From mboxrd@z Thu Jan 1 00:00:00 1970 From: m-karicheri2@ti.com (Murali Karicheri) Date: Wed, 24 Dec 2014 17:11:39 -0500 Subject: [PATCH v2 2/2] PCI: update dma configuration from DT In-Reply-To: <1419459099-6667-1-git-send-email-m-karicheri2@ti.com> References: <1419459099-6667-1-git-send-email-m-karicheri2@ti.com> Message-ID: <1419459099-6667-3-git-send-email-m-karicheri2@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org If there is a DT node available for the root bridge's parent device, use the dma configuration from that device node. For example, keystone PCI devices would require dma_pfn_offset to be set correctly in the device structure of the pci device in order to have the correct dma mask. The DT node will have dma-ranges defined for this. Also support using the DT property dma-coherent to allow coherent DMA operation by the PCI device. This patch use the new helper function of_pci_dma_configure() to update the device dma configuration. Signed-off-by: Murali Karicheri --- drivers/pci/probe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 23212f8..d7dcd6c 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -1520,6 +1521,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) dev->dev.dma_mask = &dev->dma_mask; dev->dev.dma_parms = &dev->dma_parms; dev->dev.coherent_dma_mask = 0xffffffffull; + of_pci_dma_configure(dev); pci_set_dma_max_seg_size(dev, 65536); pci_set_dma_seg_boundary(dev, 0xffffffff); -- 1.7.9.5