From: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: balbi-l0cyMroinI0@public.gmane.org,
shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
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Cc: alexander.shishkin-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
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Subject: [PATCH v8 03/12] usb: phy-mxs: Add auto clock and power setting
Date: Tue, 24 Dec 2013 11:58:47 +0800 [thread overview]
Message-ID: <1387857536-4996-4-git-send-email-peter.chen@freescale.com> (raw)
In-Reply-To: <1387857536-4996-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
The auto setting is used to open related power and clocks
automatically after receiving wakeup signal.
With this feature, the PHY's clock and power can be recovered
correctly from low power mode, it is guaranteed by IC logic.
Signed-off-by: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
---
drivers/usb/phy/phy-mxs-usb.c | 20 +++++++++++++++++---
1 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 6d49040..0c6f3bc 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -31,6 +31,11 @@
#define BM_USBPHY_CTRL_SFTRST BIT(31)
#define BM_USBPHY_CTRL_CLKGATE BIT(30)
+#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26)
+#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE BIT(25)
+#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD BIT(20)
+#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE BIT(19)
+#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL BIT(18)
#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15)
#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
@@ -96,9 +101,18 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
/* Power up the PHY */
writel(0, base + HW_USBPHY_PWD);
- /* enable FS/LS device */
- writel(BM_USBPHY_CTRL_ENUTMILEVEL2 |
- BM_USBPHY_CTRL_ENUTMILEVEL3,
+ /*
+ * USB PHY Ctrl Setting
+ * - Auto clock/power on
+ * - Enable full/low speed support
+ */
+ writel(BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
+ BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
+ BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
+ BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
+ BM_USBPHY_CTRL_ENAUTO_PWRON_PLL |
+ BM_USBPHY_CTRL_ENUTMILEVEL2 |
+ BM_USBPHY_CTRL_ENUTMILEVEL3,
base + HW_USBPHY_CTRL_SET);
return 0;
--
1.7.8
--
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next prev parent reply other threads:[~2013-12-24 3:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-24 3:58 [PATCH v8 00/12] Add power management support for mxs phy Peter Chen
[not found] ` <1387857536-4996-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2013-12-24 3:58 ` [PATCH v8 01/12] usb: doc: phy-mxs: Add more compatible strings Peter Chen
2013-12-24 3:58 ` [PATCH v8 02/12] usb: phy-mxs: Add platform judgement code Peter Chen
2013-12-24 3:58 ` Peter Chen [this message]
2013-12-24 3:58 ` [PATCH v8 04/12] usb: doc: phy-mxs: update binding for adding anatop phandle Peter Chen
2013-12-24 3:58 ` [PATCH v8 06/12] usb: phy-mxs: change description of usb device speed Peter Chen
2013-12-24 3:58 ` [PATCH v8 08/12] usb: phy-mxs: add controller id Peter Chen
2013-12-24 3:58 ` [PATCH v8 10/12] usb: phy-mxs: Add implementation of set_wakeup Peter Chen
2013-12-24 3:58 ` [PATCH v8 12/12] usb: phy-mxs: Add sync time after controller clear phcd Peter Chen
2013-12-24 3:58 ` [PATCH v8 05/12] usb: phy-mxs: Add anatop regmap Peter Chen
2013-12-24 3:58 ` [PATCH v8 07/12] usb: phy-mxs: Enable IC fixes for related SoCs Peter Chen
2013-12-24 3:58 ` [PATCH v8 09/12] usb: phy: Add set_wakeup API Peter Chen
2013-12-24 3:58 ` [PATCH v8 11/12] usb: phy-mxs: Add system suspend/resume API Peter Chen
[not found] ` <1387857536-4996-12-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2013-12-26 16:25 ` Felipe Balbi
2013-12-27 1:48 ` Peter Chen
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