342 lines
15 KiB
C
342 lines
15 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <common.h>
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#include <init.h>
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#include <driver.h>
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#include <linux/clk.h>
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#include <io.h>
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#include <linux/clkdev.h>
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#include <linux/err.h>
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#include <mach/imx6-regs.h>
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#include "clk.h"
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#define CCGR0 0x68
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#define CCGR1 0x6c
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#define CCGR2 0x70
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#define CCGR3 0x74
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#define CCGR4 0x78
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#define CCGR5 0x7c
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#define CCGR6 0x80
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#define CCGR7 0x84
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#define CLPCR 0x54
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#define BP_CLPCR_LPM 0
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#define BM_CLPCR_LPM (0x3 << 0)
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#define BM_CLPCR_BYPASS_PMIC_READY (0x1 << 2)
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#define BM_CLPCR_ARM_CLK_DIS_ON_LPM (0x1 << 5)
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#define BM_CLPCR_SBYOS (0x1 << 6)
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#define BM_CLPCR_DIS_REF_OSC (0x1 << 7)
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#define BM_CLPCR_VSTBY (0x1 << 8)
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#define BP_CLPCR_STBY_COUNT 9
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#define BM_CLPCR_STBY_COUNT (0x3 << 9)
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#define BM_CLPCR_COSC_PWRDOWN (0x1 << 11)
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#define BM_CLPCR_WB_PER_AT_LPM (0x1 << 16)
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#define BM_CLPCR_WB_CORE_AT_LPM (0x1 << 17)
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#define BM_CLPCR_BYP_MMDC_CH0_LPM_HS (0x1 << 19)
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#define BM_CLPCR_BYP_MMDC_CH1_LPM_HS (0x1 << 21)
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#define BM_CLPCR_MASK_CORE0_WFI (0x1 << 22)
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#define BM_CLPCR_MASK_CORE1_WFI (0x1 << 23)
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#define BM_CLPCR_MASK_CORE2_WFI (0x1 << 24)
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#define BM_CLPCR_MASK_CORE3_WFI (0x1 << 25)
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#define BM_CLPCR_MASK_SCU_IDLE (0x1 << 26)
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#define BM_CLPCR_MASK_L2CC_IDLE (0x1 << 27)
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enum mx6q_clks {
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dummy, ckil, ckih, osc, pll2_pfd0_352m, pll2_pfd1_594m, pll2_pfd2_396m,
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pll3_pfd0_720m, pll3_pfd1_540m, pll3_pfd2_508m, pll3_pfd3_454m,
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pll2_198m, pll3_120m, pll3_80m, pll3_60m, twd, step, pll1_sw,
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periph_pre, periph2_pre, periph_clk2_sel, periph2_clk2_sel, axi_sel,
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esai_sel, asrc_sel, spdif_sel, gpu2d_axi, gpu3d_axi, gpu2d_core_sel,
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gpu3d_core_sel, gpu3d_shader_sel, ipu1_sel, ipu2_sel, ldb_di0_sel,
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ldb_di1_sel, ipu1_di0_pre_sel, ipu1_di1_pre_sel, ipu2_di0_pre_sel,
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ipu2_di1_pre_sel, ipu1_di0_sel, ipu1_di1_sel, ipu2_di0_sel,
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ipu2_di1_sel, hsi_tx_sel, pcie_axi_sel, ssi1_sel, ssi2_sel, ssi3_sel,
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usdhc1_sel, usdhc2_sel, usdhc3_sel, usdhc4_sel, enfc_sel, emi_sel,
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emi_slow_sel, vdo_axi_sel, vpu_axi_sel, cko1_sel, periph, periph2,
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periph_clk2, periph2_clk2, ipg, ipg_per, esai_pred, esai_podf,
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asrc_pred, asrc_podf, spdif_pred, spdif_podf, can_root, ecspi_root,
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gpu2d_core_podf, gpu3d_core_podf, gpu3d_shader, ipu1_podf, ipu2_podf,
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ldb_di0_podf, ldb_di1_podf, ipu1_di0_pre, ipu1_di1_pre, ipu2_di0_pre,
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ipu2_di1_pre, hsi_tx_podf, ssi1_pred, ssi1_podf, ssi2_pred, ssi2_podf,
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ssi3_pred, ssi3_podf, uart_serial_podf, usdhc1_podf, usdhc2_podf,
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usdhc3_podf, usdhc4_podf, enfc_pred, enfc_podf, emi_podf,
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emi_slow_podf, vpu_axi_podf, cko1_podf, axi, mmdc_ch0_axi_podf,
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mmdc_ch1_axi_podf, arm, ahb, apbh_dma, asrc, can1_ipg, can1_serial,
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can2_ipg, can2_serial, ecspi1, ecspi2, ecspi3, ecspi4, ecspi5, enet,
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esai, gpt_ipg, gpt_ipg_per, gpu2d_core, gpu3d_core, hdmi_iahb,
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hdmi_isfr, i2c1, i2c2, i2c3, iim, enfc, ipu1, ipu1_di0, ipu1_di1, ipu2,
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ipu2_di0, ldb_di0, ldb_di1, ipu2_di1, hsi_tx, mlb, mmdc_ch0_axi,
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mmdc_ch1_axi, ocram, openvg_axi, pcie_axi, pwm1, pwm2, pwm3, pwm4, per1_bch,
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gpmi_bch_apb, gpmi_bch, gpmi_io, gpmi_apb, sata, sdma, spba, ssi1,
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ssi2, ssi3, uart_ipg, uart_serial, usboh3, usdhc1, usdhc2, usdhc3,
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usdhc4, vdo_axi, vpu_axi, cko1, pll1_sys, pll2_bus, pll3_usb_otg,
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pll4_audio, pll5_video, pll8_mlb, pll7_usb_host, pll6_enet, ssi1_ipg,
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ssi2_ipg, ssi3_ipg, rom, usbphy1, usbphy2, ldb_di0_div_3_5, ldb_di1_div_3_5,
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sata_ref, pcie_ref, sata_ref_100m, pcie_ref_125m, enet_ref,
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clk_max
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};
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static struct clk *clks[clk_max];
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static const char *step_sels[] = {
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"osc",
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"pll2_pfd2_396m",
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};
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static const char *pll1_sw_sels[] = {
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"pll1_sys",
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"step",
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};
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static const char *periph_pre_sels[] = {
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"pll2_bus",
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"pll2_pfd2_396m",
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"pll2_pfd0_352m",
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"pll2_198m",
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};
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static const char *periph_clk2_sels[] = {
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"pll3_usb_otg",
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"osc",
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};
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static const char *periph_sels[] = {
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"periph_pre",
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"periph_clk2",
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};
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static const char *periph2_sels[] = {
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"periph2_pre",
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"periph2_clk2",
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};
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static const char *axi_sels[] = {
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"periph",
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"pll2_pfd2_396m",
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"pll3_pfd1_540m",
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};
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static const char *usdhc_sels[] = {
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"pll2_pfd2_396m",
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"pll2_pfd0_352m",
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};
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static const char *enfc_sels[] = {
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"pll2_pfd0_352m",
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"pll2_bus",
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"pll3_usb_otg",
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"pll2_pfd2_396m",
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};
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static const char *emi_sels[] = {
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"axi",
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"pll3_usb_otg",
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"pll2_pfd2_396m",
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"pll2_pfd0_352m",
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};
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static const char *vdo_axi_sels[] = {
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"axi",
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"ahb",
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};
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static const char *cko1_sels[] = {
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"pll3_usb_otg",
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"pll2_bus",
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"pll1_sys",
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"pll5_video",
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"dummy",
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"axi",
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"enfc",
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"ipu1_di0",
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"ipu1_di1",
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"ipu2_di0",
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"ipu2_di1",
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"ahb",
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"ipg",
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"ipg_per",
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"ckil",
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"pll4_audio",
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};
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static struct clk_div_table clk_enet_ref_table[] = {
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{ .val = 0, .div = 20, },
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{ .val = 1, .div = 10, },
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{ .val = 2, .div = 5, },
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{ .val = 3, .div = 4, },
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{ },
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};
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static int imx6_ccm_probe(struct device_d *dev)
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{
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void __iomem *base, *anatop_base, *ccm_base;
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unsigned long ckil_rate = 32768;
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unsigned long ckih_rate = 0;
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unsigned long osc_rate = 24000000;
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anatop_base = (void *)MX6_ANATOP_BASE_ADDR;
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ccm_base = dev_request_mem_region(dev, 0);
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base = anatop_base;
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clks[dummy] = clk_fixed("dummy", 0);
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clks[ckil] = clk_fixed("ckil", ckil_rate);
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clks[ckih] = clk_fixed("ckih", ckih_rate);
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clks[osc] = clk_fixed("osc", osc_rate);
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/* type name parent_name base div_mask */
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clks[pll1_sys] = imx_clk_pllv3(IMX_PLLV3_SYS, "pll1_sys", "osc", base, 0x7f);
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clks[pll2_bus] = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_bus", "osc", base + 0x30, 0x1);
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clks[pll3_usb_otg] = imx_clk_pllv3(IMX_PLLV3_USB, "pll3_usb_otg", "osc", base + 0x10, 0x3);
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clks[pll4_audio] = imx_clk_pllv3(IMX_PLLV3_AV, "pll4_audio", "osc", base + 0x70, 0x7f);
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clks[pll5_video] = imx_clk_pllv3(IMX_PLLV3_AV, "pll5_video", "osc", base + 0xa0, 0x7f);
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clks[pll8_mlb] = imx_clk_pllv3(IMX_PLLV3_MLB, "pll8_mlb", "osc", base + 0xd0, 0x0);
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clks[pll7_usb_host] = imx_clk_pllv3(IMX_PLLV3_USB, "pll7_usb_host","osc", base + 0x20, 0x3);
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clks[pll6_enet] = imx_clk_pllv3(IMX_PLLV3_ENET, "pll6_enet", "osc", base + 0xe0, 0x3);
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clks[usbphy1] = imx_clk_gate("usbphy1", "pll3_usb_otg", base + 0x10, 6);
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clks[usbphy2] = imx_clk_gate("usbphy2", "pll7_usb_host", base + 0x20, 6);
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clks[sata_ref] = imx_clk_fixed_factor("sata_ref", "pll6_enet", 1, 5);
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clks[pcie_ref] = imx_clk_fixed_factor("pcie_ref", "pll6_enet", 1, 4);
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clks[sata_ref_100m] = imx_clk_gate("sata_ref_100m", "sata_ref", base + 0xe0, 20);
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clks[pcie_ref_125m] = imx_clk_gate("pcie_ref_125m", "pcie_ref", base + 0xe0, 19);
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clks[enet_ref] = clk_divider_table("enet_ref", "pll6_enet", base + 0xe0, 0, 2, clk_enet_ref_table);
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/* name parent_name reg idx */
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clks[pll2_pfd0_352m] = imx_clk_pfd("pll2_pfd0_352m", "pll2_bus", base + 0x100, 0);
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clks[pll2_pfd1_594m] = imx_clk_pfd("pll2_pfd1_594m", "pll2_bus", base + 0x100, 1);
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clks[pll2_pfd2_396m] = imx_clk_pfd("pll2_pfd2_396m", "pll2_bus", base + 0x100, 2);
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clks[pll3_pfd0_720m] = imx_clk_pfd("pll3_pfd0_720m", "pll3_usb_otg", base + 0xf0, 0);
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clks[pll3_pfd1_540m] = imx_clk_pfd("pll3_pfd1_540m", "pll3_usb_otg", base + 0xf0, 1);
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clks[pll3_pfd2_508m] = imx_clk_pfd("pll3_pfd2_508m", "pll3_usb_otg", base + 0xf0, 2);
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clks[pll3_pfd3_454m] = imx_clk_pfd("pll3_pfd3_454m", "pll3_usb_otg", base + 0xf0, 3);
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/* name parent_name mult div */
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clks[pll2_198m] = imx_clk_fixed_factor("pll2_198m", "pll2_pfd2_396m", 1, 2);
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clks[pll3_120m] = imx_clk_fixed_factor("pll3_120m", "pll3_usb_otg", 1, 4);
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clks[pll3_80m] = imx_clk_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6);
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clks[pll3_60m] = imx_clk_fixed_factor("pll3_60m", "pll3_usb_otg", 1, 8);
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clks[twd] = imx_clk_fixed_factor("twd", "arm", 1, 2);
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base = ccm_base;
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/* name reg shift width parent_names num_parents */
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clks[step] = imx_clk_mux("step", base + 0xc, 8, 1, step_sels, ARRAY_SIZE(step_sels));
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clks[pll1_sw] = imx_clk_mux("pll1_sw", base + 0xc, 2, 1, pll1_sw_sels, ARRAY_SIZE(pll1_sw_sels));
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clks[periph_pre] = imx_clk_mux("periph_pre", base + 0x18, 18, 2, periph_pre_sels, ARRAY_SIZE(periph_pre_sels));
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clks[periph2_pre] = imx_clk_mux("periph2_pre", base + 0x18, 21, 2, periph_pre_sels, ARRAY_SIZE(periph_pre_sels));
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clks[periph_clk2_sel] = imx_clk_mux("periph_clk2_sel", base + 0x18, 12, 1, periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels));
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clks[periph2_clk2_sel] = imx_clk_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels));
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clks[axi_sel] = imx_clk_mux("axi_sel", base + 0x14, 6, 2, axi_sels, ARRAY_SIZE(axi_sels));
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clks[usdhc1_sel] = imx_clk_mux("usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels));
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clks[usdhc2_sel] = imx_clk_mux("usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels));
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clks[usdhc3_sel] = imx_clk_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels));
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clks[usdhc4_sel] = imx_clk_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels));
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clks[enfc_sel] = imx_clk_mux("enfc_sel", base + 0x2c, 16, 2, enfc_sels, ARRAY_SIZE(enfc_sels));
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clks[emi_sel] = imx_clk_mux("emi_sel", base + 0x1c, 27, 2, emi_sels, ARRAY_SIZE(emi_sels));
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clks[emi_slow_sel] = imx_clk_mux("emi_slow_sel", base + 0x1c, 29, 2, emi_sels, ARRAY_SIZE(emi_sels));
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clks[vdo_axi_sel] = imx_clk_mux("vdo_axi_sel", base + 0x18, 11, 1, vdo_axi_sels, ARRAY_SIZE(vdo_axi_sels));
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clks[cko1_sel] = imx_clk_mux("cko1_sel", base + 0x60, 0, 4, cko1_sels, ARRAY_SIZE(cko1_sels));
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/* name reg shift width busy: reg, shift parent_names num_parents */
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clks[periph] = imx_clk_busy_mux("periph", base + 0x14, 25, 1, base + 0x48, 5, periph_sels, ARRAY_SIZE(periph_sels));
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clks[periph2] = imx_clk_busy_mux("periph2", base + 0x14, 26, 1, base + 0x48, 3, periph2_sels, ARRAY_SIZE(periph2_sels));
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/* name parent_name reg shift width */
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clks[periph_clk2] = imx_clk_divider("periph_clk2", "periph_clk2_sel", base + 0x14, 27, 3);
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clks[periph2_clk2] = imx_clk_divider("periph2_clk2", "periph2_clk2_sel", base + 0x14, 0, 3);
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clks[ipg] = imx_clk_divider("ipg", "ahb", base + 0x14, 8, 2);
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clks[ipg_per] = imx_clk_divider("ipg_per", "ipg", base + 0x1c, 0, 6);
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clks[can_root] = imx_clk_divider("can_root", "pll3_usb_otg", base + 0x20, 2, 6);
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clks[ecspi_root] = imx_clk_divider("ecspi_root", "pll3_60m", base + 0x38, 19, 6);
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clks[uart_serial_podf] = imx_clk_divider("uart_serial_podf", "pll3_80m", base + 0x24, 0, 6);
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clks[usdhc1_podf] = imx_clk_divider("usdhc1_podf", "usdhc1_sel", base + 0x24, 11, 3);
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clks[usdhc2_podf] = imx_clk_divider("usdhc2_podf", "usdhc2_sel", base + 0x24, 16, 3);
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clks[usdhc3_podf] = imx_clk_divider("usdhc3_podf", "usdhc3_sel", base + 0x24, 19, 3);
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clks[usdhc4_podf] = imx_clk_divider("usdhc4_podf", "usdhc4_sel", base + 0x24, 22, 3);
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clks[enfc_pred] = imx_clk_divider("enfc_pred", "enfc_sel", base + 0x2c, 18, 3);
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clks[enfc_podf] = imx_clk_divider("enfc_podf", "enfc_pred", base + 0x2c, 21, 6);
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clks[emi_podf] = imx_clk_divider("emi_podf", "emi_sel", base + 0x1c, 20, 3);
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clks[emi_slow_podf] = imx_clk_divider("emi_slow_podf", "emi_slow_sel", base + 0x1c, 23, 3);
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clks[cko1_podf] = imx_clk_divider("cko1_podf", "cko1_sel", base + 0x60, 4, 3);
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/* name parent_name reg shift width busy: reg, shift */
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clks[axi] = imx_clk_busy_divider("axi", "axi_sel", base + 0x14, 16, 3, base + 0x48, 0);
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clks[mmdc_ch0_axi_podf] = imx_clk_busy_divider("mmdc_ch0_axi_podf", "periph", base + 0x14, 19, 3, base + 0x48, 4);
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clks[mmdc_ch1_axi_podf] = imx_clk_busy_divider("mmdc_ch1_axi_podf", "periph2", base + 0x14, 3, 3, base + 0x48, 2);
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clks[arm] = imx_clk_busy_divider("arm", "pll1_sw", base + 0x10, 0, 3, base + 0x48, 16);
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clks[ahb] = imx_clk_busy_divider("ahb", "periph", base + 0x14, 10, 3, base + 0x48, 1);
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clkdev_add_physbase(clks[uart_serial_podf], MX6_UART1_BASE_ADDR, NULL);
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clkdev_add_physbase(clks[uart_serial_podf], MX6_UART2_BASE_ADDR, NULL);
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clkdev_add_physbase(clks[uart_serial_podf], MX6_UART3_BASE_ADDR, NULL);
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clkdev_add_physbase(clks[uart_serial_podf], MX6_UART4_BASE_ADDR, NULL);
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clkdev_add_physbase(clks[uart_serial_podf], MX6_UART5_BASE_ADDR, NULL);
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clkdev_add_physbase(clks[ecspi_root], MX6_ECSPI1_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ecspi_root], MX6_ECSPI2_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ecspi_root], MX6_ECSPI3_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ecspi_root], MX6_ECSPI4_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ecspi_root], MX6_ECSPI5_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ipg_per], MX6_GPT_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ipg], MX6_ENET_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usdhc1_podf], MX6_USDHC1_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usdhc2_podf], MX6_USDHC2_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usdhc3_podf], MX6_USDHC3_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usdhc4_podf], MX6_USDHC4_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ipg_per], MX6_I2C1_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ipg_per], MX6_I2C2_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ipg_per], MX6_I2C3_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[ahb], MX6_SATA_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usbphy1], MX6_USBPHY1_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[usbphy2], MX6_USBPHY2_BASE_ADDR, NULL);
|
|
clkdev_add_physbase(clks[enfc_podf], MX6_GPMI_BASE_ADDR, NULL);
|
|
|
|
writel(0xffffffff, ccm_base + CCGR0);
|
|
writel(0xffffffff, ccm_base + CCGR1);
|
|
writel(0xffffffff, ccm_base + CCGR2);
|
|
writel(0xffffffff, ccm_base + CCGR3);
|
|
writel(0xffffffff, ccm_base + CCGR4);
|
|
writel(0xffffffff, ccm_base + CCGR5);
|
|
writel(0xffffffff, ccm_base + CCGR6);
|
|
writel(0xffffffff, ccm_base + CCGR7);
|
|
|
|
clk_enable(clks[pll6_enet]);
|
|
clk_enable(clks[sata_ref_100m]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __maybe_unused struct of_device_id imx6_ccm_dt_ids[] = {
|
|
{
|
|
.compatible = "fsl,imx6q-ccm",
|
|
}, {
|
|
/* sentinel */
|
|
}
|
|
};
|
|
|
|
static struct driver_d imx6_ccm_driver = {
|
|
.probe = imx6_ccm_probe,
|
|
.name = "imx6-ccm",
|
|
.of_compatible = DRV_OF_COMPAT(imx6_ccm_dt_ids),
|
|
};
|
|
|
|
static int imx6_ccm_init(void)
|
|
{
|
|
return platform_driver_register(&imx6_ccm_driver);
|
|
}
|
|
core_initcall(imx6_ccm_init);
|