Create the template for a new DM reset driver for the Allwinner A64 SoC.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/reset/Kconfig | 2 + drivers/reset/Makefile | 1 + drivers/reset/sunxi/Kconfig | 19 ++++++++++ drivers/reset/sunxi/Makefile | 7 ++++ drivers/reset/sunxi/reset_a64.c | 67 +++++++++++++++++++++++++++++++++ 5 files changed, 96 insertions(+) create mode 100644 drivers/reset/sunxi/Kconfig create mode 100644 drivers/reset/sunxi/Makefile create mode 100644 drivers/reset/sunxi/reset_a64.c
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 33c39b7fb6..f95b38a35f 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -98,4 +98,6 @@ config RESET_SOCFPGA help Support for reset controller on SoCFPGA platform.
+source "drivers/reset/sunxi/Kconfig" + endmenu diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index ad08be4c8c..7530b5368d 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_AST2500_RESET) += ast2500-reset.o obj-$(CONFIG_RESET_ROCKCHIP) += reset-rockchip.o obj-$(CONFIG_RESET_MESON) += reset-meson.o obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o +obj-$(CONFIG_RESET_SUNXI) += sunxi/ diff --git a/drivers/reset/sunxi/Kconfig b/drivers/reset/sunxi/Kconfig new file mode 100644 index 0000000000..c0dfa56071 --- /dev/null +++ b/drivers/reset/sunxi/Kconfig @@ -0,0 +1,19 @@ +config RESET_SUNXI + bool "RESET support for Allwinner SoCs" + depends on ARCH_SUNXI + depends on CLK_SUNXI + select DM_RESET + help + This enables support for common reset driver API on Allwinner + SoCs. + +if RESET_SUNXI + +config RESET_SUN50I_A64 + bool "Reset driver for Allwinner A64" + default MACH_SUN50I + help + This enables common reset driver support for platforms based + on Allwinner A64 SoC. + +endif # RESET_SUNXI diff --git a/drivers/reset/sunxi/Makefile b/drivers/reset/sunxi/Makefile new file mode 100644 index 0000000000..cc80b11818 --- /dev/null +++ b/drivers/reset/sunxi/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (C) 2018 Amarula Solutions +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_RESET_SUN50I_A64) += reset_a64.o diff --git a/drivers/reset/sunxi/reset_a64.c b/drivers/reset/sunxi/reset_a64.c new file mode 100644 index 0000000000..595af5aa6e --- /dev/null +++ b/drivers/reset/sunxi/reset_a64.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2018 Amarula Solutions B.V. + * Author: Jagan Teki jagan@amarulasolutions.com + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <reset-uclass.h> +#include <asm/io.h> +#include <dm/lists.h> +#include <dt-bindings/reset/sun50i-a64-ccu.h> + +struct a64_reset_priv { + void *base; +}; + +static int a64_reset_request(struct reset_ctl *reset_ctl) +{ + debug("%s(#%ld)\n", __func__, reset_ctl->id); + + return 0; +} + +static int a64_reset_free(struct reset_ctl *reset_ctl) +{ + debug("%s(#%ld)\n", __func__, reset_ctl->id); + + return 0; +} + +static int a64_reset_assert(struct reset_ctl *reset_ctl) +{ + debug("%s(#%ld)\n", __func__, reset_ctl->id); + + debug(" unhandled\n"); + return -EINVAL; +} + +static int a64_reset_deassert(struct reset_ctl *reset_ctl) +{ + debug("%s(#%ld)\n", __func__, reset_ctl->id); + + debug(" unhandled\n"); + return -EINVAL; +} + +struct reset_ops a64_reset_ops = { + .request = a64_reset_request, + .free = a64_reset_free, + .rst_assert = a64_reset_assert, + .rst_deassert = a64_reset_deassert, +}; + +static int a64_reset_probe(struct udevice *dev) +{ + return 0; +} + +U_BOOT_DRIVER(reset_sun50i_a64) = { + .name = "sun50i_a64_reset", + .id = UCLASS_RESET, + .ops = &a64_reset_ops, + .probe = a64_reset_probe, + .priv_auto_alloc_size = sizeof(struct a64_reset_priv), +};