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#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/clkdev.h>
#include <linux/err.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include "clk.h"
#define IO_ADDR_CCM(off) (MX27_IO_ADDRESS(MX27_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)
#define CCM_CSCR_UPDATE_DIS (1 << 31)
#define CCM_CSCR_SSI2 (1 << 23)
#define CCM_CSCR_SSI1 (1 << 22)
#define CCM_CSCR_VPU (1 << 21)
#define CCM_CSCR_MSHC (1 << 20)
#define CCM_CSCR_SPLLRES (1 << 19)
#define CCM_CSCR_MPLLRES (1 << 18)
#define CCM_CSCR_SP (1 << 17)
#define CCM_CSCR_MCU (1 << 16)
#define CCM_CSCR_OSC26MDIV (1 << 4)
#define CCM_CSCR_OSC26M (1 << 3)
#define CCM_CSCR_FPM (1 << 2)
#define CCM_CSCR_SPEN (1 << 1)
#define CCM_CSCR_MPEN (1 << 0)
/* i.MX27 TO 2+ */
#define CCM_CSCR_ARM_SRC (1 << 15)
#define CCM_SPCTL1_LF (1 << 15)
#define CCM_SPCTL1_BRMO (1 << 6)
static const char *vpu_sel_clks[] = { "spll", "mpll_main2", };
static const char *cpu_sel_clks[] = { "mpll_main2", "mpll", };
static const char *clko_sel_clks[] = {
"ckil", "prem", "ckih", "ckih",
"ckih", "mpll", "spll", "cpu_div",
"ahb", "ipg", "per1_div", "per2_div",
"per3_div", "per4_div", "ssi1_div", "ssi2_div",
"nfc_div", "mshc_div", "vpu_div", "60m",
"32k", "usb_div", "dptc",
};
static const char *ssi_sel_clks[] = { "spll", "mpll", };
enum mx27_clks {
dummy, ckih, ckil, mpll, spll, mpll_main2, ahb, ipg, nfc_div, per1_div,
per2_div, per3_div, per4_div, vpu_sel, vpu_div, usb_div, cpu_sel,
clko_sel, cpu_div, clko_div, ssi1_sel, ssi2_sel, ssi1_div, ssi2_div,
clko_en, ssi2_ipg_gate, ssi1_ipg_gate, slcdc_ipg_gate, sdhc3_ipg_gate,
sdhc2_ipg_gate, sdhc1_ipg_gate, scc_ipg_gate, sahara_ipg_gate,
rtc_ipg_gate, pwm_ipg_gate, owire_ipg_gate, lcdc_ipg_gate,
kpp_ipg_gate, iim_ipg_gate, i2c2_ipg_gate, i2c1_ipg_gate,
gpt6_ipg_gate, gpt5_ipg_gate, gpt4_ipg_gate, gpt3_ipg_gate,
gpt2_ipg_gate, gpt1_ipg_gate, gpio_ipg_gate, fec_ipg_gate,
emma_ipg_gate, dma_ipg_gate, cspi3_ipg_gate, cspi2_ipg_gate,
cspi1_ipg_gate, nfc_baud_gate, ssi2_baud_gate, ssi1_baud_gate,
vpu_baud_gate, per4_gate, per3_gate, per2_gate, per1_gate,
usb_ahb_gate, slcdc_ahb_gate, sahara_ahb_gate, lcdc_ahb_gate,
vpu_ahb_gate, fec_ahb_gate, emma_ahb_gate, emi_ahb_gate, dma_ahb_gate,
csi_ahb_gate, brom_ahb_gate, ata_ahb_gate, wdog_ipg_gate, usb_ipg_gate,
uart6_ipg_gate, uart5_ipg_gate, uart4_ipg_gate, uart3_ipg_gate,
uart2_ipg_gate, uart1_ipg_gate, clk_max
};
static struct clk *clk[clk_max];
int __init mx27_clocks_init(unsigned long fref)
{
int i;
clk[dummy] = imx_clk_fixed("dummy", 0);
clk[ckih] = imx_clk_fixed("ckih", fref);
clk[ckil] = imx_clk_fixed("ckil", 32768);
clk[mpll] = imx_clk_pllv1("mpll", "ckih", CCM_MPCTL0);
clk[spll] = imx_clk_pllv1("spll", "ckih", CCM_SPCTL0);
clk[mpll_main2] = imx_clk_fixed_factor("mpll_main2", "mpll", 2, 3);
if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 8, 2);
clk[ipg] = imx_clk_fixed_factor("ipg", "ahb", 1, 2);
} else {
clk[ahb] = imx_clk_divider("ahb", "mpll_main2", CCM_CSCR, 9, 4);
clk[ipg] = imx_clk_divider("ipg", "ahb", CCM_CSCR, 8, 1);
}
clk[nfc_div] = imx_clk_divider("nfc_div", "ahb", CCM_PCDR0, 6, 4);
clk[per1_div] = imx_clk_divider("per1_div", "mpll_main2", CCM_PCDR1, 0, 6);
clk[per2_div] = imx_clk_divider("per2_div", "mpll_main2", CCM_PCDR1, 8, 6);
clk[per3_div] = imx_clk_divider("per3_div", "mpll_main2", CCM_PCDR1, 16, 6);
clk[per4_div] = imx_clk_divider("per4_div", "mpll_main2", CCM_PCDR1, 24, 6);
clk[vpu_sel] = imx_clk_mux("vpu_sel", CCM_CSCR, 21, 1, vpu_sel_clks, ARRAY_SIZE(vpu_sel_clks));
clk[vpu_div] = imx_clk_divider("vpu_div", "vpu_sel", CCM_PCDR0, 10, 3);
clk[usb_div] = imx_clk_divider("usb_div", "spll", CCM_CSCR, 28, 3);
clk[cpu_sel] = imx_clk_mux("cpu_sel", CCM_CSCR, 15, 1, cpu_sel_clks, ARRAY_SIZE(cpu_sel_clks));
clk[clko_sel] = imx_clk_mux("clko_sel", CCM_CCSR, 0, 5, clko_sel_clks, ARRAY_SIZE(clko_sel_clks));
if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 12, 2);
else
clk[cpu_div] = imx_clk_divider("cpu_div", "cpu_sel", CCM_CSCR, 13, 3);
clk[clko_div] = imx_clk_divider("clko_div", "clko_sel", CCM_PCDR0, 22, 3);
clk[ssi1_sel] = imx_clk_mux("ssi1_sel", CCM_CSCR, 22, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks));
clk[ssi2_sel] = imx_clk_mux("ssi2_sel", CCM_CSCR, 23, 1, ssi_sel_clks, ARRAY_SIZE(ssi_sel_clks));
clk[ssi1_div] = imx_clk_divider("ssi1_div", "ssi1_sel", CCM_PCDR0, 16, 6);
clk[ssi2_div] = imx_clk_divider("ssi2_div", "ssi2_sel", CCM_PCDR0, 26, 3);
clk[clko_en] = imx_clk_gate("clko_en", "clko_div", CCM_PCCR0, 0);
clk[ssi2_ipg_gate] = imx_clk_gate("ssi2_ipg_gate", "ipg", CCM_PCCR0, 0);
clk[ssi1_ipg_gate] = imx_clk_gate("ssi1_ipg_gate", "ipg", CCM_PCCR0, 1);
clk[slcdc_ipg_gate] = imx_clk_gate("slcdc_ipg_gate", "ipg", CCM_PCCR0, 2);
clk[sdhc3_ipg_gate] = imx_clk_gate("sdhc3_ipg_gate", "ipg", CCM_PCCR0, 3);
clk[sdhc2_ipg_gate] = imx_clk_gate("sdhc2_ipg_gate", "ipg", CCM_PCCR0, 4);
clk[sdhc1_ipg_gate] = imx_clk_gate("sdhc1_ipg_gate", "ipg", CCM_PCCR0, 5);
clk[scc_ipg_gate] = imx_clk_gate("scc_ipg_gate", "ipg", CCM_PCCR0, 6);
clk[sahara_ipg_gate] = imx_clk_gate("sahara_ipg_gate", "ipg", CCM_PCCR0, 7);
clk[rtc_ipg_gate] = imx_clk_gate("rtc_ipg_gate", "ipg", CCM_PCCR0, 9);
clk[pwm_ipg_gate] = imx_clk_gate("pwm_ipg_gate", "ipg", CCM_PCCR0, 11);
clk[owire_ipg_gate] = imx_clk_gate("owire_ipg_gate", "ipg", CCM_PCCR0, 12);
clk[lcdc_ipg_gate] = imx_clk_gate("lcdc_ipg_gate", "ipg", CCM_PCCR0, 14);
clk[kpp_ipg_gate] = imx_clk_gate("kpp_ipg_gate", "ipg", CCM_PCCR0, 15);
clk[iim_ipg_gate] = imx_clk_gate("iim_ipg_gate", "ipg", CCM_PCCR0, 16);
clk[i2c2_ipg_gate] = imx_clk_gate("i2c2_ipg_gate", "ipg", CCM_PCCR0, 17);
clk[i2c1_ipg_gate] = imx_clk_gate("i2c1_ipg_gate", "ipg", CCM_PCCR0, 18);
clk[gpt6_ipg_gate] = imx_clk_gate("gpt6_ipg_gate", "ipg", CCM_PCCR0, 19);
clk[gpt5_ipg_gate] = imx_clk_gate("gpt5_ipg_gate", "ipg", CCM_PCCR0, 20);
clk[gpt4_ipg_gate] = imx_clk_gate("gpt4_ipg_gate", "ipg", CCM_PCCR0, 21);
clk[gpt3_ipg_gate] = imx_clk_gate("gpt3_ipg_gate", "ipg", CCM_PCCR0, 22);
clk[gpt2_ipg_gate] = imx_clk_gate("gpt2_ipg_gate", "ipg", CCM_PCCR0, 23);
clk[gpt1_ipg_gate] = imx_clk_gate("gpt1_ipg_gate", "ipg", CCM_PCCR0, 24);
clk[gpio_ipg_gate] = imx_clk_gate("gpio_ipg_gate", "ipg", CCM_PCCR0, 25);
clk[fec_ipg_gate] = imx_clk_gate("fec_ipg_gate", "ipg", CCM_PCCR0, 26);
clk[emma_ipg_gate] = imx_clk_gate("emma_ipg_gate", "ipg", CCM_PCCR0, 27);
clk[dma_ipg_gate] = imx_clk_gate("dma_ipg_gate", "ipg", CCM_PCCR0, 28);
clk[cspi3_ipg_gate] = imx_clk_gate("cspi3_ipg_gate", "ipg", CCM_PCCR0, 29);
clk[cspi2_ipg_gate] = imx_clk_gate("cspi2_ipg_gate", "ipg", CCM_PCCR0, 30);
clk[cspi1_ipg_gate] = imx_clk_gate("cspi1_ipg_gate", "ipg", CCM_PCCR0, 31);
clk[nfc_baud_gate] = imx_clk_gate("nfc_baud_gate", "nfc_div", CCM_PCCR1, 3);
clk[ssi2_baud_gate] = imx_clk_gate("ssi2_baud_gate", "ssi2_div", CCM_PCCR1, 4);
clk[ssi1_baud_gate] = imx_clk_gate("ssi1_baud_gate", "ssi1_div", CCM_PCCR1, 5);
clk[vpu_baud_gate] = imx_clk_gate("vpu_baud_gate", "vpu_div", CCM_PCCR1, 6);
clk[per4_gate] = imx_clk_gate("per4_gate", "per4_div", CCM_PCCR1, 7);
clk[per3_gate] = imx_clk_gate("per3_gate", "per3_div", CCM_PCCR1, 8);
clk[per2_gate] = imx_clk_gate("per2_gate", "per2_div", CCM_PCCR1, 9);
clk[per1_gate] = imx_clk_gate("per1_gate", "per1_div", CCM_PCCR1, 10);
clk[usb_ahb_gate] = imx_clk_gate("usb_ahb_gate", "ahb", CCM_PCCR1, 11);
clk[slcdc_ahb_gate] = imx_clk_gate("slcdc_ahb_gate", "ahb", CCM_PCCR1, 12);
clk[sahara_ahb_gate] = imx_clk_gate("sahara_ahb_gate", "ahb", CCM_PCCR1, 13);
clk[lcdc_ahb_gate] = imx_clk_gate("lcdc_ahb_gate", "ahb", CCM_PCCR1, 15);
clk[vpu_ahb_gate] = imx_clk_gate("vpu_ahb_gate", "ahb", CCM_PCCR1, 16);
clk[fec_ahb_gate] = imx_clk_gate("fec_ahb_gate", "ahb", CCM_PCCR1, 17);
clk[emma_ahb_gate] = imx_clk_gate("emma_ahb_gate", "ahb", CCM_PCCR1, 18);
clk[emi_ahb_gate] = imx_clk_gate("emi_ahb_gate", "ahb", CCM_PCCR1, 19);
clk[dma_ahb_gate] = imx_clk_gate("dma_ahb_gate", "ahb", CCM_PCCR1, 20);
clk[csi_ahb_gate] = imx_clk_gate("csi_ahb_gate", "ahb", CCM_PCCR1, 21);
clk[brom_ahb_gate] = imx_clk_gate("brom_ahb_gate", "ahb", CCM_PCCR1, 22);
clk[ata_ahb_gate] = imx_clk_gate("ata_ahb_gate", "ahb", CCM_PCCR1, 23);
clk[wdog_ipg_gate] = imx_clk_gate("wdog_ipg_gate", "ipg", CCM_PCCR1, 24);
clk[usb_ipg_gate] = imx_clk_gate("usb_ipg_gate", "ipg", CCM_PCCR1, 25);
clk[uart6_ipg_gate] = imx_clk_gate("uart6_ipg_gate", "ipg", CCM_PCCR1, 26);
clk[uart5_ipg_gate] = imx_clk_gate("uart5_ipg_gate", "ipg", CCM_PCCR1, 27);
clk[uart4_ipg_gate] = imx_clk_gate("uart4_ipg_gate", "ipg", CCM_PCCR1, 28);
clk[uart3_ipg_gate] = imx_clk_gate("uart3_ipg_gate", "ipg", CCM_PCCR1, 29);
clk[uart2_ipg_gate] = imx_clk_gate("uart2_ipg_gate", "ipg", CCM_PCCR1, 30);
clk[uart1_ipg_gate] = imx_clk_gate("uart1_ipg_gate", "ipg", CCM_PCCR1, 31);
for (i = 0; i < ARRAY_SIZE(clk); i++)
if (IS_ERR(clk[i]))
pr_err("i.MX27 clk %d: register failed with %ld\n",
i, PTR_ERR(clk[i]));
clk_register_clkdev(clk[uart1_ipg_gate], "ipg", "imx21-uart.0");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.0");
clk_register_clkdev(clk[uart2_ipg_gate], "ipg", "imx21-uart.1");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.1");
clk_register_clkdev(clk[uart3_ipg_gate], "ipg", "imx21-uart.2");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.2");
clk_register_clkdev(clk[uart4_ipg_gate], "ipg", "imx21-uart.3");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.3");
clk_register_clkdev(clk[uart5_ipg_gate], "ipg", "imx21-uart.4");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.4");
clk_register_clkdev(clk[uart6_ipg_gate], "ipg", "imx21-uart.5");
clk_register_clkdev(clk[per1_gate], "per", "imx21-uart.5");
clk_register_clkdev(clk[gpt1_ipg_gate], "ipg", "imx-gpt.0");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.0");
clk_register_clkdev(clk[gpt2_ipg_gate], "ipg", "imx-gpt.1");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.1");
clk_register_clkdev(clk[gpt3_ipg_gate], "ipg", "imx-gpt.2");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.2");
clk_register_clkdev(clk[gpt4_ipg_gate], "ipg", "imx-gpt.3");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.3");
clk_register_clkdev(clk[gpt5_ipg_gate], "ipg", "imx-gpt.4");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.4");
clk_register_clkdev(clk[gpt6_ipg_gate], "ipg", "imx-gpt.5");
clk_register_clkdev(clk[per1_gate], "per", "imx-gpt.5");
clk_register_clkdev(clk[pwm_ipg_gate], NULL, "mxc_pwm.0");
clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.0");
clk_register_clkdev(clk[sdhc1_ipg_gate], "ipg", "mxc-mmc.0");
clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.1");
clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.1");
clk_register_clkdev(clk[per2_gate], "per", "mxc-mmc.2");
clk_register_clkdev(clk[sdhc2_ipg_gate], "ipg", "mxc-mmc.2");
clk_register_clkdev(clk[cspi1_ipg_gate], NULL, "imx27-cspi.0");
clk_register_clkdev(clk[cspi2_ipg_gate], NULL, "imx27-cspi.1");
clk_register_clkdev(clk[cspi3_ipg_gate], NULL, "imx27-cspi.2");
clk_register_clkdev(clk[per3_gate], "per", "imx-fb.0");
clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx-fb.0");
clk_register_clkdev(clk[lcdc_ahb_gate], "ahb", "imx-fb.0");
clk_register_clkdev(clk[csi_ahb_gate], NULL, "mx2-camera.0");
clk_register_clkdev(clk[usb_div], "per", "fsl-usb2-udc");
clk_register_clkdev(clk[usb_ipg_gate], "ipg", "fsl-usb2-udc");
clk_register_clkdev(clk[usb_ahb_gate], "ahb", "fsl-usb2-udc");
clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.0");
clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.0");
clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.0");
clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.1");
clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.1");
clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.1");
clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.2");
clk_register_clkdev(clk[usb_ipg_gate], "ipg", "mxc-ehci.2");
clk_register_clkdev(clk[usb_ahb_gate], "ahb", "mxc-ehci.2");
clk_register_clkdev(clk[ssi1_ipg_gate], NULL, "imx-ssi.0");
clk_register_clkdev(clk[ssi2_ipg_gate], NULL, "imx-ssi.1");
clk_register_clkdev(clk[nfc_baud_gate], NULL, "mxc_nand.0");
clk_register_clkdev(clk[vpu_baud_gate], "per", "imx-vpu");
clk_register_clkdev(clk[vpu_ahb_gate], "ahb", "imx-vpu");
clk_register_clkdev(clk[dma_ahb_gate], "ahb", "imx-dma");
clk_register_clkdev(clk[dma_ipg_gate], "ipg", "imx-dma");
clk_register_clkdev(clk[fec_ipg_gate], "ipg", "imx27-fec.0");
clk_register_clkdev(clk[fec_ahb_gate], "ahb", "imx27-fec.0");
clk_register_clkdev(clk[wdog_ipg_gate], NULL, "imx2-wdt.0");
clk_register_clkdev(clk[i2c1_ipg_gate], NULL, "imx-i2c.0");
clk_register_clkdev(clk[i2c2_ipg_gate], NULL, "imx-i2c.1");
clk_register_clkdev(clk[owire_ipg_gate], NULL, "mxc_w1.0");
clk_register_clkdev(clk[kpp_ipg_gate], NULL, "imx-keypad");
clk_register_clkdev(clk[emma_ahb_gate], "ahb", "imx-emma");
clk_register_clkdev(clk[emma_ipg_gate], "ipg", "imx-emma");
clk_register_clkdev(clk[iim_ipg_gate], "iim", NULL);
clk_register_clkdev(clk[gpio_ipg_gate], "gpio", NULL);
clk_register_clkdev(clk[brom_ahb_gate], "brom", NULL);
clk_register_clkdev(clk[ata_ahb_gate], "ata", NULL);
clk_register_clkdev(clk[rtc_ipg_gate], NULL, "mxc_rtc");
clk_register_clkdev(clk[scc_ipg_gate], "scc", NULL);
clk_register_clkdev(clk[cpu_div], "cpu", NULL);
clk_register_clkdev(clk[emi_ahb_gate], "emi_ahb" , NULL);
clk_register_clkdev(clk[ssi1_baud_gate], "bitrate" , "imx-ssi.0");
clk_register_clkdev(clk[ssi2_baud_gate], "bitrate" , "imx-ssi.1");
mxc_timer_init(MX27_IO_ADDRESS(MX27_GPT1_BASE_ADDR), MX27_INT_GPT1);
clk_prepare_enable(clk[emi_ahb_gate]);
return 0;
}
#ifdef CONFIG_OF
int __init mx27_clocks_init_dt(void)
{
struct device_node *np;
u32 fref = 26000000; /* default */
for_each_compatible_node(np, NULL, "fixed-clock") {
if (!of_device_is_compatible(np, "fsl,imx-osc26m"))
continue;
if (!of_property_read_u32(np, "clock-frequency", &fref))
break;
}
return mx27_clocks_init(fref);
}
#endif
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