[ARM] mv78xx0: distinguish between different chip steppings

During boot, identify which chip stepping we're running on (determined
by looking at the first PCIe unit's device ID and revision registers),
and print a message with the details about what we found.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index aad3a7a2f830..a560439dcc3c 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -33,6 +33,12 @@ static struct resource pcie_io_space;
 static struct resource pcie_mem_space;
 
 
+void __init mv78xx0_pcie_id(u32 *dev, u32 *rev)
+{
+        *dev = orion_pcie_dev_id((void __iomem *)PCIE00_VIRT_BASE);
+        *rev = orion_pcie_rev((void __iomem *)PCIE00_VIRT_BASE);
+}
+
 static void __init mv78xx0_pcie_preinit(void)
 {
         int i;