diff --git a/kernel/driver/serial/uart8250/src/fdt.rs b/kernel/driver/serial/uart8250/src/fdt.rs
index a8a85d21..4e63b70b 100644
--- a/kernel/driver/serial/uart8250/src/fdt.rs
+++ b/kernel/driver/serial/uart8250/src/fdt.rs
@@ -135,12 +135,14 @@ impl Config for Fdt8250Config {
 
 impl Fdt8250Config {
     fn from_device_tree(node: &Arc<Node>, context: &mut ProbeContext) -> Option<(Self, Vendor)> {
-        let vendor = if node.is_compatible("snps,dw-apb-uart") {
-            Vendor::DwApbUart
+        let (vendor, reg_io_width, reg_shift) = if node.is_compatible("snps,dw-apb-uart") {
+            (Vendor::DwApbUart, 1, 0)
         } else if node.is_compatible("ns16550a") {
-            Vendor::Generic16550
+            (Vendor::Generic16550, 1, 0)
+        } else if node.is_compatible("brcm,bcm2835-aux-uart") {
+            (Vendor::Generic8250, 4, 2)
         } else {
-            Vendor::Generic8250
+            (Vendor::Generic8250, 1, 0)
         };
 
         let base = node.map_base(context, 0)?;
@@ -155,9 +157,9 @@ impl Fdt8250Config {
             clk_baud = node.clock(0);
         }
 
-        let reg_io_width = node.prop_usize("reg-io-width").unwrap_or(4);
+        let reg_io_width = node.prop_usize("reg-io-width").unwrap_or(reg_io_width);
+        let reg_shift = node.prop_usize("reg-shift").unwrap_or(reg_shift);
         let reg_offset = node.prop_usize("reg-offset").unwrap_or(0);
-        let reg_shift = node.prop_usize("reg-shift").unwrap_or(2);
 
         Some((
             Self {