diff options
| author | Stephen Warren <swarren@nvidia.com> | 2013-01-23 01:06:32 +0100 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2013-01-28 19:20:06 +0100 |
| commit | 9304512151b0933c454f0842cdb19bec23422bc5 (patch) | |
| tree | 56c6cc8e8cd4a0dfca2509647241a188ada8811a /drivers/usb/host/ehci-tegra.c | |
| parent | usb: add APIs to access host registers from Tegra PHY (diff) | |
| download | linux-9304512151b0933c454f0842cdb19bec23422bc5.tar.xz linux-9304512151b0933c454f0842cdb19bec23422bc5.zip | |
usb: host: tegra: don't touch EMC clock
Clock "emc" is for the External Memory Controller. The USB driver has no
business touching this clock directly. Remove the code that does so.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/usb/host/ehci-tegra.c')
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 1f596fb7cf71..b02622a936c2 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -44,7 +44,6 @@ struct tegra_ehci_hcd { struct ehci_hcd *ehci; struct tegra_usb_phy *phy; struct clk *clk; - struct clk *emc_clk; struct usb_phy *transceiver; int host_resumed; int port_resuming; @@ -56,7 +55,6 @@ static void tegra_ehci_power_up(struct usb_hcd *hcd) { struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - clk_prepare_enable(tegra->emc_clk); clk_prepare_enable(tegra->clk); usb_phy_set_suspend(&tegra->phy->u_phy, 0); tegra->host_resumed = 1; @@ -69,7 +67,6 @@ static void tegra_ehci_power_down(struct usb_hcd *hcd) tegra->host_resumed = 0; usb_phy_set_suspend(&tegra->phy->u_phy, 1); clk_disable_unprepare(tegra->clk); - clk_disable_unprepare(tegra->emc_clk); } static int tegra_ehci_internal_port_reset( @@ -694,16 +691,6 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (err) goto fail_clk; - tegra->emc_clk = devm_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_prepare_enable(tegra->emc_clk); - clk_set_rate(tegra->emc_clk, 400000000); - tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node, "nvidia,needs-double-reset"); @@ -813,8 +800,6 @@ fail: #endif usb_phy_shutdown(&tegra->phy->u_phy); fail_io: - clk_disable_unprepare(tegra->emc_clk); -fail_emc_clk: clk_disable_unprepare(tegra->clk); fail_clk: usb_put_hcd(hcd); @@ -842,8 +827,6 @@ static int tegra_ehci_remove(struct platform_device *pdev) clk_disable_unprepare(tegra->clk); - clk_disable_unprepare(tegra->emc_clk); - return 0; } |