From mboxrd@z Thu Jan 1 00:00:00 1970 From: Murali Karicheri Subject: [PATCH v2 2/2] PCI: update dma configuration from DT Date: Wed, 24 Dec 2014 17:11:39 -0500 Message-ID: <1419459099-6667-3-git-send-email-m-karicheri2@ti.com> References: <1419459099-6667-1-git-send-email-m-karicheri2@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1419459099-6667-1-git-send-email-m-karicheri2-l0cyMroinI0@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Murali Karicheri List-Id: devicetree@vger.kernel.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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html