diff options
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 597c0a2a911e..5e14bfbe148c 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -50,6 +50,7 @@ struct tegra_ehci_hcd { struct ehci_hcd *ehci; struct tegra_usb_phy *phy; struct clk *clk; + struct clk *emc_clk; struct otg_transceiver *transceiver; int host_resumed; int bus_suspended; @@ -62,6 +63,7 @@ static void tegra_ehci_power_up(struct usb_hcd *hcd) { struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); + clk_enable(tegra->emc_clk); clk_enable(tegra->clk); tegra_usb_phy_power_on(tegra->phy); tegra->host_resumed = 1; @@ -74,6 +76,7 @@ static void tegra_ehci_power_down(struct usb_hcd *hcd) tegra->host_resumed = 0; tegra_usb_phy_power_off(tegra->phy); clk_disable(tegra->clk); + clk_disable(tegra->emc_clk); } static int tegra_ehci_hub_control( @@ -634,6 +637,16 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (err) goto fail_clken; + tegra->emc_clk = clk_get(&pdev->dev, "emc"); + if (IS_ERR(tegra->emc_clk)) { + dev_err(&pdev->dev, "Can't get emc clock\n"); + err = PTR_ERR(tegra->emc_clk); + goto fail_emc_clk; + } + + clk_enable(tegra->emc_clk); + clk_set_rate(tegra->emc_clk, 240000000); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "Failed to get I/O memory\n"); @@ -708,6 +721,9 @@ fail: fail_phy: iounmap(hcd->regs); fail_io: + clk_disable(tegra->emc_clk); + clk_put(tegra->emc_clk); +fail_emc_clk: clk_disable(tegra->clk); fail_clken: clk_put(tegra->clk); @@ -772,6 +788,9 @@ static int tegra_ehci_remove(struct platform_device *pdev) clk_disable(tegra->clk); clk_put(tegra->clk); + clk_disable(tegra->emc_clk); + clk_put(tegra->emc_clk); + kfree(tegra); return 0; } |