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2f8a6db5d8
In order to finish moving this symbol to Kconfig for all platforms, we need to do a few more things. First, for all platforms that define this to a function, introduce CONFIG_DYNAMIC_SYS_CLK_FREQ, similar to CONFIG_DYNAMIC_DDR_CLK_FREQ and populate clock_legacy.h. This entails also switching all users from CONFIG_SYS_CLK_FREQ to get_board_sys_clk() and updating a few preprocessor tests. With that done, all platforms that define a value here can be converted to Kconfig, and a fall-back of zero is sufficiently safe to use (and what is used today in cases where code may or may not have this available). Make sure that code which calls this function includes <clock_legacy.h> to get the prototype. Signed-off-by: Tom Rini <trini@konsulko.com>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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*
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* (c) 2004 Sascha Hauer <sascha@saschahauer.de>
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*/
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#include <common.h>
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#if defined (CONFIG_IMX)
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#include <clock_legacy.h>
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#include <asm/arch/imx-regs.h>
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/* ------------------------------------------------------------------------- */
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/* NOTE: This describes the proper use of this file.
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*
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* get_board_sys_clk() should be defined as the input frequency of the PLL.
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* SH FIXME: 16780000 in our case
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* get_FCLK(), get_HCLK(), get_PCLK() and get_UCLK() return the clock of
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* the specified bus in HZ.
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*/
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/* ------------------------------------------------------------------------- */
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ulong get_systemPLLCLK(void)
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{
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/* FIXME: We assume System_SEL = 0 here */
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u32 spctl0 = SPCTL0;
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u32 mfi = (spctl0 >> 10) & 0xf;
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u32 mfn = spctl0 & 0x3f;
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u32 mfd = (spctl0 >> 16) & 0x3f;
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u32 pd = (spctl0 >> 26) & 0xf;
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mfi = mfi<=5 ? 5 : mfi;
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return (2*(CONFIG_SYSPLL_CLK_FREQ>>10)*( (mfi<<10) + (mfn<<10)/(mfd+1)))/(pd+1);
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}
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ulong get_mcuPLLCLK(void)
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{
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/* FIXME: We assume System_SEL = 0 here */
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u32 mpctl0 = MPCTL0;
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u32 mfi = (mpctl0 >> 10) & 0xf;
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u32 mfn = mpctl0 & 0x3f;
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u32 mfd = (mpctl0 >> 16) & 0x3f;
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u32 pd = (mpctl0 >> 26) & 0xf;
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mfi = mfi<=5 ? 5 : mfi;
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return (2*(get_board_sys_clk()>>10)*( (mfi<<10) + (mfn<<10)/(mfd+1)))/(pd+1);
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}
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ulong get_FCLK(void)
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{
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return (( CSCR>>15)&1) ? get_mcuPLLCLK()>>1 : get_mcuPLLCLK();
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}
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/* return HCLK frequency */
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ulong get_HCLK(void)
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{
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u32 bclkdiv = (( CSCR >> 10 ) & 0xf) + 1;
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printf("bclkdiv: %d\n", bclkdiv);
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return get_systemPLLCLK() / bclkdiv;
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}
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/* return BCLK frequency */
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ulong get_BCLK(void)
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{
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return get_HCLK();
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}
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ulong get_PERCLK1(void)
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{
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return get_systemPLLCLK() / (((PCDR) & 0xf)+1);
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}
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ulong get_PERCLK2(void)
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{
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return get_systemPLLCLK() / (((PCDR>>4) & 0xf)+1);
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}
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ulong get_PERCLK3(void)
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{
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return get_systemPLLCLK() / (((PCDR>>16) & 0x7f)+1);
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}
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#endif /* defined (CONFIG_IMX) */
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