Since commit 1517126fdac2 ("ARM: uniphier: select DM_ETH"), DM-based drivers/net/smc911x.c is compiled, but it is never probed because the parent node lacks the DM-based driver.
I need a skeleton driver to populate child devices (but the next commit will move more hardware settings to the this driver).
I put this to drivers/bus/uniphier-system-bus.c because this is the same path as the driver in Linux kernel.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
arch/arm/mach-uniphier/Kconfig | 1 + drivers/Kconfig | 2 ++ drivers/Makefile | 1 + drivers/bus/Kconfig | 16 ++++++++++++++++ drivers/bus/Makefile | 6 ++++++ drivers/bus/uniphier-system-bus.c | 14 ++++++++++++++ 6 files changed, 40 insertions(+) create mode 100644 drivers/bus/Kconfig create mode 100644 drivers/bus/Makefile create mode 100644 drivers/bus/uniphier-system-bus.c
diff --git a/arch/arm/mach-uniphier/Kconfig b/arch/arm/mach-uniphier/Kconfig index e125f50fa6..3a8eee7b84 100644 --- a/arch/arm/mach-uniphier/Kconfig +++ b/arch/arm/mach-uniphier/Kconfig @@ -83,6 +83,7 @@ config CACHE_UNIPHIER
config MICRO_SUPPORT_CARD bool "Use Micro Support Card" + depends on UNIPHIER_SYSTEM_BUS help This option provides support for the expansion board, available on some UniPhier reference boards. diff --git a/drivers/Kconfig b/drivers/Kconfig index e34a22708c..7a839fa1aa 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -10,6 +10,8 @@ source "drivers/ata/Kconfig"
source "drivers/axi/Kconfig"
+source "drivers/bus/Kconfig" + source "drivers/block/Kconfig"
source "drivers/bootcount/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index 94e8c5da17..afd159e903 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -74,6 +74,7 @@ ifeq ($(CONFIG_SPL_BUILD)$(CONFIG_TPL_BUILD),)
obj-y += adc/ obj-y += ata/ +obj-y += bus/ obj-$(CONFIG_DM_DEMO) += demo/ obj-$(CONFIG_BIOSEMU) += bios_emulator/ obj-y += block/ diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig new file mode 100644 index 0000000000..07a33c6287 --- /dev/null +++ b/drivers/bus/Kconfig @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Bus Devices +# + +menu "Bus devices" + +config UNIPHIER_SYSTEM_BUS + bool "UniPhier System Bus driver" + depends on ARCH_UNIPHIER + default y + help + Support for UniPhier System Bus, a simple external bus. This is + needed to use on-board devices connected to UniPhier SoCs. + +endmenu diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile new file mode 100644 index 0000000000..0b97fc1f8b --- /dev/null +++ b/drivers/bus/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the bus drivers. +# + +obj-$(CONFIG_UNIPHIER_SYSTEM_BUS) += uniphier-system-bus.o diff --git a/drivers/bus/uniphier-system-bus.c b/drivers/bus/uniphier-system-bus.c new file mode 100644 index 0000000000..c61d795bac --- /dev/null +++ b/drivers/bus/uniphier-system-bus.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <dm.h> + +static const struct udevice_id uniphier_system_bus_match[] = { + { .compatible = "socionext,uniphier-system-bus" }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(uniphier_system_bus_driver) = { + .name = "uniphier-system-bus", + .id = UCLASS_SIMPLE_BUS, + .of_match = uniphier_system_bus_match, +};