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x86: ivybridge: Add a driver for the bd82x6x northbridge

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Add a driver with an empty probe function where we can move init code in
follow-on patches.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2016-01-17 16:11:15 -07:00 • committed by Bin Meng
parent 5544757ce9
commit e40a6e3f10
2 changed files with 25 additions and 0 deletions
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18
arch/x86/cpu/ivybridge/early_init.c
View file

@ -8,6 +8,7 @@
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/pci.h>
#include <asm/arch/pch.h>
@ -145,3 +146,20 @@ void sandybridge_early_init(int chipset_type)
sandybridge_setup_graphics(pch_dev, video_dev);
}
static int bd82x6x_northbridge_probe(struct udevice *dev)
{
return 0;
}
static const struct udevice_id bd82x6x_northbridge_ids[] = {
{ .compatible = "intel,bd82x6x-northbridge" },
{ }
};
U_BOOT_DRIVER(bd82x6x_northbridge_drv) = {
.name = "bd82x6x_northbridge",
.id = UCLASS_NORTHBRIDGE,
.of_match = bd82x6x_northbridge_ids,
.probe = bd82x6x_northbridge_probe,
};

7
arch/x86/dts/chromebook_link.dts
View file

@ -166,6 +166,13 @@
ranges = <0x02000000 0x0 0xe0000000 0xe0000000 0 0x10000000
0x42000000 0x0 0xd0000000 0xd0000000 0 0x10000000
0x01000000 0x0 0x1000 0x1000 0 0xefff>;
northbridge@0,0 {
reg = <0x00000000 0 0 0 0>;
compatible = "intel,bd82x6x-northbridge";
u-boot,dm-pre-reloc;
};
sata {
compatible = "intel,pantherpoint-ahci";
intel,sata-mode = "ahci";