From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SkDBI-00077u-OJ for barebox@lists.infradead.org; Thu, 28 Jun 2012 11:46:41 +0000 From: Sascha Hauer Date: Thu, 28 Jun 2012 13:46:37 +0200 Message-Id: <1340883997-2107-2-git-send-email-s.hauer@pengutronix.de> In-Reply-To: <1340883997-2107-1-git-send-email-s.hauer@pengutronix.de> References: <1340883997-2107-1-git-send-email-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 2/2] ARM i.MX28 usb: Add USBPHY support To: barebox@lists.infradead.org Signed-off-by: Sascha Hauer --- arch/arm/mach-mxs/Makefile | 2 +- arch/arm/mach-mxs/include/mach/imx28-regs.h | 5 ++ arch/arm/mach-mxs/include/mach/usb.h | 3 + arch/arm/mach-mxs/usb-imx28.c | 101 +++++++++++++++++++++++++++ 4 files changed, 110 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-mxs/usb-imx28.c diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile index 1ba00f1..e8de370 100644 --- a/arch/arm/mach-mxs/Makefile +++ b/arch/arm/mach-mxs/Makefile @@ -1,5 +1,5 @@ obj-y += imx.o iomux-imx.o reset-imx.o obj-$(CONFIG_DRIVER_VIDEO_STM) += imx_lcd_clk.o obj-$(CONFIG_ARCH_IMX23) += speed-imx23.o clocksource-imx23.o usb-imx23.o -obj-$(CONFIG_ARCH_IMX28) += speed-imx28.o clocksource-imx28.o +obj-$(CONFIG_ARCH_IMX28) += speed-imx28.o clocksource-imx28.o usb-imx28.o obj-$(CONFIG_MXS_OCOTP) += ocotp.o diff --git a/arch/arm/mach-mxs/include/mach/imx28-regs.h b/arch/arm/mach-mxs/include/mach/imx28-regs.h index 9a2052c..900990a 100644 --- a/arch/arm/mach-mxs/include/mach/imx28-regs.h +++ b/arch/arm/mach-mxs/include/mach/imx28-regs.h @@ -29,9 +29,11 @@ #define IMX_SSP2_BASE 0x80014000 #define IMX_SSP3_BASE 0x80016000 #define IMX_IOMUXC_BASE 0x80018000 +#define IMX_DIGCTL_BASE 0x8001c000 #define IMX_OCOTP_BASE 0x8002c000 #define IMX_FB_BASE 0x80030000 #define IMX_CCM_BASE 0x80040000 +#define IMX_POWER_BASE 0x80044000 #define IMX_WDT_BASE 0x80056000 #define IMX_I2C0_BASE 0x80058000 #define IMX_I2C1_BASE 0x8005a000 @@ -42,6 +44,9 @@ #define IMX_UART3_BASE 0x80070000 #define IMX_UART4_BASE 0x80072000 #define IMX_DBGUART_BASE 0x80074000 +#define IMX_USBPHY0_BASE 0x8007c000 +#define IMX_USBPHY1_BASE 0x8007e000 +#define IMX_USB_BASE 0x80080000 #define IMX_FEC0_BASE 0x800F0000 #define IMX_FEC1_BASE 0x800F4000 diff --git a/arch/arm/mach-mxs/include/mach/usb.h b/arch/arm/mach-mxs/include/mach/usb.h index b238499..2d31b0d 100644 --- a/arch/arm/mach-mxs/include/mach/usb.h +++ b/arch/arm/mach-mxs/include/mach/usb.h @@ -3,4 +3,7 @@ int imx23_usb_phy_enable(void); +int imx28_usb_phy0_enable(void); +int imx28_usb_phy1_enable(void); + #endif /* __MACH_USB_H */ diff --git a/arch/arm/mach-mxs/usb-imx28.c b/arch/arm/mach-mxs/usb-imx28.c new file mode 100644 index 0000000..61d59c3 --- /dev/null +++ b/arch/arm/mach-mxs/usb-imx28.c @@ -0,0 +1,101 @@ +/* + * i.MX28 USBPHY setup + * + * Copyright 2011 Sascha Hauer, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include +#include +#include +#include + +#define POWER_CTRL (IMX_POWER_BASE + 0x0) +#define POWER_CTRL_CLKGATE 0x40000000 + +#define POWER_STS (IMX_POWER_BASE + 0xc0) +#define POWER_STS_VBUSVALID 0x00000002 +#define POWER_STS_BVALID 0x00000004 +#define POWER_STS_AVALID 0x00000008 + +#define POWER_DEBUG (IMX_POWER_BASE + 0x110) +#define POWER_DEBUG_BVALIDPIOLOCK 0x00000002 +#define POWER_DEBUG_AVALIDPIOLOCK 0x00000004 +#define POWER_DEBUG_VBUSVALIDPIOLOCK 0x00000008 + +#define USBPHY_PWD 0x0 + +#define USBPHY_CTRL 0x30 +#define USBPHY_CTRL_SFTRST (1 << 31) +#define USBPHY_CTRL_CLKGATE (1 << 30) +#define USBPHY_CTRL_ENUTMILEVEL3 (1 << 15) +#define USBPHY_CTRL_ENUTMILEVEL2 (1 << 14) + +#define CLK_PLL0CTRL0 (IMX_CCM_BASE + 0x0) +#define CLK_PLL1CTRL0 (IMX_CCM_BASE + 0x20) +#define PLLCTRL0_EN_USB_CLKS (1 << 18) + +#define DIGCTRL_CTRL (IMX_DIGCTL_BASE + 0x0) +#define DIGCTL_CTRL_USB0_CLKGATE (1 << 2) +#define DIGCTL_CTRL_USB1_CLKGATE (1 << 16) + +#define SET 0x4 +#define CLR 0x8 + +static void imx28_usb_phy_reset(void __iomem *phybase) +{ + /* Reset USBPHY module */ + writel(USBPHY_CTRL_SFTRST, phybase + USBPHY_CTRL + SET); + udelay(10); + writel(USBPHY_CTRL_CLKGATE | USBPHY_CTRL_SFTRST, + phybase + USBPHY_CTRL + CLR); +} + +static void imx28_usb_phy_enable(void __iomem *phybase) +{ + /* Power up the PHY */ + writel(0, phybase + USBPHY_PWD); + + writel(USBPHY_CTRL_ENUTMILEVEL3 | USBPHY_CTRL_ENUTMILEVEL2 | 1, + phybase + USBPHY_CTRL + SET); +} + +int imx28_usb_phy0_enable(void) +{ + imx28_usb_phy_reset((void *)IMX_USBPHY0_BASE); + + /* Turn on the USB clocks */ + writel(PLLCTRL0_EN_USB_CLKS, CLK_PLL0CTRL0 + SET); + + writel(DIGCTL_CTRL_USB0_CLKGATE, DIGCTRL_CTRL + CLR); + + imx28_usb_phy_enable((void *)IMX_USBPHY0_BASE); + + return 0; +} + +int imx28_usb_phy1_enable(void) +{ + imx28_usb_phy_reset((void *)IMX_USBPHY1_BASE); + + /* Turn on the USB clocks */ + writel(PLLCTRL0_EN_USB_CLKS, CLK_PLL1CTRL0 + SET); + + writel(DIGCTL_CTRL_USB1_CLKGATE, DIGCTRL_CTRL + CLR); + + imx28_usb_phy_enable((void *)IMX_USBPHY1_BASE); + + return 0; +} -- 1.7.10 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox