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-rw-r--r--cpu/arm_cortexa8/mx51/clock.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/cpu/arm_cortexa8/mx51/clock.c b/cpu/arm_cortexa8/mx51/clock.c
deleted file mode 100644
index 38480ac5a1..0000000000
--- a/cpu/arm_cortexa8/mx51/clock.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * (C) Copyright 2007
- * Sascha Hauer, Pengutronix
- *
- * (C) Copyright 2009 Freescale Semiconductor, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/errno.h>
-#include <asm/arch/imx-regs.h>
-#include <asm/arch/crm_regs.h>
-#include <asm/arch/clock.h>
-
-enum pll_clocks {
- PLL1_CLOCK = 0,
- PLL2_CLOCK,
- PLL3_CLOCK,
- PLL_CLOCKS,
-};
-
-struct mxc_pll_reg *mxc_plls[PLL_CLOCKS] = {
- [PLL1_CLOCK] = (struct mxc_pll_reg *)PLL1_BASE_ADDR,
- [PLL2_CLOCK] = (struct mxc_pll_reg *)PLL2_BASE_ADDR,
- [PLL3_CLOCK] = (struct mxc_pll_reg *)PLL3_BASE_ADDR,
-};
-
-struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE;
-
-/*
- * Calculate the frequency of this pll.
- */
-static u32 decode_pll(struct mxc_pll_reg *pll, u32 infreq)
-{
- u32 mfi, mfn, mfd, pd;
-
- mfn = __raw_readl(&pll->mfn);
- mfd = __raw_readl(&pll->mfd) + 1;
- mfi = __raw_readl(&pll->op);
- pd = (mfi & 0xF) + 1;
- mfi = (mfi >> 4) & 0xF;
- mfi = (mfi >= 5) ? mfi : 5;
-
- return ((4 * (infreq / 1000) * (mfi * mfd + mfn)) / (mfd * pd)) * 1000;
-}
-
-/*
- * Get mcu main rate
- */
-u32 get_mcu_main_clk(void)
-{
- u32 reg, freq;
-
- reg = (__raw_readl(&mxc_ccm->cacrr) & MXC_CCM_CACRR_ARM_PODF_MASK) >>
- MXC_CCM_CACRR_ARM_PODF_OFFSET;
- freq = decode_pll(mxc_plls[PLL1_CLOCK], CONFIG_MX51_HCLK_FREQ);
- return freq / (reg + 1);
-}
-
-/*
- * Get the rate of peripheral's root clock.
- */
-static u32 get_periph_clk(void)
-{
- u32 reg;
-
- reg = __raw_readl(&mxc_ccm->cbcdr);
- if (!(reg & MXC_CCM_CBCDR_PERIPH_CLK_SEL))
- return decode_pll(mxc_plls[PLL2_CLOCK], CONFIG_MX51_HCLK_FREQ);
- reg = __raw_readl(&mxc_ccm->cbcmr);
- switch ((reg & MXC_CCM_CBCMR_PERIPH_CLK_SEL_MASK) >>
- MXC_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET) {
- case 0:
- return decode_pll(mxc_plls[PLL1_CLOCK], CONFIG_MX51_HCLK_FREQ);
- case 1:
- return decode_pll(mxc_plls[PLL3_CLOCK], CONFIG_MX51_HCLK_FREQ);
- default:
- return 0;
- }
- /* NOTREACHED */
-}
-
-/*
- * Get the rate of ipg clock.
- */
-static u32 get_ipg_clk(void)
-{
- u32 ahb_podf, ipg_podf;
-
- ahb_podf = __raw_readl(&mxc_ccm->cbcdr);
- ipg_podf = (ahb_podf & MXC_CCM_CBCDR_IPG_PODF_MASK) >>
- MXC_CCM_CBCDR_IPG_PODF_OFFSET;
- ahb_podf = (ahb_podf & MXC_CCM_CBCDR_AHB_PODF_MASK) >>
- MXC_CCM_CBCDR_AHB_PODF_OFFSET;
- return get_periph_clk() / ((ahb_podf + 1) * (ipg_podf + 1));
-}
-
-/*
- * Get the rate of ipg_per clock.
- */
-static u32 get_ipg_per_clk(void)
-{
- u32 pred1, pred2, podf;
-
- if (__raw_readl(&mxc_ccm->cbcmr) & MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL)
- return get_ipg_clk();
- /* Fixme: not handle what about lpm*/
- podf = __raw_readl(&mxc_ccm->cbcdr);
- pred1 = (podf & MXC_CCM_CBCDR_PERCLK_PRED1_MASK) >>
- MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET;
- pred2 = (podf & MXC_CCM_CBCDR_PERCLK_PRED2_MASK) >>
- MXC_CCM_CBCDR_PERCLK_PRED2_OFFSET;
- podf = (podf & MXC_CCM_CBCDR_PERCLK_PODF_MASK) >>
- MXC_CCM_CBCDR_PERCLK_PODF_OFFSET;
-
- return get_periph_clk() / ((pred1 + 1) * (pred2 + 1) * (podf + 1));
-}
-
-/*
- * Get the rate of uart clk.
- */
-static u32 get_uart_clk(void)
-{
- unsigned int freq, reg, pred, podf;
-
- reg = __raw_readl(&mxc_ccm->cscmr1);
- switch ((reg & MXC_CCM_CSCMR1_UART_CLK_SEL_MASK) >>
- MXC_CCM_CSCMR1_UART_CLK_SEL_OFFSET) {
- case 0x0:
- freq = decode_pll(mxc_plls[PLL1_CLOCK],
- CONFIG_MX51_HCLK_FREQ);
- break;
- case 0x1:
- freq = decode_pll(mxc_plls[PLL2_CLOCK],
- CONFIG_MX51_HCLK_FREQ);
- break;
- case 0x2:
- freq = decode_pll(mxc_plls[PLL3_CLOCK],
- CONFIG_MX51_HCLK_FREQ);
- break;
- default:
- return 66500000;
- }
-
- reg = __raw_readl(&mxc_ccm->cscdr1);
-
- pred = (reg & MXC_CCM_CSCDR1_UART_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PRED_OFFSET;
-
- podf = (reg & MXC_CCM_CSCDR1_UART_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET;
- freq /= (pred + 1) * (podf + 1);
-
- return freq;
-}
-
-/*
- * This function returns the low power audio clock.
- */
-u32 get_lp_apm(void)
-{
- u32 ret_val = 0;
- u32 ccsr = __raw_readl(&mxc_ccm->ccsr);
-
- if (((ccsr >> 9) & 1) == 0)
- ret_val = CONFIG_MX51_HCLK_FREQ;
- else
- ret_val = ((32768 * 1024));
-
- return ret_val;
-}
-
-/*
- * get cspi clock rate.
- */
-u32 imx_get_cspiclk(void)
-{
- u32 ret_val = 0, pdf, pre_pdf, clk_sel;
- u32 cscmr1 = __raw_readl(&mxc_ccm->cscmr1);
- u32 cscdr2 = __raw_readl(&mxc_ccm->cscdr2);
-
- pre_pdf = (cscdr2 & MXC_CCM_CSCDR2_CSPI_CLK_PRED_MASK) \
- >> MXC_CCM_CSCDR2_CSPI_CLK_PRED_OFFSET;
- pdf = (cscdr2 & MXC_CCM_CSCDR2_CSPI_CLK_PODF_MASK) \
- >> MXC_CCM_CSCDR2_CSPI_CLK_PODF_OFFSET;
- clk_sel = (cscmr1 & MXC_CCM_CSCMR1_CSPI_CLK_SEL_MASK) \
- >> MXC_CCM_CSCMR1_CSPI_CLK_SEL_OFFSET;
-
- switch (clk_sel) {
- case 0:
- ret_val = decode_pll(mxc_plls[PLL1_CLOCK],
- CONFIG_MX51_HCLK_FREQ) /
- ((pre_pdf + 1) * (pdf + 1));
- break;
- case 1:
- ret_val = decode_pll(mxc_plls[PLL2_CLOCK],
- CONFIG_MX51_HCLK_FREQ) /
- ((pre_pdf + 1) * (pdf + 1));
- break;
- case 2:
- ret_val = decode_pll(mxc_plls[PLL3_CLOCK],
- CONFIG_MX51_HCLK_FREQ) /
- ((pre_pdf + 1) * (pdf + 1));
- break;
- default:
- ret_val = get_lp_apm() / ((pre_pdf + 1) * (pdf + 1));
- break;
- }
-
- return ret_val;
-}
-
-/*
- * The API of get mxc clockes.
- */
-unsigned int mxc_get_clock(enum mxc_clock clk)
-{
- switch (clk) {
- case MXC_ARM_CLK:
- return get_mcu_main_clk();
- case MXC_AHB_CLK:
- break;
- case MXC_IPG_CLK:
- return get_ipg_clk();
- case MXC_IPG_PERCLK:
- return get_ipg_per_clk();
- case MXC_UART_CLK:
- return get_uart_clk();
- case MXC_CSPI_CLK:
- return imx_get_cspiclk();
- case MXC_FEC_CLK:
- return decode_pll(mxc_plls[PLL1_CLOCK],
- CONFIG_MX51_HCLK_FREQ);
- default:
- break;
- }
- return -1;
-}
-
-u32 imx_get_uartclk(void)
-{
- return get_uart_clk();
-}
-
-
-u32 imx_get_fecclk(void)
-{
- return mxc_get_clock(MXC_IPG_CLK);
-}
-
-/*
- * Dump some core clockes.
- */
-int do_mx51_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- u32 freq;
-
- freq = decode_pll(mxc_plls[PLL1_CLOCK], CONFIG_MX51_HCLK_FREQ);
- printf("mx51 pll1: %dMHz\n", freq / 1000000);
- freq = decode_pll(mxc_plls[PLL2_CLOCK], CONFIG_MX51_HCLK_FREQ);
- printf("mx51 pll2: %dMHz\n", freq / 1000000);
- freq = decode_pll(mxc_plls[PLL3_CLOCK], CONFIG_MX51_HCLK_FREQ);
- printf("mx51 pll3: %dMHz\n", freq / 1000000);
- printf("ipg clock : %dHz\n", mxc_get_clock(MXC_IPG_CLK));
- printf("ipg per clock : %dHz\n", mxc_get_clock(MXC_IPG_PERCLK));
-
- return 0;
-}
-
-/***************************************************/
-
-U_BOOT_CMD(
- clockinfo, CONFIG_SYS_MAXARGS, 1, do_mx51_showclocks,
- "display mx51 clocks\n",
- ""
-);
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