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dm: core: Add support for simple-bus
Add a driver for the simple-bus nodes, which allows devices within these nodes to be bound. Signed-off-by: Simon Glass <sjg@chromium.org>
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3 changed files with 35 additions and 0 deletions
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@ -5,3 +5,4 @@
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#
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obj-y := device.o lists.o root.o uclass.o util.o
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obj-$(CONFIG_OF_CONTROL) += simple-bus.o
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33
drivers/core/simple-bus.c
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33
drivers/core/simple-bus.c
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@ -0,0 +1,33 @@
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/*
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* Copyright (c) 2014 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/root.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int simple_bus_post_bind(struct udevice *dev)
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{
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return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
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}
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UCLASS_DRIVER(simple_bus) = {
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.id = UCLASS_SIMPLE_BUS,
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.name = "simple_bus",
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.post_bind = simple_bus_post_bind,
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};
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static const struct udevice_id generic_simple_bus_ids[] = {
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{ .compatible = "simple-bus" },
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{ }
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};
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U_BOOT_DRIVER(simple_bus_drv) = {
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.name = "generic_simple_bus",
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.id = UCLASS_SIMPLE_BUS,
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.of_match = generic_simple_bus_ids,
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};
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@ -19,6 +19,7 @@ enum uclass_id {
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UCLASS_TEST_FDT,
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UCLASS_TEST_BUS,
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UCLASS_SPI_EMUL, /* sandbox SPI device emulator */
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UCLASS_SIMPLE_BUS,
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/* U-Boot uclasses start here */
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UCLASS_GPIO, /* Bank of general-purpose I/O pins */
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