104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
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/*
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Linux Foundation nor
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* the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <err.h>
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#include <assert.h>
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#include <debug.h>
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#include <reg.h>
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#include <clock.h>
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#include <platform/clock.h>
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#include <platform/iomap.h>
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#include <platform/timer.h>
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void hsusb_clock_init(void)
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{
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int ret;
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struct clk *iclk;
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struct clk *cclk;
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iclk = clk_get("usb_iface_clk");
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cclk = clk_get("usb_core_clk");
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ASSERT(iclk);
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ASSERT(cclk);
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/* Disable interface and core clk */
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clk_disable(iclk);
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clk_disable(cclk);
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/* Start the block reset for usb */
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writel(1, USB_HS_BCR);
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/* Take usb block out of reset */
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writel(0, USB_HS_BCR);
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ret = clk_enable(iclk);
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if(ret)
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{
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dprintf(CRITICAL, "failed to set usb_iface_clk ret = %d\n", ret);
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ASSERT(0);
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}
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ret = clk_set_rate(cclk, 75000000);
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if(ret)
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{
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dprintf(CRITICAL, "failed to set_rate of usb_core_clk ret = %d\n", ret);
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ASSERT(0);
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}
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ret = clk_enable(cclk);
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if(ret)
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{
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dprintf(CRITICAL, "failed to enable usb_core_clk ret = %d\n", ret);
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ASSERT(0);
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}
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}
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void clock_config_uart_dm(uint8_t id)
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{
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int ret;
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char clk_name[64];
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ret = clk_get_set_enable("uart_iface_clk", 0, 1);
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if (ret)
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{
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dprintf(CRITICAL, "failed to set uart_iface_clk ret = %d\n", ret);
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ASSERT(0);
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}
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snprintf(clk_name, 64, "uart%u_core_clk", id);
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ret = clk_get_set_enable(clk_name, 7372800, 1);
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if (ret)
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{
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dprintf(CRITICAL, "failed to set uart%u_core_clk ret = %d\n", id, ret);
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ASSERT(0);
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}
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}
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