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Subject[RFC v1 PATCH 0/2] PCI: get DMA configuration from parent device
Date
PCI devices on Keystone doesn't have correct dma_pfn_offset set. This patch
add capability to set the dma configuration such as dma-mask, dma_pfn_offset,
and dma ops etc using the same information from DT. The prior RFCs and
discussions are available at [1] and [2] below.

This patch make use of a recent dma API addeded to latest master and I could
only compile this as the latest kernel doesn't boot up on Keystone platforms.
So I am continue to send RFC version so that this gets a wider review before
sending the formal patch.

[2] : https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg790244.html
[1] : http://www.gossamer-threads.com/lists/linux/kernel/2024591

Change history:
v1 - updates based on the comments against initial RFC.
- Added a helper function to get the OF node of the parent
- Added an API in of_pci.c to update DMA configuration of the pci
device.

Murali Karicheri (2):
of/pci: add of_pci_dma_configure() update dma configuration
PCI: update dma configuration from DT

drivers/of/of_pci.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/pci/probe.c | 2 ++
include/linux/of_pci.h | 12 ++++++++
3 files changed, 85 insertions(+)

--
1.7.9.5



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