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sysreset: Add BL808 sysreset driver

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Signed-off-by: Samuel Holland <samuel@sholland.org>
This commit is contained in:
Samuel Holland 2022-12-01 22:47:01 -06:00
parent 8d1d10918e
commit 8bbd8aee0c
3 changed files with 49 additions and 0 deletions
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6
drivers/sysreset/Kconfig
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@ -66,6 +66,12 @@ config POWEROFF_GPIO
Support for system poweroff using a GPIO pin. This can be used
for systems having a single GPIO to trigger a system poweroff.
config SYSRESET_BL808
bool "Enable support for BL808 system reset"
depends on TARGET_BOUFFALO_BL808
help
This enables the system reset driver support for the BL808 SoC.
config SYSRESET_GPIO
bool "Enable support for GPIO reset driver"
select DM_GPIO

1
drivers/sysreset/Makefile
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@ -8,6 +8,7 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += sysreset_rockchip.o
obj-$(CONFIG_ARCH_STI) += sysreset_sti.o
obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o
obj-$(CONFIG_POWEROFF_GPIO) += poweroff_gpio.o
obj-$(CONFIG_SYSRESET_BL808) += sysreset_bl808.o
obj-$(CONFIG_SYSRESET_GPIO) += sysreset_gpio.o
obj-$(CONFIG_SYSRESET_MPC83XX) += sysreset_mpc83xx.o
obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o

42
drivers/sysreset/sysreset_bl808.c Normal file
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@ -0,0 +1,42 @@
// SPDX-License-Identifier: GPL-2.0+
#include <dm.h>
#include <sysreset.h>
#include <asm/io.h>
#include <bl808/glb_reg.h>
struct bl808_sysreset_plat {
void *base;
};
static int bl808_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct bl808_sysreset_plat *plat = dev_get_plat(dev);
setbits_le32(plat->base + GLB_SWRST_CFG2_OFFSET,
GLB_REG_CTRL_PWRON_RST_MSK);
return -EINPROGRESS;
}
static struct sysreset_ops bl808_sysreset_ops = {
.request = bl808_sysreset_request,
};
static int bl808_sysreset_of_to_plat(struct udevice *dev)
{
struct bl808_sysreset_plat *plat = dev_get_plat(dev);
plat->base = dev_read_addr_ptr(dev);
if (!plat->base)
return -ENOMEM;
return 0;
}
U_BOOT_DRIVER(bl808_sysreset) = {
.name = "bl808_sysreset",
.id = UCLASS_SYSRESET,
.of_to_plat = bl808_sysreset_of_to_plat,
.ops = &bl808_sysreset_ops,
};