leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

usb: chipidea: imx: Disable internal 60Mhz clock with ULPI PHY

Browse Source 
The internal 60Mhz clock for host2 and host3 are useless in ULPI
phy mode, so we disable it when configuring ULPI PHY node for
those host.

Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Fabien Lahoudere 2016-09-26 13:14:20 +02:00 committed by Peter Chen
parent d13631bb15
commit 3be3251db0
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/usb/chipidea/usbmisc_imx.c
View File

@ -53,6 +53,9 @@
#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
#define MX53_USB_UH2_CTRL_OFFSET 0x14
#define MX53_USB_UH3_CTRL_OFFSET 0x18
#define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24
#define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
#define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
@ -239,6 +242,10 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
| MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg);
/* Disable internal 60Mhz clock */
reg = usbmisc->base + MX53_USB_CLKONOFF_CTRL_OFFSET;
val = readl(reg) | MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
writel(val, reg);
}
if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
@ -260,6 +267,10 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
| MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg);
/* Disable internal 60Mhz clock */
reg = usbmisc->base + MX53_USB_CLKONOFF_CTRL_OFFSET;
val = readl(reg) | MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
writel(val, reg);
}
if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;