TWL4030 Add usb PHY support
The twl4030 provides a PHY device for connecting a link device, like musb, to physical connection. This change adds the twl4030 usb registers and functions for initializing the PHY as required by omap3. Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
This commit is contained in:
Tom Rix
Remy Bohmer
parent
988365a204
commit
bffbb2a86d
1
Makefile
1
Makefile
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@ -243,6 +243,7 @@ LIBS += drivers/twserial/libtws.a
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LIBS += drivers/usb/gadget/libusb_gadget.a
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LIBS += drivers/usb/host/libusb_host.a
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LIBS += drivers/usb/musb/libusb_musb.a
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LIBS += drivers/usb/phy/libusb_phy.a
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LIBS += drivers/video/libvideo.a
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LIBS += drivers/watchdog/libwatchdog.a
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LIBS += common/libcommon.a
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@ -0,0 +1,44 @@
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#
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# Copyright (c) 2009 Wind River Systems, Inc.
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# Tom Rix <Tom.Rix@windriver.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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include $(TOPDIR)/config.mk
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LIB := $(obj)libusb_phy.a
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COBJS-$(CONFIG_TWL4030_USB) += twl4030.o
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COBJS-y := twl4030.o
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COBJS := $(COBJS-y)
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SRCS := $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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all: $(LIB)
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$(LIB): $(obj).depend $(OBJS)
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$(AR) $(ARFLAGS) $@ $(OBJS)
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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@ -0,0 +1,189 @@
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/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* This is file is based on
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* repository git.gitorious.org/u-boot-omap3/mainline.git,
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* branch omap3-dev-usb, file drivers/usb/gadget/twl4030_usb.c
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*
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* This is the unique part of its copyright :
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*
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* ------------------------------------------------------------------------
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*
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* * (C) Copyright 2009 Atin Malaviya (atin.malaviya@gmail.com)
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*
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* Based on: twl4030_usb.c in linux 2.6 (drivers/i2c/chips/twl4030_usb.c)
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* Copyright (C) 2004-2007 Texas Instruments
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* Copyright (C) 2008 Nokia Corporation
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* Contact: Felipe Balbi <felipe.balbi@nokia.com>
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*
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* Author: Atin Malaviya (atin.malaviya@gmail.com)
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*
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* ------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <twl4030.h>
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/* Defines for bits in registers */
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#define OPMODE_MASK (3 << 3)
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#define XCVRSELECT_MASK (3 << 0)
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#define CARKITMODE (1 << 2)
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#define OTG_ENAB (1 << 5)
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#define PHYPWD (1 << 0)
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#define CLOCKGATING_EN (1 << 2)
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#define CLK32K_EN (1 << 1)
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#define REQ_PHY_DPLL_CLK (1 << 0)
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#define PHY_DPLL_CLK (1 << 0)
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static int twl4030_usb_write(u8 address, u8 data)
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{
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int ret;
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ret = twl4030_i2c_write_u8(TWL4030_CHIP_USB, data, address);
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if (ret != 0)
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printf("TWL4030:USB:Write[0x%x] Error %d\n", address, ret);
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return ret;
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}
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static int twl4030_usb_read(u8 address)
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{
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u8 data;
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int ret;
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ret = twl4030_i2c_read_u8(TWL4030_CHIP_USB, &data, address);
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if (ret == 0)
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ret = data;
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else
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printf("TWL4030:USB:Read[0x%x] Error %d\n", address, ret);
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return ret;
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}
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static void twl4030_usb_ldo_init(void)
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{
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/* Enable writing to power configuration registers */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0xC0,
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TWL4030_PM_MASTER_PROTECT_KEY);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x0C,
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TWL4030_PM_MASTER_PROTECT_KEY);
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/* put VUSB3V1 LDO in active state */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
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TWL4030_PM_RECEIVER_VUSB_DEDICATED2);
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/* input to VUSB3V1 LDO is from VBAT, not VBUS */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x14,
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TWL4030_PM_RECEIVER_VUSB_DEDICATED1);
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/* turn on 3.1V regulator */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
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TWL4030_PM_RECEIVER_VUSB3V1_DEV_GRP);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
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TWL4030_PM_RECEIVER_VUSB3V1_TYPE);
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/* turn on 1.5V regulator */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
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TWL4030_PM_RECEIVER_VUSB1V5_DEV_GRP);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
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TWL4030_PM_RECEIVER_VUSB1V5_TYPE);
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/* turn on 1.8V regulator */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
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TWL4030_PM_RECEIVER_VUSB1V8_DEV_GRP);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
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TWL4030_PM_RECEIVER_VUSB1V8_TYPE);
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/* disable access to power configuration registers */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x00,
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TWL4030_PM_MASTER_PROTECT_KEY);
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}
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static void twl4030_phy_power(void)
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{
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u8 pwr, clk;
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/* Power the PHY */
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pwr = twl4030_usb_read(TWL4030_USB_PHY_PWR_CTRL);
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pwr &= ~PHYPWD;
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twl4030_usb_write(TWL4030_USB_PHY_PWR_CTRL, pwr);
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/* Enable clocks */
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clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
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clk |= CLOCKGATING_EN | CLK32K_EN;
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twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
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}
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/*
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* Initiaze the ULPI interface
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* ULPI : Universal Transceiver Macrocell Low Pin Interface
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* An interface between the USB link controller like musb and the
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* the PHY or transceiver that drives the actual bus.
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*/
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int twl4030_usb_ulpi_init(void)
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{
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long timeout = 1000 * 1000; /* 1 sec */;
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u8 clk, sts, pwr;
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/* twl4030 ldo init */
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twl4030_usb_ldo_init();
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/* Enable the twl4030 phy */
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twl4030_phy_power();
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/* Enable DPLL to access PHY registers over I2C */
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clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
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clk |= REQ_PHY_DPLL_CLK;
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twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
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/* Check if the PHY DPLL is locked */
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sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
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while (!(sts & PHY_DPLL_CLK) && 0 < timeout) {
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udelay(10);
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sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
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timeout -= 10;
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}
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/* Final check */
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sts = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL_STS);
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if (!(sts & PHY_DPLL_CLK)) {
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printf("Error:TWL4030:USB Timeout setting PHY DPLL clock\n");
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return -1;
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}
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/*
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* There are two circuit blocks attached to the PHY,
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* Carkit and USB OTG. Disable Carkit and enable USB OTG
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*/
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twl4030_usb_write(TWL4030_USB_IFC_CTRL_CLR, CARKITMODE);
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pwr = twl4030_usb_read(TWL4030_USB_POWER_CTRL);
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pwr |= OTG_ENAB;
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twl4030_usb_write(TWL4030_USB_POWER_CTRL_SET, pwr);
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/* Clear the opmode bits to ensure normal encode */
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twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, OPMODE_MASK);
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/* Clear the xcvrselect bits to enable the high speed transeiver */
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twl4030_usb_write(TWL4030_USB_FUNC_CTRL_CLR, XCVRSELECT_MASK);
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/* Let ULPI control the DPLL clock */
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clk = twl4030_usb_read(TWL4030_USB_PHY_CLK_CTRL);
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clk &= ~REQ_PHY_DPLL_CLK;
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twl4030_usb_write(TWL4030_USB_PHY_CLK_CTRL, clk);
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return 0;
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}
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@ -342,21 +342,129 @@
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#define TWL4030_KEYPAD_CTRL_SOFT_NRST (1 << 0)
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/* USB */
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#define TWL4030_USB_FUNC_CTRL (0x04)
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#define TWL4030_USB_OPMODE_MASK (3 << 3)
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#define TWL4030_USB_XCVRSELECT_MASK (3 << 0)
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#define TWL4030_USB_IFC_CTRL (0x07)
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#define TWL4030_USB_CARKITMODE (1 << 2)
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#define TWL4030_USB_POWER_CTRL (0xAC)
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#define TWL4030_USB_OTG_ENAB (1 << 5)
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#define TWL4030_USB_PHY_PWR_CTRL (0xFD)
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#define TWL4030_USB_PHYPWD (1 << 0)
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#define TWL4030_USB_PHY_CLK_CTRL (0xFE)
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#define TWL4030_USB_CLOCKGATING_EN (1 << 2)
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#define TWL4030_USB_CLK32K_EN (1 << 1)
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#define TWL4030_USB_REQ_PHY_DPLL_CLK (1 << 0)
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#define TWL4030_USB_PHY_CLK_CTRL_STS (0xFF)
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#define TWL4030_USB_PHY_DPLL_CLK (1 << 0)
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#define TWL4030_USB_VENDOR_ID_LO 0x00
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#define TWL4030_USB_VENDOR_ID_HI 0x01
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#define TWL4030_USB_PRODUCT_ID_LO 0x02
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#define TWL4030_USB_PRODUCT_ID_HI 0x03
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#define TWL4030_USB_FUNC_CTRL 0x04
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#define TWL4030_USB_FUNC_CTRL_SET 0x05
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#define TWL4030_USB_FUNC_CTRL_CLR 0x06
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#define TWL4030_USB_IFC_CTRL 0x07
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#define TWL4030_USB_IFC_CTRL_SET 0x08
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#define TWL4030_USB_IFC_CTRL_CLR 0x09
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#define TWL4030_USB_OTG_CTRL 0x0A
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#define TWL4030_USB_OTG_CTRL_SET 0x0B
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#define TWL4030_USB_OTG_CTRL_CLR 0x0C
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#define TWL4030_USB_USB_INT_EN_RISE 0x0D
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#define TWL4030_USB_USB_INT_EN_RISE_SET 0x0E
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#define TWL4030_USB_USB_INT_EN_RISE_CLR 0x0F
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#define TWL4030_USB_USB_INT_EN_FALL 0x10
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#define TWL4030_USB_USB_INT_EN_FALL_SET 0x11
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#define TWL4030_USB_USB_INT_EN_FALL_CLR 0x12
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#define TWL4030_USB_USB_INT_STS 0x13
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#define TWL4030_USB_USB_INT_LATCH 0x14
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#define TWL4030_USB_DEBUG 0x15
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#define TWL4030_USB_SCRATCH_REG 0x16
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#define TWL4030_USB_SCRATCH_REG_SET 0x17
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#define TWL4030_USB_SCRATCH_REG_CLR 0x18
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#define TWL4030_USB_CARKIT_CTRL 0x19
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#define TWL4030_USB_CARKIT_CTRL_SET 0x1A
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#define TWL4030_USB_CARKIT_CTRL_CLR 0x1B
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#define TWL4030_USB_CARKIT_INT_DELAY 0x1C
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#define TWL4030_USB_CARKIT_INT_EN 0x1D
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#define TWL4030_USB_CARKIT_INT_EN_SET 0x1E
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#define TWL4030_USB_CARKIT_INT_EN_CLR 0x1F
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#define TWL4030_USB_CARKIT_INT_STS 0x20
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#define TWL4030_USB_CARKIT_INT_LATCH 0x21
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#define TWL4030_USB_CARKIT_PLS_CTRL 0x22
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#define TWL4030_USB_CARKIT_PLS_CTRL_SET 0x23
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#define TWL4030_USB_CARKIT_PLS_CTRL_CLR 0x24
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#define TWL4030_USB_TRANS_POS_WIDTH 0x25
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#define TWL4030_USB_TRANS_NEG_WIDTH 0x26
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#define TWL4030_USB_RCV_PLTY_RECOVERY 0x27
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#define TWL4030_USB_MCPC_CTRL 0x30
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#define TWL4030_USB_MCPC_CTRL_SET 0x31
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#define TWL4030_USB_MCPC_CTRL_CLR 0x32
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#define TWL4030_USB_MCPC_IO_CTRL 0x33
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#define TWL4030_USB_MCPC_IO_CTRL_SET 0x34
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#define TWL4030_USB_MCPC_IO_CTRL_CLR 0x35
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#define TWL4030_USB_MCPC_CTRL2 0x36
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#define TWL4030_USB_MCPC_CTRL2_SET 0x37
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#define TWL4030_USB_MCPC_CTRL2_CLR 0x38
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#define TWL4030_USB_OTHER_FUNC_CTRL 0x80
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#define TWL4030_USB_OTHER_FUNC_CTRL_SET 0x81
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#define TWL4030_USB_OTHER_FUNC_CTRL_CLR 0x82
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#define TWL4030_USB_OTHER_IFC_CTRL 0x83
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#define TWL4030_USB_OTHER_IFC_CTRL_SET 0x84
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#define TWL4030_USB_OTHER_IFC_CTRL_CLR 0x85
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#define TWL4030_USB_OTHER_INT_EN_RISE_SET 0x87
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#define TWL4030_USB_OTHER_INT_EN_RISE_CLR 0x88
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#define TWL4030_USB_OTHER_INT_EN_FALL 0x89
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#define TWL4030_USB_OTHER_INT_EN_FALL_SET 0x8A
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#define TWL4030_USB_OTHER_INT_EN_FALL_CLR 0x8B
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#define TWL4030_USB_OTHER_INT_STS 0x8C
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#define TWL4030_USB_OTHER_INT_LATCH 0x8D
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#define TWL4030_USB_ID_STATUS 0x96
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#define TWL4030_USB_CARKIT_SM_1_INT_EN 0x97
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#define TWL4030_USB_CARKIT_SM_1_INT_EN_SET 0x98
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#define TWL4030_USB_CARKIT_SM_1_INT_EN_CLR 0x99
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#define TWL4030_USB_CARKIT_SM_1_INT_STS 0x9A
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#define TWL4030_USB_CARKIT_SM_1_INT_LATCH 0x9B
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#define TWL4030_USB_CARKIT_SM_2_INT_EN 0x9C
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#define TWL4030_USB_CARKIT_SM_2_INT_EN_SET 0x9D
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#define TWL4030_USB_CARKIT_SM_2_INT_EN_CLR 0x9E
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#define TWL4030_USB_CARKIT_SM_2_INT_STS 0x9F
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#define TWL4030_USB_CARKIT_SM_2_INT_LATCH 0xA0
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#define TWL4030_USB_CARKIT_SM_CTRL 0xA1
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#define TWL4030_USB_CARKIT_SM_CTRL_SET 0xA2
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#define TWL4030_USB_CARKIT_SM_CTRL_CLR 0xA3
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#define TWL4030_USB_CARKIT_SM_CMD 0xA4
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#define TWL4030_USB_CARKIT_SM_CMD_SET 0xA5
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#define TWL4030_USB_CARKIT_SM_CMD_CLR 0xA6
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#define TWL4030_USB_CARKIT_SM_CMD_STS 0xA7
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#define TWL4030_USB_CARKIT_SM_STATUS 0xA8
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#define TWL4030_USB_CARKIT_SM_ERR_STATUS 0xAA
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#define TWL4030_USB_CARKIT_SM_CTRL_STATE 0xAB
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#define TWL4030_USB_POWER_CTRL 0xAC
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#define TWL4030_USB_POWER_CTRL_SET 0xAD
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#define TWL4030_USB_POWER_CTRL_CLR 0xAE
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#define TWL4030_USB_OTHER_IFC_CTRL2 0xAF
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#define TWL4030_USB_OTHER_IFC_CTRL2_SET 0xB0
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#define TWL4030_USB_OTHER_IFC_CTRL2_CLR 0xB1
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#define TWL4030_USB_REG_CTRL_EN 0xB2
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#define TWL4030_USB_REG_CTRL_EN_SET 0xB3
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#define TWL4030_USB_REG_CTRL_EN_CLR 0xB4
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#define TWL4030_USB_REG_CTRL_ERROR 0xB5
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#define TWL4030_USB_OTHER_FUNC_CTRL2 0xB8
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#define TWL4030_USB_OTHER_FUNC_CTRL2_SET 0xB9
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#define TWL4030_USB_OTHER_FUNC_CTRL2_CLR 0xBA
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#define TWL4030_USB_CARKIT_ANA_CTRL 0xBB
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#define TWL4030_USB_CARKIT_ANA_CTRL_SET 0xBC
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#define TWL4030_USB_CARKIT_ANA_CTRL_CLR 0xBD
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#define TWL4030_USB_VBUS_DEBOUNCE 0xC0
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#define TWL4030_USB_ID_DEBOUNCE 0xC1
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#define TWL4030_USB_TPH_DP_CON_MIN 0xC2
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#define TWL4030_USB_TPH_DP_CON_MAX 0xC3
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#define TWL4030_USB_TCR_DP_CON_MIN 0xC4
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#define TWL4030_USB_TCR_DP_CON_MAX 0xC5
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#define TWL4030_USB_TPH_DP_PD_SHORT 0xC6
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#define TWL4030_USB_TPH_CMD_DLY 0xC7
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#define TWL4030_USB_TPH_DET_RST 0xC8
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#define TWL4030_USB_TPH_AUD_BIAS 0xC9
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#define TWL4030_USB_TCR_UART_DET_MIN 0xCA
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#define TWL4030_USB_TCR_UART_DET_MAX 0xCB
|
||||
#define TWL4030_USB_TPH_ID_INT_PW 0xCD
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#define TWL4030_USB_TACC_ID_INT_WAIT 0xCE
|
||||
#define TWL4030_USB_TACC_ID_INT_PW 0xCF
|
||||
#define TWL4030_USB_TPH_CMD_WAIT 0xD0
|
||||
#define TWL4030_USB_TPH_ACK_WAIT 0xD1
|
||||
#define TWL4030_USB_TPH_DP_DISC_DET 0xD2
|
||||
#define TWL4030_USB_VBAT_TIMER 0xD3
|
||||
#define TWL4030_USB_CARKIT_4W_DEBUG 0xE0
|
||||
#define TWL4030_USB_CARKIT_5W_DEBUG 0xE1
|
||||
#define TWL4030_USB_PHY_PWR_CTRL 0xFD
|
||||
#define TWL4030_USB_PHY_CLK_CTRL 0xFE
|
||||
#define TWL4030_USB_PHY_CLK_CTRL_STS 0xFF
|
||||
|
||||
/*
|
||||
* Convience functions to read and write from TWL4030
|
||||
|
|
@ -398,4 +506,9 @@ void twl4030_power_mmc_init(void);
|
|||
*/
|
||||
void twl4030_led_init(void);
|
||||
|
||||
/*
|
||||
* USB
|
||||
*/
|
||||
int twl4030_usb_ulpi_init(void);
|
||||
|
||||
#endif /* TWL4030_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue