/* * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Juergen Beisert, kernel@pengutronix.de * Copyright 2008 Martin Fuzzey, mfuzzey@gmail.com * * 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., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. */ #include #include #include #include #include #include #include "clk.h" #include "common.h" #include "hardware.h" #define IO_ADDR_CCM(off) (MX21_IO_ADDRESS(MX21_CCM_BASE_ADDR + (off))) /* Register offsets */ #define CCM_CSCR IO_ADDR_CCM(0x0) #define CCM_MPCTL0 IO_ADDR_CCM(0x4) #define CCM_MPCTL1 IO_ADDR_CCM(0x8) #define CCM_SPCTL0 IO_ADDR_CCM(0xc) #define CCM_SPCTL1 IO_ADDR_CCM(0x10) #define CCM_OSC26MCTL IO_ADDR_CCM(0x14) #define CCM_PCDR0 IO_ADDR_CCM(0x18) #define CCM_PCDR1 IO_ADDR_CCM(0x1c) #define CCM_PCCR0 IO_ADDR_CCM(0x20) #define CCM_PCCR1 IO_ADDR_CCM(0x24) #define CCM_CCSR IO_ADDR_CCM(0x28) #define CCM_PMCTL IO_ADDR_CCM(0x2c) #define CCM_PMCOUNT IO_ADDR_CCM(0x30) #define CCM_WKGDCTL IO_ADDR_CCM(0x34) static const char *mpll_sel_clks[] = { "fpm", "ckih", }; static const char *spll_sel_clks[] = { "fpm", "ckih", }; enum imx21_clks { ckil, ckih, fpm, mpll_sel, spll_sel, mpll, spll, fclk, hclk, ipg, per1, per2, per3, per4, uart1_ipg_gate, uart2_ipg_gate, uart3_ipg_gate, uart4_ipg_gate, gpt1_ipg_gate, gpt2_ipg_gate, gpt3_ipg_gate, pwm_ipg_gate, sdhc1_ipg_gate, sdhc2_ipg_gate, lcdc_ipg_gate, lcdc_hclk_gate, cspi3_ipg_gate, cspi2_ipg_gate, cspi1_ipg_gate, per4_gate, csi_hclk_gate, usb_div, usb_gate, usb_hclk_gate, ssi1_gate, ssi2_gate, nfc_div, nfc_gate, dma_gate, dma_hclk_gate, brom_gate, emma_gate, emma_hclk_gate, slcdc_gate, slcdc_hclk_gate, wdog_gate, gpio_gate, i2c_gate, kpp_gate, owire_gate, rtc_gate, clk_max }; static struct clk *clk[clk_max]; /* * must be called very early to get information about the * available clock rate when the timer framework starts */ int __init mx21_clocks_init(unsigned long lref, unsigned long href) { clk[ckil] = imx_clk_fixed("ckil", lref); clk[ckih] = imx_clk_fixed("ckih", href); clk[fpm] = imx_clk_fixed_factor("fpm", "ckil", 512, 1); clk[mpll_sel] = imx_clk_mux("mpll_sel", CCM_CSCR, 16, 1, mpll_sel_clks, ARRAY_SIZE(mpll_sel_clks)); clk[spll_sel] = imx_clk_mux("spll_sel", CCM_CSCR, 17, 1, spll_sel_clks, ARRAY_SIZE(spll_sel_clks)); clk[mpll] = imx_clk_pllv1("mpll", "mpll_sel", CCM_MPCTL0); clk[spll] = imx_clk_pllv1("spll", "spll_sel", CCM_SPCTL0); clk[fclk] = imx_clk_divider("fclk", "mpll", CCM_CSCR, 29, 3); clk[hclk] = imx_clk_divider("hclk", "fclk", CCM_CSCR, 10, 4); clk[ipg] = imx_clk_divider("ipg", "hclk", CCM_CSCR, 9, 1); clk[per1] = imx_clk_divider("per1", "mpll", CCM_PCDR1, 0, 6); clk[per2] = imx_clk_divider("per2", "mpll", CCM_PCDR1, 8, 6); clk[per3] = imx_clk_divider("per3", "mpll", CCM_PCDR1, 16, 6); clk[per4] = imx_clk_divider("per4", "mpll", CCM_PCDR1, 24, 6); clk[uart1_ipg_gate] = imx_clk_gate("uart1_ipg_gate", "ipg", CCM_PCCR0, 0); clk[uart2_ipg_gate] = imx_clk_gate("uart2_ipg_gate", "ipg", CCM_PCCR0, 1); clk[uart3_ipg_gate] = imx_clk_gate("uart3_ipg_gate", "ipg", CCM_PCCR0, 2); clk[uart4_ipg_gate] = imx_clk_gate("uart4_ipg_gate", "ipg", CCM_PCCR0, 3); clk[gpt1_ipg_gate] = imx_clk_gate("gpt1_ipg_gate", "ipg", CCM_PCCR1, 25); clk[gpt2_ipg_gate] = imx_clk_gate("gpt2_ipg_gate", "ipg", CCM_PCCR1, 26); clk[gpt3_ipg_gate] = imx_clk_gate("gpt3_ipg_gate", "ipg", CCM_PCCR1, 27); clk[pwm_ipg_gate] = imx_clk_gate("pwm_ipg_gate", "ipg", CCM_PCCR1, 28); clk[sdhc1_ipg_gate] = imx_clk_gate("sdhc1_ipg_gate", "ipg", CCM_PCCR0, 9); clk[sdhc2_ipg_gate] = imx_clk_gate("sdhc2_ipg_gate", "ipg", CCM_PCCR0, 10); clk[lcdc_ipg_gate] = imx_clk_gate("lcdc_ipg_gate", "ipg", CCM_PCCR0, 18); clk[lcdc_hclk_gate] = imx_clk_gate("lcdc_hclk_gate", "hclk", CCM_PCCR0, 26); clk[cspi3_ipg_gate] = imx_clk_gate("cspi3_ipg_gate", "ipg", CCM_PCCR1, 23); clk[cspi2_ipg_gate] = imx_clk_gate("cspi2_ipg_gate", "ipg", CCM_PCCR0, 5); clk[cspi1_ipg_gate] = imx_clk_gate("cspi1_ipg_gate", "ipg", CCM_PCCR0, 4); clk[per4_gate] = imx_clk_gate("per4_gate", "per4", CCM_PCCR0, 22); clk[csi_hclk_gate] = imx_clk_gate("csi_hclk_gate", "hclk", CCM_PCCR0, 31); clk[usb_div] = imx_clk_divider("usb_div", "spll", CCM_CSCR, 26, 3); clk[usb_gate] = imx_clk_gate("usb_gate", "usb_div", CCM_PCCR0, 14); clk[usb_hclk_gate] = imx_clk_gate("usb_hclk_gate", "hclk", CCM_PCCR0, 24); clk[ssi1_gate] = imx_clk_gate("ssi1_gate", "ipg", CCM_PCCR0, 6); clk[ssi2_gate] = imx_clk_gate("ssi2_gate", "ipg", CCM_PCCR0, 7); clk[nfc_div] = imx_clk_divider("nfc_div", "ipg", CCM_PCDR0, 12, 4); clk[nfc_gate] = imx_clk_gate("nfc_gate", "nfc_div", CCM_PCCR0, 19); clk[dma_gate] = imx_clk_gate("dma_gate", "ipg", CCM_PCCR0, 13); clk[dma_hclk_gate] = imx_clk_gate("dma_hclk_gate", "hclk", CCM_PCCR0, 30); clk[brom_gate] = imx_clk_gate("brom_gate", "hclk", CCM_PCCR0, 28); clk[emma_gate] = imx_clk_gate("emma_gate", "ipg", CCM_PCCR0, 15); clk[emma_hclk_gate] = imx_clk_gate("emma_hclk_gate", "hclk", CCM_PCCR0, 27); clk[slcdc_gate] = imx_clk_gate("slcdc_gate", "ipg", CCM_PCCR0, 25); clk[slcdc_hclk_gate] = imx_clk_gate("slcdc_hclk_gate", "hclk", CCM_PCCR0, 21); clk[wdog_gate] = imx_clk_gate("wdog_gate", "ipg", CCM_PCCR1, 24); clk[gpio_gate] = imx_clk_gate("gpio_gate", "ipg", CCM_PCCR0, 11); clk[i2c_gate] = imx_clk_gate("i2c_gate", "ipg", CCM_PCCR0, 12); clk[kpp_gate] = imx_clk_gate("kpp_gate", "ipg", CCM_PCCR1, 30); clk[owire_gate] = imx_clk_gate("owire_gate", "ipg", CCM_PCCR1, 31); clk[rtc_gate] = imx_clk_gate("rtc_gate", "ipg", CCM_PCCR1, 29); imx_check_clocks(clk, ARRAY_SIZE(clk)); clk_register_clkdev(clk[per1], "per1", NULL); clk_register_clkdev(clk[per2], "per2", NULL); clk_register_clkdev(clk[per3], "per3", NULL); clk_register_clkdev(clk[per4], "per4", NULL); clk_register_clkdev(clk[per1], "per", "imx21-uart.0"); clk_register_clkdev(clk[uart1_ipg_gate], "ipg", "imx21-uart.0"); clk_register_clkdev(clk[per1], "per", "imx21-uart.1"); clk_register_clkdev(clk[uart2_ipg_gate], "ipg", "imx21-uart.1"); clk_register_clkdev(clk[per1], "per", "imx21-uart.2"); clk_register_clkdev(clk[uart3_ipg_gate], "ipg", "imx21-uart.2"); clk_register_clkdev(clk[per1], "per", "imx21-uart.3"); clk_register_clkdev(clk[uart4_ipg_gate], "ipg", "imx21-uart.3"); clk_register_clkdev(clk[gpt1_ipg_gate], "ipg", "imx-gpt.0"); clk_register_clkdev(clk[per1], "per", "imx-gpt.0"); clk_register_clkdev(clk[gpt2_ipg_gate], "ipg", "imx-gpt.1"); clk_register_clkdev(clk[per1], "per", "imx-gpt.1"); clk_register_clkdev(clk[gpt3_ipg_gate], "ipg", "imx-gpt.2"); clk_register_clkdev(clk[per1], "per", "imx-gpt.2"); clk_register_clkdev(clk[per2], "per", "imx21-cspi.0"); clk_register_clkdev(clk[cspi1_ipg_gate], "ipg", "imx21-cspi.0"); clk_register_clkdev(clk[per2], "per", "imx21-cspi.1"); clk_register_clkdev(clk[cspi2_ipg_gate], "ipg", "imx21-cspi.1"); clk_register_clkdev(clk[per2], "per", "imx21-cspi.2"); clk_register_clkdev(clk[cspi3_ipg_gate], "ipg", "imx21-cspi.2"); clk_register_clkdev(clk[per3], "per", "imx21-fb.0"); clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx21-fb.0"); clk_register_clkdev(clk[lcdc_hclk_gate], "ahb", "imx21-fb.0"); clk_register_clkdev(clk[usb_gate], "per", "imx21-hcd.0"); clk_register_clkdev(clk[usb_hclk_gate], "ahb", "imx21-hcd.0"); clk_register_clkdev(clk[nfc_gate], NULL, "imx21-nand.0"); clk_register_clkdev(clk[dma_hclk_gate], "ahb", "imx21-dma"); clk_register_clkdev(clk[dma_gate], "ipg", "imx21-dma"); clk_register_clkdev(clk[wdog_gate], NULL, "imx2-wdt.0"); clk_register_clkdev(clk[i2c_gate], NULL, "imx21-i2c.0"); clk_register_clkdev(clk[kpp_gate], NULL, "mxc-keypad"); clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1.0"); clk_register_clkdev(clk[brom_gate], "brom", NULL); clk_register_clkdev(clk[emma_gate], "emma", NULL); clk_register_clkdev(clk[slcdc_gate], "slcdc", NULL); clk_register_clkdev(clk[gpio_gate], "gpio", NULL); clk_register_clkdev(clk[rtc_gate], "rtc", NULL); clk_register_clkdev(clk[csi_hclk_gate], "csi", NULL); clk_register_clkdev(clk[ssi1_gate], "ssi1", NULL); clk_register_clkdev(clk[ssi2_gate], "ssi2", NULL); clk_register_clkdev(clk[sdhc1_ipg_gate], "sdhc1", NULL); clk_register_clkdev(clk[sdhc2_ipg_gate], "sdhc2", NULL); mxc_timer_init(MX21_IO_ADDRESS(MX21_GPT1_BASE_ADDR), MX21_INT_GPT1); return 0; }