board/freescale/s32v234evb/clock.c - platform/external/u-boot - Gitiles

 /*
  * (C) Copyright 2015, Freescale Semiconductor, Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/mc_cgm_regs.h>
 #include <asm/arch/mc_me_regs.h>
 #include <asm/arch/clock.h>

 /*
  * Select the clock reference for required pll.
  * pll - ARM_PLL, PERIPH_PLL, ENET_PLL, DDR_PLL, VIDEO_PLL.
  * refclk_freq - input referece clock frequency (FXOSC - 40 MHZ, FIRC - 48 MHZ)
  */
 static int select_pll_source_clk(enum pll_type pll, u32 refclk_freq)
 {
 	u32 clk_src;
 	u32 pll_idx;
 	volatile struct src *src = (struct src *)SRC_SOC_BASE_ADDR;

 	/* select the pll clock source */
 	switch (refclk_freq) {
 	case FIRC_CLK_FREQ:
 		clk_src = SRC_GPR1_FIRC_CLK_SOURCE;
 		break;
 	case XOSC_CLK_FREQ:
 		clk_src = SRC_GPR1_XOSC_CLK_SOURCE;
 		break;
 	default:
 		/* The clock frequency for the source clock is unknown */
 		return -1;
 	}
 	/*
 	 * The hardware definition is not uniform, it has to calculate again
 	 * the recurrence formula.
 	 */
 	switch (pll) {
 	case PERIPH_PLL:
 		pll_idx = 3;
 		break;
 	case ENET_PLL:
 		pll_idx = 1;
 		break;
 	case DDR_PLL:
 		pll_idx = 2;
 		break;
 	default:
 		pll_idx = pll;
 	}

 	writel(readl(&src->gpr1) | SRC_GPR1_PLL_SOURCE(pll_idx, clk_src),
 	       &src->gpr1);

 	return 0;
 }

 static void entry_to_target_mode(u32 mode)
 {
 	writel(mode | MC_ME_MCTL_KEY, MC_ME_MCTL);
 	writel(mode | MC_ME_MCTL_INVERTEDKEY, MC_ME_MCTL);
 	while ((readl(MC_ME_GS) & MC_ME_GS_S_MTRANS) != 0x00000000) ;
 }

 /*
  * Program the pll according to the input parameters.
  * pll - ARM_PLL, PERIPH_PLL, ENET_PLL, DDR_PLL, VIDEO_PLL.
  * refclk_freq - input reference clock frequency (FXOSC - 40 MHZ, FIRC - 48 MHZ)
  * freq - expected output frequency for PHY0
  * freq1 - expected output frequency for PHY1
  * dfs_nr - number of DFS modules for current PLL
  * dfs - array with the activation dfs field, mfn and mfi
  * plldv_prediv - divider of clkfreq_ref
  * plldv_mfd - loop multiplication factor divider
  * pllfd_mfn - numerator loop multiplication factor divider
  * Please consult the PLLDIG chapter of platform manual
  * before to use this function.
  *)
  */
 static int program_pll(enum pll_type pll, u32 refclk_freq, u32 freq0, u32 freq1,
 		       u32 dfs_nr, u32 dfs[][DFS_PARAMS_Nr], u32 plldv_prediv,
 		       u32 plldv_mfd, u32 pllfd_mfn)
 {
 	u32 i, rfdphi1, rfdphi, dfs_on = 0, fvco;

 	/*
 	 * This formula is from platform reference manual (Rev. 1, 6/2015), PLLDIG chapter.
 	 */
 	fvco =
 	    (refclk_freq / plldv_prediv) * (plldv_mfd +
 					    pllfd_mfn / (float)20480);

 	/*
 	 * VCO should have value in [ PLL_MIN_FREQ, PLL_MAX_FREQ ]. Please consult
 	 * the platform DataSheet in order to determine the allowed values.
 	 */

 	if (fvco < PLL_MIN_FREQ || fvco > PLL_MAX_FREQ) {
 		return -1;
 	}

 	if (select_pll_source_clk(pll, refclk_freq) < 0) {
 		return -1;
 	}

 	rfdphi = fvco / freq0;

 	rfdphi1 = (freq1 == 0) ? 0 : fvco / freq1;

 	writel(PLLDIG_PLLDV_RFDPHI1_SET(rfdphi1) |
 	       PLLDIG_PLLDV_RFDPHI_SET(rfdphi) |
 	       PLLDIG_PLLDV_PREDIV_SET(plldv_prediv) |
 	       PLLDIG_PLLDV_MFD(plldv_mfd), PLLDIG_PLLDV(pll));

 	writel(readl(PLLDIG_PLLFD(pll)) | PLLDIG_PLLFD_MFN_SET(pllfd_mfn) |
 	       PLLDIG_PLLFD_SMDEN, PLLDIG_PLLFD(pll));

 	/* switch on the pll in current mode */
 	writel(readl(MC_ME_RUNn_MC(0)) | MC_ME_RUNMODE_MC_PLL(pll),
 	       MC_ME_RUNn_MC(0));

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 	/* Only ARM_PLL, ENET_PLL and DDR_PLL */
 	if ((pll == ARM_PLL) || (pll == ENET_PLL) || (pll == DDR_PLL)) {
 		/* DFS clk enable programming */
 		writel(DFS_CTRL_DLL_RESET, DFS_CTRL(pll));

 		writel(DFS_DLLPRG1_CPICTRL_SET(0x5) |
 		       DFS_DLLPRG1_VSETTLCTRL_SET(0x1) |
 		       DFS_DLLPRG1_CALBYPEN_SET(0x0) |
 		       DFS_DLLPRG1_DACIN_SET(0x1) | DFS_DLLPRG1_LCKWT_SET(0x0) |
 		       DFS_DLLPRG1_V2IGC_SET(0x5), DFS_DLLPRG1(pll));

 		for (i = 0; i < dfs_nr; i++) {
 			if (dfs[i][0]) {
 				writel(DFS_DVPORTn_MFI_SET(dfs[i][2]) |
 				       DFS_DVPORTn_MFN_SET(dfs[i][1]),
 				       DFS_DVPORTn(pll, i));
 				dfs_on |= (dfs[i][0] << i);
 			}
 		}

 		writel(readl(DFS_CTRL(pll)) & ~DFS_CTRL_DLL_RESET,
 		       DFS_CTRL(pll));
 		writel(readl(DFS_PORTRESET(pll)) &
 		       ~DFS_PORTRESET_PORTRESET_SET(dfs_on),
 		       DFS_PORTRESET(pll));
 		while ((readl(DFS_PORTSR(pll)) & dfs_on) != dfs_on) ;
 	}

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 	return 0;

 }

 static void aux_source_clk_config(uintptr_t cgm_addr, u8 ac, u32 source)
 {
 	/* select the clock source */
 	writel(MC_CGM_ACn_SEL_SET(source), CGM_ACn_SC(cgm_addr, ac));
 }

 static void aux_div_clk_config(uintptr_t cgm_addr, u8 ac, u8 dc, u32 divider)
 {
 	/* set the divider */
 	writel(MC_CGM_ACn_DCm_DE | MC_CGM_ACn_DCm_PREDIV(divider),
 	       CGM_ACn_DCm(cgm_addr, ac, dc));
 }

 static void setup_sys_clocks(void)
 {

 	/* set ARM PLL DFS 1 as SYSCLK */
 	writel((readl(MC_ME_RUNn_MC(0)) & ~MC_ME_RUNMODE_MC_SYSCLK_MASK) |
 	       MC_ME_RUNMODE_MC_SYSCLK(0x2), MC_ME_RUNn_MC(0));

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 	/* select sysclks  ARMPLL, ARMPLLDFS2, ARMPLLDFS3 */
 	writel(MC_ME_RUNMODE_SEC_CC_I_SYSCLK
 	       (0x2,
 		MC_ME_RUNMODE_SEC_CC_I_SYSCLK1_OFFSET) |
 	       MC_ME_RUNMODE_SEC_CC_I_SYSCLK(0x2,
 					     MC_ME_RUNMODE_SEC_CC_I_SYSCLK2_OFFSET)
 	       | MC_ME_RUNMODE_SEC_CC_I_SYSCLK(0x2,
 					       MC_ME_RUNMODE_SEC_CC_I_SYSCLK3_OFFSET),
 	       MC_ME_RUNn_SEC_CC_I(0));

 	/* setup the sys clock divider for CORE_CLK (1000MHz) */
 	writel(MC_CGM_SC_DCn_DE | MC_CGM_SC_DCn_PREDIV(0x0),
 	       CGM_SC_DCn(MC_CGM1_BASE_ADDR, 0));

 	/* setup the sys clock divider for CORE2_CLK (500MHz) */
 	writel(MC_CGM_SC_DCn_DE | MC_CGM_SC_DCn_PREDIV(0x1),
 	       CGM_SC_DCn(MC_CGM1_BASE_ADDR, 1));
 	/* setup the sys clock divider for SYS3_CLK (266 MHz) */
 	writel(MC_CGM_SC_DCn_DE | MC_CGM_SC_DCn_PREDIV(0x0),
 	       CGM_SC_DCn(MC_CGM0_BASE_ADDR, 0));

 	/* setup the sys clock divider for SYS6_CLK (133 Mhz) */
 	writel(MC_CGM_SC_DCn_DE | MC_CGM_SC_DCn_PREDIV(0x1),
 	       CGM_SC_DCn(MC_CGM0_BASE_ADDR, 1));

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 }

 static void setup_aux_clocks(void)
 {
 	/*
 	 * setup the aux clock divider for PERI_CLK
 	 * (source: PERIPH_PLL_PHI_0/5, PERI_CLK - 80 MHz)
 	 */
 	aux_source_clk_config(MC_CGM0_BASE_ADDR, 5, MC_CGM_ACn_SEL_PERPLLDIVX);
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 5, 0, 4);

 	/* setup the aux clock divider for LIN_CLK (40MHz) */
 	aux_source_clk_config(MC_CGM0_BASE_ADDR, 3, MC_CGM_ACn_SEL_PERPLLDIVX);
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 3, 0, 1);

 	/* setup the aux clock divider for ENET_TIME_CLK (50MHz) */
 	aux_source_clk_config(MC_CGM0_BASE_ADDR, 7, MC_CGM_ACn_SEL_ENETPLL);
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 7, 1, 9);

 	/* setup the aux clock divider for ENET_CLK (50MHz) */
 	aux_source_clk_config(MC_CGM2_BASE_ADDR, 2, MC_CGM_ACn_SEL_ENETPLL);
 	aux_div_clk_config(MC_CGM2_BASE_ADDR, 2, 0, 9);

 	/* setup the aux clock divider for SDHC_CLK (50 MHz). */
 	aux_source_clk_config(MC_CGM0_BASE_ADDR, 15, MC_CGM_ACn_SEL_ENETPLL);
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 15, 0, 9);

 	/* setup the aux clock divider for DDR_CLK (533MHz) and APEX_SYS_CLK (266MHz) */
 	aux_source_clk_config(MC_CGM0_BASE_ADDR, 8, MC_CGM_ACn_SEL_DDRPLL);
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 8, 0, 0);
 	/* setup the aux clock divider for DDR4_CLK (133,25MHz) */
 	aux_div_clk_config(MC_CGM0_BASE_ADDR, 8, 1, 3);

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 }

 static void enable_modules_clock(void)
 {
 	/* PIT0 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL58);
 	/* PIT1 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL170);
 	/* LINFLEX0 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL83);
 	/* LINFLEX1 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL188);
 	/* ENET */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL50);
 	/* SDHC */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL93);
 	/* IIC0 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL81);
 	/* IIC1 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL184);
 	/* IIC2 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL186);
 	/* MMDC0 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL54);
 	/* MMDC1 */
 	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL162);

 	entry_to_target_mode(MC_ME_MCTL_RUN0);
 }

 void clock_init(void)
 {
 	unsigned int arm_dfs[ARM_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
 		{ARM_PLL_PHI1_DFS1_EN, ARM_PLL_PHI1_DFS1_MFN,
 		 ARM_PLL_PHI1_DFS1_MFI},
 		{ARM_PLL_PHI1_DFS2_EN, ARM_PLL_PHI1_DFS2_MFN,
 		 ARM_PLL_PHI1_DFS2_MFI},
 		{ARM_PLL_PHI1_DFS3_EN, ARM_PLL_PHI1_DFS3_MFN,
 		 ARM_PLL_PHI1_DFS3_MFI}
 	};

 	unsigned int enet_dfs[ENET_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
 		{ENET_PLL_PHI1_DFS1_EN, ENET_PLL_PHI1_DFS1_MFN,
 		 ENET_PLL_PHI1_DFS1_MFI},
 		{ENET_PLL_PHI1_DFS2_EN, ENET_PLL_PHI1_DFS2_MFN,
 		 ENET_PLL_PHI1_DFS2_MFI},
 		{ENET_PLL_PHI1_DFS3_EN, ENET_PLL_PHI1_DFS3_MFN,
 		 ENET_PLL_PHI1_DFS3_MFI},
 		{ENET_PLL_PHI1_DFS4_EN, ENET_PLL_PHI1_DFS4_MFN,
 		 ENET_PLL_PHI1_DFS4_MFI}
 	};

 	unsigned int ddr_dfs[DDR_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
 		{DDR_PLL_PHI1_DFS1_EN, DDR_PLL_PHI1_DFS1_MFN,
 		 DDR_PLL_PHI1_DFS1_MFI},
 		{DDR_PLL_PHI1_DFS2_EN, DDR_PLL_PHI1_DFS2_MFN,
 		 DDR_PLL_PHI1_DFS2_MFI},
 		{DDR_PLL_PHI1_DFS3_EN, DDR_PLL_PHI1_DFS3_MFN,
 		 DDR_PLL_PHI1_DFS3_MFI}
 	};

 	writel(MC_ME_RUN_PCn_DRUN | MC_ME_RUN_PCn_RUN0 | MC_ME_RUN_PCn_RUN1 |
 	       MC_ME_RUN_PCn_RUN2 | MC_ME_RUN_PCn_RUN3, MC_ME_RUN_PCn(0));

 	/* turn on FXOSC */
 	writel(MC_ME_RUNMODE_MC_MVRON | MC_ME_RUNMODE_MC_XOSCON |
 	       MC_ME_RUNMODE_MC_FIRCON | MC_ME_RUNMODE_MC_SYSCLK(0x1),
 	       MC_ME_RUNn_MC(0));

 	entry_to_target_mode(MC_ME_MCTL_RUN0);

 	program_pll(ARM_PLL, XOSC_CLK_FREQ, ARM_PLL_PHI0_FREQ,
 		    ARM_PLL_PHI1_FREQ, ARM_PLL_PHI1_DFS_Nr, arm_dfs,
 		    ARM_PLL_PLLDV_PREDIV, ARM_PLL_PLLDV_MFD, ARM_PLL_PLLDV_MFN);

 	setup_sys_clocks();

 	program_pll(PERIPH_PLL, XOSC_CLK_FREQ, PERIPH_PLL_PHI0_FREQ,
 		    PERIPH_PLL_PHI1_FREQ, PERIPH_PLL_PHI1_DFS_Nr, NULL,
 		    PERIPH_PLL_PLLDV_PREDIV, PERIPH_PLL_PLLDV_MFD,
 		    PERIPH_PLL_PLLDV_MFN);

 	program_pll(ENET_PLL, XOSC_CLK_FREQ, ENET_PLL_PHI0_FREQ,
 		    ENET_PLL_PHI1_FREQ, ENET_PLL_PHI1_DFS_Nr, enet_dfs,
 		    ENET_PLL_PLLDV_PREDIV, ENET_PLL_PLLDV_MFD,
 		    ENET_PLL_PLLDV_MFN);

 	program_pll(DDR_PLL, XOSC_CLK_FREQ, DDR_PLL_PHI0_FREQ,
 		    DDR_PLL_PHI1_FREQ, DDR_PLL_PHI1_DFS_Nr, ddr_dfs,
 		    DDR_PLL_PLLDV_PREDIV, DDR_PLL_PLLDV_MFD, DDR_PLL_PLLDV_MFN);

 	program_pll(VIDEO_PLL, XOSC_CLK_FREQ, VIDEO_PLL_PHI0_FREQ,
 		    VIDEO_PLL_PHI1_FREQ, VIDEO_PLL_PHI1_DFS_Nr, NULL,
 		    VIDEO_PLL_PLLDV_PREDIV, VIDEO_PLL_PLLDV_MFD,
 		    VIDEO_PLL_PLLDV_MFN);

 	setup_aux_clocks();

 	enable_modules_clock();

 }
	/*
	* (C) Copyright 2015, Freescale Semiconductor, Inc.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <asm/io.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/mc_cgm_regs.h>
	#include <asm/arch/mc_me_regs.h>
	#include <asm/arch/clock.h>

	/*
	* Select the clock reference for required pll.
	* pll - ARM_PLL, PERIPH_PLL, ENET_PLL, DDR_PLL, VIDEO_PLL.
	* refclk_freq - input referece clock frequency (FXOSC - 40 MHZ, FIRC - 48 MHZ)
	*/
	static int select_pll_source_clk(enum pll_type pll, u32 refclk_freq)
	{
	u32 clk_src;
	u32 pll_idx;
	volatile struct src src = (struct src )SRC_SOC_BASE_ADDR;

	/* select the pll clock source */
	switch (refclk_freq) {
	case FIRC_CLK_FREQ:
	clk_src = SRC_GPR1_FIRC_CLK_SOURCE;
	break;
	case XOSC_CLK_FREQ:
	clk_src = SRC_GPR1_XOSC_CLK_SOURCE;
	break;
	default:
	/* The clock frequency for the source clock is unknown */
	return -1;
	}
	/*
	* The hardware definition is not uniform, it has to calculate again
	* the recurrence formula.
	*/
	switch (pll) {
	case PERIPH_PLL:
	pll_idx = 3;
	break;
	case ENET_PLL:
	pll_idx = 1;
	break;
	case DDR_PLL:
	pll_idx = 2;
	break;
	default:
	pll_idx = pll;
	}

	writel(readl(&src->gpr1) \| SRC_GPR1_PLL_SOURCE(pll_idx, clk_src),
	&src->gpr1);

	return 0;
	}

	static void entry_to_target_mode(u32 mode)
	{
	writel(mode \| MC_ME_MCTL_KEY, MC_ME_MCTL);
	writel(mode \| MC_ME_MCTL_INVERTEDKEY, MC_ME_MCTL);
	while ((readl(MC_ME_GS) & MC_ME_GS_S_MTRANS) != 0x00000000) ;
	}

	/*
	* Program the pll according to the input parameters.
	* pll - ARM_PLL, PERIPH_PLL, ENET_PLL, DDR_PLL, VIDEO_PLL.
	* refclk_freq - input reference clock frequency (FXOSC - 40 MHZ, FIRC - 48 MHZ)
	* freq - expected output frequency for PHY0
	* freq1 - expected output frequency for PHY1
	* dfs_nr - number of DFS modules for current PLL
	* dfs - array with the activation dfs field, mfn and mfi
	* plldv_prediv - divider of clkfreq_ref
	* plldv_mfd - loop multiplication factor divider
	* pllfd_mfn - numerator loop multiplication factor divider
	* Please consult the PLLDIG chapter of platform manual
	* before to use this function.
	*)
	*/
	static int program_pll(enum pll_type pll, u32 refclk_freq, u32 freq0, u32 freq1,
	u32 dfs_nr, u32 dfs[][DFS_PARAMS_Nr], u32 plldv_prediv,
	u32 plldv_mfd, u32 pllfd_mfn)
	{
	u32 i, rfdphi1, rfdphi, dfs_on = 0, fvco;

	/*
	* This formula is from platform reference manual (Rev. 1, 6/2015), PLLDIG chapter.
	*/
	fvco =
	(refclk_freq / plldv_prediv) * (plldv_mfd +
	pllfd_mfn / (float)20480);

	/*
	* VCO should have value in [ PLL_MIN_FREQ, PLL_MAX_FREQ ]. Please consult
	* the platform DataSheet in order to determine the allowed values.
	*/

	if (fvco < PLL_MIN_FREQ \|\| fvco > PLL_MAX_FREQ) {
	return -1;
	}

	if (select_pll_source_clk(pll, refclk_freq) < 0) {
	return -1;
	}

	rfdphi = fvco / freq0;

	rfdphi1 = (freq1 == 0) ? 0 : fvco / freq1;

	writel(PLLDIG_PLLDV_RFDPHI1_SET(rfdphi1) \|
	PLLDIG_PLLDV_RFDPHI_SET(rfdphi) \|
	PLLDIG_PLLDV_PREDIV_SET(plldv_prediv) \|
	PLLDIG_PLLDV_MFD(plldv_mfd), PLLDIG_PLLDV(pll));

	writel(readl(PLLDIG_PLLFD(pll)) \| PLLDIG_PLLFD_MFN_SET(pllfd_mfn) \|
	PLLDIG_PLLFD_SMDEN, PLLDIG_PLLFD(pll));

	/* switch on the pll in current mode */
	writel(readl(MC_ME_RUNn_MC(0)) \| MC_ME_RUNMODE_MC_PLL(pll),
	MC_ME_RUNn_MC(0));

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	/* Only ARM_PLL, ENET_PLL and DDR_PLL */
	if ((pll == ARM_PLL) \|\| (pll == ENET_PLL) \|\| (pll == DDR_PLL)) {
	/* DFS clk enable programming */
	writel(DFS_CTRL_DLL_RESET, DFS_CTRL(pll));

	writel(DFS_DLLPRG1_CPICTRL_SET(0x5) \|
	DFS_DLLPRG1_VSETTLCTRL_SET(0x1) \|
	DFS_DLLPRG1_CALBYPEN_SET(0x0) \|
	DFS_DLLPRG1_DACIN_SET(0x1) \| DFS_DLLPRG1_LCKWT_SET(0x0) \|
	DFS_DLLPRG1_V2IGC_SET(0x5), DFS_DLLPRG1(pll));

	for (i = 0; i < dfs_nr; i++) {
	if (dfs[i][0]) {
	writel(DFS_DVPORTn_MFI_SET(dfs[i][2]) \|
	DFS_DVPORTn_MFN_SET(dfs[i][1]),
	DFS_DVPORTn(pll, i));
	dfs_on \|= (dfs[i][0] << i);
	}
	}

	writel(readl(DFS_CTRL(pll)) & ~DFS_CTRL_DLL_RESET,
	DFS_CTRL(pll));
	writel(readl(DFS_PORTRESET(pll)) &
	~DFS_PORTRESET_PORTRESET_SET(dfs_on),
	DFS_PORTRESET(pll));
	while ((readl(DFS_PORTSR(pll)) & dfs_on) != dfs_on) ;
	}

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	return 0;

	}

	static void aux_source_clk_config(uintptr_t cgm_addr, u8 ac, u32 source)
	{
	/* select the clock source */
	writel(MC_CGM_ACn_SEL_SET(source), CGM_ACn_SC(cgm_addr, ac));
	}

	static void aux_div_clk_config(uintptr_t cgm_addr, u8 ac, u8 dc, u32 divider)
	{
	/* set the divider */
	writel(MC_CGM_ACn_DCm_DE \| MC_CGM_ACn_DCm_PREDIV(divider),
	CGM_ACn_DCm(cgm_addr, ac, dc));
	}

	static void setup_sys_clocks(void)
	{

	/* set ARM PLL DFS 1 as SYSCLK */
	writel((readl(MC_ME_RUNn_MC(0)) & ~MC_ME_RUNMODE_MC_SYSCLK_MASK) \|
	MC_ME_RUNMODE_MC_SYSCLK(0x2), MC_ME_RUNn_MC(0));

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	/* select sysclks ARMPLL, ARMPLLDFS2, ARMPLLDFS3 */
	writel(MC_ME_RUNMODE_SEC_CC_I_SYSCLK
	(0x2,
	MC_ME_RUNMODE_SEC_CC_I_SYSCLK1_OFFSET) \|
	MC_ME_RUNMODE_SEC_CC_I_SYSCLK(0x2,
	MC_ME_RUNMODE_SEC_CC_I_SYSCLK2_OFFSET)
	\| MC_ME_RUNMODE_SEC_CC_I_SYSCLK(0x2,
	MC_ME_RUNMODE_SEC_CC_I_SYSCLK3_OFFSET),
	MC_ME_RUNn_SEC_CC_I(0));

	/* setup the sys clock divider for CORE_CLK (1000MHz) */
	writel(MC_CGM_SC_DCn_DE \| MC_CGM_SC_DCn_PREDIV(0x0),
	CGM_SC_DCn(MC_CGM1_BASE_ADDR, 0));

	/* setup the sys clock divider for CORE2_CLK (500MHz) */
	writel(MC_CGM_SC_DCn_DE \| MC_CGM_SC_DCn_PREDIV(0x1),
	CGM_SC_DCn(MC_CGM1_BASE_ADDR, 1));
	/* setup the sys clock divider for SYS3_CLK (266 MHz) */
	writel(MC_CGM_SC_DCn_DE \| MC_CGM_SC_DCn_PREDIV(0x0),
	CGM_SC_DCn(MC_CGM0_BASE_ADDR, 0));

	/* setup the sys clock divider for SYS6_CLK (133 Mhz) */
	writel(MC_CGM_SC_DCn_DE \| MC_CGM_SC_DCn_PREDIV(0x1),
	CGM_SC_DCn(MC_CGM0_BASE_ADDR, 1));

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	}

	static void setup_aux_clocks(void)
	{
	/*
	* setup the aux clock divider for PERI_CLK
	* (source: PERIPH_PLL_PHI_0/5, PERI_CLK - 80 MHz)
	*/
	aux_source_clk_config(MC_CGM0_BASE_ADDR, 5, MC_CGM_ACn_SEL_PERPLLDIVX);
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 5, 0, 4);

	/* setup the aux clock divider for LIN_CLK (40MHz) */
	aux_source_clk_config(MC_CGM0_BASE_ADDR, 3, MC_CGM_ACn_SEL_PERPLLDIVX);
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 3, 0, 1);

	/* setup the aux clock divider for ENET_TIME_CLK (50MHz) */
	aux_source_clk_config(MC_CGM0_BASE_ADDR, 7, MC_CGM_ACn_SEL_ENETPLL);
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 7, 1, 9);

	/* setup the aux clock divider for ENET_CLK (50MHz) */
	aux_source_clk_config(MC_CGM2_BASE_ADDR, 2, MC_CGM_ACn_SEL_ENETPLL);
	aux_div_clk_config(MC_CGM2_BASE_ADDR, 2, 0, 9);

	/* setup the aux clock divider for SDHC_CLK (50 MHz). */
	aux_source_clk_config(MC_CGM0_BASE_ADDR, 15, MC_CGM_ACn_SEL_ENETPLL);
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 15, 0, 9);

	/* setup the aux clock divider for DDR_CLK (533MHz) and APEX_SYS_CLK (266MHz) */
	aux_source_clk_config(MC_CGM0_BASE_ADDR, 8, MC_CGM_ACn_SEL_DDRPLL);
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 8, 0, 0);
	/* setup the aux clock divider for DDR4_CLK (133,25MHz) */
	aux_div_clk_config(MC_CGM0_BASE_ADDR, 8, 1, 3);

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	}

	static void enable_modules_clock(void)
	{
	/* PIT0 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL58);
	/* PIT1 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL170);
	/* LINFLEX0 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL83);
	/* LINFLEX1 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL188);
	/* ENET */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL50);
	/* SDHC */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL93);
	/* IIC0 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL81);
	/* IIC1 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL184);
	/* IIC2 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL186);
	/* MMDC0 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL54);
	/* MMDC1 */
	writeb(MC_ME_PCTLn_RUNPCm(0), MC_ME_PCTL162);

	entry_to_target_mode(MC_ME_MCTL_RUN0);
	}

	void clock_init(void)
	{
	unsigned int arm_dfs[ARM_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
	{ARM_PLL_PHI1_DFS1_EN, ARM_PLL_PHI1_DFS1_MFN,
	ARM_PLL_PHI1_DFS1_MFI},
	{ARM_PLL_PHI1_DFS2_EN, ARM_PLL_PHI1_DFS2_MFN,
	ARM_PLL_PHI1_DFS2_MFI},
	{ARM_PLL_PHI1_DFS3_EN, ARM_PLL_PHI1_DFS3_MFN,
	ARM_PLL_PHI1_DFS3_MFI}
	};

	unsigned int enet_dfs[ENET_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
	{ENET_PLL_PHI1_DFS1_EN, ENET_PLL_PHI1_DFS1_MFN,
	ENET_PLL_PHI1_DFS1_MFI},
	{ENET_PLL_PHI1_DFS2_EN, ENET_PLL_PHI1_DFS2_MFN,
	ENET_PLL_PHI1_DFS2_MFI},
	{ENET_PLL_PHI1_DFS3_EN, ENET_PLL_PHI1_DFS3_MFN,
	ENET_PLL_PHI1_DFS3_MFI},
	{ENET_PLL_PHI1_DFS4_EN, ENET_PLL_PHI1_DFS4_MFN,
	ENET_PLL_PHI1_DFS4_MFI}
	};

	unsigned int ddr_dfs[DDR_PLL_PHI1_DFS_Nr][DFS_PARAMS_Nr] = {
	{DDR_PLL_PHI1_DFS1_EN, DDR_PLL_PHI1_DFS1_MFN,
	DDR_PLL_PHI1_DFS1_MFI},
	{DDR_PLL_PHI1_DFS2_EN, DDR_PLL_PHI1_DFS2_MFN,
	DDR_PLL_PHI1_DFS2_MFI},
	{DDR_PLL_PHI1_DFS3_EN, DDR_PLL_PHI1_DFS3_MFN,
	DDR_PLL_PHI1_DFS3_MFI}
	};

	writel(MC_ME_RUN_PCn_DRUN \| MC_ME_RUN_PCn_RUN0 \| MC_ME_RUN_PCn_RUN1 \|
	MC_ME_RUN_PCn_RUN2 \| MC_ME_RUN_PCn_RUN3, MC_ME_RUN_PCn(0));

	/* turn on FXOSC */
	writel(MC_ME_RUNMODE_MC_MVRON \| MC_ME_RUNMODE_MC_XOSCON \|
	MC_ME_RUNMODE_MC_FIRCON \| MC_ME_RUNMODE_MC_SYSCLK(0x1),
	MC_ME_RUNn_MC(0));

	entry_to_target_mode(MC_ME_MCTL_RUN0);

	program_pll(ARM_PLL, XOSC_CLK_FREQ, ARM_PLL_PHI0_FREQ,
	ARM_PLL_PHI1_FREQ, ARM_PLL_PHI1_DFS_Nr, arm_dfs,
	ARM_PLL_PLLDV_PREDIV, ARM_PLL_PLLDV_MFD, ARM_PLL_PLLDV_MFN);

	setup_sys_clocks();

	program_pll(PERIPH_PLL, XOSC_CLK_FREQ, PERIPH_PLL_PHI0_FREQ,
	PERIPH_PLL_PHI1_FREQ, PERIPH_PLL_PHI1_DFS_Nr, NULL,
	PERIPH_PLL_PLLDV_PREDIV, PERIPH_PLL_PLLDV_MFD,
	PERIPH_PLL_PLLDV_MFN);

	program_pll(ENET_PLL, XOSC_CLK_FREQ, ENET_PLL_PHI0_FREQ,
	ENET_PLL_PHI1_FREQ, ENET_PLL_PHI1_DFS_Nr, enet_dfs,
	ENET_PLL_PLLDV_PREDIV, ENET_PLL_PLLDV_MFD,
	ENET_PLL_PLLDV_MFN);

	program_pll(DDR_PLL, XOSC_CLK_FREQ, DDR_PLL_PHI0_FREQ,
	DDR_PLL_PHI1_FREQ, DDR_PLL_PHI1_DFS_Nr, ddr_dfs,
	DDR_PLL_PLLDV_PREDIV, DDR_PLL_PLLDV_MFD, DDR_PLL_PLLDV_MFN);

	program_pll(VIDEO_PLL, XOSC_CLK_FREQ, VIDEO_PLL_PHI0_FREQ,
	VIDEO_PLL_PHI1_FREQ, VIDEO_PLL_PHI1_DFS_Nr, NULL,
	VIDEO_PLL_PLLDV_PREDIV, VIDEO_PLL_PLLDV_MFD,
	VIDEO_PLL_PLLDV_MFN);

	setup_aux_clocks();

	enable_modules_clock();

	}