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author | Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> | 2019-07-15 21:47:53 +0200 |
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committer | Marek Vasut <marex@denx.de> | 2019-07-21 12:45:10 +0200 |
commit | 1f1668883d0e1ec68a9b4658ec746ef21b3148da (patch) | |
tree | a9b62635e81e6e2d1cdaa912e98db412cccbe958 /drivers/sysreset/sysreset_socfpga.c | |
parent | cb20fe8f0b9ad9a9d48e243f7f72ab277b75a00f (diff) | |
download | u-boot-1f1668883d0e1ec68a9b4658ec746ef21b3148da.zip u-boot-1f1668883d0e1ec68a9b4658ec746ef21b3148da.tar.gz u-boot-1f1668883d0e1ec68a9b4658ec746ef21b3148da.tar.bz2 |
sysreset: socfpga: gen5: add sysreset driver
This adds a UCLASS_SYSRESET sysreset driver for socfgpa gen5.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Diffstat (limited to 'drivers/sysreset/sysreset_socfpga.c')
-rw-r--r-- | drivers/sysreset/sysreset_socfpga.c | 56 |
1 files changed, 56 insertions, 0 deletions
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, +}; |