mirror of
https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
This is a convenient way for a driver to get the hardware address of a device, when regmap or syscon are not being used. Change existing callers to use it as an example to others. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
880 lines
27 KiB
C
880 lines
27 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* Copyright (c) 2009-2015 NVIDIA Corporation
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* Copyright (c) 2013 Lucas Stach
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <asm/errno.h>
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#include <asm/io.h>
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#include <asm-generic/gpio.h>
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#include <asm/arch/clock.h>
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#include <asm/arch-tegra/usb.h>
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#include <asm/arch-tegra/clk_rst.h>
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#include <usb.h>
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#include <usb/ulpi.h>
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#include <libfdt.h>
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#include <fdtdec.h>
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#include "ehci.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define USB1_ADDR_MASK 0xFFFF0000
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#define HOSTPC1_DEVLC 0x84
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#define HOSTPC1_PSPD(x) (((x) >> 25) & 0x3)
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#ifdef CONFIG_USB_ULPI
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#ifndef CONFIG_USB_ULPI_VIEWPORT
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#error "To use CONFIG_USB_ULPI on Tegra Boards you have to also \
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define CONFIG_USB_ULPI_VIEWPORT"
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#endif
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#endif
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/* Parameters we need for USB */
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enum {
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PARAM_DIVN, /* PLL FEEDBACK DIVIDer */
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PARAM_DIVM, /* PLL INPUT DIVIDER */
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PARAM_DIVP, /* POST DIVIDER (2^N) */
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PARAM_CPCON, /* BASE PLLC CHARGE Pump setup ctrl */
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PARAM_LFCON, /* BASE PLLC LOOP FILter setup ctrl */
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PARAM_ENABLE_DELAY_COUNT, /* PLL-U Enable Delay Count */
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PARAM_STABLE_COUNT, /* PLL-U STABLE count */
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PARAM_ACTIVE_DELAY_COUNT, /* PLL-U Active delay count */
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PARAM_XTAL_FREQ_COUNT, /* PLL-U XTAL frequency count */
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PARAM_DEBOUNCE_A_TIME, /* 10MS DELAY for BIAS_DEBOUNCE_A */
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PARAM_BIAS_TIME, /* 20US DELAY AFter bias cell op */
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PARAM_COUNT
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};
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/* Possible port types (dual role mode) */
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enum dr_mode {
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DR_MODE_NONE = 0,
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DR_MODE_HOST, /* supports host operation */
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DR_MODE_DEVICE, /* supports device operation */
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DR_MODE_OTG, /* supports both */
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};
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enum usb_ctlr_type {
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USB_CTLR_T20,
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USB_CTLR_T30,
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USB_CTLR_T114,
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USB_CTLR_T210,
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USB_CTRL_COUNT,
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};
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/* Information about a USB port */
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struct fdt_usb {
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struct ehci_ctrl ehci;
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struct usb_ctlr *reg; /* address of registers in physical memory */
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unsigned utmi:1; /* 1 if port has external tranceiver, else 0 */
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unsigned ulpi:1; /* 1 if port has external ULPI transceiver */
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unsigned enabled:1; /* 1 to enable, 0 to disable */
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unsigned has_legacy_mode:1; /* 1 if this port has legacy mode */
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enum usb_ctlr_type type;
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enum usb_init_type init_type;
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enum dr_mode dr_mode; /* dual role mode */
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enum periph_id periph_id;/* peripheral id */
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struct gpio_desc vbus_gpio; /* GPIO for vbus enable */
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struct gpio_desc phy_reset_gpio; /* GPIO to reset ULPI phy */
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};
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/*
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* This table has USB timing parameters for each Oscillator frequency we
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* support. There are four sets of values:
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*
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* 1. PLLU configuration information (reference clock is osc/clk_m and
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* PLLU-FOs are fixed at 12MHz/60MHz/480MHz).
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*
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* Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
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* ----------------------------------------------------------------------
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* DIVN 960 (0x3c0) 200 (0c8) 960 (3c0h) 960 (3c0)
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* DIVM 13 (0d) 4 (04) 12 (0c) 26 (1a)
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* Filter frequency (MHz) 1 4.8 6 2
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* CPCON 1100b 0011b 1100b 1100b
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* LFCON0 0 0 0 0
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*
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* 2. PLL CONFIGURATION & PARAMETERS for different clock generators:
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*
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* Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
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* ---------------------------------------------------------------------------
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* PLLU_ENABLE_DLY_COUNT 02 (0x02) 03 (03) 02 (02) 04 (04)
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* PLLU_STABLE_COUNT 51 (33) 75 (4B) 47 (2F) 102 (66)
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* PLL_ACTIVE_DLY_COUNT 05 (05) 06 (06) 04 (04) 09 (09)
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* XTAL_FREQ_COUNT 127 (7F) 187 (BB) 118 (76) 254 (FE)
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*
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* 3. Debounce values IdDig, Avalid, Bvalid, VbusValid, VbusWakeUp, and
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* SessEnd. Each of these signals have their own debouncer and for each of
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* those one out of two debouncing times can be chosen (BIAS_DEBOUNCE_A or
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* BIAS_DEBOUNCE_B).
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*
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* The values of DEBOUNCE_A and DEBOUNCE_B are calculated as follows:
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* 0xffff -> No debouncing at all
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* <n> ms = <n> *1000 / (1/19.2MHz) / 4
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*
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* So to program a 1 ms debounce for BIAS_DEBOUNCE_A, we have:
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* BIAS_DEBOUNCE_A[15:0] = 1000 * 19.2 / 4 = 4800 = 0x12c0
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*
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* We need to use only DebounceA for BOOTROM. We don't need the DebounceB
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* values, so we can keep those to default.
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*
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* 4. The 20 microsecond delay after bias cell operation.
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*/
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static const unsigned T20_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
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/* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
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{ 0x3C0, 0x0D, 0x00, 0xC, 0, 0x02, 0x33, 0x05, 0x7F, 0x7EF4, 5 },
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{ 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x06, 0xBB, 0xBB80, 7 },
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{ 0x3C0, 0x0C, 0x00, 0xC, 0, 0x02, 0x2F, 0x04, 0x76, 0x7530, 5 },
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{ 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
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};
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static const unsigned T30_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
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/* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
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{ 0x3C0, 0x0D, 0x00, 0xC, 1, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 5 },
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{ 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 7 },
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{ 0x3C0, 0x0C, 0x00, 0xC, 1, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
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{ 0x3C0, 0x1A, 0x00, 0xC, 1, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
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};
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static const unsigned T114_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
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/* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
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{ 0x3C0, 0x0D, 0x00, 0xC, 2, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 6 },
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{ 0x0C8, 0x04, 0x00, 0x3, 2, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 8 },
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{ 0x3C0, 0x0C, 0x00, 0xC, 2, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
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{ 0x3C0, 0x1A, 0x00, 0xC, 2, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 11 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
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{ 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
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};
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/* NOTE: 13/26MHz settings are N/A for T210, so dupe 12MHz settings for now */
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static const unsigned T210_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
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/* DivN, DivM, DivP, KCP, KVCO, Delays Debounce, Bias */
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{ 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 32500, 5 },
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{ 0x019, 0x01, 0x01, 0x0, 0, 0x03, 0x4B, 0x0C, 0xBB, 48000, 8 },
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{ 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 30000, 5 },
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{ 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 65000, 5 },
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{ 0x019, 0x02, 0x01, 0x0, 0, 0x05, 0x96, 0x18, 0x177, 96000, 15 },
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{ 0x028, 0x04, 0x01, 0x0, 0, 0x04, 0x66, 0x09, 0xFE, 120000, 20 }
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};
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/* UTMIP Idle Wait Delay */
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static const u8 utmip_idle_wait_delay = 17;
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/* UTMIP Elastic limit */
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static const u8 utmip_elastic_limit = 16;
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/* UTMIP High Speed Sync Start Delay */
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static const u8 utmip_hs_sync_start_delay = 9;
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struct fdt_usb_controller {
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/* flag to determine whether controller supports hostpc register */
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u32 has_hostpc:1;
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const unsigned *pll_parameter;
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};
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static struct fdt_usb_controller fdt_usb_controllers[USB_CTRL_COUNT] = {
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{
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.has_hostpc = 0,
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.pll_parameter = (const unsigned *)T20_usb_pll,
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},
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{
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.has_hostpc = 1,
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.pll_parameter = (const unsigned *)T30_usb_pll,
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},
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{
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.has_hostpc = 1,
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.pll_parameter = (const unsigned *)T114_usb_pll,
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},
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{
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.has_hostpc = 1,
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.pll_parameter = (const unsigned *)T210_usb_pll,
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},
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};
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/*
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* A known hardware issue where Connect Status Change bit of PORTSC register
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* of USB1 controller will be set after Port Reset.
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* We have to clear it in order for later device enumeration to proceed.
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*/
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static void tegra_ehci_powerup_fixup(struct ehci_ctrl *ctrl,
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uint32_t *status_reg, uint32_t *reg)
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{
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struct fdt_usb *config = ctrl->priv;
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struct fdt_usb_controller *controller;
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controller = &fdt_usb_controllers[config->type];
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mdelay(50);
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/* This is to avoid PORT_ENABLE bit to be cleared in "ehci-hcd.c". */
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if (controller->has_hostpc)
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*reg |= EHCI_PS_PE;
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if (!config->has_legacy_mode)
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return;
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/* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
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if (ehci_readl(status_reg) & EHCI_PS_CSC)
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*reg |= EHCI_PS_CSC;
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}
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static void tegra_ehci_set_usbmode(struct ehci_ctrl *ctrl)
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{
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struct fdt_usb *config = ctrl->priv;
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struct usb_ctlr *usbctlr;
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uint32_t tmp;
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usbctlr = config->reg;
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tmp = ehci_readl(&usbctlr->usb_mode);
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tmp |= USBMODE_CM_HC;
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ehci_writel(&usbctlr->usb_mode, tmp);
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}
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static int tegra_ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
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{
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struct fdt_usb *config = ctrl->priv;
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struct fdt_usb_controller *controller;
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uint32_t tmp;
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uint32_t *reg_ptr;
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controller = &fdt_usb_controllers[config->type];
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if (controller->has_hostpc) {
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reg_ptr = (uint32_t *)((u8 *)&ctrl->hcor->or_usbcmd +
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HOSTPC1_DEVLC);
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tmp = ehci_readl(reg_ptr);
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return HOSTPC1_PSPD(tmp);
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} else
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return PORTSC_PSPD(reg);
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}
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/* Set up VBUS for host/device mode */
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static void set_up_vbus(struct fdt_usb *config, enum usb_init_type init)
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{
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/*
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* If we are an OTG port initializing in host mode,
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* check if remote host is driving VBus and bail out in this case.
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*/
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if (init == USB_INIT_HOST &&
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config->dr_mode == DR_MODE_OTG &&
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(readl(&config->reg->phy_vbus_sensors) & VBUS_VLD_STS)) {
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printf("tegrausb: VBUS input active; not enabling as host\n");
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return;
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}
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if (dm_gpio_is_valid(&config->vbus_gpio)) {
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int vbus_value;
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vbus_value = (init == USB_INIT_HOST);
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dm_gpio_set_value(&config->vbus_gpio, vbus_value);
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debug("set_up_vbus: GPIO %d %d\n",
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gpio_get_number(&config->vbus_gpio), vbus_value);
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}
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}
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static void usbf_reset_controller(struct fdt_usb *config,
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struct usb_ctlr *usbctlr)
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{
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/* Reset the USB controller with 2us delay */
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reset_periph(config->periph_id, 2);
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/*
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* Set USB1_NO_LEGACY_MODE to 1, Registers are accessible under
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* base address
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*/
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if (config->has_legacy_mode)
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setbits_le32(&usbctlr->usb1_legacy_ctrl, USB1_NO_LEGACY_MODE);
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/* Put UTMIP1/3 in reset */
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setbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
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/* Enable the UTMIP PHY */
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if (config->utmi)
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setbits_le32(&usbctlr->susp_ctrl, UTMIP_PHY_ENB);
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}
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static const unsigned *get_pll_timing(struct fdt_usb_controller *controller)
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{
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const unsigned *timing;
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timing = controller->pll_parameter +
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clock_get_osc_freq() * PARAM_COUNT;
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return timing;
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}
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/* select the PHY to use with a USB controller */
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static void init_phy_mux(struct fdt_usb *config, uint pts,
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enum usb_init_type init)
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{
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struct usb_ctlr *usbctlr = config->reg;
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#if defined(CONFIG_TEGRA20)
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if (config->periph_id == PERIPH_ID_USBD) {
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clrsetbits_le32(&usbctlr->port_sc1, PTS1_MASK,
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pts << PTS1_SHIFT);
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clrbits_le32(&usbctlr->port_sc1, STS1);
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} else {
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clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK,
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pts << PTS_SHIFT);
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clrbits_le32(&usbctlr->port_sc1, STS);
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}
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#else
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/* Set to Host mode (if applicable) after Controller Reset was done */
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clrsetbits_le32(&usbctlr->usb_mode, USBMODE_CM_HC,
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(init == USB_INIT_HOST) ? USBMODE_CM_HC : 0);
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/*
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* Select PHY interface after setting host mode.
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* For device mode, the ordering requirement is not an issue, since
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* only the first USB controller supports device mode, and that USB
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* controller can only talk to a UTMI PHY, so the PHY selection is
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* already made at reset time, so this write is a no-op.
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*/
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clrsetbits_le32(&usbctlr->hostpc1_devlc, PTS_MASK,
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pts << PTS_SHIFT);
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clrbits_le32(&usbctlr->hostpc1_devlc, STS);
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#endif
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}
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/* set up the UTMI USB controller with the parameters provided */
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static int init_utmi_usb_controller(struct fdt_usb *config,
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enum usb_init_type init)
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{
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struct fdt_usb_controller *controller;
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u32 b_sess_valid_mask, val;
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int loop_count;
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const unsigned *timing;
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struct usb_ctlr *usbctlr = config->reg;
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struct clk_rst_ctlr *clkrst;
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struct usb_ctlr *usb1ctlr;
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clock_enable(config->periph_id);
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/* Reset the usb controller */
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usbf_reset_controller(config, usbctlr);
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/* Stop crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN low */
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clrbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
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/* Follow the crystal clock disable by >100ns delay */
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udelay(1);
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b_sess_valid_mask = (VBUS_B_SESS_VLD_SW_VALUE | VBUS_B_SESS_VLD_SW_EN);
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clrsetbits_le32(&usbctlr->phy_vbus_sensors, b_sess_valid_mask,
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(init == USB_INIT_DEVICE) ? b_sess_valid_mask : 0);
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/*
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* To Use the A Session Valid for cable detection logic, VBUS_WAKEUP
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* mux must be switched to actually use a_sess_vld threshold.
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*/
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if (config->dr_mode == DR_MODE_OTG &&
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dm_gpio_is_valid(&config->vbus_gpio))
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clrsetbits_le32(&usbctlr->usb1_legacy_ctrl,
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VBUS_SENSE_CTL_MASK,
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VBUS_SENSE_CTL_A_SESS_VLD << VBUS_SENSE_CTL_SHIFT);
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controller = &fdt_usb_controllers[config->type];
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debug("controller=%p, type=%d\n", controller, config->type);
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/*
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* PLL Delay CONFIGURATION settings. The following parameters control
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* the bring up of the plls.
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*/
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timing = get_pll_timing(controller);
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if (!controller->has_hostpc) {
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val = readl(&usbctlr->utmip_misc_cfg1);
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clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
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timing[PARAM_STABLE_COUNT] <<
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UTMIP_PLLU_STABLE_COUNT_SHIFT);
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clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
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timing[PARAM_ACTIVE_DELAY_COUNT] <<
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UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
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writel(val, &usbctlr->utmip_misc_cfg1);
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/* Set PLL enable delay count and crystal frequency count */
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val = readl(&usbctlr->utmip_pll_cfg1);
|
|
clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
|
|
timing[PARAM_ENABLE_DELAY_COUNT] <<
|
|
UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
|
|
timing[PARAM_XTAL_FREQ_COUNT] <<
|
|
UTMIP_XTAL_FREQ_COUNT_SHIFT);
|
|
writel(val, &usbctlr->utmip_pll_cfg1);
|
|
} else {
|
|
clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
|
|
val = readl(&clkrst->crc_utmip_pll_cfg2);
|
|
clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
|
|
timing[PARAM_STABLE_COUNT] <<
|
|
UTMIP_PLLU_STABLE_COUNT_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
|
|
timing[PARAM_ACTIVE_DELAY_COUNT] <<
|
|
UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
|
|
writel(val, &clkrst->crc_utmip_pll_cfg2);
|
|
|
|
/* Set PLL enable delay count and crystal frequency count */
|
|
val = readl(&clkrst->crc_utmip_pll_cfg1);
|
|
clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
|
|
timing[PARAM_ENABLE_DELAY_COUNT] <<
|
|
UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
|
|
timing[PARAM_XTAL_FREQ_COUNT] <<
|
|
UTMIP_XTAL_FREQ_COUNT_SHIFT);
|
|
writel(val, &clkrst->crc_utmip_pll_cfg1);
|
|
|
|
/* Disable Power Down state for PLL */
|
|
clrbits_le32(&clkrst->crc_utmip_pll_cfg1,
|
|
PLLU_POWERDOWN | PLL_ENABLE_POWERDOWN |
|
|
PLL_ACTIVE_POWERDOWN);
|
|
|
|
/* Recommended PHY settings for EYE diagram */
|
|
val = readl(&usbctlr->utmip_xcvr_cfg0);
|
|
clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MASK,
|
|
0x4 << UTMIP_XCVR_SETUP_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MSB_MASK,
|
|
0x3 << UTMIP_XCVR_SETUP_MSB_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_XCVR_HSSLEW_MSB_MASK,
|
|
0x8 << UTMIP_XCVR_HSSLEW_MSB_SHIFT);
|
|
writel(val, &usbctlr->utmip_xcvr_cfg0);
|
|
clrsetbits_le32(&usbctlr->utmip_xcvr_cfg1,
|
|
UTMIP_XCVR_TERM_RANGE_ADJ_MASK,
|
|
0x7 << UTMIP_XCVR_TERM_RANGE_ADJ_SHIFT);
|
|
|
|
/* Some registers can be controlled from USB1 only. */
|
|
if (config->periph_id != PERIPH_ID_USBD) {
|
|
clock_enable(PERIPH_ID_USBD);
|
|
/* Disable Reset if in Reset state */
|
|
reset_set_enable(PERIPH_ID_USBD, 0);
|
|
}
|
|
usb1ctlr = (struct usb_ctlr *)
|
|
((unsigned long)config->reg & USB1_ADDR_MASK);
|
|
val = readl(&usb1ctlr->utmip_bias_cfg0);
|
|
setbits_le32(&val, UTMIP_HSDISCON_LEVEL_MSB);
|
|
clrsetbits_le32(&val, UTMIP_HSDISCON_LEVEL_MASK,
|
|
0x1 << UTMIP_HSDISCON_LEVEL_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_HSSQUELCH_LEVEL_MASK,
|
|
0x2 << UTMIP_HSSQUELCH_LEVEL_SHIFT);
|
|
writel(val, &usb1ctlr->utmip_bias_cfg0);
|
|
|
|
/* Miscellaneous setting mentioned in Programming Guide */
|
|
clrbits_le32(&usbctlr->utmip_misc_cfg0,
|
|
UTMIP_SUSPEND_EXIT_ON_EDGE);
|
|
}
|
|
|
|
/* Setting the tracking length time */
|
|
clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
|
|
UTMIP_BIAS_PDTRK_COUNT_MASK,
|
|
timing[PARAM_BIAS_TIME] << UTMIP_BIAS_PDTRK_COUNT_SHIFT);
|
|
|
|
/* Program debounce time for VBUS to become valid */
|
|
clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
|
|
UTMIP_DEBOUNCE_CFG0_MASK,
|
|
timing[PARAM_DEBOUNCE_A_TIME] << UTMIP_DEBOUNCE_CFG0_SHIFT);
|
|
|
|
if (timing[PARAM_DEBOUNCE_A_TIME] > 0xFFFF) {
|
|
clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
|
|
UTMIP_DEBOUNCE_CFG0_MASK,
|
|
(timing[PARAM_DEBOUNCE_A_TIME] >> 1)
|
|
<< UTMIP_DEBOUNCE_CFG0_SHIFT);
|
|
clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
|
|
UTMIP_BIAS_DEBOUNCE_TIMESCALE_MASK,
|
|
1 << UTMIP_BIAS_DEBOUNCE_TIMESCALE_SHIFT);
|
|
}
|
|
|
|
setbits_le32(&usbctlr->utmip_tx_cfg0, UTMIP_FS_PREAMBLE_J);
|
|
|
|
/* Disable battery charge enabling bit */
|
|
setbits_le32(&usbctlr->utmip_bat_chrg_cfg0, UTMIP_PD_CHRG);
|
|
|
|
clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_XCVR_LSBIAS_SE);
|
|
setbits_le32(&usbctlr->utmip_spare_cfg0, FUSE_SETUP_SEL);
|
|
|
|
/*
|
|
* Configure the UTMIP_IDLE_WAIT and UTMIP_ELASTIC_LIMIT
|
|
* Setting these fields, together with default values of the
|
|
* other fields, results in programming the registers below as
|
|
* follows:
|
|
* UTMIP_HSRX_CFG0 = 0x9168c000
|
|
* UTMIP_HSRX_CFG1 = 0x13
|
|
*/
|
|
|
|
/* Set PLL enable delay count and Crystal frequency count */
|
|
val = readl(&usbctlr->utmip_hsrx_cfg0);
|
|
clrsetbits_le32(&val, UTMIP_IDLE_WAIT_MASK,
|
|
utmip_idle_wait_delay << UTMIP_IDLE_WAIT_SHIFT);
|
|
clrsetbits_le32(&val, UTMIP_ELASTIC_LIMIT_MASK,
|
|
utmip_elastic_limit << UTMIP_ELASTIC_LIMIT_SHIFT);
|
|
writel(val, &usbctlr->utmip_hsrx_cfg0);
|
|
|
|
/* Configure the UTMIP_HS_SYNC_START_DLY */
|
|
clrsetbits_le32(&usbctlr->utmip_hsrx_cfg1,
|
|
UTMIP_HS_SYNC_START_DLY_MASK,
|
|
utmip_hs_sync_start_delay << UTMIP_HS_SYNC_START_DLY_SHIFT);
|
|
|
|
/* Preceed the crystal clock disable by >100ns delay. */
|
|
udelay(1);
|
|
|
|
/* Resuscitate crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN */
|
|
setbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
|
|
|
|
if (controller->has_hostpc) {
|
|
if (config->periph_id == PERIPH_ID_USBD)
|
|
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
|
|
UTMIP_FORCE_PD_SAMP_A_POWERDOWN);
|
|
if (config->periph_id == PERIPH_ID_USB2)
|
|
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
|
|
UTMIP_FORCE_PD_SAMP_B_POWERDOWN);
|
|
if (config->periph_id == PERIPH_ID_USB3)
|
|
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
|
|
UTMIP_FORCE_PD_SAMP_C_POWERDOWN);
|
|
}
|
|
/* Finished the per-controller init. */
|
|
|
|
/* De-assert UTMIP_RESET to bring out of reset. */
|
|
clrbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
|
|
|
|
/* Wait for the phy clock to become valid in 100 ms */
|
|
for (loop_count = 100000; loop_count != 0; loop_count--) {
|
|
if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
|
|
break;
|
|
udelay(1);
|
|
}
|
|
if (!loop_count)
|
|
return -ETIMEDOUT;
|
|
|
|
/* Disable ICUSB FS/LS transceiver */
|
|
clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
|
|
|
|
/* Select UTMI parallel interface */
|
|
init_phy_mux(config, PTS_UTMI, init);
|
|
|
|
/* Deassert power down state */
|
|
clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_FORCE_PD_POWERDOWN |
|
|
UTMIP_FORCE_PD2_POWERDOWN | UTMIP_FORCE_PDZI_POWERDOWN);
|
|
clrbits_le32(&usbctlr->utmip_xcvr_cfg1, UTMIP_FORCE_PDDISC_POWERDOWN |
|
|
UTMIP_FORCE_PDCHRP_POWERDOWN | UTMIP_FORCE_PDDR_POWERDOWN);
|
|
|
|
if (controller->has_hostpc) {
|
|
/*
|
|
* BIAS Pad Power Down is common among all 3 USB
|
|
* controllers and can be controlled from USB1 only.
|
|
*/
|
|
usb1ctlr = (struct usb_ctlr *)
|
|
((unsigned long)config->reg & USB1_ADDR_MASK);
|
|
clrbits_le32(&usb1ctlr->utmip_bias_cfg0, UTMIP_BIASPD);
|
|
udelay(25);
|
|
clrbits_le32(&usb1ctlr->utmip_bias_cfg1,
|
|
UTMIP_FORCE_PDTRK_POWERDOWN);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_USB_ULPI
|
|
/* if board file does not set a ULPI reference frequency we default to 24MHz */
|
|
#ifndef CONFIG_ULPI_REF_CLK
|
|
#define CONFIG_ULPI_REF_CLK 24000000
|
|
#endif
|
|
|
|
/* set up the ULPI USB controller with the parameters provided */
|
|
static int init_ulpi_usb_controller(struct fdt_usb *config,
|
|
enum usb_init_type init)
|
|
{
|
|
u32 val;
|
|
int loop_count;
|
|
struct ulpi_viewport ulpi_vp;
|
|
struct usb_ctlr *usbctlr = config->reg;
|
|
int ret;
|
|
|
|
/* set up ULPI reference clock on pllp_out4 */
|
|
clock_enable(PERIPH_ID_DEV2_OUT);
|
|
clock_set_pllout(CLOCK_ID_PERIPH, PLL_OUT4, CONFIG_ULPI_REF_CLK);
|
|
|
|
/* reset ULPI phy */
|
|
if (dm_gpio_is_valid(&config->phy_reset_gpio)) {
|
|
dm_gpio_set_value(&config->phy_reset_gpio, 0);
|
|
mdelay(5);
|
|
dm_gpio_set_value(&config->phy_reset_gpio, 1);
|
|
}
|
|
|
|
/* Reset the usb controller */
|
|
clock_enable(config->periph_id);
|
|
usbf_reset_controller(config, usbctlr);
|
|
|
|
/* enable pinmux bypass */
|
|
setbits_le32(&usbctlr->ulpi_timing_ctrl_0,
|
|
ULPI_CLKOUT_PINMUX_BYP | ULPI_OUTPUT_PINMUX_BYP);
|
|
|
|
/* Select ULPI parallel interface */
|
|
init_phy_mux(config, PTS_ULPI, init);
|
|
|
|
/* enable ULPI transceiver */
|
|
setbits_le32(&usbctlr->susp_ctrl, ULPI_PHY_ENB);
|
|
|
|
/* configure ULPI transceiver timings */
|
|
val = 0;
|
|
writel(val, &usbctlr->ulpi_timing_ctrl_1);
|
|
|
|
val |= ULPI_DATA_TRIMMER_SEL(4);
|
|
val |= ULPI_STPDIRNXT_TRIMMER_SEL(4);
|
|
val |= ULPI_DIR_TRIMMER_SEL(4);
|
|
writel(val, &usbctlr->ulpi_timing_ctrl_1);
|
|
udelay(10);
|
|
|
|
val |= ULPI_DATA_TRIMMER_LOAD;
|
|
val |= ULPI_STPDIRNXT_TRIMMER_LOAD;
|
|
val |= ULPI_DIR_TRIMMER_LOAD;
|
|
writel(val, &usbctlr->ulpi_timing_ctrl_1);
|
|
|
|
/* set up phy for host operation with external vbus supply */
|
|
ulpi_vp.port_num = 0;
|
|
ulpi_vp.viewport_addr = (u32)&usbctlr->ulpi_viewport;
|
|
|
|
ret = ulpi_init(&ulpi_vp);
|
|
if (ret) {
|
|
printf("Tegra ULPI viewport init failed\n");
|
|
return ret;
|
|
}
|
|
|
|
ulpi_set_vbus(&ulpi_vp, 1, 1);
|
|
ulpi_set_vbus_indicator(&ulpi_vp, 1, 1, 0);
|
|
|
|
/* enable wakeup events */
|
|
setbits_le32(&usbctlr->port_sc1, WKCN | WKDS | WKOC);
|
|
|
|
/* Enable and wait for the phy clock to become valid in 100 ms */
|
|
setbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
|
|
for (loop_count = 100000; loop_count != 0; loop_count--) {
|
|
if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
|
|
break;
|
|
udelay(1);
|
|
}
|
|
if (!loop_count)
|
|
return -ETIMEDOUT;
|
|
clrbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static int init_ulpi_usb_controller(struct fdt_usb *config,
|
|
enum usb_init_type init)
|
|
{
|
|
printf("No code to set up ULPI controller, please enable"
|
|
"CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT");
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
static void config_clock(const u32 timing[])
|
|
{
|
|
debug("%s: DIVM = %d, DIVN = %d, DIVP = %d, cpcon/lfcon = %d/%d\n",
|
|
__func__, timing[PARAM_DIVM], timing[PARAM_DIVN],
|
|
timing[PARAM_DIVP], timing[PARAM_CPCON], timing[PARAM_LFCON]);
|
|
|
|
clock_start_pll(CLOCK_ID_USB,
|
|
timing[PARAM_DIVM], timing[PARAM_DIVN], timing[PARAM_DIVP],
|
|
timing[PARAM_CPCON], timing[PARAM_LFCON]);
|
|
}
|
|
|
|
static int fdt_decode_usb(struct udevice *dev, struct fdt_usb *config)
|
|
{
|
|
const void *blob = gd->fdt_blob;
|
|
int node = dev->of_offset;
|
|
const char *phy, *mode;
|
|
|
|
config->reg = (struct usb_ctlr *)dev_get_addr(dev);
|
|
mode = fdt_getprop(blob, node, "dr_mode", NULL);
|
|
if (mode) {
|
|
if (0 == strcmp(mode, "host"))
|
|
config->dr_mode = DR_MODE_HOST;
|
|
else if (0 == strcmp(mode, "peripheral"))
|
|
config->dr_mode = DR_MODE_DEVICE;
|
|
else if (0 == strcmp(mode, "otg"))
|
|
config->dr_mode = DR_MODE_OTG;
|
|
else {
|
|
debug("%s: Cannot decode dr_mode '%s'\n", __func__,
|
|
mode);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
config->dr_mode = DR_MODE_HOST;
|
|
}
|
|
|
|
phy = fdt_getprop(blob, node, "phy_type", NULL);
|
|
config->utmi = phy && 0 == strcmp("utmi", phy);
|
|
config->ulpi = phy && 0 == strcmp("ulpi", phy);
|
|
config->enabled = fdtdec_get_is_enabled(blob, node);
|
|
config->has_legacy_mode = fdtdec_get_bool(blob, node,
|
|
"nvidia,has-legacy-mode");
|
|
config->periph_id = clock_decode_periph_id(blob, node);
|
|
if (config->periph_id == PERIPH_ID_NONE) {
|
|
debug("%s: Missing/invalid peripheral ID\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
gpio_request_by_name_nodev(blob, node, "nvidia,vbus-gpio", 0,
|
|
&config->vbus_gpio, GPIOD_IS_OUT);
|
|
gpio_request_by_name_nodev(blob, node, "nvidia,phy-reset-gpio", 0,
|
|
&config->phy_reset_gpio, GPIOD_IS_OUT);
|
|
debug("enabled=%d, legacy_mode=%d, utmi=%d, ulpi=%d, periph_id=%d, "
|
|
"vbus=%d, phy_reset=%d, dr_mode=%d\n",
|
|
config->enabled, config->has_legacy_mode, config->utmi,
|
|
config->ulpi, config->periph_id,
|
|
gpio_get_number(&config->vbus_gpio),
|
|
gpio_get_number(&config->phy_reset_gpio), config->dr_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usb_common_init(struct fdt_usb *config, enum usb_init_type init)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (init) {
|
|
case USB_INIT_HOST:
|
|
switch (config->dr_mode) {
|
|
case DR_MODE_HOST:
|
|
case DR_MODE_OTG:
|
|
break;
|
|
default:
|
|
printf("tegrausb: Invalid dr_mode %d for host mode\n",
|
|
config->dr_mode);
|
|
return -1;
|
|
}
|
|
break;
|
|
case USB_INIT_DEVICE:
|
|
if (config->periph_id != PERIPH_ID_USBD) {
|
|
printf("tegrausb: Device mode only supported on first USB controller\n");
|
|
return -1;
|
|
}
|
|
if (!config->utmi) {
|
|
printf("tegrausb: Device mode only supported with UTMI PHY\n");
|
|
return -1;
|
|
}
|
|
switch (config->dr_mode) {
|
|
case DR_MODE_DEVICE:
|
|
case DR_MODE_OTG:
|
|
break;
|
|
default:
|
|
printf("tegrausb: Invalid dr_mode %d for device mode\n",
|
|
config->dr_mode);
|
|
return -1;
|
|
}
|
|
break;
|
|
default:
|
|
printf("tegrausb: Unknown USB_INIT_* %d\n", init);
|
|
return -1;
|
|
}
|
|
|
|
debug("%d, %d\n", config->utmi, config->ulpi);
|
|
if (config->utmi)
|
|
ret = init_utmi_usb_controller(config, init);
|
|
else if (config->ulpi)
|
|
ret = init_ulpi_usb_controller(config, init);
|
|
if (ret)
|
|
return ret;
|
|
|
|
set_up_vbus(config, init);
|
|
|
|
config->init_type = init;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void usb_common_uninit(struct fdt_usb *priv)
|
|
{
|
|
struct usb_ctlr *usbctlr;
|
|
|
|
usbctlr = priv->reg;
|
|
|
|
/* Stop controller */
|
|
writel(0, &usbctlr->usb_cmd);
|
|
udelay(1000);
|
|
|
|
/* Initiate controller reset */
|
|
writel(2, &usbctlr->usb_cmd);
|
|
udelay(1000);
|
|
}
|
|
|
|
static const struct ehci_ops tegra_ehci_ops = {
|
|
.set_usb_mode = tegra_ehci_set_usbmode,
|
|
.get_port_speed = tegra_ehci_get_port_speed,
|
|
.powerup_fixup = tegra_ehci_powerup_fixup,
|
|
};
|
|
|
|
static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct fdt_usb *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = fdt_decode_usb(dev, priv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
priv->type = dev_get_driver_data(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ehci_usb_probe(struct udevice *dev)
|
|
{
|
|
struct usb_platdata *plat = dev_get_platdata(dev);
|
|
struct fdt_usb *priv = dev_get_priv(dev);
|
|
struct ehci_hccr *hccr;
|
|
struct ehci_hcor *hcor;
|
|
static bool clk_done;
|
|
int ret;
|
|
|
|
ret = usb_common_init(priv, plat->init_type);
|
|
if (ret)
|
|
return ret;
|
|
hccr = (struct ehci_hccr *)&priv->reg->cap_length;
|
|
hcor = (struct ehci_hcor *)&priv->reg->usb_cmd;
|
|
if (!clk_done) {
|
|
config_clock(get_pll_timing(&fdt_usb_controllers[priv->type]));
|
|
clk_done = true;
|
|
}
|
|
|
|
return ehci_register(dev, hccr, hcor, &tegra_ehci_ops, 0,
|
|
plat->init_type);
|
|
}
|
|
|
|
static int ehci_usb_remove(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = ehci_deregister(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id ehci_usb_ids[] = {
|
|
{ .compatible = "nvidia,tegra20-ehci", .data = USB_CTLR_T20 },
|
|
{ .compatible = "nvidia,tegra30-ehci", .data = USB_CTLR_T30 },
|
|
{ .compatible = "nvidia,tegra114-ehci", .data = USB_CTLR_T114 },
|
|
{ .compatible = "nvidia,tegra210-ehci", .data = USB_CTLR_T210 },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(usb_ehci) = {
|
|
.name = "ehci_tegra",
|
|
.id = UCLASS_USB,
|
|
.of_match = ehci_usb_ids,
|
|
.ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
|
|
.probe = ehci_usb_probe,
|
|
.remove = ehci_usb_remove,
|
|
.ops = &ehci_usb_ops,
|
|
.platdata_auto_alloc_size = sizeof(struct usb_platdata),
|
|
.priv_auto_alloc_size = sizeof(struct fdt_usb),
|
|
.flags = DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|