mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-08-25 00:21:28 +02:00
8fd06aeb8a
Add basic Power Management Unit (PMU) driver for Exynos SoCs. For now it's only capable of changing UART path in PMU, which is needed for E850-96 board. The driver's structure resembles the exynos-pmu driver from Linux kernel, and although it's very basic and slim at the moment, it can be easily extended in future if the need arises. UCLASS_NOP is used, as there are no benefits in using more elaborate classes like UCLASS_MISC in this case. The DM_FLAG_PROBE_AFTER_BIND flag is added in bind function, as the probe function must be always called for this driver. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Reviewed-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
34 lines
973 B
Plaintext
34 lines
973 B
Plaintext
# SPDX-License-Identifier: GPL-2.0+
|
|
|
|
menuconfig SOC_SAMSUNG
|
|
bool "Samsung SoC drivers support"
|
|
|
|
if SOC_SAMSUNG
|
|
|
|
config EXYNOS_PMU
|
|
bool "Exynos PMU controller driver"
|
|
depends on ARCH_EXYNOS
|
|
select REGMAP
|
|
select SYSCON
|
|
help
|
|
Enable support for system controller configuration driver. It allows
|
|
one to configure system controller registers (e.g. some register in
|
|
PMU syscon) by providing register's offset, mask and value.
|
|
|
|
config EXYNOS_USI
|
|
bool "Exynos USI (Universal Serial Interface) driver"
|
|
depends on ARCH_EXYNOS
|
|
select MISC
|
|
select REGMAP
|
|
select SYSCON
|
|
help
|
|
Enable support for USI block. USI (Universal Serial Interface) is an
|
|
IP-core found in modern Samsung Exynos SoCs, like Exynos850 and
|
|
ExynosAutoV9. USI block can be configured to provide one of the
|
|
following serial protocols: UART, SPI or High Speed I2C.
|
|
|
|
This driver allows one to configure USI for desired protocol, which
|
|
is usually done in USI node in Device Tree.
|
|
|
|
endif
|