On 12/07/2012 02:17 PM, Grant Likely wrote:
On Thu, 6 Dec 2012 15:23:14 +0100, Michal Simek <michal.simek@xxxxxxxxxx> wrote:
Hi guys,
I have a question regarding to sharing generic OF pcie driver between
two architectures MB and ARM Zynq.
Is drivers/pci/pcie location good for it?
Make no sense to have the same driver in two locations.
Is using readl/writel IO functions in this driver the best option
which we can have?
Or is there any other recommendation?
Grant: What do you think about readl/iowrite usage in connection to PCI?
Also just want to check if it is correct to use pcie device_type.
The rest should be the same with pci description:
(http://devicetree.org/MPC5200:PCI#PCI_Address_Translation).
Yes. device_type may be deprecated, but the PCI binding predates that.
If it is deprecated, there could be probably problem with early_init_dt_scan_memory()
which is checking memory device_type (drivers/of/fdt.c).
PowerPC uses pcie in the device type. arch/powerpc/kernel/of_platform.c
ok. I see.
Some of that powerpc DT PCI support code really should be made generic.
yep.
Thanks,
Michal
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
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