The PMC can be modelled as a syscon peripheral. Add a driver for this so that it can be accessed by drivers when needed.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/arm/include/asm/arch-tegra/tegra.h | 5 +++++ arch/arm/mach-tegra/tegra124/Makefile | 1 + arch/arm/mach-tegra/tegra124/pmc.c | 19 +++++++++++++++++++ configs/nyan-big_defconfig | 2 ++ 4 files changed, 27 insertions(+) create mode 100644 arch/arm/mach-tegra/tegra124/pmc.c
diff --git a/arch/arm/include/asm/arch-tegra/tegra.h b/arch/arm/include/asm/arch-tegra/tegra.h index 3add1b3c09..3b9711d28e 100644 --- a/arch/arm/include/asm/arch-tegra/tegra.h +++ b/arch/arm/include/asm/arch-tegra/tegra.h @@ -97,6 +97,11 @@ enum { TEGRA_SOC_UNKNOWN = -1, };
+/* Tegra system controller (SYSCON) devices */ +enum { + TEGRA_SYSCON_PMC, +}; + #else /* __ASSEMBLY__ */ #define PRM_RSTCTRL NV_PA_PMC_BASE #endif diff --git a/arch/arm/mach-tegra/tegra124/Makefile b/arch/arm/mach-tegra/tegra124/Makefile index c00de6151e..d275dafdc4 100644 --- a/arch/arm/mach-tegra/tegra124/Makefile +++ b/arch/arm/mach-tegra/tegra124/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_SPL_BUILD) += cpu.o obj-y += clock.o obj-y += funcmux.o obj-y += pinmux.o +obj-y += pmc.o obj-y += xusb-padctl.o obj-y += ../xusb-padctl-common.o
diff --git a/arch/arm/mach-tegra/tegra124/pmc.c b/arch/arm/mach-tegra/tegra124/pmc.c new file mode 100644 index 0000000000..be82acf11e --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/pmc.c @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2017 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <syscon.h> + +static const struct udevice_id tegra124_syscon_ids[] = { + { .compatible = "nvidia,tegra124-pmc", .data = TEGRA_SYSCON_PMC }, +}; + +U_BOOT_DRIVER(syscon_tegra124) = { + .name = "tegra124_syscon", + .id = UCLASS_SYSCON, + .of_match = tegra124_syscon_ids, +}; diff --git a/configs/nyan-big_defconfig b/configs/nyan-big_defconfig index 8345aea27b..22769bdc93 100644 --- a/configs/nyan-big_defconfig +++ b/configs/nyan-big_defconfig @@ -34,6 +34,8 @@ CONFIG_CMD_EXT4_WRITE=y # CONFIG_SPL_ISO_PARTITION is not set # CONFIG_SPL_EFI_PARTITION is not set CONFIG_SPL_DM=y +CONFIG_REGMAP=y +CONFIG_SYSCON=y CONFIG_DFU_MMC=y CONFIG_DFU_RAM=y CONFIG_DFU_SF=y