers/pinctrl/starfive/Kconfig | 12 ++ drivers/pinctrl/starfive/Makefile | 1 + .../starfive/pinctrl-starfive-jhb100-sys2.c | 134 ++++++++++++++++++ 3 files changed, 147 insertions(+) create mode 100644 drivers/pinctrl/starfive/pinctrl-starfive-jhb100-sys2.c diff --git a/drivers/pinctrl/starfive/Kconfig b/drivers/pinctrl/starfive/Kconfig index 882d621eaf57..da11d486779a 100644 --- a/drivers/pinctrl/starfive/Kconfig +++ b/drivers/pinctrl/starfive/Kconfig @@ -90,3 +90,15 @@ config PINCTRL_STARFIVE_JHB100_SYS1 This also provides an interface to the GPIO pins not used by other peripherals supporting inputs, outputs, configuring pull-up/pull-down and interrupts on input changes. + +config PINCTRL_STARFIVE_JHB100_SYS2 + tristate "StarFive JHB100 SoC System-2 pinctrl and GPIO driver" + depends on ARCH_STARFIVE || COMPILE_TEST + depends on OF + select PINCTRL_STARFIVE_JHB100 + default ARCH_STARFIVE + help + Say yes here to support System-2 pin control on the StarFive JHB100 SoC. + This also provides an interface to the GPIO pins not used by other + peripherals supporting inputs, outputs, configuring pull-up/pull-down + and interrupts on input changes. diff --git a/drivers/pinctrl/starfive/Makefile b/drivers/pinctrl/starfive/Makefile index 8d96cf80d377..b817ad93b91d 100644 --- a/drivers/pinctrl/starfive/Makefile +++ b/drivers/pinctrl/starfive/Makefile @@ -10,3 +10,4 @@ obj-$(CONFIG_PINCTRL_STARFIVE_JHB100) += pinctrl-starfive-jhb100.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS0) += pinctrl-starfive-jhb100-sys0.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS0H) += pinctrl-starfive-jhb100-sys0h.o obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS1) += pinctrl-starfive-jhb100-sys1.o +obj-$(CONFIG_PINCTRL_STARFIVE_JHB100_SYS2) += pinctrl-starfive-jhb100-sys2.o diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-sys2.c b/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-sys2.c new file mode 100644 index 000000000000..59ea9bdaa078 --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jhb100-sys2.c @@ -0,0 +1,134 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Pinctrl / GPIO driver for StarFive JHB100 SoC System-2 domain + * + * Copyright (C) 2024 StarFive Technology Co., Ltd. + * Author: Alex Soo + * + */ + +#include +#include +#include + +#include "pinctrl-starfive-jhb100.h" + +static const struct jhb100_pin_layout_desc jhb100_sys2_pl_desc[] = { + { .pin_start = 0, .pin_cnt = 37, .name = "gpio", .gpio_func_sel = 0 }, + { .pin_start = 37, .pin_cnt = 1, .name = "jtag_tck", .gpio_func_sel = -1 }, + { .pin_start = 38, .pin_cnt = 1, .name = "jtag_tresetn", .gpio_func_sel = -1 }, + { .pin_start = 39, .pin_cnt = 1, .name = "jtag_tmc", .gpio_func_sel = -1 }, + { .pin_start = 40, .pin_cnt = 1, .name = "jtag_tdi", .gpio_func_sel = -1 }, + { .pin_start = 41, .pin_cnt = 1, .name = "jtag_tdo", .gpio_func_sel = -1 }, + { .pin_start = 42, .pin_cnt = 1, .name = "jtag_hpd", .gpio_func_sel = -1 }, + { 0xff }, +}; + +static struct config_reg_layout_desc jhb100_sys2_pinctrl_rl_desc[] = { + { + .pin_start = 0, + .pin_cnt = 37, + .drive_strength_2bit = { .shift = 0, .width = 2 }, + .input_enable = { .shift = 2, .width = 1 }, + .pull_down = { .shift = 3, .width = 1 }, + .pull_up = { .shift = 4, .width = 1 }, + .slew_rate = { .shift = 5, .width = 1 }, + .schmitt_trigger_select = { .shift = 6, .width = 1 }, + .reserved = { .shift = 7, .width = 8 }, + .debounce_width = { .shift = 15, .width = 17 }, + }, + { + .pin_start = 37, + .pin_cnt = 6, + .drive_strength_2bit = { .shift = 0, .width = 2 }, + .input_enable = { .shift = 2, .width = 1 }, + .pull_down = { .shift = 3, .width = 1 }, + .pull_up = { .shift = 4, .width = 1 }, + .slew_rate = { .shift = 5, .width = 1 }, + .schmitt_trigger_select = { .shift = 6, .width = 1 }, + .reserved = { .shift = 7, .width = 25 }, + }, + { 0xff }, +}; + +static const struct pinvref_desc pinvref_desc_sys2[] = { + { + /* gpiow */ + .pin_grp = { + PADNUM_SYS2_GPIO_A36, + PADNUM_SYS2_GPIO_A37, + PADNUM_SYS2_GPIO_A38, + PADNUM_SYS2_GPIO_A39 + }, + .num_pins = 4, + .range = BIT(JHB100_PINVREF_1_8V) | BIT(JHB100_PINVREF_3_3V) + }, + { + /* gpiow-inner */ + .pin_grp = { + PADNUM_SYS2_GPIO_A40, + PADNUM_SYS2_GPIO_A41, + PADNUM_SYS2_GPIO_A42, + PADNUM_SYS2_GPIO_A43 + }, + .num_pins = 4, + .range = BIT(JHB100_PINVREF_1_8V) | BIT(JHB100_PINVREF_3_3V) + }, +}; + +struct starfive_pinctrl_regs jhb100_sys2_pinctrl_regs = { + .vref = { .reg = 0x000, .pv_desc = pinvref_desc_sys2, + .num_pv = ARRAY_SIZE(pinvref_desc_sys2) }, + .func_sel = { .reg = 0x0d4, .width_per_pin = 2 }, + .config = 0x010, + .output = 0x0bc, + .output_en = 0x0c4, + .gpio_status = 0x0cc, + .irq_en = 0x0e0, + .irq_status = 0x0e8, + .irq_clr = 0x0f0, + .irq_trigger = 0x0f8, + .irq_level = 0x100, + .irq_both_edge = 0x108, + .irq_edge = 0x110, +}; + +static const struct jhb100_pinctrl_func_maps jhb100_func_maps_sys2[] = { + { .func = "gpio", .val = 0 }, + { .func = "host0_port80", .val = 2 }, + { .func = "host1_port80", .val = 3 }, + { .func = "jtag", .val = 2 }, + { .func = "smbalert", .val = 2 }, + { .func = "uart", .val = 1 }, +}; + +static const struct jhb100_pinctrl_domain_info jhb100_sys2_pinctrl_info = { + .name = "jhb100-sys2", + .pl_desc = jhb100_sys2_pl_desc, + .crl_desc = jhb100_sys2_pinctrl_rl_desc, + .regs = &jhb100_sys2_pinctrl_regs, + .fmaps = jhb100_func_maps_sys2, + .num_maps = ARRAY_SIZE(jhb100_func_maps_sys2), +}; + +static const struct of_device_id jhb100_sys2_pinctrl_of_match[] = { + { + .compatible = "starfive,jhb100-sys2-pinctrl", + .data = &jhb100_sys2_pinctrl_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jhb100_sys2_pinctrl_of_match); + +static struct platform_driver jhb100_sys2_pinctrl_driver = { + .probe = jhb100_pinctrl_probe, + .driver = { + .name = "starfive-jhb100-sys2-pinctrl", + .of_match_table = jhb100_sys2_pinctrl_of_match, + }, +}; +module_platform_driver(jhb100_sys2_pinctrl_driver); + +MODULE_DESCRIPTION("Pinctrl driver for StarFive JHB100 SoC System-2 domain"); +MODULE_AUTHOR("Alex Soo "); +MODULE_LICENSE("GPL"); -- 2.25.1