redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

usb: xhci-mtk: remove dummy wakeup debounce clocks

Browse source 
The wakeup debounce clocks for each ports in fact are not
needed, so remove them.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2017-10-13 16:26:37 +08:00 committed by Greg Kroah-Hartman
parent 55ba6e9e25
commit 603fbd1535
2 changed files with 0 additions and 35 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
drivers/usb/host/xhci-mtk.c
View file

@ -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 @@ ref_clk_err:
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)) {

2
drivers/usb/host/xhci-mtk.h
View file

@ -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;