On 05/03/2012 10:05 AM, Hiroshi DOYU wrote:

Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced
High-performance Bus (AHB) architecture.

The AHB Arbiter controls AHB bus master arbitration. This effectively
forms a second level of arbitration for access to the memory
controller through the AHB Slave Memory device. The AHB pre-fetch
logic can be configured to enhance performance for devices doing
sequential access. Each AHB master is assigned to either the high or
low priority bin. Both Tegra20/30 have this AHB bus.

Some of configuration param could be passed from DT too.

const?

+static int __init tegra_ahb_module_init(void)
+{
+	return platform_driver_register(&tegra_ahb_driver);
+}
+postcore_initcall(tegra_ahb_module_init);

Can this be a module_init() instead of postcore_initcall()?

+
+static void __exit tegra_ahb_module_exit(void)
+{
+	platform_driver_unregister(&tegra_ahb_driver);
+}
+module_exit(tegra_ahb_module_exit);

If so, all of the previous two quoted chunks can be replaced with just:

module_platform_driver(tegra_ahb_module_init);