Hi,
On Monday, 7 September 2015, Mugunthan V N mugunthanvnm@ti.com wrote:
On Friday 07 August 2015 03:01 AM, Stephen Warren wrote:
From: Stephen Warren swarren@nvidia.com
fdtdec_get_addr_size() hard-codes the number of cells used to represent an address or size in DT. This is incorrect in many cases depending on the DT binding for a particular node or property (e.g. it is incorrect for the "reg" property). In most cases, DT parsing code must use the properties #address-cells and #size-cells to parse addres properties.
This change splits up the implementation of fdtdec_get_addr_size() so that the core logic can be used for both hard-coded and non-hard-coded cases. Various wrapper functions are implemented that support cases where hard-coded cell counts should or should not be used, and where the client does and doesn't know the parent node ID that contains the properties #address-cells and #size-cells.
dev_get_addr() is updated to use the new functions.
Core functionality in fdtdec_get_addr_size_fixed() is widely tested via fdtdec_get_addr_size(). I tested fdtdec_get_addr_size_auto_noparent() and dev_get_addr() by manually modifying the Tegra I2C driver to invoke them.
Much of the core implementation of fdtdec_get_addr_size_fixed(), fdtdec_get_addr_size_auto_parent(), and fdtdec_get_addr_size_auto_noparent() comes from Thierry Reding's previous commit "fdt: Fix fdtdec_get_addr_size() for 64-bit".
Tested this patch for cpsw ethernet dt migration to getting cpsw address space. Also dropped *#define DEBUG* in lib/fdtdev.c file.
Tested-by: Mugunthan V N mugunthanvnm@ti.com
Thanks for testing this. I would like to apply this - are there any other comments?
Regards, Simon