arch/arm/mach-imx/clk-imx6sl.c

   1 /*
   2  * Copyright 2013-2014 Freescale Semiconductor, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/clkdev.h>
  12 #include <linux/err.h>
  13 #include <linux/of.h>
  14 #include <linux/of_address.h>
  15 #include <linux/of_irq.h>
  16 #include <dt-bindings/clock/imx6sl-clock.h>
  17
  18 #include "clk.h"
  19 #include "common.h"
  20
  21 #define CCSR                    0xc
  22 #define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2)
  23 #define CACRR                   0x10
  24 #define CDHIPR                  0x48
  25 #define BM_CDHIPR_ARM_PODF_BUSY (1 << 16)
  26 #define ARM_WAIT_DIV_396M       2
  27 #define ARM_WAIT_DIV_792M       4
  28 #define ARM_WAIT_DIV_996M       6
  29
  30 #define PLL_ARM                 0x0
  31 #define BM_PLL_ARM_DIV_SELECT   (0x7f << 0)
  32 #define BM_PLL_ARM_POWERDOWN    (1 << 12)
  33 #define BM_PLL_ARM_ENABLE       (1 << 13)
  34 #define BM_PLL_ARM_LOCK         (1 << 31)
  35 #define PLL_ARM_DIV_792M        66
  36
  37 static const char *step_sels[]          = { "osc", "pll2_pfd2", };
  38 static const char *pll1_sw_sels[]       = { "pll1_sys", "step", };
  39 static const char *ocram_alt_sels[]     = { "pll2_pfd2", "pll3_pfd1", };
  40 static const char *ocram_sels[]         = { "periph", "ocram_alt_sels", };
  41 static const char *pre_periph_sels[]    = { "pll2_bus", "pll2_pfd2", "pll2_pfd0", "pll2_198m", };
  42 static const char *periph_clk2_sels[]   = { "pll3_usb_otg", "osc", "osc", "dummy", };
  43 static const char *periph2_clk2_sels[]  = { "pll3_usb_otg", "pll2_bus", };
  44 static const char *periph_sels[]        = { "pre_periph_sel", "periph_clk2_podf", };
  45 static const char *periph2_sels[]       = { "pre_periph2_sel", "periph2_clk2_podf", };
  46 static const char *csi_lcdif_sels[]     = { "mmdc", "pll2_pfd2", "pll3_120m", "pll3_pfd1", };
  47 static const char *usdhc_sels[]         = { "pll2_pfd2", "pll2_pfd0", };
  48 static const char *ssi_sels[]           = { "pll3_pfd2", "pll3_pfd3", "pll4_audio_div", "dummy", };
  49 static const char *perclk_sels[]        = { "ipg", "osc", };
  50 static const char *epdc_pxp_sels[]      = { "mmdc", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd1", };
  51 static const char *gpu2d_ovg_sels[]     = { "pll3_pfd1", "pll3_usb_otg", "pll2_bus", "pll2_pfd2", };
  52 static const char *gpu2d_sels[]         = { "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", "pll2_bus", };
  53 static const char *lcdif_pix_sels[]     = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll3_pfd0", "pll3_pfd1", };
  54 static const char *epdc_pix_sels[]      = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd1", "pll3_pfd1", };
  55 static const char *audio_sels[]         = { "pll4_audio_div", "pll3_pfd2", "pll3_pfd3", "pll3_usb_otg", };
  56 static const char *ecspi_sels[]         = { "pll3_60m", "osc", };
  57 static const char *uart_sels[]          = { "pll3_80m", "osc", };
  58
  59 static struct clk_div_table clk_enet_ref_table[] = {
  60         { .val = 0, .div = 20, },
  61         { .val = 1, .div = 10, },
  62         { .val = 2, .div = 5, },
  63         { .val = 3, .div = 4, },
  64         { }
  65 };
  66
  67 static struct clk_div_table post_div_table[] = {
  68         { .val = 2, .div = 1, },
  69         { .val = 1, .div = 2, },
  70         { .val = 0, .div = 4, },
  71         { }
  72 };
  73
  74 static struct clk_div_table video_div_table[] = {
  75         { .val = 0, .div = 1, },
  76         { .val = 1, .div = 2, },
  77         { .val = 2, .div = 1, },
  78         { .val = 3, .div = 4, },
  79         { }
  80 };
  81
  82 static struct clk *clks[IMX6SL_CLK_END];
  83 static struct clk_onecell_data clk_data;
  84 static void __iomem *ccm_base;
  85 static void __iomem *anatop_base;
  86
  87 static const u32 clks_init_on[] __initconst = {
  88         IMX6SL_CLK_IPG, IMX6SL_CLK_ARM, IMX6SL_CLK_MMDC_ROOT,
  89 };
  90
  91 /*
  92  * ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
  93  *           during WAIT mode entry process could cause cache memory
  94  *           corruption.
  95  *
  96  * Software workaround:
  97  *     To prevent this issue from occurring, software should ensure that the
  98  * ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
  99  * entering WAIT mode.
 100  *
 101  * This function will set the ARM clk to max value within the 12:5 limit.
 102  * As IPG clock is fixed at 66MHz(so ARM freq must not exceed 158.4MHz),
 103  * ARM freq are one of below setpoints: 396MHz, 792MHz and 996MHz, since
 104  * the clk APIs can NOT be called in idle thread(may cause kernel schedule
 105  * as there is sleep function in PLL wait function), so here we just slow
 106  * down ARM to below freq according to previous freq:
 107  *
 108  * run mode      wait mode
 109  * 396MHz   ->   132MHz;
 110  * 792MHz   ->   158.4MHz;
 111  * 996MHz   ->   142.3MHz;
 112  */
 113 static int imx6sl_get_arm_divider_for_wait(void)
 114 {
 115         if (readl_relaxed(ccm_base + CCSR) & BM_CCSR_PLL1_SW_CLK_SEL) {
 116                 return ARM_WAIT_DIV_396M;
 117         } else {
 118                 if ((readl_relaxed(anatop_base + PLL_ARM) &
 119                         BM_PLL_ARM_DIV_SELECT) == PLL_ARM_DIV_792M)
 120                         return ARM_WAIT_DIV_792M;
 121                 else
 122                         return ARM_WAIT_DIV_996M;
 123         }
 124 }
 125
 126 static void imx6sl_enable_pll_arm(bool enable)
 127 {
 128         static u32 saved_pll_arm;
 129         u32 val;
 130
 131         if (enable) {
 132                 saved_pll_arm = val = readl_relaxed(anatop_base + PLL_ARM);
 133                 val |= BM_PLL_ARM_ENABLE;
 134                 val &= ~BM_PLL_ARM_POWERDOWN;
 135                 writel_relaxed(val, anatop_base + PLL_ARM);
 136                 while (!(__raw_readl(anatop_base + PLL_ARM) & BM_PLL_ARM_LOCK))
 137                         ;
 138         } else {
 139                  writel_relaxed(saved_pll_arm, anatop_base + PLL_ARM);
 140         }
 141 }
 142
 143 void imx6sl_set_wait_clk(bool enter)
 144 {
 145         static unsigned long saved_arm_div;
 146         int arm_div_for_wait = imx6sl_get_arm_divider_for_wait();
 147
 148         /*
 149          * According to hardware design, arm podf change need
 150          * PLL1 clock enabled.
 151          */
 152         if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 153                 imx6sl_enable_pll_arm(true);
 154
 155         if (enter) {
 156                 saved_arm_div = readl_relaxed(ccm_base + CACRR);
 157                 writel_relaxed(arm_div_for_wait, ccm_base + CACRR);
 158         } else {
 159                 writel_relaxed(saved_arm_div, ccm_base + CACRR);
 160         }
 161         while (__raw_readl(ccm_base + CDHIPR) & BM_CDHIPR_ARM_PODF_BUSY)
 162                 ;
 163
 164         if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 165                 imx6sl_enable_pll_arm(false);
 166 }
 167
 168 static void __init imx6sl_clocks_init(struct device_node *ccm_node)
 169 {
 170         struct device_node *np;
 171         void __iomem *base;
 172         int i;
 173         int ret;
 174
 175         clks[IMX6SL_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
 176         clks[IMX6SL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0);
 177         clks[IMX6SL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0);
 178
 179         np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
 180         base = of_iomap(np, 0);
 181         WARN_ON(!base);
 182         anatop_base = base;
 183
 184         /*                                             type               name            parent  base         div_mask */
 185         clks[IMX6SL_CLK_PLL1_SYS]      = imx_clk_pllv3(IMX_PLLV3_SYS,     "pll1_sys",      "osc", base,        0x7f);
 186         clks[IMX6SL_CLK_PLL2_BUS]      = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_bus",      "osc", base + 0x30, 0x1);
 187         clks[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_pllv3(IMX_PLLV3_USB,     "pll3_usb_otg",  "osc", base + 0x10, 0x3);
 188         clks[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_pllv3(IMX_PLLV3_AV,      "pll4_audio",    "osc", base + 0x70, 0x7f);
 189         clks[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_pllv3(IMX_PLLV3_AV,      "pll5_video",    "osc", base + 0xa0, 0x7f);
 190         clks[IMX6SL_CLK_PLL6_ENET]     = imx_clk_pllv3(IMX_PLLV3_ENET,    "pll6_enet",     "osc", base + 0xe0, 0x3);
 191         clks[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll7_usb_host", "osc", base + 0x20, 0x3);
 192
 193         /*
 194          * usbphy1 and usbphy2 are implemented as dummy gates using reserve
 195          * bit 20.  They are used by phy driver to keep the refcount of
 196          * parent PLL correct. usbphy1_gate and usbphy2_gate only needs to be
 197          * turned on during boot, and software will not need to control it
 198          * anymore after that.
 199          */
 200         clks[IMX6SL_CLK_USBPHY1]      = imx_clk_gate("usbphy1",      "pll3_usb_otg",  base + 0x10, 20);
 201         clks[IMX6SL_CLK_USBPHY2]      = imx_clk_gate("usbphy2",      "pll7_usb_host", base + 0x20, 20);
 202         clks[IMX6SL_CLK_USBPHY1_GATE] = imx_clk_gate("usbphy1_gate", "dummy",         base + 0x10, 6);
 203         clks[IMX6SL_CLK_USBPHY2_GATE] = imx_clk_gate("usbphy2_gate", "dummy",         base + 0x20, 6);
 204
 205         /*                                                           dev   name              parent_name      flags                reg        shift width div: flags, div_table lock */
 206         clks[IMX6SL_CLK_PLL4_POST_DIV]  = clk_register_divider_table(NULL, "pll4_post_div",  "pll4_audio",    CLK_SET_RATE_PARENT, base + 0x70,  19, 2,   0, post_div_table, &imx_ccm_lock);
 207         clks[IMX6SL_CLK_PLL4_AUDIO_DIV] =       clk_register_divider(NULL, "pll4_audio_div", "pll4_post_div", CLK_SET_RATE_PARENT, base + 0x170, 15, 1,   0, &imx_ccm_lock);
 208         clks[IMX6SL_CLK_PLL5_POST_DIV]  = clk_register_divider_table(NULL, "pll5_post_div",  "pll5_video",    CLK_SET_RATE_PARENT, base + 0xa0,  19, 2,   0, post_div_table, &imx_ccm_lock);
 209         clks[IMX6SL_CLK_PLL5_VIDEO_DIV] = clk_register_divider_table(NULL, "pll5_video_div", "pll5_post_div", CLK_SET_RATE_PARENT, base + 0x170, 30, 2,   0, video_div_table, &imx_ccm_lock);
 210         clks[IMX6SL_CLK_ENET_REF]       = clk_register_divider_table(NULL, "enet_ref",       "pll6_enet",     0,                   base + 0xe0,  0,  2,   0, clk_enet_ref_table, &imx_ccm_lock);
 211
 212         /*                                       name         parent_name     reg           idx */
 213         clks[IMX6SL_CLK_PLL2_PFD0] = imx_clk_pfd("pll2_pfd0", "pll2_bus",     base + 0x100, 0);
 214         clks[IMX6SL_CLK_PLL2_PFD1] = imx_clk_pfd("pll2_pfd1", "pll2_bus",     base + 0x100, 1);
 215         clks[IMX6SL_CLK_PLL2_PFD2] = imx_clk_pfd("pll2_pfd2", "pll2_bus",     base + 0x100, 2);
 216         clks[IMX6SL_CLK_PLL3_PFD0] = imx_clk_pfd("pll3_pfd0", "pll3_usb_otg", base + 0xf0,  0);
 217         clks[IMX6SL_CLK_PLL3_PFD1] = imx_clk_pfd("pll3_pfd1", "pll3_usb_otg", base + 0xf0,  1);
 218         clks[IMX6SL_CLK_PLL3_PFD2] = imx_clk_pfd("pll3_pfd2", "pll3_usb_otg", base + 0xf0,  2);
 219         clks[IMX6SL_CLK_PLL3_PFD3] = imx_clk_pfd("pll3_pfd3", "pll3_usb_otg", base + 0xf0,  3);
 220
 221         /*                                                name         parent_name     mult div */
 222         clks[IMX6SL_CLK_PLL2_198M] = imx_clk_fixed_factor("pll2_198m", "pll2_pfd2",      1, 2);
 223         clks[IMX6SL_CLK_PLL3_120M] = imx_clk_fixed_factor("pll3_120m", "pll3_usb_otg",   1, 4);
 224         clks[IMX6SL_CLK_PLL3_80M]  = imx_clk_fixed_factor("pll3_80m",  "pll3_usb_otg",   1, 6);
 225         clks[IMX6SL_CLK_PLL3_60M]  = imx_clk_fixed_factor("pll3_60m",  "pll3_usb_otg",   1, 8);
 226
 227         np = ccm_node;
 228         base = of_iomap(np, 0);
 229         WARN_ON(!base);
 230         ccm_base = base;
 231
 232         /* Reuse imx6q pm code */
 233         imx6q_pm_set_ccm_base(base);
 234
 235         /*                                              name                reg       shift width parent_names     num_parents */
 236         clks[IMX6SL_CLK_STEP]             = imx_clk_mux("step",             base + 0xc,  8,  1, step_sels,         ARRAY_SIZE(step_sels));
 237         clks[IMX6SL_CLK_PLL1_SW]          = imx_clk_mux("pll1_sw",          base + 0xc,  2,  1, pll1_sw_sels,      ARRAY_SIZE(pll1_sw_sels));
 238         clks[IMX6SL_CLK_OCRAM_ALT_SEL]    = imx_clk_mux("ocram_alt_sel",    base + 0x14, 7,  1, ocram_alt_sels,    ARRAY_SIZE(ocram_alt_sels));
 239         clks[IMX6SL_CLK_OCRAM_SEL]        = imx_clk_mux("ocram_sel",        base + 0x14, 6,  1, ocram_sels,        ARRAY_SIZE(ocram_sels));
 240         clks[IMX6SL_CLK_PRE_PERIPH2_SEL]  = imx_clk_mux("pre_periph2_sel",  base + 0x18, 21, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 241         clks[IMX6SL_CLK_PRE_PERIPH_SEL]   = imx_clk_mux("pre_periph_sel",   base + 0x18, 18, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 242         clks[IMX6SL_CLK_PERIPH2_CLK2_SEL] = imx_clk_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels));
 243         clks[IMX6SL_CLK_PERIPH_CLK2_SEL]  = imx_clk_mux("periph_clk2_sel",  base + 0x18, 12, 2, periph_clk2_sels,  ARRAY_SIZE(periph_clk2_sels));
 244         clks[IMX6SL_CLK_CSI_SEL]          = imx_clk_mux("csi_sel",          base + 0x3c, 9,  2, csi_lcdif_sels,    ARRAY_SIZE(csi_lcdif_sels));
 245         clks[IMX6SL_CLK_LCDIF_AXI_SEL]    = imx_clk_mux("lcdif_axi_sel",    base + 0x3c, 14, 2, csi_lcdif_sels,    ARRAY_SIZE(csi_lcdif_sels));
 246         clks[IMX6SL_CLK_USDHC1_SEL]       = imx_clk_fixup_mux("usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 247         clks[IMX6SL_CLK_USDHC2_SEL]       = imx_clk_fixup_mux("usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 248         clks[IMX6SL_CLK_USDHC3_SEL]       = imx_clk_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 249         clks[IMX6SL_CLK_USDHC4_SEL]       = imx_clk_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 250         clks[IMX6SL_CLK_SSI1_SEL]         = imx_clk_fixup_mux("ssi1_sel",   base + 0x1c, 10, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 251         clks[IMX6SL_CLK_SSI2_SEL]         = imx_clk_fixup_mux("ssi2_sel",   base + 0x1c, 12, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 252         clks[IMX6SL_CLK_SSI3_SEL]         = imx_clk_fixup_mux("ssi3_sel",   base + 0x1c, 14, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 253         clks[IMX6SL_CLK_PERCLK_SEL]       = imx_clk_fixup_mux("perclk_sel", base + 0x1c, 6,  1, perclk_sels,       ARRAY_SIZE(perclk_sels), imx_cscmr1_fixup);
 254         clks[IMX6SL_CLK_PXP_AXI_SEL]      = imx_clk_mux("pxp_axi_sel",      base + 0x34, 6,  3, epdc_pxp_sels,     ARRAY_SIZE(epdc_pxp_sels));
 255         clks[IMX6SL_CLK_EPDC_AXI_SEL]     = imx_clk_mux("epdc_axi_sel",     base + 0x34, 15, 3, epdc_pxp_sels,     ARRAY_SIZE(epdc_pxp_sels));
 256         clks[IMX6SL_CLK_GPU2D_OVG_SEL]    = imx_clk_mux("gpu2d_ovg_sel",    base + 0x18, 4,  2, gpu2d_ovg_sels,    ARRAY_SIZE(gpu2d_ovg_sels));
 257         clks[IMX6SL_CLK_GPU2D_SEL]        = imx_clk_mux("gpu2d_sel",        base + 0x18, 8,  2, gpu2d_sels,        ARRAY_SIZE(gpu2d_sels));
 258         clks[IMX6SL_CLK_LCDIF_PIX_SEL]    = imx_clk_mux("lcdif_pix_sel",    base + 0x38, 6,  3, lcdif_pix_sels,    ARRAY_SIZE(lcdif_pix_sels));
 259         clks[IMX6SL_CLK_EPDC_PIX_SEL]     = imx_clk_mux("epdc_pix_sel",     base + 0x38, 15, 3, epdc_pix_sels,     ARRAY_SIZE(epdc_pix_sels));
 260         clks[IMX6SL_CLK_SPDIF0_SEL]       = imx_clk_mux("spdif0_sel",       base + 0x30, 20, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 261         clks[IMX6SL_CLK_SPDIF1_SEL]       = imx_clk_mux("spdif1_sel",       base + 0x30, 7,  2, audio_sels,        ARRAY_SIZE(audio_sels));
 262         clks[IMX6SL_CLK_EXTERN_AUDIO_SEL] = imx_clk_mux("extern_audio_sel", base + 0x20, 19, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 263         clks[IMX6SL_CLK_ECSPI_SEL]        = imx_clk_mux("ecspi_sel",        base + 0x38, 18, 1, ecspi_sels,        ARRAY_SIZE(ecspi_sels));
 264         clks[IMX6SL_CLK_UART_SEL]         = imx_clk_mux("uart_sel",         base + 0x24, 6,  1, uart_sels,         ARRAY_SIZE(uart_sels));
 265
 266         /*                                          name       reg        shift width busy: reg, shift parent_names  num_parents */
 267         clks[IMX6SL_CLK_PERIPH]  = imx_clk_busy_mux("periph",  base + 0x14, 25,  1,   base + 0x48, 5,  periph_sels,  ARRAY_SIZE(periph_sels));
 268         clks[IMX6SL_CLK_PERIPH2] = imx_clk_busy_mux("periph2", base + 0x14, 26,  1,   base + 0x48, 3,  periph2_sels, ARRAY_SIZE(periph2_sels));
 269
 270         /*                                                   name                 parent_name          reg       shift width */
 271         clks[IMX6SL_CLK_OCRAM_PODF]        = imx_clk_divider("ocram_podf",        "ocram_sel",         base + 0x14, 16, 3);
 272         clks[IMX6SL_CLK_PERIPH_CLK2_PODF]  = imx_clk_divider("periph_clk2_podf",  "periph_clk2_sel",   base + 0x14, 27, 3);
 273         clks[IMX6SL_CLK_PERIPH2_CLK2_PODF] = imx_clk_divider("periph2_clk2_podf", "periph2_clk2_sel",  base + 0x14, 0,  3);
 274         clks[IMX6SL_CLK_IPG]               = imx_clk_divider("ipg",               "ahb",               base + 0x14, 8,  2);
 275         clks[IMX6SL_CLK_CSI_PODF]          = imx_clk_divider("csi_podf",          "csi_sel",           base + 0x3c, 11, 3);
 276         clks[IMX6SL_CLK_LCDIF_AXI_PODF]    = imx_clk_divider("lcdif_axi_podf",    "lcdif_axi_sel",     base + 0x3c, 16, 3);
 277         clks[IMX6SL_CLK_USDHC1_PODF]       = imx_clk_divider("usdhc1_podf",       "usdhc1_sel",        base + 0x24, 11, 3);
 278         clks[IMX6SL_CLK_USDHC2_PODF]       = imx_clk_divider("usdhc2_podf",       "usdhc2_sel",        base + 0x24, 16, 3);
 279         clks[IMX6SL_CLK_USDHC3_PODF]       = imx_clk_divider("usdhc3_podf",       "usdhc3_sel",        base + 0x24, 19, 3);
 280         clks[IMX6SL_CLK_USDHC4_PODF]       = imx_clk_divider("usdhc4_podf",       "usdhc4_sel",        base + 0x24, 22, 3);
 281         clks[IMX6SL_CLK_SSI1_PRED]         = imx_clk_divider("ssi1_pred",         "ssi1_sel",          base + 0x28, 6,  3);
 282         clks[IMX6SL_CLK_SSI1_PODF]         = imx_clk_divider("ssi1_podf",         "ssi1_pred",         base + 0x28, 0,  6);
 283         clks[IMX6SL_CLK_SSI2_PRED]         = imx_clk_divider("ssi2_pred",         "ssi2_sel",          base + 0x2c, 6,  3);
 284         clks[IMX6SL_CLK_SSI2_PODF]         = imx_clk_divider("ssi2_podf",         "ssi2_pred",         base + 0x2c, 0,  6);
 285         clks[IMX6SL_CLK_SSI3_PRED]         = imx_clk_divider("ssi3_pred",         "ssi3_sel",          base + 0x28, 22, 3);
 286         clks[IMX6SL_CLK_SSI3_PODF]         = imx_clk_divider("ssi3_podf",         "ssi3_pred",         base + 0x28, 16, 6);
 287         clks[IMX6SL_CLK_PERCLK]            = imx_clk_fixup_divider("perclk",      "perclk_sel",        base + 0x1c, 0,  6, imx_cscmr1_fixup);
 288         clks[IMX6SL_CLK_PXP_AXI_PODF]      = imx_clk_divider("pxp_axi_podf",      "pxp_axi_sel",       base + 0x34, 3,  3);
 289         clks[IMX6SL_CLK_EPDC_AXI_PODF]     = imx_clk_divider("epdc_axi_podf",     "epdc_axi_sel",      base + 0x34, 12, 3);
 290         clks[IMX6SL_CLK_GPU2D_OVG_PODF]    = imx_clk_divider("gpu2d_ovg_podf",    "gpu2d_ovg_sel",     base + 0x18, 26, 3);
 291         clks[IMX6SL_CLK_GPU2D_PODF]        = imx_clk_divider("gpu2d_podf",        "gpu2d_sel",         base + 0x18, 29, 3);
 292         clks[IMX6SL_CLK_LCDIF_PIX_PRED]    = imx_clk_divider("lcdif_pix_pred",    "lcdif_pix_sel",     base + 0x38, 3,  3);
 293         clks[IMX6SL_CLK_EPDC_PIX_PRED]     = imx_clk_divider("epdc_pix_pred",     "epdc_pix_sel",      base + 0x38, 12, 3);
 294         clks[IMX6SL_CLK_LCDIF_PIX_PODF]    = imx_clk_fixup_divider("lcdif_pix_podf", "lcdif_pix_pred", base + 0x1c, 20, 3, imx_cscmr1_fixup);
 295         clks[IMX6SL_CLK_EPDC_PIX_PODF]     = imx_clk_divider("epdc_pix_podf",     "epdc_pix_pred",     base + 0x18, 23, 3);
 296         clks[IMX6SL_CLK_SPDIF0_PRED]       = imx_clk_divider("spdif0_pred",       "spdif0_sel",        base + 0x30, 25, 3);
 297         clks[IMX6SL_CLK_SPDIF0_PODF]       = imx_clk_divider("spdif0_podf",       "spdif0_pred",       base + 0x30, 22, 3);
 298         clks[IMX6SL_CLK_SPDIF1_PRED]       = imx_clk_divider("spdif1_pred",       "spdif1_sel",        base + 0x30, 12, 3);
 299         clks[IMX6SL_CLK_SPDIF1_PODF]       = imx_clk_divider("spdif1_podf",       "spdif1_pred",       base + 0x30, 9,  3);
 300         clks[IMX6SL_CLK_EXTERN_AUDIO_PRED] = imx_clk_divider("extern_audio_pred", "extern_audio_sel",  base + 0x28, 9,  3);
 301         clks[IMX6SL_CLK_EXTERN_AUDIO_PODF] = imx_clk_divider("extern_audio_podf", "extern_audio_pred", base + 0x28, 25, 3);
 302         clks[IMX6SL_CLK_ECSPI_ROOT]        = imx_clk_divider("ecspi_root",        "ecspi_sel",         base + 0x38, 19, 6);
 303         clks[IMX6SL_CLK_UART_ROOT]         = imx_clk_divider("uart_root",         "uart_sel",          base + 0x24, 0,  6);
 304
 305         /*                                                name         parent_name reg       shift width busy: reg, shift */
 306         clks[IMX6SL_CLK_AHB]       = imx_clk_busy_divider("ahb",       "periph",  base + 0x14, 10, 3,    base + 0x48, 1);
 307         clks[IMX6SL_CLK_MMDC_ROOT] = imx_clk_busy_divider("mmdc",      "periph2", base + 0x14, 3,  3,    base + 0x48, 2);
 308         clks[IMX6SL_CLK_ARM]       = imx_clk_busy_divider("arm",       "pll1_sw", base + 0x10, 0,  3,    base + 0x48, 16);
 309
 310         /*                                            name            parent_name          reg         shift */
 311         clks[IMX6SL_CLK_ECSPI1]       = imx_clk_gate2("ecspi1",       "ecspi_root",        base + 0x6c, 0);
 312         clks[IMX6SL_CLK_ECSPI2]       = imx_clk_gate2("ecspi2",       "ecspi_root",        base + 0x6c, 2);
 313         clks[IMX6SL_CLK_ECSPI3]       = imx_clk_gate2("ecspi3",       "ecspi_root",        base + 0x6c, 4);
 314         clks[IMX6SL_CLK_ECSPI4]       = imx_clk_gate2("ecspi4",       "ecspi_root",        base + 0x6c, 6);
 315         clks[IMX6SL_CLK_EPIT1]        = imx_clk_gate2("epit1",        "perclk",            base + 0x6c, 12);
 316         clks[IMX6SL_CLK_EPIT2]        = imx_clk_gate2("epit2",        "perclk",            base + 0x6c, 14);
 317         clks[IMX6SL_CLK_EXTERN_AUDIO] = imx_clk_gate2("extern_audio", "extern_audio_podf", base + 0x6c, 16);
 318         clks[IMX6SL_CLK_GPT]          = imx_clk_gate2("gpt",          "perclk",            base + 0x6c, 20);
 319         clks[IMX6SL_CLK_GPT_SERIAL]   = imx_clk_gate2("gpt_serial",   "perclk",            base + 0x6c, 22);
 320         clks[IMX6SL_CLK_GPU2D_OVG]    = imx_clk_gate2("gpu2d_ovg",    "gpu2d_ovg_podf",    base + 0x6c, 26);
 321         clks[IMX6SL_CLK_I2C1]         = imx_clk_gate2("i2c1",         "perclk",            base + 0x70, 6);
 322         clks[IMX6SL_CLK_I2C2]         = imx_clk_gate2("i2c2",         "perclk",            base + 0x70, 8);
 323         clks[IMX6SL_CLK_I2C3]         = imx_clk_gate2("i2c3",         "perclk",            base + 0x70, 10);
 324         clks[IMX6SL_CLK_OCOTP]        = imx_clk_gate2("ocotp",        "ipg",               base + 0x70, 12);
 325         clks[IMX6SL_CLK_CSI]          = imx_clk_gate2("csi",          "csi_podf",          base + 0x74, 0);
 326         clks[IMX6SL_CLK_PXP_AXI]      = imx_clk_gate2("pxp_axi",      "pxp_axi_podf",      base + 0x74, 2);
 327         clks[IMX6SL_CLK_EPDC_AXI]     = imx_clk_gate2("epdc_axi",     "epdc_axi_podf",     base + 0x74, 4);
 328         clks[IMX6SL_CLK_LCDIF_AXI]    = imx_clk_gate2("lcdif_axi",    "lcdif_axi_podf",    base + 0x74, 6);
 329         clks[IMX6SL_CLK_LCDIF_PIX]    = imx_clk_gate2("lcdif_pix",    "lcdif_pix_podf",    base + 0x74, 8);
 330         clks[IMX6SL_CLK_EPDC_PIX]     = imx_clk_gate2("epdc_pix",     "epdc_pix_podf",     base + 0x74, 10);
 331         clks[IMX6SL_CLK_OCRAM]        = imx_clk_gate2("ocram",        "ocram_podf",        base + 0x74, 28);
 332         clks[IMX6SL_CLK_PWM1]         = imx_clk_gate2("pwm1",         "perclk",            base + 0x78, 16);
 333         clks[IMX6SL_CLK_PWM2]         = imx_clk_gate2("pwm2",         "perclk",            base + 0x78, 18);
 334         clks[IMX6SL_CLK_PWM3]         = imx_clk_gate2("pwm3",         "perclk",            base + 0x78, 20);
 335         clks[IMX6SL_CLK_PWM4]         = imx_clk_gate2("pwm4",         "perclk",            base + 0x78, 22);
 336         clks[IMX6SL_CLK_SDMA]         = imx_clk_gate2("sdma",         "ipg",               base + 0x7c, 6);
 337         clks[IMX6SL_CLK_SPBA]         = imx_clk_gate2("spba",         "ipg",               base + 0x7c, 12);
 338         clks[IMX6SL_CLK_SPDIF]        = imx_clk_gate2("spdif",        "spdif0_podf",       base + 0x7c, 14);
 339         clks[IMX6SL_CLK_SSI1]         = imx_clk_gate2("ssi1",         "ssi1_podf",         base + 0x7c, 18);
 340         clks[IMX6SL_CLK_SSI2]         = imx_clk_gate2("ssi2",         "ssi2_podf",         base + 0x7c, 20);
 341         clks[IMX6SL_CLK_SSI3]         = imx_clk_gate2("ssi3",         "ssi3_podf",         base + 0x7c, 22);
 342         clks[IMX6SL_CLK_UART]         = imx_clk_gate2("uart",         "ipg",               base + 0x7c, 24);
 343         clks[IMX6SL_CLK_UART_SERIAL]  = imx_clk_gate2("uart_serial",  "uart_root",         base + 0x7c, 26);
 344         clks[IMX6SL_CLK_USBOH3]       = imx_clk_gate2("usboh3",       "ipg",               base + 0x80, 0);
 345         clks[IMX6SL_CLK_USDHC1]       = imx_clk_gate2("usdhc1",       "usdhc1_podf",       base + 0x80, 2);
 346         clks[IMX6SL_CLK_USDHC2]       = imx_clk_gate2("usdhc2",       "usdhc2_podf",       base + 0x80, 4);
 347         clks[IMX6SL_CLK_USDHC3]       = imx_clk_gate2("usdhc3",       "usdhc3_podf",       base + 0x80, 6);
 348         clks[IMX6SL_CLK_USDHC4]       = imx_clk_gate2("usdhc4",       "usdhc4_podf",       base + 0x80, 8);
 349
 350         for (i = 0; i < ARRAY_SIZE(clks); i++)
 351                 if (IS_ERR(clks[i]))
 352                         pr_err("i.MX6SL clk %d: register failed with %ld\n",
 353                                 i, PTR_ERR(clks[i]));
 354
 355         clk_data.clks = clks;
 356         clk_data.clk_num = ARRAY_SIZE(clks);
 357         of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
 358
 359         clk_register_clkdev(clks[IMX6SL_CLK_GPT], "ipg", "imx-gpt.0");
 360         clk_register_clkdev(clks[IMX6SL_CLK_GPT_SERIAL], "per", "imx-gpt.0");
 361
 362         /* Ensure the AHB clk is at 132MHz. */
 363         ret = clk_set_rate(clks[IMX6SL_CLK_AHB], 132000000);
 364         if (ret)
 365                 pr_warn("%s: failed to set AHB clock rate %d!\n",
 366                         __func__, ret);
 367
 368         /*
 369          * Make sure those always on clocks are enabled to maintain the correct
 370          * usecount and enabling/disabling of parent PLLs.
 371          */
 372         for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
 373                 clk_prepare_enable(clks[clks_init_on[i]]);
 374
 375         if (IS_ENABLED(CONFIG_USB_MXS_PHY)) {
 376                 clk_prepare_enable(clks[IMX6SL_CLK_USBPHY1_GATE]);
 377                 clk_prepare_enable(clks[IMX6SL_CLK_USBPHY2_GATE]);
 378         }
 379
 380         /* Audio-related clocks configuration */
 381         clk_set_parent(clks[IMX6SL_CLK_SPDIF0_SEL], clks[IMX6SL_CLK_PLL3_PFD3]);
 382
 383         /* Set initial power mode */
 384         imx6q_set_lpm(WAIT_CLOCKED);
 385
 386         np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-gpt");
 387         mxc_timer_init_dt(np);
 388 }
 389 CLK_OF_DECLARE(imx6sl, "fsl,imx6sl-ccm", imx6sl_clocks_init);