| /* |
| * Copyright (c) 2013-2014, The Linux Foundation. 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 Linux Foundation 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 <err.h> |
| #include <assert.h> |
| #include <debug.h> |
| #include <reg.h> |
| #include <clock.h> |
| #include <pm8x41.h> |
| #include <platform/clock.h> |
| #include <platform/iomap.h> |
| #include <platform/timer.h> |
| |
| void hsusb_clock_init(void) |
| { |
| int ret; |
| struct clk *iclk; |
| struct clk *cclk; |
| |
| iclk = clk_get("usb_iface_clk"); |
| cclk = clk_get("usb_core_clk"); |
| |
| ASSERT(iclk); |
| ASSERT(cclk); |
| |
| /* Disable interface and core clk */ |
| clk_disable(iclk); |
| clk_disable(cclk); |
| |
| /* Start the block reset for usb */ |
| writel(1, USB_HS_BCR); |
| |
| /* Take usb block out of reset */ |
| writel(0, USB_HS_BCR); |
| |
| ret = clk_enable(iclk); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_iface_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_set_rate(cclk, 75000000); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set_rate of usb_core_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_enable(cclk); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to enable usb_core_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |
| |
| void clock_config_uart_dm(uint8_t id) |
| { |
| int ret; |
| char clk_name[64]; |
| |
| ret = clk_get_set_enable("uart_iface_clk", 0, 1); |
| if (ret) |
| { |
| dprintf(CRITICAL, "failed to set uart_iface_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| snprintf(clk_name, 64, "uart%u_core_clk", id); |
| |
| ret = clk_get_set_enable(clk_name, 7372800, 1); |
| if (ret) |
| { |
| dprintf(CRITICAL, "failed to set uart%u_core_clk ret = %d\n", id, ret); |
| ASSERT(0); |
| } |
| } |
| |
| /* |
| * Disable power collapse using GDSCR: |
| * Globally Distributed Switch Controller Register |
| */ |
| void clock_usb30_gdsc_enable(void) |
| { |
| uint32_t reg = readl(GCC_USB30_GDSCR); |
| |
| reg &= ~(0x1); |
| |
| writel(reg, GCC_USB30_GDSCR); |
| } |
| |
| /* enables usb30 clocks */ |
| void clock_usb30_init(void) |
| { |
| int ret; |
| |
| ret = clk_get_set_enable("usb30_iface_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_iface_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| clock_usb30_gdsc_enable(); |
| |
| ret = clk_get_set_enable("usb30_master_clk", 125000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_master_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb30_pipe_clk", 19200000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb30_aux_clk", 1000000, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_aux_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| ret = clk_get_set_enable("usb_phy_cfg_ahb_clk", 0, 1); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb_phy_cfg_ahb_clk ret = %d\n", ret); |
| ASSERT(0); |
| } |
| |
| pm8x41_lnbb_clock_ctrl(1); |
| } |
| |
| void clock_bumpup_pipe3_clk() |
| { |
| int ret = 0; |
| |
| ret = clk_get_set_enable("usb30_pipe_clk", 125000000, 0); |
| if(ret) |
| { |
| dprintf(CRITICAL, "failed to set usb30_pipe_clk. ret = %d\n", ret); |
| ASSERT(0); |
| } |
| } |