diff options
| -rw-r--r-- | drivers/misc/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/misc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/tegra_car.c | 68 |
3 files changed, 76 insertions, 0 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 8990489835..1aae4bcd07 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -129,6 +129,13 @@ config PCA9551_I2C_ADDR help The I2C address of the PCA9551 LED controller. +config TEGRA_CAR + bool "Enable support for the Tegra CAR driver" + depends on TEGRA_NO_BPMP + help + The Tegra CAR (Clock and Reset Controller) is a HW module that + controls almost all clocks and resets in a Tegra SoC. + config TEGRA186_BPMP bool "Enable support for the Tegra186 BPMP driver" depends on TEGRA186 diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index e4f246465a..9fbb5a7880 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_SANDBOX) += spltest_sandbox.o endif endif obj-$(CONFIG_SANDBOX) += syscon_sandbox.o +obj-$(CONFIG_TEGRA_CAR) += tegra_car.o obj-$(CONFIG_TEGRA186_BPMP) += tegra186_bpmp.o obj-$(CONFIG_TWL4030_LED) += twl4030_led.o obj-$(CONFIG_FSL_IFC) += fsl_ifc.o diff --git a/drivers/misc/tegra_car.c b/drivers/misc/tegra_car.c new file mode 100644 index 0000000000..0eb009657c --- /dev/null +++ b/drivers/misc/tegra_car.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <dm/lists.h> +#include <dm/root.h> + +/** + * The CAR exposes multiple different services. We create a sub-device for + * each separate type of service, since each device must be of the appropriate + * UCLASS. + */ +static int tegra_car_bpmp_bind(struct udevice *dev) +{ + int ret; + struct udevice *child; + + debug("%s(dev=%p)\n", __func__, dev); + + ret = device_bind_driver_to_node(dev, "tegra_car_clk", "tegra_car_clk", + dev->of_offset, &child); + if (ret) + return ret; + + ret = device_bind_driver_to_node(dev, "tegra_car_reset", + "tegra_car_reset", dev->of_offset, + &child); + if (ret) + return ret; + + return 0; +} + +static int tegra_car_bpmp_probe(struct udevice *dev) +{ + debug("%s(dev=%p)\n", __func__, dev); + + return 0; +} + +static int tegra_car_bpmp_remove(struct udevice *dev) +{ + debug("%s(dev=%p)\n", __func__, dev); + + return 0; +} + +static const struct udevice_id tegra_car_bpmp_ids[] = { + { .compatible = "nvidia,tegra20-car" }, + { .compatible = "nvidia,tegra30-car" }, + { .compatible = "nvidia,tegra114-car" }, + { .compatible = "nvidia,tegra124-car" }, + { .compatible = "nvidia,tegra210-car" }, + { } +}; + +U_BOOT_DRIVER(tegra_car_bpmp) = { + .name = "tegra_car", + .id = UCLASS_MISC, + .of_match = tegra_car_bpmp_ids, + .bind = tegra_car_bpmp_bind, + .probe = tegra_car_bpmp_probe, + .remove = tegra_car_bpmp_remove, +}; |