soc/amd/stoneyridge: use is_dev_enabled(DEV_PTR())

Since we have chipset devicetrees for both SoCs supported by the
Stoneyridge code, we can use the DEV_PTR macro instead of using
pcidev_path_on_root to get the device struct pointer. We can also use
the is_dev_enabled function instead of checking the value of the enabled
element of the device struct directly.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ifb787750ebc6aa2fef9d3be0e84e6afcffdc2ac1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79671
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c
index ef53b2ed3b..bf2f992e33 100644
--- a/src/soc/amd/stoneyridge/northbridge.c
+++ b/src/soc/amd/stoneyridge/northbridge.c
@@ -322,8 +322,7 @@ __weak void set_board_env_params(GNB_ENV_CONFIGURATION *params) { }
 
 void SetNbEnvParams(GNB_ENV_CONFIGURATION *params)
 {
-	const struct device *dev = SOC_IOMMU_DEV;
-	params->IommuSupport = dev && dev->enabled;
+	params->IommuSupport = is_dev_enabled(DEV_PTR(iommu));
 	set_board_env_params(params);
 }