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authorLinus Torvalds <torvalds@linux-foundation.org>2023-09-01 09:23:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-09-01 09:23:34 -0700
commit51e7accbe8ab51476fbe55fbb5616c12fb3a0beb (patch)
tree70e83070a63b607c7bb3a7d4b2757b3ad47fb427 /arch/mips/cavium-octeon
parente2c874f999f079e3ec9b8071e92c87d57aded3b6 (diff)
parent895ed7eb263d7ce2d2592fdd3e211464a556084a (diff)
downloadlwn-51e7accbe8ab51476fbe55fbb5616c12fb3a0beb.tar.gz
lwn-51e7accbe8ab51476fbe55fbb5616c12fb3a0beb.zip
Merge tag 'usb-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt / PHY driver updates from Greg KH: "Here is the big set of USB, Thunderbolt, and PHY driver updates for 6.6-rc1. Included in here are: - PHY driver additions and cleanups - Thunderbolt minor additions and fixes - USB MIDI 2 gadget support added - dwc3 driver updates and additions - Removal of some old USB wireless code that was missed when that codebase was originally removed a few years ago, cleaning up some core USB code paths - USB core potential use-after-free fixes that syzbot from different people/groups keeps tripping over - typec updates and additions - gadget fixes and cleanups - loads of smaller USB core and driver cleanups all over the place Full details are in the shortlog. All of these have been in linux-next for a while with no reported problems" * tag 'usb-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (154 commits) platform/chrome: cros_ec_typec: Configure Retimer cable type tcpm: Avoid soft reset when partner does not support get_status usb: typec: tcpm: reset counter when enter into unattached state after try role usb: typec: tcpm: set initial svdm version based on pd revision USB: serial: option: add FOXCONN T99W368/T99W373 product USB: serial: option: add Quectel EM05G variant (0x030e) usb: dwc2: add pci_device_id driver_data parse support usb: gadget: remove max support speed info in bind operation usb: gadget: composite: cleanup function config_ep_by_speed_and_alt() usb: gadget: config: remove max speed check in usb_assign_descriptors() usb: gadget: unconditionally allocate hs/ss descriptor in bind operation usb: gadget: f_uvc: change endpoint allocation in uvc_function_bind() usb: gadget: add a inline function gether_bitrate() usb: gadget: use working speed to calcaulate network bitrate and qlen dt-bindings: usb: samsung,exynos-dwc3: Add Exynos850 support usb: dwc3: exynos: Add support for Exynos850 variant usb: gadget: udc-xilinx: fix incorrect type in assignment warning usb: gadget: udc-xilinx: fix cast from restricted __le16 warning usb: gadget: udc-xilinx: fix restricted __le16 degrades to integer warning USB: dwc2: hande irq on dead controller correctly ...
Diffstat (limited to 'arch/mips/cavium-octeon')
-rw-r--r--arch/mips/cavium-octeon/Makefile1
-rw-r--r--arch/mips/cavium-octeon/octeon-platform.c1
-rw-r--r--arch/mips/cavium-octeon/octeon-usb.c551
3 files changed, 0 insertions, 553 deletions
diff --git a/arch/mips/cavium-octeon/Makefile b/arch/mips/cavium-octeon/Makefile
index 7c02e542959a..2a5926578841 100644
--- a/arch/mips/cavium-octeon/Makefile
+++ b/arch/mips/cavium-octeon/Makefile
@@ -18,4 +18,3 @@ obj-y += crypto/
obj-$(CONFIG_MTD) += flash_setup.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_OCTEON_ILM) += oct_ilm.o
-obj-$(CONFIG_USB) += octeon-usb.o
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index ce05c0dd3acd..235c77ce7b18 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -450,7 +450,6 @@ static const struct of_device_id octeon_ids[] __initconst = {
{ .compatible = "cavium,octeon-3860-bootbus", },
{ .compatible = "cavium,mdio-mux", },
{ .compatible = "gpio-leds", },
- { .compatible = "cavium,octeon-7130-usb-uctl", },
{},
};
diff --git a/arch/mips/cavium-octeon/octeon-usb.c b/arch/mips/cavium-octeon/octeon-usb.c
deleted file mode 100644
index 2add435ad038..000000000000
--- a/arch/mips/cavium-octeon/octeon-usb.c
+++ /dev/null
@@ -1,551 +0,0 @@
-/*
- * XHCI HCD glue for Cavium Octeon III SOCs.
- *
- * Copyright (C) 2010-2017 Cavium Networks
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/bitfield.h>
-#include <linux/bits.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/of_platform.h>
-
-/*
- * USB Control Register
- */
-#define USBDRD_UCTL_CTL 0x00
-/* BIST fast-clear mode select. A BIST run with this bit set
- * clears all entries in USBH RAMs to 0x0.
- */
-# define USBDRD_UCTL_CTL_CLEAR_BIST BIT(63)
-/* 1 = Start BIST and cleared by hardware */
-# define USBDRD_UCTL_CTL_START_BIST BIT(62)
-/* Reference clock select for SuperSpeed and HighSpeed PLLs:
- * 0x0 = Both PLLs use DLMC_REF_CLK0 for reference clock
- * 0x1 = Both PLLs use DLMC_REF_CLK1 for reference clock
- * 0x2 = SuperSpeed PLL uses DLMC_REF_CLK0 for reference clock &
- * HighSpeed PLL uses PLL_REF_CLK for reference clck
- * 0x3 = SuperSpeed PLL uses DLMC_REF_CLK1 for reference clock &
- * HighSpeed PLL uses PLL_REF_CLK for reference clck
- */
-# define USBDRD_UCTL_CTL_REF_CLK_SEL GENMASK(61, 60)
-/* 1 = Spread-spectrum clock enable, 0 = SS clock disable */
-# define USBDRD_UCTL_CTL_SSC_EN BIT(59)
-/* Spread-spectrum clock modulation range:
- * 0x0 = -4980 ppm downspread
- * 0x1 = -4492 ppm downspread
- * 0x2 = -4003 ppm downspread
- * 0x3 - 0x7 = Reserved
- */
-# define USBDRD_UCTL_CTL_SSC_RANGE GENMASK(58, 56)
-/* Enable non-standard oscillator frequencies:
- * [55:53] = modules -1
- * [52:47] = 2's complement push amount, 0 = Feature disabled
- */
-# define USBDRD_UCTL_CTL_SSC_REF_CLK_SEL GENMASK(55, 47)
-/* Reference clock multiplier for non-standard frequencies:
- * 0x19 = 100MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1
- * 0x28 = 125MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1
- * 0x32 = 50MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1
- * Other Values = Reserved
- */
-# define USBDRD_UCTL_CTL_MPLL_MULTIPLIER GENMASK(46, 40)
-/* Enable reference clock to prescaler for SuperSpeed functionality.
- * Should always be set to "1"
- */
-# define USBDRD_UCTL_CTL_REF_SSP_EN BIT(39)
-/* Divide the reference clock by 2 before entering the
- * REF_CLK_FSEL divider:
- * If REF_CLK_SEL = 0x0 or 0x1, then only 0x0 is legal
- * If REF_CLK_SEL = 0x2 or 0x3, then:
- * 0x1 = DLMC_REF_CLK* is 125MHz
- * 0x0 = DLMC_REF_CLK* is another supported frequency
- */
-# define USBDRD_UCTL_CTL_REF_CLK_DIV2 BIT(38)
-/* Select reference clock freqnuency for both PLL blocks:
- * 0x27 = REF_CLK_SEL is 0x0 or 0x1
- * 0x07 = REF_CLK_SEL is 0x2 or 0x3
- */
-# define USBDRD_UCTL_CTL_REF_CLK_FSEL GENMASK(37, 32)
-/* Controller clock enable. */
-# define USBDRD_UCTL_CTL_H_CLK_EN BIT(30)
-/* Select bypass input to controller clock divider:
- * 0x0 = Use divided coprocessor clock from H_CLKDIV
- * 0x1 = Use clock from GPIO pins
- */
-# define USBDRD_UCTL_CTL_H_CLK_BYP_SEL BIT(29)
-/* Reset controller clock divider. */
-# define USBDRD_UCTL_CTL_H_CLKDIV_RST BIT(28)
-/* Clock divider select:
- * 0x0 = divide by 1
- * 0x1 = divide by 2
- * 0x2 = divide by 4
- * 0x3 = divide by 6
- * 0x4 = divide by 8
- * 0x5 = divide by 16
- * 0x6 = divide by 24
- * 0x7 = divide by 32
- */
-# define USBDRD_UCTL_CTL_H_CLKDIV_SEL GENMASK(26, 24)
-/* USB3 port permanently attached: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_USB3_PORT_PERM_ATTACH BIT(21)
-/* USB2 port permanently attached: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_USB2_PORT_PERM_ATTACH BIT(20)
-/* Disable SuperSpeed PHY: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_USB3_PORT_DISABLE BIT(18)
-/* Disable HighSpeed PHY: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_USB2_PORT_DISABLE BIT(16)
-/* Enable PHY SuperSpeed block power: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_SS_POWER_EN BIT(14)
-/* Enable PHY HighSpeed block power: 0x0 = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_HS_POWER_EN BIT(12)
-/* Enable USB UCTL interface clock: 0xx = No, 0x1 = Yes */
-# define USBDRD_UCTL_CTL_CSCLK_EN BIT(4)
-/* Controller mode: 0x0 = Host, 0x1 = Device */
-# define USBDRD_UCTL_CTL_DRD_MODE BIT(3)
-/* PHY reset */
-# define USBDRD_UCTL_CTL_UPHY_RST BIT(2)
-/* Software reset UAHC */
-# define USBDRD_UCTL_CTL_UAHC_RST BIT(1)
-/* Software resets UCTL */
-# define USBDRD_UCTL_CTL_UCTL_RST BIT(0)
-
-#define USBDRD_UCTL_BIST_STATUS 0x08
-#define USBDRD_UCTL_SPARE0 0x10
-#define USBDRD_UCTL_INTSTAT 0x30
-#define USBDRD_UCTL_PORT_CFG_HS(port) (0x40 + (0x20 * port))
-#define USBDRD_UCTL_PORT_CFG_SS(port) (0x48 + (0x20 * port))
-#define USBDRD_UCTL_PORT_CR_DBG_CFG(port) (0x50 + (0x20 * port))
-#define USBDRD_UCTL_PORT_CR_DBG_STATUS(port) (0x58 + (0x20 * port))
-
-/*
- * UCTL Configuration Register
- */
-#define USBDRD_UCTL_HOST_CFG 0xe0
-/* Indicates minimum value of all received BELT values */
-# define USBDRD_UCTL_HOST_CFG_HOST_CURRENT_BELT GENMASK(59, 48)
-/* HS jitter adjustment */
-# define USBDRD_UCTL_HOST_CFG_FLA GENMASK(37, 32)
-/* Bus-master enable: 0x0 = Disabled (stall DMAs), 0x1 = enabled */
-# define USBDRD_UCTL_HOST_CFG_BME BIT(28)
-/* Overcurrent protection enable: 0x0 = unavailable, 0x1 = available */
-# define USBDRD_UCTL_HOST_OCI_EN BIT(27)
-/* Overcurrent sene selection:
- * 0x0 = Overcurrent indication from off-chip is active-low
- * 0x1 = Overcurrent indication from off-chip is active-high
- */
-# define USBDRD_UCTL_HOST_OCI_ACTIVE_HIGH_EN BIT(26)
-/* Port power control enable: 0x0 = unavailable, 0x1 = available */
-# define USBDRD_UCTL_HOST_PPC_EN BIT(25)
-/* Port power control sense selection:
- * 0x0 = Port power to off-chip is active-low
- * 0x1 = Port power to off-chip is active-high
- */
-# define USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN BIT(24)
-
-/*
- * UCTL Shim Features Register
- */
-#define USBDRD_UCTL_SHIM_CFG 0xe8
-/* Out-of-bound UAHC register access: 0 = read, 1 = write */
-# define USBDRD_UCTL_SHIM_CFG_XS_NCB_OOB_WRN BIT(63)
-/* SRCID error log for out-of-bound UAHC register access:
- * [59:58] = chipID
- * [57] = Request source: 0 = core, 1 = NCB-device
- * [56:51] = Core/NCB-device number, [56] always 0 for NCB devices
- * [50:48] = SubID
- */
-# define USBDRD_UCTL_SHIM_CFG_XS_NCB_OOB_OSRC GENMASK(59, 48)
-/* Error log for bad UAHC DMA access: 0 = Read log, 1 = Write log */
-# define USBDRD_UCTL_SHIM_CFG_XM_BAD_DMA_WRN BIT(47)
-/* Encoded error type for bad UAHC DMA */
-# define USBDRD_UCTL_SHIM_CFG_XM_BAD_DMA_TYPE GENMASK(43, 40)
-/* Select the IOI read command used by DMA accesses */
-# define USBDRD_UCTL_SHIM_CFG_DMA_READ_CMD BIT(12)
-/* Select endian format for DMA accesses to the L2C:
- * 0x0 = Little endian
- * 0x1 = Big endian
- * 0x2 = Reserved
- * 0x3 = Reserved
- */
-# define USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE GENMASK(9, 8)
-/* Select endian format for IOI CSR access to UAHC:
- * 0x0 = Little endian
- * 0x1 = Big endian
- * 0x2 = Reserved
- * 0x3 = Reserved
- */
-# define USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE GENMASK(1, 0)
-
-#define USBDRD_UCTL_ECC 0xf0
-#define USBDRD_UCTL_SPARE1 0xf8
-
-static DEFINE_MUTEX(dwc3_octeon_clocks_mutex);
-
-#ifdef CONFIG_CAVIUM_OCTEON_SOC
-#include <asm/octeon/octeon.h>
-static inline uint64_t dwc3_octeon_readq(void __iomem *addr)
-{
- return cvmx_readq_csr(addr);
-}
-
-static inline void dwc3_octeon_writeq(void __iomem *base, uint64_t val)
-{
- cvmx_writeq_csr(base, val);
-}
-
-static void dwc3_octeon_config_gpio(int index, int gpio)
-{
- union cvmx_gpio_bit_cfgx gpio_bit;
-
- if ((OCTEON_IS_MODEL(OCTEON_CN73XX) ||
- OCTEON_IS_MODEL(OCTEON_CNF75XX))
- && gpio <= 31) {
- gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_BIT_CFGX(gpio));
- gpio_bit.s.tx_oe = 1;
- gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x15);
- cvmx_write_csr(CVMX_GPIO_BIT_CFGX(gpio), gpio_bit.u64);
- } else if (gpio <= 15) {
- gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_BIT_CFGX(gpio));
- gpio_bit.s.tx_oe = 1;
- gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x19);
- cvmx_write_csr(CVMX_GPIO_BIT_CFGX(gpio), gpio_bit.u64);
- } else {
- gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_XBIT_CFGX(gpio));
- gpio_bit.s.tx_oe = 1;
- gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x19);
- cvmx_write_csr(CVMX_GPIO_XBIT_CFGX(gpio), gpio_bit.u64);
- }
-}
-#else
-static inline uint64_t dwc3_octeon_readq(void __iomem *addr)
-{
- return 0;
-}
-
-static inline void dwc3_octeon_writeq(void __iomem *base, uint64_t val) { }
-
-static inline void dwc3_octeon_config_gpio(int index, int gpio) { }
-#endif
-
-static int dwc3_octeon_get_divider(void)
-{
- static const uint8_t clk_div[] = { 1, 2, 4, 6, 8, 16, 24, 32 };
- int div = 0;
-
- while (div < ARRAY_SIZE(clk_div)) {
- uint64_t rate = octeon_get_io_clock_rate() / clk_div[div];
- if (rate <= 300000000 && rate >= 150000000)
- break;
- div++;
- }
-
- return div;
-}
-
-static int dwc3_octeon_config_power(struct device *dev, void __iomem *base)
-{
- uint32_t gpio_pwr[3];
- int gpio, len, power_active_low;
- struct device_node *node = dev->of_node;
- u64 val;
- void __iomem *uctl_host_cfg_reg = base + USBDRD_UCTL_HOST_CFG;
-
- if (of_find_property(node, "power", &len) != NULL) {
- if (len == 12) {
- of_property_read_u32_array(node, "power", gpio_pwr, 3);
- power_active_low = gpio_pwr[2] & 0x01;
- gpio = gpio_pwr[1];
- } else if (len == 8) {
- of_property_read_u32_array(node, "power", gpio_pwr, 2);
- power_active_low = 0;
- gpio = gpio_pwr[1];
- } else {
- dev_err(dev, "invalid power configuration\n");
- return -EINVAL;
- }
- dwc3_octeon_config_gpio(((u64)base >> 24) & 1, gpio);
-
- /* Enable XHCI power control and set if active high or low. */
- val = dwc3_octeon_readq(uctl_host_cfg_reg);
- val |= USBDRD_UCTL_HOST_PPC_EN;
- if (power_active_low)
- val &= ~USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN;
- else
- val |= USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN;
- dwc3_octeon_writeq(uctl_host_cfg_reg, val);
- } else {
- /* Disable XHCI power control and set if active high. */
- val = dwc3_octeon_readq(uctl_host_cfg_reg);
- val &= ~USBDRD_UCTL_HOST_PPC_EN;
- val &= ~USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN;
- dwc3_octeon_writeq(uctl_host_cfg_reg, val);
- dev_info(dev, "power control disabled\n");
- }
- return 0;
-}
-
-static int dwc3_octeon_clocks_start(struct device *dev, void __iomem *base)
-{
- int i, div, mpll_mul, ref_clk_fsel, ref_clk_sel = 2;
- u32 clock_rate;
- u64 val;
- void __iomem *uctl_ctl_reg = base + USBDRD_UCTL_CTL;
-
- if (dev->of_node) {
- const char *ss_clock_type;
- const char *hs_clock_type;
-
- i = of_property_read_u32(dev->of_node,
- "refclk-frequency", &clock_rate);
- if (i) {
- dev_err(dev, "No UCTL \"refclk-frequency\"\n");
- return -EINVAL;
- }
- i = of_property_read_string(dev->of_node,
- "refclk-type-ss", &ss_clock_type);
- if (i) {
- dev_err(dev, "No UCTL \"refclk-type-ss\"\n");
- return -EINVAL;
- }
- i = of_property_read_string(dev->of_node,
- "refclk-type-hs", &hs_clock_type);
- if (i) {
- dev_err(dev, "No UCTL \"refclk-type-hs\"\n");
- return -EINVAL;
- }
- if (strcmp("dlmc_ref_clk0", ss_clock_type) == 0) {
- if (strcmp(hs_clock_type, "dlmc_ref_clk0") == 0)
- ref_clk_sel = 0;
- else if (strcmp(hs_clock_type, "pll_ref_clk") == 0)
- ref_clk_sel = 2;
- else
- dev_warn(dev, "Invalid HS clock type %s, using pll_ref_clk instead\n",
- hs_clock_type);
- } else if (strcmp(ss_clock_type, "dlmc_ref_clk1") == 0) {
- if (strcmp(hs_clock_type, "dlmc_ref_clk1") == 0)
- ref_clk_sel = 1;
- else if (strcmp(hs_clock_type, "pll_ref_clk") == 0)
- ref_clk_sel = 3;
- else {
- dev_warn(dev, "Invalid HS clock type %s, using pll_ref_clk instead\n",
- hs_clock_type);
- ref_clk_sel = 3;
- }
- } else
- dev_warn(dev, "Invalid SS clock type %s, using dlmc_ref_clk0 instead\n",
- ss_clock_type);
-
- if ((ref_clk_sel == 0 || ref_clk_sel == 1) &&
- (clock_rate != 100000000))
- dev_warn(dev, "Invalid UCTL clock rate of %u, using 100000000 instead\n",
- clock_rate);
-
- } else {
- dev_err(dev, "No USB UCTL device node\n");
- return -EINVAL;
- }
-
- /*
- * Step 1: Wait for all voltages to be stable...that surely
- * happened before starting the kernel. SKIP
- */
-
- /* Step 2: Select GPIO for overcurrent indication, if desired. SKIP */
-
- /* Step 3: Assert all resets. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val |= USBDRD_UCTL_CTL_UPHY_RST |
- USBDRD_UCTL_CTL_UAHC_RST |
- USBDRD_UCTL_CTL_UCTL_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 4a: Reset the clock dividers. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val |= USBDRD_UCTL_CTL_H_CLKDIV_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 4b: Select controller clock frequency. */
- div = dwc3_octeon_get_divider();
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_H_CLKDIV_SEL;
- val |= FIELD_PREP(USBDRD_UCTL_CTL_H_CLKDIV_SEL, div);
- val |= USBDRD_UCTL_CTL_H_CLK_EN;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
- val = dwc3_octeon_readq(uctl_ctl_reg);
- if ((div != FIELD_GET(USBDRD_UCTL_CTL_H_CLKDIV_SEL, val)) ||
- (!(FIELD_GET(USBDRD_UCTL_CTL_H_CLK_EN, val)))) {
- dev_err(dev, "dwc3 controller clock init failure.\n");
- return -EINVAL;
- }
-
- /* Step 4c: Deassert the controller clock divider reset. */
- val &= ~USBDRD_UCTL_CTL_H_CLKDIV_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 5a: Reference clock configuration. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_REF_CLK_DIV2;
- val &= ~USBDRD_UCTL_CTL_REF_CLK_SEL;
- val |= FIELD_PREP(USBDRD_UCTL_CTL_REF_CLK_SEL, ref_clk_sel);
-
- ref_clk_fsel = 0x07;
- switch (clock_rate) {
- default:
- dev_warn(dev, "Invalid ref_clk %u, using 100000000 instead\n",
- clock_rate);
- fallthrough;
- case 100000000:
- mpll_mul = 0x19;
- if (ref_clk_sel < 2)
- ref_clk_fsel = 0x27;
- break;
- case 50000000:
- mpll_mul = 0x32;
- break;
- case 125000000:
- mpll_mul = 0x28;
- break;
- }
- val &= ~USBDRD_UCTL_CTL_REF_CLK_FSEL;
- val |= FIELD_PREP(USBDRD_UCTL_CTL_REF_CLK_FSEL, ref_clk_fsel);
-
- val &= ~USBDRD_UCTL_CTL_MPLL_MULTIPLIER;
- val |= FIELD_PREP(USBDRD_UCTL_CTL_MPLL_MULTIPLIER, mpll_mul);
-
- /* Step 5b: Configure and enable spread-spectrum for SuperSpeed. */
- val |= USBDRD_UCTL_CTL_SSC_EN;
-
- /* Step 5c: Enable SuperSpeed. */
- val |= USBDRD_UCTL_CTL_REF_SSP_EN;
-
- /* Step 5d: Configure PHYs. SKIP */
-
- /* Step 6a & 6b: Power up PHYs. */
- val |= USBDRD_UCTL_CTL_HS_POWER_EN;
- val |= USBDRD_UCTL_CTL_SS_POWER_EN;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 7: Wait 10 controller-clock cycles to take effect. */
- udelay(10);
-
- /* Step 8a: Deassert UCTL reset signal. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_UCTL_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 8b: Wait 10 controller-clock cycles. */
- udelay(10);
-
- /* Steo 8c: Setup power-power control. */
- if (dwc3_octeon_config_power(dev, base))
- return -EINVAL;
-
- /* Step 8d: Deassert UAHC reset signal. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_UAHC_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /* Step 8e: Wait 10 controller-clock cycles. */
- udelay(10);
-
- /* Step 9: Enable conditional coprocessor clock of UCTL. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val |= USBDRD_UCTL_CTL_CSCLK_EN;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- /*Step 10: Set for host mode only. */
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_DRD_MODE;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-
- return 0;
-}
-
-static void __init dwc3_octeon_set_endian_mode(void __iomem *base)
-{
- u64 val;
- void __iomem *uctl_shim_cfg_reg = base + USBDRD_UCTL_SHIM_CFG;
-
- val = dwc3_octeon_readq(uctl_shim_cfg_reg);
- val &= ~USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE;
- val &= ~USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE;
-#ifdef __BIG_ENDIAN
- val |= FIELD_PREP(USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE, 1);
- val |= FIELD_PREP(USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE, 1);
-#endif
- dwc3_octeon_writeq(uctl_shim_cfg_reg, val);
-}
-
-static void __init dwc3_octeon_phy_reset(void __iomem *base)
-{
- u64 val;
- void __iomem *uctl_ctl_reg = base + USBDRD_UCTL_CTL;
-
- val = dwc3_octeon_readq(uctl_ctl_reg);
- val &= ~USBDRD_UCTL_CTL_UPHY_RST;
- dwc3_octeon_writeq(uctl_ctl_reg, val);
-}
-
-static int __init dwc3_octeon_device_init(void)
-{
- const char compat_node_name[] = "cavium,octeon-7130-usb-uctl";
- struct platform_device *pdev;
- struct device_node *node;
- struct resource *res;
- void __iomem *base;
-
- /*
- * There should only be three universal controllers, "uctl"
- * in the device tree. Two USB and a SATA, which we ignore.
- */
- node = NULL;
- do {
- node = of_find_node_by_name(node, "uctl");
- if (!node)
- return -ENODEV;
-
- if (of_device_is_compatible(node, compat_node_name)) {
- pdev = of_find_device_by_node(node);
- if (!pdev)
- return -ENODEV;
-
- /*
- * The code below maps in the registers necessary for
- * setting up the clocks and reseting PHYs. We must
- * release the resources so the dwc3 subsystem doesn't
- * know the difference.
- */
- base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
- if (IS_ERR(base)) {
- put_device(&pdev->dev);
- return PTR_ERR(base);
- }
-
- mutex_lock(&dwc3_octeon_clocks_mutex);
- if (dwc3_octeon_clocks_start(&pdev->dev, base) == 0)
- dev_info(&pdev->dev, "clocks initialized.\n");
- dwc3_octeon_set_endian_mode(base);
- dwc3_octeon_phy_reset(base);
- mutex_unlock(&dwc3_octeon_clocks_mutex);
- devm_iounmap(&pdev->dev, base);
- devm_release_mem_region(&pdev->dev, res->start,
- resource_size(res));
- put_device(&pdev->dev);
- }
- } while (node != NULL);
-
- return 0;
-}
-device_initcall(dwc3_octeon_device_init);
-
-MODULE_AUTHOR("David Daney <david.daney@cavium.com>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("USB driver for OCTEON III SoC");