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path: root/drivers/pci/controller/pcie-apple.c
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Diffstat (limited to 'drivers/pci/controller/pcie-apple.c')
-rw-r--r--drivers/pci/controller/pcie-apple.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c
index 8f413509e37da..3646638f3df00 100644
--- a/drivers/pci/controller/pcie-apple.c
+++ b/drivers/pci/controller/pcie-apple.c
@@ -120,8 +120,10 @@
* The doorbell address is set to 0xfffff000, which by convention
* matches what MacOS does, and it is possible to use any other
* address (in the bottom 4GB, as the base register is only 32bit).
+ * However, it has to be excluded from the IOVA range, and the DART
+ * driver has to know about it.
*/
-#define DOORBELL_ADDR 0xfffff000
+#define DOORBELL_ADDR CONFIG_PCIE_APPLE_MSI_DOORBELL_ADDR
struct apple_pcie {
struct mutex lock;