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https://github.com/brain-hackers/u-boot-brain
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7411cdf0e2
This function turns on the LCDIF clock and configures it's frequency. The dividers settings are calculated within the function and the current implementation should be fast and accurate. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Otavio Salvador <otavio@ossystems.com.br> Cc: Stefano Babic <sbabic@denx.de>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
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* Freescale i.MX23/i.MX28 Clock
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*
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* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
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* on behalf of DENX Software Engineering GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __CLOCK_H__
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#define __CLOCK_H__
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enum mxc_clock {
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MXC_ARM_CLK = 0,
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MXC_AHB_CLK,
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MXC_IPG_CLK,
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MXC_EMI_CLK,
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MXC_GPMI_CLK,
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MXC_IO0_CLK,
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MXC_IO1_CLK,
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MXC_XTAL_CLK,
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MXC_SSP0_CLK,
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#ifdef CONFIG_MX28
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MXC_SSP1_CLK,
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MXC_SSP2_CLK,
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MXC_SSP3_CLK,
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#endif
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};
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enum mxs_ioclock {
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MXC_IOCLK0 = 0,
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MXC_IOCLK1,
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};
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enum mxs_sspclock {
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MXC_SSPCLK0 = 0,
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#ifdef CONFIG_MX28
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MXC_SSPCLK1,
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MXC_SSPCLK2,
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MXC_SSPCLK3,
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#endif
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};
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uint32_t mxc_get_clock(enum mxc_clock clk);
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void mxs_set_ioclk(enum mxs_ioclock io, uint32_t freq);
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void mxs_set_sspclk(enum mxs_sspclock ssp, uint32_t freq, int xtal);
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void mxs_set_ssp_busclock(unsigned int bus, uint32_t freq);
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void mxs_set_lcdclk(uint32_t freq);
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/* Compatibility with the FEC Ethernet driver */
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#define imx_get_fecclk() mxc_get_clock(MXC_AHB_CLK)
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#endif /* __CLOCK_H__ */
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