x86: ivybridge: Set up the LPC device using driver model
Find the LPC device in arch_cpu_init_dm() as a first step to converting
this code to use driver model. Probing the LPC will probe its parent (the
PCH) automatically, so make sure that probing the PCH does nothing before
relocation.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c
index 343bfb4..6ffc843 100644
--- a/arch/x86/cpu/ivybridge/cpu.c
+++ b/arch/x86/cpu/ivybridge/cpu.c
@@ -126,7 +126,7 @@
{
const void *blob = gd->fdt_blob;
struct pci_controller *hose;
- struct udevice *bus;
+ struct udevice *bus, *dev;
int node;
int ret;
@@ -141,6 +141,10 @@
/* TODO(sjg@chromium.org): Get rid of gd->hose */
gd->hose = hose;
+ ret = uclass_first_device(UCLASS_LPC, &dev);
+ if (!dev)
+ return -ENODEV;
+
node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_PCH);
if (node < 0)
return -ENOENT;