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    Subject[PATCH 5/9] usb: xhci-mtk: remove dummy wakeup debounce clocks
    Date
    The wakeup debounce clocks for each ports in fact are not
    needed, so remove them.

    Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
    ---
    drivers/usb/host/xhci-mtk.c | 33 ---------------------------------
    drivers/usb/host/xhci-mtk.h | 2 --
    2 files changed, 35 deletions(-)

    diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
    index 97ba51e..d60463c 100644
    --- a/drivers/usb/host/xhci-mtk.c
    +++ b/drivers/usb/host/xhci-mtk.c
    @@ -237,25 +237,8 @@ static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk)
    goto sys_clk_err;
    }

    - if (mtk->wakeup_src) {
    - ret = clk_prepare_enable(mtk->wk_deb_p0);
    - if (ret) {
    - dev_err(mtk->dev, "failed to enable wk_deb_p0\n");
    - goto usb_p0_err;
    - }
    -
    - ret = clk_prepare_enable(mtk->wk_deb_p1);
    - if (ret) {
    - dev_err(mtk->dev, "failed to enable wk_deb_p1\n");
    - goto usb_p1_err;
    - }
    - }
    return 0;

    -usb_p1_err:
    - clk_disable_unprepare(mtk->wk_deb_p0);
    -usb_p0_err:
    - clk_disable_unprepare(mtk->sys_clk);
    sys_clk_err:
    clk_disable_unprepare(mtk->ref_clk);
    ref_clk_err:
    @@ -264,10 +247,6 @@ static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk)

    static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk)
    {
    - if (mtk->wakeup_src) {
    - clk_disable_unprepare(mtk->wk_deb_p1);
    - clk_disable_unprepare(mtk->wk_deb_p0);
    - }
    clk_disable_unprepare(mtk->sys_clk);
    clk_disable_unprepare(mtk->ref_clk);
    }
    @@ -371,18 +350,6 @@ static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk,
    if (!mtk->wakeup_src)
    return 0;

    - mtk->wk_deb_p0 = devm_clk_get(dev, "wakeup_deb_p0");
    - if (IS_ERR(mtk->wk_deb_p0)) {
    - dev_err(dev, "fail to get wakeup_deb_p0\n");
    - return PTR_ERR(mtk->wk_deb_p0);
    - }
    -
    - mtk->wk_deb_p1 = devm_clk_get(dev, "wakeup_deb_p1");
    - if (IS_ERR(mtk->wk_deb_p1)) {
    - dev_err(dev, "fail to get wakeup_deb_p1\n");
    - return PTR_ERR(mtk->wk_deb_p1);
    - }
    -
    mtk->pericfg = syscon_regmap_lookup_by_phandle(dn,
    "mediatek,syscon-wakeup");
    if (IS_ERR(mtk->pericfg)) {
    diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
    index db55a12..67783a7 100644
    --- a/drivers/usb/host/xhci-mtk.h
    +++ b/drivers/usb/host/xhci-mtk.h
    @@ -126,8 +126,6 @@ struct xhci_hcd_mtk {
    struct regulator *vbus;
    struct clk *sys_clk; /* sys and mac clock */
    struct clk *ref_clk;
    - struct clk *wk_deb_p0; /* port0's wakeup debounce clock */
    - struct clk *wk_deb_p1;
    struct regmap *pericfg;
    struct phy **phys;
    int num_phys;
    --
    1.7.9.5
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