Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-08 10:39:08 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

dm: x86: Add a uclass for an Low Pin Count (LPC) device

Browse source 
On x86 systems this device is commonly used to provide legacy port access.
It is sort-of a replacement for the old ISA bus.

Add a uclass for this, and allow it to have child devices.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-03-26 09:29:28 -06:00
parent 452f548753
commit a274e9cac5
3 changed files with 30 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

28
arch/x86/lib/lpc-uclass.c Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <dm/root.h>
static int lpc_uclass_post_bind(struct udevice *bus)
{
/*
* Scan the device tree for devices
*
* Before relocation, only bind devices marked for pre-relocation
* use.
*/
return dm_scan_fdt_node(bus, gd->fdt_blob, bus->of_offset,
gd->flags & GD_FLG_RELOC ? false : true);
}
UCLASS_DRIVER(lpc) = {
.id = UCLASS_LPC,
.name = "lpc",
.post_bind = lpc_uclass_post_bind,
};