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

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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
repo.diff.show_diff_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_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
#define MX53_USB_UH2_CTRL_OFFSET 0x14 #define MX53_USB_UH2_CTRL_OFFSET 0x14
#define MX53_USB_UH3_CTRL_OFFSET 0x18 #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_H1 BIT(5)
#define MX53_BM_OVER_CUR_DIS_OTG BIT(8) #define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
#define MX53_BM_OVER_CUR_DIS_UHx BIT(30) #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 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
| MX53_USB_UHx_CTRL_ULPI_INT_EN; | MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg); 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) { if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET; 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 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
| MX53_USB_UHx_CTRL_ULPI_INT_EN; | MX53_USB_UHx_CTRL_ULPI_INT_EN;
writel(val, reg); 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) { if (data->disable_oc) {
reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET; reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;