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path: root/drivers/usb/host/ehci-orion.c
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Diffstat (limited to 'drivers/usb/host/ehci-orion.c')
-rw-r--r--drivers/usb/host/ehci-orion.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 6c47ab0a49..ad145a54ca 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -66,6 +66,15 @@ struct orion_ehci_hcd {
static struct hc_driver __read_mostly ehci_orion_hc_driver;
/*
+ * Legacy DMA mask is 32 bit.
+ * AC5 has the DDR starting at 8GB, hence it requires
+ * a larger (34-bit) DMA mask, in order for DMA allocations
+ * to succeed:
+ */
+static const u64 dma_mask_orion = DMA_BIT_MASK(32);
+static const u64 dma_mask_ac5 = DMA_BIT_MASK(34);
+
+/*
* Implement Orion USB controller specification guidelines
*/
static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
@@ -211,6 +220,7 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
int irq, err;
enum orion_ehci_phy_ver phy_version;
struct orion_ehci_hcd *priv;
+ u64 *dma_mask_ptr;
if (usb_disabled())
return -ENODEV;
@@ -228,7 +238,8 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
* set. Since shared usb code relies on it, set it here for
* now. Once we have dma capability bindings this can go away.
*/
- err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ dma_mask_ptr = (u64 *)of_device_get_match_data(&pdev->dev);
+ err = dma_coerce_mask_and_coherent(&pdev->dev, *dma_mask_ptr);
if (err)
goto err;
@@ -332,8 +343,9 @@ static void ehci_orion_drv_remove(struct platform_device *pdev)
}
static const struct of_device_id ehci_orion_dt_ids[] = {
- { .compatible = "marvell,orion-ehci", },
- { .compatible = "marvell,armada-3700-ehci", },
+ { .compatible = "marvell,orion-ehci", .data = &dma_mask_orion},
+ { .compatible = "marvell,armada-3700-ehci", .data = &dma_mask_orion},
+ { .compatible = "marvell,ac5-ehci", .data = &dma_mask_ac5},
{},
};
MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);