diff options
Diffstat (limited to 'drivers/usb/host/xhci-mtk.c')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index bac961cd24ad..b30806a0d37a 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -212,6 +212,12 @@ static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) { int ret; + ret = clk_prepare_enable(mtk->ref_clk); + if (ret) { + dev_err(mtk->dev, "failed to enable ref_clk\n"); + goto ref_clk_err; + } + ret = clk_prepare_enable(mtk->sys_clk); if (ret) { dev_err(mtk->dev, "failed to enable sys_clk\n"); @@ -238,6 +244,8 @@ usb_p1_err: usb_p0_err: clk_disable_unprepare(mtk->sys_clk); sys_clk_err: + clk_disable_unprepare(mtk->ref_clk); +ref_clk_err: return -EINVAL; } @@ -248,6 +256,7 @@ static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) clk_disable_unprepare(mtk->wk_deb_p0); } clk_disable_unprepare(mtk->sys_clk); + clk_disable_unprepare(mtk->ref_clk); } /* only clocks can be turn off for ip-sleep wakeup mode */ @@ -550,6 +559,12 @@ static int xhci_mtk_probe(struct platform_device *pdev) return PTR_ERR(mtk->sys_clk); } + mtk->ref_clk = devm_clk_get(dev, "ref_ck"); + if (IS_ERR(mtk->ref_clk)) { + dev_err(dev, "fail to get ref_ck\n"); + return PTR_ERR(mtk->ref_clk); + } + mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable"); ret = usb_wakeup_of_property_parse(mtk, node); |