x86: link: Add PCH driver to support SPI Flash
U-Boot on coreboot does not have a driver for the PCH so cannot see the
SPI peripheral now that it has moved inside the PCH. Add a simple driver so
that SPI flash works again.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/coreboot/pci.c b/arch/x86/cpu/coreboot/pci.c
index fa415dd..67eb14c 100644
--- a/arch/x86/cpu/coreboot/pci.c
+++ b/arch/x86/cpu/coreboot/pci.c
@@ -34,3 +34,14 @@
.of_match = pci_x86_ids,
.ops = &pci_x86_ops,
};
+
+static const struct udevice_id generic_pch_ids[] = {
+ { .compatible = "intel,pch" },
+ { }
+};
+
+U_BOOT_DRIVER(generic_pch_drv) = {
+ .name = "pch",
+ .id = UCLASS_PCH,
+ .of_match = generic_pch_ids,
+};
diff --git a/arch/x86/dts/chromebook_link.dts b/arch/x86/dts/chromebook_link.dts
index b450c3c..7c7034c 100644
--- a/arch/x86/dts/chromebook_link.dts
+++ b/arch/x86/dts/chromebook_link.dts
@@ -181,7 +181,7 @@
pch {
reg = <0x0000f800 0 0 0 0>;
- compatible = "intel,bd82x6x";
+ compatible = "intel,bd82x6x", "intel,pch";
u-boot,dm-pre-reloc;
#address-cells = <1>;
#size-cells = <1>;