From: Patrice Chotard Date: Tue, 3 Feb 2026 16:49:22 +0000 (+0100) Subject: reset: stm32mp21: add stm32mp21 reset driver X-Git-Tag: v2026.04-rc4~19^2~17 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=56356278331ee3934484ce8ee83aea892e3c0710;p=thirdparty%2Fu-boot.git reset: stm32mp21: add stm32mp21 reset driver Implement STM32MP21 reset drivers using stm32-core-reset API. Signed-off-by: Gabriel Fernandez Signed-off-by: Patrice Chotard Reviewed-by: Patrick Delaunay --- diff --git a/drivers/reset/stm32/Kconfig b/drivers/reset/stm32/Kconfig index fdd88a6bfae..1bafba516af 100644 --- a/drivers/reset/stm32/Kconfig +++ b/drivers/reset/stm32/Kconfig @@ -14,6 +14,13 @@ config RESET_STM32MP1 Support for reset controllers on STMicroelectronics STM32MP1 family SoCs. This reset driver is compatible with STM32MP13 and STM32MP15 SoCs. +config RESET_STM32MP21 + bool "Enable the STM32MP21 reset" + default y if STM32MP21X + help + Support for reset controllers on STMicroelectronics STM32MP21 family SoCs. + This reset driver is compatible with STM32MP21 SoCs. + config RESET_STM32MP25 bool "Enable the STM32MP25 reset" depends on STM32MP23X || STM32MP25X diff --git a/drivers/reset/stm32/Makefile b/drivers/reset/stm32/Makefile index c31ae524ba1..ac4d3c6fc8f 100644 --- a/drivers/reset/stm32/Makefile +++ b/drivers/reset/stm32/Makefile @@ -6,4 +6,5 @@ obj-y += stm32-reset-core.o obj-$(CONFIG_RESET_STM32) += stm32-reset.o obj-$(CONFIG_RESET_STM32MP1) += stm32-reset-mp1.o +obj-$(CONFIG_RESET_STM32MP21) += stm32-reset-mp21.o obj-$(CONFIG_RESET_STM32MP25) += stm32-reset-mp25.o diff --git a/drivers/reset/stm32/stm32-reset-mp21.c b/drivers/reset/stm32/stm32-reset-mp21.c new file mode 100644 index 00000000000..7d169d7582f --- /dev/null +++ b/drivers/reset/stm32/stm32-reset-mp21.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause +/* + * Copyright (C) 2026, STMicroelectronics - All Rights Reserved + * Author(s): Gabriel Fernandez, for STMicroelectronics. + */ + +#include +#include +#include +#include + +/* Reset clear offset for STM32MP RCC */ +#define RCC_CLR_OFFSET 0x4 + +/* Timeout for deassert */ +#define STM32_DEASSERT_TIMEOUT_US 10000 + +#define RESET(id, _offset, _bit_idx, _set_clr) \ + [id] = &(struct stm32_reset_cfg){ \ + .offset = (_offset), \ + .bit_idx = (_bit_idx), \ + .set_clr = (_set_clr), \ + } + +static const struct stm32_reset_cfg *stm32mp21_reset[] = { + RESET(TIM1_R, RCC_TIM1CFGR, 0, 0), + RESET(TIM2_R, RCC_TIM2CFGR, 0, 0), + RESET(TIM3_R, RCC_TIM3CFGR, 0, 0), + RESET(TIM4_R, RCC_TIM4CFGR, 0, 0), + RESET(TIM5_R, RCC_TIM5CFGR, 0, 0), + RESET(TIM6_R, RCC_TIM6CFGR, 0, 0), + RESET(TIM7_R, RCC_TIM7CFGR, 0, 0), + RESET(TIM8_R, RCC_TIM8CFGR, 0, 0), + RESET(TIM10_R, RCC_TIM10CFGR, 0, 0), + RESET(TIM11_R, RCC_TIM11CFGR, 0, 0), + RESET(TIM12_R, RCC_TIM12CFGR, 0, 0), + RESET(TIM13_R, RCC_TIM13CFGR, 0, 0), + RESET(TIM14_R, RCC_TIM14CFGR, 0, 0), + RESET(TIM15_R, RCC_TIM15CFGR, 0, 0), + RESET(TIM16_R, RCC_TIM16CFGR, 0, 0), + RESET(TIM17_R, RCC_TIM17CFGR, 0, 0), + RESET(LPTIM1_R, RCC_LPTIM1CFGR, 0, 0), + RESET(LPTIM2_R, RCC_LPTIM2CFGR, 0, 0), + RESET(LPTIM3_R, RCC_LPTIM3CFGR, 0, 0), + RESET(LPTIM4_R, RCC_LPTIM4CFGR, 0, 0), + RESET(LPTIM5_R, RCC_LPTIM5CFGR, 0, 0), + RESET(SPI1_R, RCC_SPI1CFGR, 0, 0), + RESET(SPI2_R, RCC_SPI2CFGR, 0, 0), + RESET(SPI3_R, RCC_SPI3CFGR, 0, 0), + RESET(SPI4_R, RCC_SPI4CFGR, 0, 0), + RESET(SPI5_R, RCC_SPI5CFGR, 0, 0), + RESET(SPI6_R, RCC_SPI6CFGR, 0, 0), + RESET(SPDIFRX_R, RCC_SPDIFRXCFGR, 0, 0), + RESET(USART1_R, RCC_USART1CFGR, 0, 0), + RESET(USART2_R, RCC_USART2CFGR, 0, 0), + RESET(USART3_R, RCC_USART3CFGR, 0, 0), + RESET(UART4_R, RCC_UART4CFGR, 0, 0), + RESET(UART5_R, RCC_UART5CFGR, 0, 0), + RESET(USART6_R, RCC_USART6CFGR, 0, 0), + RESET(UART7_R, RCC_UART7CFGR, 0, 0), + RESET(LPUART1_R, RCC_LPUART1CFGR, 0, 0), + RESET(I2C1_R, RCC_I2C1CFGR, 0, 0), + RESET(I2C2_R, RCC_I2C2CFGR, 0, 0), + RESET(I2C3_R, RCC_I2C3CFGR, 0, 0), + RESET(SAI1_R, RCC_SAI1CFGR, 0, 0), + RESET(SAI2_R, RCC_SAI2CFGR, 0, 0), + RESET(SAI3_R, RCC_SAI3CFGR, 0, 0), + RESET(SAI4_R, RCC_SAI4CFGR, 0, 0), + RESET(MDF1_R, RCC_MDF1CFGR, 0, 0), + RESET(FDCAN_R, RCC_FDCANCFGR, 0, 0), + RESET(HDP_R, RCC_HDPCFGR, 0, 0), + RESET(ADC1_R, RCC_ADC1CFGR, 0, 0), + RESET(ADC2_R, RCC_ADC2CFGR, 0, 0), + RESET(ETH1_R, RCC_ETH1CFGR, 0, 0), + RESET(ETH2_R, RCC_ETH2CFGR, 0, 0), + RESET(USBH_R, RCC_USBHCFGR, 0, 0), + RESET(USB2PHY1_R, RCC_USB2PHY1CFGR, 0, 0), + RESET(USB2PHY2_R, RCC_USB2PHY2CFGR, 0, 0), + RESET(SDMMC1_R, RCC_SDMMC1CFGR, 0, 0), + RESET(SDMMC1DLL_R, RCC_SDMMC1CFGR, 16, 0), + RESET(SDMMC2_R, RCC_SDMMC2CFGR, 0, 0), + RESET(SDMMC2DLL_R, RCC_SDMMC2CFGR, 16, 0), + RESET(SDMMC3_R, RCC_SDMMC3CFGR, 0, 0), + RESET(SDMMC3DLL_R, RCC_SDMMC3CFGR, 16, 0), + RESET(LTDC_R, RCC_LTDCCFGR, 0, 0), + RESET(CSI_R, RCC_CSICFGR, 0, 0), + RESET(DCMIPP_R, RCC_DCMIPPCFGR, 0, 0), + RESET(DCMIPSSI_R, RCC_DCMIPSSICFGR, 0, 0), + RESET(WWDG1_R, RCC_WWDG1CFGR, 0, 0), + RESET(VREF_R, RCC_VREFCFGR, 0, 0), + RESET(DTS_R, RCC_DTSCFGR, 0, 0), + RESET(CRC_R, RCC_CRCCFGR, 0, 0), + RESET(SERC_R, RCC_SERCCFGR, 0, 0), + RESET(I3C1_R, RCC_I3C1CFGR, 0, 0), + RESET(I3C2_R, RCC_I3C2CFGR, 0, 0), + RESET(IWDG2_KER_R, RCC_IWDGC1CFGSETR, 18, 1), + RESET(IWDG4_KER_R, RCC_IWDGC2CFGSETR, 18, 1), + RESET(RNG1_R, RCC_RNG1CFGR, 0, 0), + RESET(RNG2_R, RCC_RNG2CFGR, 0, 0), + RESET(PKA_R, RCC_PKACFGR, 0, 0), + RESET(SAES_R, RCC_SAESCFGR, 0, 0), + RESET(HASH1_R, RCC_HASH1CFGR, 0, 0), + RESET(HASH2_R, RCC_HASH2CFGR, 0, 0), + RESET(CRYP1_R, RCC_CRYP1CFGR, 0, 0), + RESET(CRYP2_R, RCC_CRYP2CFGR, 0, 0), + RESET(OTG_R, RCC_OTGCFGR, 0, 0), +}; + +static const struct stm32_reset_cfg *stm32_get_reset_line(struct reset_ctl *reset_ctl) +{ + unsigned long id = reset_ctl->id; + + if (id < ARRAY_SIZE(stm32mp21_reset)) + return stm32mp21_reset[id]; + + return NULL; +} + +static const struct stm32_reset_data stm32mp21_reset_data = { + .get_reset_line = stm32_get_reset_line, + .clear_offset = RCC_CLR_OFFSET, + .reset_us = STM32_DEASSERT_TIMEOUT_US, +}; + +static int stm32_reset_probe(struct udevice *dev) +{ + return stm32_reset_core_probe(dev, &stm32mp21_reset_data); +} + +U_BOOT_DRIVER(stm32mp21_rcc_reset) = { + .name = "stm32mp21_reset", + .id = UCLASS_RESET, + .probe = stm32_reset_probe, + .priv_auto = sizeof(struct stm32_reset_priv), + .ops = &stm32_reset_ops, +};