diff options
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | drivers/sysreset/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/sysreset/Makefile | 1 | ||||
| -rw-r--r-- | drivers/sysreset/sysreset_socfpga.c | 56 |
4 files changed, 65 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index bc67c49..8031cc9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -94,6 +94,7 @@ M: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> S: Maintainted T: git https://gitlab.denx.de/u-boot/custodians/u-boot-socfpga.git F: arch/arm/mach-socfpga/ +F: drivers/sysreset/sysreset_socfpga.c ARM AMLOGIC SOC SUPPORT M: Neil Armstrong <narmstrong@baylibre.com> diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig index 30aed2c..6b4bec1 100644 --- a/drivers/sysreset/Kconfig +++ b/drivers/sysreset/Kconfig @@ -54,6 +54,13 @@ config SYSRESET_PSCI Enable PSCI SYSTEM_RESET function call. To use this, PSCI firmware must be running on your system. +config SYSRESET_SOCFPGA + bool "Enable support for Intel SOCFPGA family" + depends on ARCH_SOCFPGA && (TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10) + help + This enables the system reset driver support for Intel SOCFPGA SoCs + (Cyclone 5, Arria 5 and Arria 10). + config SYSRESET_TI_SCI bool "TI System Control Interface (TI SCI) system reset driver" depends on TI_SCI_PROTOCOL diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile index 8e1c845..180e463 100644 --- a/drivers/sysreset/Makefile +++ b/drivers/sysreset/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_SYSRESET_GPIO) += sysreset_gpio.o obj-$(CONFIG_SYSRESET_MCP83XX) += sysreset_mpc83xx.o obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o obj-$(CONFIG_SYSRESET_PSCI) += sysreset_psci.o +obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o diff --git a/drivers/sysreset/sysreset_socfpga.c b/drivers/sysreset/sysreset_socfpga.c new file mode 100644 index 0000000..d6c26a5 --- /dev/null +++ b/drivers/sysreset/sysreset_socfpga.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Pepperl+Fuchs + * Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <sysreset.h> +#include <asm/io.h> +#include <asm/arch/reset_manager.h> + +struct socfpga_sysreset_data { + struct socfpga_reset_manager *rstmgr_base; +}; + +static int socfpga_sysreset_request(struct udevice *dev, + enum sysreset_t type) +{ + struct socfpga_sysreset_data *data = dev_get_priv(dev); + + switch (type) { + case SYSRESET_WARM: + writel(BIT(RSTMGR_CTRL_SWWARMRSTREQ_LSB), + &data->rstmgr_base->ctrl); + break; + case SYSRESET_COLD: + writel(BIT(RSTMGR_CTRL_SWCOLDRSTREQ_LSB), + &data->rstmgr_base->ctrl); + break; + default: + return -EPROTONOSUPPORT; + } + return -EINPROGRESS; +} + +static int socfpga_sysreset_probe(struct udevice *dev) +{ + struct socfpga_sysreset_data *data = dev_get_priv(dev); + + data->rstmgr_base = devfdt_get_addr_ptr(dev); + return 0; +} + +static struct sysreset_ops socfpga_sysreset = { + .request = socfpga_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_socfpga) = { + .id = UCLASS_SYSRESET, + .name = "socfpga_sysreset", + .priv_auto_alloc_size = sizeof(struct socfpga_sysreset_data), + .ops = &socfpga_sysreset, + .probe = socfpga_sysreset_probe, +}; |