| /* |
| * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of Code Aurora nor |
| * the names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior written |
| * permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <debug.h> |
| #include <reg.h> |
| #include <platform/iomap.h> |
| |
| /* NS/MD value for USB XCVR */ |
| #define MSM_BOOT_USB_XCVR_NS_VAL 0x00E400C3 |
| #define MSM_BOOT_USB_XCVR_MD_VAL 0x000500DF |
| |
| |
| /* Set rate and enable the clock */ |
| void clock_config(uint32_t ns, |
| uint32_t md, |
| uint32_t ns_addr, |
| uint32_t md_addr) |
| { |
| unsigned int val = 0; |
| |
| /* Activate the reset for the M/N Counter */ |
| val = 1 << 7; |
| writel(val, ns_addr); |
| |
| /* Write the MD value into the MD register */ |
| writel(md, md_addr); |
| |
| /* Write the ns value, and active reset for M/N Counter, again */ |
| val = 1 << 7; |
| val |= ns; |
| writel(val, ns_addr); |
| |
| /* De-activate the reset for M/N Counter */ |
| val = 1 << 7; |
| val = ~val; |
| val = val & readl(ns_addr); |
| writel(val, ns_addr); |
| |
| /* Enable the Clock Root */ |
| val = 1 << 11; |
| val = val | readl(ns_addr); |
| writel(val, ns_addr); |
| |
| /* Enable the Clock Branch */ |
| val = 1 << 9; |
| val = val | readl(ns_addr); |
| writel(val, ns_addr); |
| |
| /* Enable the M/N Counter */ |
| val = 1 << 8; |
| val = val | readl(ns_addr); |
| writel(val, ns_addr); |
| } |
| |
| void pll8_enable(void) |
| { |
| unsigned int curr_value = 0; |
| |
| /* Vote for PLL8 to be enabled */ |
| curr_value = readl(MSM_BOOT_PLL_ENABLE_SC0); |
| curr_value |= (1 << 8); |
| writel(curr_value, MSM_BOOT_PLL_ENABLE_SC0); |
| |
| /* Proceed only after PLL is enabled */ |
| while (!(readl(MSM_BOOT_PLL8_STATUS) & (1<<16))); |
| } |
| |
| void hsusb_clock_init(void) |
| { |
| /* TODO: Enable pll8 here */ |
| /* Setup USB AHB clock */ |
| |
| /* Setup XCVR clock */ |
| clock_config(MSM_BOOT_USB_XCVR_NS_VAL, |
| MSM_BOOT_USB_XCVR_MD_VAL, |
| USB_HS1_XCVR_FS_CLK_NS, |
| USB_HS1_XCVR_FS_CLK_MD); |
| } |