drivers/clk/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
  20 #define CCDR                            0x4
  21 #define BM_CCM_CCDR_MMDC_CH0_MASK       (1 << 17)
  22 #define CCSR                    0xc
  23 #define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2)
  24 #define CACRR                   0x10
  25 #define CDHIPR                  0x48
  26 #define BM_CDHIPR_ARM_PODF_BUSY (1 << 16)
  27 #define ARM_WAIT_DIV_396M       2
  28 #define ARM_WAIT_DIV_792M       4
  29 #define ARM_WAIT_DIV_996M       6
  30
  31 #define PLL_ARM                 0x0
  32 #define BM_PLL_ARM_DIV_SELECT   (0x7f << 0)
  33 #define BM_PLL_ARM_POWERDOWN    (1 << 12)
  34 #define BM_PLL_ARM_ENABLE       (1 << 13)
  35 #define BM_PLL_ARM_LOCK         (1 << 31)
  36 #define PLL_ARM_DIV_792M        66
  37
  38 static const char *step_sels[]          = { "osc", "pll2_pfd2", };
  39 static const char *pll1_sw_sels[]       = { "pll1_sys", "step", };
  40 static const char *ocram_alt_sels[]     = { "pll2_pfd2", "pll3_pfd1", };
  41 static const char *ocram_sels[]         = { "periph", "ocram_alt_sels", };
  42 static const char *pre_periph_sels[]    = { "pll2_bus", "pll2_pfd2", "pll2_pfd0", "pll2_198m", };
  43 static const char *periph_clk2_sels[]   = { "pll3_usb_otg", "osc", "osc", "dummy", };
  44 static const char *periph2_clk2_sels[]  = { "pll3_usb_otg", "pll2_bus", };
  45 static const char *periph_sels[]        = { "pre_periph_sel", "periph_clk2_podf", };
  46 static const char *periph2_sels[]       = { "pre_periph2_sel", "periph2_clk2_podf", };
  47 static const char *csi_sels[]           = { "osc", "pll2_pfd2", "pll3_120m", "pll3_pfd1", };
  48 static const char *lcdif_axi_sels[]     = { "pll2_bus", "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", };
  49 static const char *usdhc_sels[]         = { "pll2_pfd2", "pll2_pfd0", };
  50 static const char *ssi_sels[]           = { "pll3_pfd2", "pll3_pfd3", "pll4_audio_div", "dummy", };
  51 static const char *perclk_sels[]        = { "ipg", "osc", };
  52 static const char *pxp_axi_sels[]       = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd3", };
  53 static const char *epdc_axi_sels[]      = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd2", };
  54 static const char *gpu2d_ovg_sels[]     = { "pll3_pfd1", "pll3_usb_otg", "pll2_bus", "pll2_pfd2", };
  55 static const char *gpu2d_sels[]         = { "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", "pll2_bus", };
  56 static const char *lcdif_pix_sels[]     = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll3_pfd0", "pll3_pfd1", };
  57 static const char *epdc_pix_sels[]      = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd1", "pll3_pfd1", };
  58 static const char *audio_sels[]         = { "pll4_audio_div", "pll3_pfd2", "pll3_pfd3", "pll3_usb_otg", };
  59 static const char *ecspi_sels[]         = { "pll3_60m", "osc", };
  60 static const char *uart_sels[]          = { "pll3_80m", "osc", };
  61 static const char *lvds_sels[]          = {
  62         "pll1_sys", "pll2_bus", "pll2_pfd0", "pll2_pfd1", "pll2_pfd2", "dummy", "pll4_audio", "pll5_video",
  63         "dummy", "enet_ref", "dummy", "dummy", "pll3_usb_otg", "pll7_usb_host", "pll3_pfd0", "pll3_pfd1",
  64         "pll3_pfd2", "pll3_pfd3", "osc", "dummy", "dummy", "dummy", "dummy", "dummy",
  65          "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
  66 };
  67 static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", };
  68 static const char *pll1_bypass_sels[]   = { "pll1", "pll1_bypass_src", };
  69 static const char *pll2_bypass_sels[]   = { "pll2", "pll2_bypass_src", };
  70 static const char *pll3_bypass_sels[]   = { "pll3", "pll3_bypass_src", };
  71 static const char *pll4_bypass_sels[]   = { "pll4", "pll4_bypass_src", };
  72 static const char *pll5_bypass_sels[]   = { "pll5", "pll5_bypass_src", };
  73 static const char *pll6_bypass_sels[]   = { "pll6", "pll6_bypass_src", };
  74 static const char *pll7_bypass_sels[]   = { "pll7", "pll7_bypass_src", };
  75
  76 static const struct clk_div_table clk_enet_ref_table[] = {
  77         { .val = 0, .div = 20, },
  78         { .val = 1, .div = 10, },
  79         { .val = 2, .div = 5, },
  80         { .val = 3, .div = 4, },
  81         { }
  82 };
  83
  84 static const struct clk_div_table post_div_table[] = {
  85         { .val = 2, .div = 1, },
  86         { .val = 1, .div = 2, },
  87         { .val = 0, .div = 4, },
  88         { }
  89 };
  90
  91 static const struct clk_div_table video_div_table[] = {
  92         { .val = 0, .div = 1, },
  93         { .val = 1, .div = 2, },
  94         { .val = 2, .div = 1, },
  95         { .val = 3, .div = 4, },
  96         { }
  97 };
  98
  99 static unsigned int share_count_ssi1;
 100 static unsigned int share_count_ssi2;
 101 static unsigned int share_count_ssi3;
 102 static unsigned int share_count_spdif;
 103
 104 static struct clk *clks[IMX6SL_CLK_END];
 105 static struct clk_onecell_data clk_data;
 106 static void __iomem *ccm_base;
 107 static void __iomem *anatop_base;
 108
 109 static const u32 clks_init_on[] __initconst = {
 110         IMX6SL_CLK_IPG, IMX6SL_CLK_ARM, IMX6SL_CLK_MMDC_ROOT,
 111 };
 112
 113 /*
 114  * ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
 115  *           during WAIT mode entry process could cause cache memory
 116  *           corruption.
 117  *
 118  * Software workaround:
 119  *     To prevent this issue from occurring, software should ensure that the
 120  * ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
 121  * entering WAIT mode.
 122  *
 123  * This function will set the ARM clk to max value within the 12:5 limit.
 124  * As IPG clock is fixed at 66MHz(so ARM freq must not exceed 158.4MHz),
 125  * ARM freq are one of below setpoints: 396MHz, 792MHz and 996MHz, since
 126  * the clk APIs can NOT be called in idle thread(may cause kernel schedule
 127  * as there is sleep function in PLL wait function), so here we just slow
 128  * down ARM to below freq according to previous freq:
 129  *
 130  * run mode      wait mode
 131  * 396MHz   ->   132MHz;
 132  * 792MHz   ->   158.4MHz;
 133  * 996MHz   ->   142.3MHz;
 134  */
 135 static int imx6sl_get_arm_divider_for_wait(void)
 136 {
 137         if (readl_relaxed(ccm_base + CCSR) & BM_CCSR_PLL1_SW_CLK_SEL) {
 138                 return ARM_WAIT_DIV_396M;
 139         } else {
 140                 if ((readl_relaxed(anatop_base + PLL_ARM) &
 141                         BM_PLL_ARM_DIV_SELECT) == PLL_ARM_DIV_792M)
 142                         return ARM_WAIT_DIV_792M;
 143                 else
 144                         return ARM_WAIT_DIV_996M;
 145         }
 146 }
 147
 148 static void imx6sl_enable_pll_arm(bool enable)
 149 {
 150         static u32 saved_pll_arm;
 151         u32 val;
 152
 153         if (enable) {
 154                 saved_pll_arm = val = readl_relaxed(anatop_base + PLL_ARM);
 155                 val |= BM_PLL_ARM_ENABLE;
 156                 val &= ~BM_PLL_ARM_POWERDOWN;
 157                 writel_relaxed(val, anatop_base + PLL_ARM);
 158                 while (!(__raw_readl(anatop_base + PLL_ARM) & BM_PLL_ARM_LOCK))
 159                         ;
 160         } else {
 161                  writel_relaxed(saved_pll_arm, anatop_base + PLL_ARM);
 162         }
 163 }
 164
 165 void imx6sl_set_wait_clk(bool enter)
 166 {
 167         static unsigned long saved_arm_div;
 168         int arm_div_for_wait = imx6sl_get_arm_divider_for_wait();
 169
 170         /*
 171          * According to hardware design, arm podf change need
 172          * PLL1 clock enabled.
 173          */
 174         if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 175                 imx6sl_enable_pll_arm(true);
 176
 177         if (enter) {
 178                 saved_arm_div = readl_relaxed(ccm_base + CACRR);
 179                 writel_relaxed(arm_div_for_wait, ccm_base + CACRR);
 180         } else {
 181                 writel_relaxed(saved_arm_div, ccm_base + CACRR);
 182         }
 183         while (__raw_readl(ccm_base + CDHIPR) & BM_CDHIPR_ARM_PODF_BUSY)
 184                 ;
 185
 186         if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 187                 imx6sl_enable_pll_arm(false);
 188 }
 189
 190 static struct clk ** const uart_clks[] __initconst = {
 191         &clks[IMX6SL_CLK_UART],
 192         &clks[IMX6SL_CLK_UART_SERIAL],
 193         NULL
 194 };
 195
 196 static void __init imx6sl_clocks_init(struct device_node *ccm_node)
 197 {
 198         struct device_node *np;
 199         void __iomem *base;
 200         int i;
 201         int ret;
 202
 203         clks[IMX6SL_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
 204         clks[IMX6SL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0);
 205         clks[IMX6SL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0);
 206         /* Clock source from external clock via CLK1 PAD */
 207         clks[IMX6SL_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
 208
 209         np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
 210         base = of_iomap(np, 0);
 211         WARN_ON(!base);
 212         anatop_base = base;
 213
 214         clks[IMX6SL_PLL1_BYPASS_SRC] = imx_clk_mux("pll1_bypass_src", base + 0x00, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 215         clks[IMX6SL_PLL2_BYPASS_SRC] = imx_clk_mux("pll2_bypass_src", base + 0x30, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 216         clks[IMX6SL_PLL3_BYPASS_SRC] = imx_clk_mux("pll3_bypass_src", base + 0x10, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 217         clks[IMX6SL_PLL4_BYPASS_SRC] = imx_clk_mux("pll4_bypass_src", base + 0x70, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 218         clks[IMX6SL_PLL5_BYPASS_SRC] = imx_clk_mux("pll5_bypass_src", base + 0xa0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 219         clks[IMX6SL_PLL6_BYPASS_SRC] = imx_clk_mux("pll6_bypass_src", base + 0xe0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 220         clks[IMX6SL_PLL7_BYPASS_SRC] = imx_clk_mux("pll7_bypass_src", base + 0x20, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 221
 222         /*                                    type               name    parent_name        base         div_mask */
 223         clks[IMX6SL_CLK_PLL1] = imx_clk_pllv3(IMX_PLLV3_SYS,     "pll1", "osc", base + 0x00, 0x7f);
 224         clks[IMX6SL_CLK_PLL2] = imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2", "osc", base + 0x30, 0x1);
 225         clks[IMX6SL_CLK_PLL3] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll3", "osc", base + 0x10, 0x3);
 226         clks[IMX6SL_CLK_PLL4] = imx_clk_pllv3(IMX_PLLV3_AV,      "pll4", "osc", base + 0x70, 0x7f);
 227         clks[IMX6SL_CLK_PLL5] = imx_clk_pllv3(IMX_PLLV3_AV,      "pll5", "osc", base + 0xa0, 0x7f);
 228         clks[IMX6SL_CLK_PLL6] = imx_clk_pllv3(IMX_PLLV3_ENET,    "pll6", "osc", base + 0xe0, 0x3);
 229         clks[IMX6SL_CLK_PLL7] = imx_clk_pllv3(IMX_PLLV3_USB,     "pll7", "osc", base + 0x20, 0x3);
 230
 231         clks[IMX6SL_PLL1_BYPASS] = imx_clk_mux_flags("pll1_bypass", base + 0x00, 16, 1, pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT);
 232         clks[IMX6SL_PLL2_BYPASS] = imx_clk_mux_flags("pll2_bypass", base + 0x30, 16, 1, pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT);
 233         clks[IMX6SL_PLL3_BYPASS] = imx_clk_mux_flags("pll3_bypass", base + 0x10, 16, 1, pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT);
 234         clks[IMX6SL_PLL4_BYPASS] = imx_clk_mux_flags("pll4_bypass", base + 0x70, 16, 1, pll4_bypass_sels, ARRAY_SIZE(pll4_bypass_sels), CLK_SET_RATE_PARENT);
 235         clks[IMX6SL_PLL5_BYPASS] = imx_clk_mux_flags("pll5_bypass", base + 0xa0, 16, 1, pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT);
 236         clks[IMX6SL_PLL6_BYPASS] = imx_clk_mux_flags("pll6_bypass", base + 0xe0, 16, 1, pll6_bypass_sels, ARRAY_SIZE(pll6_bypass_sels), CLK_SET_RATE_PARENT);
 237         clks[IMX6SL_PLL7_BYPASS] = imx_clk_mux_flags("pll7_bypass", base + 0x20, 16, 1, pll7_bypass_sels, ARRAY_SIZE(pll7_bypass_sels), CLK_SET_RATE_PARENT);
 238
 239         /* Do not bypass PLLs initially */
 240         clk_set_parent(clks[IMX6SL_PLL1_BYPASS], clks[IMX6SL_CLK_PLL1]);
 241         clk_set_parent(clks[IMX6SL_PLL2_BYPASS], clks[IMX6SL_CLK_PLL2]);
 242         clk_set_parent(clks[IMX6SL_PLL3_BYPASS], clks[IMX6SL_CLK_PLL3]);
 243         clk_set_parent(clks[IMX6SL_PLL4_BYPASS], clks[IMX6SL_CLK_PLL4]);
 244         clk_set_parent(clks[IMX6SL_PLL5_BYPASS], clks[IMX6SL_CLK_PLL5]);
 245         clk_set_parent(clks[IMX6SL_PLL6_BYPASS], clks[IMX6SL_CLK_PLL6]);
 246         clk_set_parent(clks[IMX6SL_PLL7_BYPASS], clks[IMX6SL_CLK_PLL7]);
 247
 248         clks[IMX6SL_CLK_PLL1_SYS]      = imx_clk_gate("pll1_sys",      "pll1_bypass", base + 0x00, 13);
 249         clks[IMX6SL_CLK_PLL2_BUS]      = imx_clk_gate("pll2_bus",      "pll2_bypass", base + 0x30, 13);
 250         clks[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_gate("pll3_usb_otg",  "pll3_bypass", base + 0x10, 13);
 251         clks[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_gate("pll4_audio",    "pll4_bypass", base + 0x70, 13);
 252         clks[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_gate("pll5_video",    "pll5_bypass", base + 0xa0, 13);
 253         clks[IMX6SL_CLK_PLL6_ENET]     = imx_clk_gate("pll6_enet",     "pll6_bypass", base + 0xe0, 13);
 254         clks[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_gate("pll7_usb_host", "pll7_bypass", base + 0x20, 13);
 255
 256         clks[IMX6SL_CLK_LVDS1_SEL] = imx_clk_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
 257         clks[IMX6SL_CLK_LVDS1_OUT] = imx_clk_gate_exclusive("lvds1_out", "lvds1_sel", base + 0x160, 10, BIT(12));
 258         clks[IMX6SL_CLK_LVDS1_IN] = imx_clk_gate_exclusive("lvds1_in", "anaclk1", base + 0x160, 12, BIT(10));
 259
 260         /*
 261          * usbphy1 and usbphy2 are implemented as dummy gates using reserve
 262          * bit 20.  They are used by phy driver to keep the refcount of
 263          * parent PLL correct. usbphy1_gate and usbphy2_gate only needs to be
 264          * turned on during boot, and software will not need to control it
 265          * anymore after that.
 266          */
 267         clks[IMX6SL_CLK_USBPHY1]      = imx_clk_gate("usbphy1",      "pll3_usb_otg",  base + 0x10, 20);
 268         clks[IMX6SL_CLK_USBPHY2]      = imx_clk_gate("usbphy2",      "pll7_usb_host", base + 0x20, 20);
 269         clks[IMX6SL_CLK_USBPHY1_GATE] = imx_clk_gate("usbphy1_gate", "dummy",         base + 0x10, 6);
 270         clks[IMX6SL_CLK_USBPHY2_GATE] = imx_clk_gate("usbphy2_gate", "dummy",         base + 0x20, 6);
 271
 272         /*                                                           dev   name              parent_name      flags                reg        shift width div: flags, div_table lock */
 273         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);
 274         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);
 275         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);
 276         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);
 277         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);
 278
 279         /*                                       name         parent_name     reg           idx */
 280         clks[IMX6SL_CLK_PLL2_PFD0] = imx_clk_pfd("pll2_pfd0", "pll2_bus",     base + 0x100, 0);
 281         clks[IMX6SL_CLK_PLL2_PFD1] = imx_clk_pfd("pll2_pfd1", "pll2_bus",     base + 0x100, 1);
 282         clks[IMX6SL_CLK_PLL2_PFD2] = imx_clk_pfd("pll2_pfd2", "pll2_bus",     base + 0x100, 2);
 283         clks[IMX6SL_CLK_PLL3_PFD0] = imx_clk_pfd("pll3_pfd0", "pll3_usb_otg", base + 0xf0,  0);
 284         clks[IMX6SL_CLK_PLL3_PFD1] = imx_clk_pfd("pll3_pfd1", "pll3_usb_otg", base + 0xf0,  1);
 285         clks[IMX6SL_CLK_PLL3_PFD2] = imx_clk_pfd("pll3_pfd2", "pll3_usb_otg", base + 0xf0,  2);
 286         clks[IMX6SL_CLK_PLL3_PFD3] = imx_clk_pfd("pll3_pfd3", "pll3_usb_otg", base + 0xf0,  3);
 287
 288         /*                                                name         parent_name     mult div */
 289         clks[IMX6SL_CLK_PLL2_198M] = imx_clk_fixed_factor("pll2_198m", "pll2_pfd2",      1, 2);
 290         clks[IMX6SL_CLK_PLL3_120M] = imx_clk_fixed_factor("pll3_120m", "pll3_usb_otg",   1, 4);
 291         clks[IMX6SL_CLK_PLL3_80M]  = imx_clk_fixed_factor("pll3_80m",  "pll3_usb_otg",   1, 6);
 292         clks[IMX6SL_CLK_PLL3_60M]  = imx_clk_fixed_factor("pll3_60m",  "pll3_usb_otg",   1, 8);
 293
 294         np = ccm_node;
 295         base = of_iomap(np, 0);
 296         WARN_ON(!base);
 297         ccm_base = base;
 298
 299         /*                                              name                reg       shift width parent_names     num_parents */
 300         clks[IMX6SL_CLK_STEP]             = imx_clk_mux("step",             base + 0xc,  8,  1, step_sels,         ARRAY_SIZE(step_sels));
 301         clks[IMX6SL_CLK_PLL1_SW]          = imx_clk_mux("pll1_sw",          base + 0xc,  2,  1, pll1_sw_sels,      ARRAY_SIZE(pll1_sw_sels));
 302         clks[IMX6SL_CLK_OCRAM_ALT_SEL]    = imx_clk_mux("ocram_alt_sel",    base + 0x14, 7,  1, ocram_alt_sels,    ARRAY_SIZE(ocram_alt_sels));
 303         clks[IMX6SL_CLK_OCRAM_SEL]        = imx_clk_mux("ocram_sel",        base + 0x14, 6,  1, ocram_sels,        ARRAY_SIZE(ocram_sels));
 304         clks[IMX6SL_CLK_PRE_PERIPH2_SEL]  = imx_clk_mux("pre_periph2_sel",  base + 0x18, 21, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 305         clks[IMX6SL_CLK_PRE_PERIPH_SEL]   = imx_clk_mux("pre_periph_sel",   base + 0x18, 18, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 306         clks[IMX6SL_CLK_PERIPH2_CLK2_SEL] = imx_clk_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels));
 307         clks[IMX6SL_CLK_PERIPH_CLK2_SEL]  = imx_clk_mux("periph_clk2_sel",  base + 0x18, 12, 2, periph_clk2_sels,  ARRAY_SIZE(periph_clk2_sels));
 308         clks[IMX6SL_CLK_CSI_SEL]          = imx_clk_mux("csi_sel",          base + 0x3c, 9,  2, csi_sels,          ARRAY_SIZE(csi_sels));
 309         clks[IMX6SL_CLK_LCDIF_AXI_SEL]    = imx_clk_mux("lcdif_axi_sel",    base + 0x3c, 14, 2, lcdif_axi_sels,    ARRAY_SIZE(lcdif_axi_sels));
 310         clks[IMX6SL_CLK_USDHC1_SEL]       = imx_clk_fixup_mux("usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 311         clks[IMX6SL_CLK_USDHC2_SEL]       = imx_clk_fixup_mux("usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 312         clks[IMX6SL_CLK_USDHC3_SEL]       = imx_clk_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 313         clks[IMX6SL_CLK_USDHC4_SEL]       = imx_clk_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 314         clks[IMX6SL_CLK_SSI1_SEL]         = imx_clk_fixup_mux("ssi1_sel",   base + 0x1c, 10, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 315         clks[IMX6SL_CLK_SSI2_SEL]         = imx_clk_fixup_mux("ssi2_sel",   base + 0x1c, 12, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 316         clks[IMX6SL_CLK_SSI3_SEL]         = imx_clk_fixup_mux("ssi3_sel",   base + 0x1c, 14, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 317         clks[IMX6SL_CLK_PERCLK_SEL]       = imx_clk_fixup_mux("perclk_sel", base + 0x1c, 6,  1, perclk_sels,       ARRAY_SIZE(perclk_sels), imx_cscmr1_fixup);
 318         clks[IMX6SL_CLK_PXP_AXI_SEL]      = imx_clk_mux("pxp_axi_sel",      base + 0x34, 6,  3, pxp_axi_sels,      ARRAY_SIZE(pxp_axi_sels));
 319         clks[IMX6SL_CLK_EPDC_AXI_SEL]     = imx_clk_mux("epdc_axi_sel",     base + 0x34, 15, 3, epdc_axi_sels,     ARRAY_SIZE(epdc_axi_sels));
 320         clks[IMX6SL_CLK_GPU2D_OVG_SEL]    = imx_clk_mux("gpu2d_ovg_sel",    base + 0x18, 4,  2, gpu2d_ovg_sels,    ARRAY_SIZE(gpu2d_ovg_sels));
 321         clks[IMX6SL_CLK_GPU2D_SEL]        = imx_clk_mux("gpu2d_sel",        base + 0x18, 8,  2, gpu2d_sels,        ARRAY_SIZE(gpu2d_sels));
 322         clks[IMX6SL_CLK_LCDIF_PIX_SEL]    = imx_clk_mux("lcdif_pix_sel",    base + 0x38, 6,  3, lcdif_pix_sels,    ARRAY_SIZE(lcdif_pix_sels));
 323         clks[IMX6SL_CLK_EPDC_PIX_SEL]     = imx_clk_mux("epdc_pix_sel",     base + 0x38, 15, 3, epdc_pix_sels,     ARRAY_SIZE(epdc_pix_sels));
 324         clks[IMX6SL_CLK_SPDIF0_SEL]       = imx_clk_mux("spdif0_sel",       base + 0x30, 20, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 325         clks[IMX6SL_CLK_SPDIF1_SEL]       = imx_clk_mux("spdif1_sel",       base + 0x30, 7,  2, audio_sels,        ARRAY_SIZE(audio_sels));
 326         clks[IMX6SL_CLK_EXTERN_AUDIO_SEL] = imx_clk_mux("extern_audio_sel", base + 0x20, 19, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 327         clks[IMX6SL_CLK_ECSPI_SEL]        = imx_clk_mux("ecspi_sel",        base + 0x38, 18, 1, ecspi_sels,        ARRAY_SIZE(ecspi_sels));
 328         clks[IMX6SL_CLK_UART_SEL]         = imx_clk_mux("uart_sel",         base + 0x24, 6,  1, uart_sels,         ARRAY_SIZE(uart_sels));
 329
 330         /*                                          name       reg        shift width busy: reg, shift parent_names  num_parents */
 331         clks[IMX6SL_CLK_PERIPH]  = imx_clk_busy_mux("periph",  base + 0x14, 25,  1,   base + 0x48, 5,  periph_sels,  ARRAY_SIZE(periph_sels));
 332         clks[IMX6SL_CLK_PERIPH2] = imx_clk_busy_mux("periph2", base + 0x14, 26,  1,   base + 0x48, 3,  periph2_sels, ARRAY_SIZE(periph2_sels));
 333
 334         /*                                                   name                 parent_name          reg       shift width */
 335         clks[IMX6SL_CLK_OCRAM_PODF]        = imx_clk_divider("ocram_podf",        "ocram_sel",         base + 0x14, 16, 3);
 336         clks[IMX6SL_CLK_PERIPH_CLK2_PODF]  = imx_clk_divider("periph_clk2_podf",  "periph_clk2_sel",   base + 0x14, 27, 3);
 337         clks[IMX6SL_CLK_PERIPH2_CLK2_PODF] = imx_clk_divider("periph2_clk2_podf", "periph2_clk2_sel",  base + 0x14, 0,  3);
 338         clks[IMX6SL_CLK_IPG]               = imx_clk_divider("ipg",               "ahb",               base + 0x14, 8,  2);
 339         clks[IMX6SL_CLK_CSI_PODF]          = imx_clk_divider("csi_podf",          "csi_sel",           base + 0x3c, 11, 3);
 340         clks[IMX6SL_CLK_LCDIF_AXI_PODF]    = imx_clk_divider("lcdif_axi_podf",    "lcdif_axi_sel",     base + 0x3c, 16, 3);
 341         clks[IMX6SL_CLK_USDHC1_PODF]       = imx_clk_divider("usdhc1_podf",       "usdhc1_sel",        base + 0x24, 11, 3);
 342         clks[IMX6SL_CLK_USDHC2_PODF]       = imx_clk_divider("usdhc2_podf",       "usdhc2_sel",        base + 0x24, 16, 3);
 343         clks[IMX6SL_CLK_USDHC3_PODF]       = imx_clk_divider("usdhc3_podf",       "usdhc3_sel",        base + 0x24, 19, 3);
 344         clks[IMX6SL_CLK_USDHC4_PODF]       = imx_clk_divider("usdhc4_podf",       "usdhc4_sel",        base + 0x24, 22, 3);
 345         clks[IMX6SL_CLK_SSI1_PRED]         = imx_clk_divider("ssi1_pred",         "ssi1_sel",          base + 0x28, 6,  3);
 346         clks[IMX6SL_CLK_SSI1_PODF]         = imx_clk_divider("ssi1_podf",         "ssi1_pred",         base + 0x28, 0,  6);
 347         clks[IMX6SL_CLK_SSI2_PRED]         = imx_clk_divider("ssi2_pred",         "ssi2_sel",          base + 0x2c, 6,  3);
 348         clks[IMX6SL_CLK_SSI2_PODF]         = imx_clk_divider("ssi2_podf",         "ssi2_pred",         base + 0x2c, 0,  6);
 349         clks[IMX6SL_CLK_SSI3_PRED]         = imx_clk_divider("ssi3_pred",         "ssi3_sel",          base + 0x28, 22, 3);
 350         clks[IMX6SL_CLK_SSI3_PODF]         = imx_clk_divider("ssi3_podf",         "ssi3_pred",         base + 0x28, 16, 6);
 351         clks[IMX6SL_CLK_PERCLK]            = imx_clk_fixup_divider("perclk",      "perclk_sel",        base + 0x1c, 0,  6, imx_cscmr1_fixup);
 352         clks[IMX6SL_CLK_PXP_AXI_PODF]      = imx_clk_divider("pxp_axi_podf",      "pxp_axi_sel",       base + 0x34, 3,  3);
 353         clks[IMX6SL_CLK_EPDC_AXI_PODF]     = imx_clk_divider("epdc_axi_podf",     "epdc_axi_sel",      base + 0x34, 12, 3);
 354         clks[IMX6SL_CLK_GPU2D_OVG_PODF]    = imx_clk_divider("gpu2d_ovg_podf",    "gpu2d_ovg_sel",     base + 0x18, 26, 3);
 355         clks[IMX6SL_CLK_GPU2D_PODF]        = imx_clk_divider("gpu2d_podf",        "gpu2d_sel",         base + 0x18, 29, 3);
 356         clks[IMX6SL_CLK_LCDIF_PIX_PRED]    = imx_clk_divider("lcdif_pix_pred",    "lcdif_pix_sel",     base + 0x38, 3,  3);
 357         clks[IMX6SL_CLK_EPDC_PIX_PRED]     = imx_clk_divider("epdc_pix_pred",     "epdc_pix_sel",      base + 0x38, 12, 3);
 358         clks[IMX6SL_CLK_LCDIF_PIX_PODF]    = imx_clk_fixup_divider("lcdif_pix_podf", "lcdif_pix_pred", base + 0x1c, 20, 3, imx_cscmr1_fixup);
 359         clks[IMX6SL_CLK_EPDC_PIX_PODF]     = imx_clk_divider("epdc_pix_podf",     "epdc_pix_pred",     base + 0x18, 23, 3);
 360         clks[IMX6SL_CLK_SPDIF0_PRED]       = imx_clk_divider("spdif0_pred",       "spdif0_sel",        base + 0x30, 25, 3);
 361         clks[IMX6SL_CLK_SPDIF0_PODF]       = imx_clk_divider("spdif0_podf",       "spdif0_pred",       base + 0x30, 22, 3);
 362         clks[IMX6SL_CLK_SPDIF1_PRED]       = imx_clk_divider("spdif1_pred",       "spdif1_sel",        base + 0x30, 12, 3);
 363         clks[IMX6SL_CLK_SPDIF1_PODF]       = imx_clk_divider("spdif1_podf",       "spdif1_pred",       base + 0x30, 9,  3);
 364         clks[IMX6SL_CLK_EXTERN_AUDIO_PRED] = imx_clk_divider("extern_audio_pred", "extern_audio_sel",  base + 0x28, 9,  3);
 365         clks[IMX6SL_CLK_EXTERN_AUDIO_PODF] = imx_clk_divider("extern_audio_podf", "extern_audio_pred", base + 0x28, 25, 3);
 366         clks[IMX6SL_CLK_ECSPI_ROOT]        = imx_clk_divider("ecspi_root",        "ecspi_sel",         base + 0x38, 19, 6);
 367         clks[IMX6SL_CLK_UART_ROOT]         = imx_clk_divider("uart_root",         "uart_sel",          base + 0x24, 0,  6);
 368
 369         /*                                                name         parent_name reg       shift width busy: reg, shift */
 370         clks[IMX6SL_CLK_AHB]       = imx_clk_busy_divider("ahb",       "periph",  base + 0x14, 10, 3,    base + 0x48, 1);
 371         clks[IMX6SL_CLK_MMDC_ROOT] = imx_clk_busy_divider("mmdc",      "periph2", base + 0x14, 3,  3,    base + 0x48, 2);
 372         clks[IMX6SL_CLK_ARM]       = imx_clk_busy_divider("arm",       "pll1_sw", base + 0x10, 0,  3,    base + 0x48, 16);
 373
 374         /*                                            name            parent_name          reg         shift */
 375         clks[IMX6SL_CLK_ECSPI1]       = imx_clk_gate2("ecspi1",       "ecspi_root",        base + 0x6c, 0);
 376         clks[IMX6SL_CLK_ECSPI2]       = imx_clk_gate2("ecspi2",       "ecspi_root",        base + 0x6c, 2);
 377         clks[IMX6SL_CLK_ECSPI3]       = imx_clk_gate2("ecspi3",       "ecspi_root",        base + 0x6c, 4);
 378         clks[IMX6SL_CLK_ECSPI4]       = imx_clk_gate2("ecspi4",       "ecspi_root",        base + 0x6c, 6);
 379         clks[IMX6SL_CLK_ENET]         = imx_clk_gate2("enet",         "ipg",               base + 0x6c, 10);
 380         clks[IMX6SL_CLK_EPIT1]        = imx_clk_gate2("epit1",        "perclk",            base + 0x6c, 12);
 381         clks[IMX6SL_CLK_EPIT2]        = imx_clk_gate2("epit2",        "perclk",            base + 0x6c, 14);
 382         clks[IMX6SL_CLK_EXTERN_AUDIO] = imx_clk_gate2("extern_audio", "extern_audio_podf", base + 0x6c, 16);
 383         clks[IMX6SL_CLK_GPT]          = imx_clk_gate2("gpt",          "perclk",            base + 0x6c, 20);
 384         clks[IMX6SL_CLK_GPT_SERIAL]   = imx_clk_gate2("gpt_serial",   "perclk",            base + 0x6c, 22);
 385         clks[IMX6SL_CLK_GPU2D_OVG]    = imx_clk_gate2("gpu2d_ovg",    "gpu2d_ovg_podf",    base + 0x6c, 26);
 386         clks[IMX6SL_CLK_I2C1]         = imx_clk_gate2("i2c1",         "perclk",            base + 0x70, 6);
 387         clks[IMX6SL_CLK_I2C2]         = imx_clk_gate2("i2c2",         "perclk",            base + 0x70, 8);
 388         clks[IMX6SL_CLK_I2C3]         = imx_clk_gate2("i2c3",         "perclk",            base + 0x70, 10);
 389         clks[IMX6SL_CLK_OCOTP]        = imx_clk_gate2("ocotp",        "ipg",               base + 0x70, 12);
 390         clks[IMX6SL_CLK_CSI]          = imx_clk_gate2("csi",          "csi_podf",          base + 0x74, 0);
 391         clks[IMX6SL_CLK_PXP_AXI]      = imx_clk_gate2("pxp_axi",      "pxp_axi_podf",      base + 0x74, 2);
 392         clks[IMX6SL_CLK_EPDC_AXI]     = imx_clk_gate2("epdc_axi",     "epdc_axi_podf",     base + 0x74, 4);
 393         clks[IMX6SL_CLK_LCDIF_AXI]    = imx_clk_gate2("lcdif_axi",    "lcdif_axi_podf",    base + 0x74, 6);
 394         clks[IMX6SL_CLK_LCDIF_PIX]    = imx_clk_gate2("lcdif_pix",    "lcdif_pix_podf",    base + 0x74, 8);
 395         clks[IMX6SL_CLK_EPDC_PIX]     = imx_clk_gate2("epdc_pix",     "epdc_pix_podf",     base + 0x74, 10);
 396         clks[IMX6SL_CLK_OCRAM]        = imx_clk_gate2("ocram",        "ocram_podf",        base + 0x74, 28);
 397         clks[IMX6SL_CLK_PWM1]         = imx_clk_gate2("pwm1",         "perclk",            base + 0x78, 16);
 398         clks[IMX6SL_CLK_PWM2]         = imx_clk_gate2("pwm2",         "perclk",            base + 0x78, 18);
 399         clks[IMX6SL_CLK_PWM3]         = imx_clk_gate2("pwm3",         "perclk",            base + 0x78, 20);
 400         clks[IMX6SL_CLK_PWM4]         = imx_clk_gate2("pwm4",         "perclk",            base + 0x78, 22);
 401         clks[IMX6SL_CLK_SDMA]         = imx_clk_gate2("sdma",         "ipg",               base + 0x7c, 6);
 402         clks[IMX6SL_CLK_SPBA]         = imx_clk_gate2("spba",         "ipg",               base + 0x7c, 12);
 403         clks[IMX6SL_CLK_SPDIF]        = imx_clk_gate2_shared("spdif",     "spdif0_podf",   base + 0x7c, 14, &share_count_spdif);
 404         clks[IMX6SL_CLK_SPDIF_GCLK]   = imx_clk_gate2_shared("spdif_gclk",  "ipg",         base + 0x7c, 14, &share_count_spdif);
 405         clks[IMX6SL_CLK_SSI1_IPG]     = imx_clk_gate2_shared("ssi1_ipg",     "ipg",        base + 0x7c, 18, &share_count_ssi1);
 406         clks[IMX6SL_CLK_SSI2_IPG]     = imx_clk_gate2_shared("ssi2_ipg",     "ipg",        base + 0x7c, 20, &share_count_ssi2);
 407         clks[IMX6SL_CLK_SSI3_IPG]     = imx_clk_gate2_shared("ssi3_ipg",     "ipg",        base + 0x7c, 22, &share_count_ssi3);
 408         clks[IMX6SL_CLK_SSI1]         = imx_clk_gate2_shared("ssi1",         "ssi1_podf",  base + 0x7c, 18, &share_count_ssi1);
 409         clks[IMX6SL_CLK_SSI2]         = imx_clk_gate2_shared("ssi2",         "ssi2_podf",  base + 0x7c, 20, &share_count_ssi2);
 410         clks[IMX6SL_CLK_SSI3]         = imx_clk_gate2_shared("ssi3",         "ssi3_podf",  base + 0x7c, 22, &share_count_ssi3);
 411         clks[IMX6SL_CLK_UART]         = imx_clk_gate2("uart",         "ipg",               base + 0x7c, 24);
 412         clks[IMX6SL_CLK_UART_SERIAL]  = imx_clk_gate2("uart_serial",  "uart_root",         base + 0x7c, 26);
 413         clks[IMX6SL_CLK_USBOH3]       = imx_clk_gate2("usboh3",       "ipg",               base + 0x80, 0);
 414         clks[IMX6SL_CLK_USDHC1]       = imx_clk_gate2("usdhc1",       "usdhc1_podf",       base + 0x80, 2);
 415         clks[IMX6SL_CLK_USDHC2]       = imx_clk_gate2("usdhc2",       "usdhc2_podf",       base + 0x80, 4);
 416         clks[IMX6SL_CLK_USDHC3]       = imx_clk_gate2("usdhc3",       "usdhc3_podf",       base + 0x80, 6);
 417         clks[IMX6SL_CLK_USDHC4]       = imx_clk_gate2("usdhc4",       "usdhc4_podf",       base + 0x80, 8);
 418
 419         /* Ensure the MMDC CH0 handshake is bypassed */
 420         writel_relaxed(readl_relaxed(base + CCDR) |
 421                 BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);
 422
 423         imx_check_clocks(clks, ARRAY_SIZE(clks));
 424
 425         clk_data.clks = clks;
 426         clk_data.clk_num = ARRAY_SIZE(clks);
 427         of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
 428
 429         /* Ensure the AHB clk is at 132MHz. */
 430         ret = clk_set_rate(clks[IMX6SL_CLK_AHB], 132000000);
 431         if (ret)
 432                 pr_warn("%s: failed to set AHB clock rate %d!\n",
 433                         __func__, ret);
 434
 435         /*
 436          * Make sure those always on clocks are enabled to maintain the correct
 437          * usecount and enabling/disabling of parent PLLs.
 438          */
 439         for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
 440                 clk_prepare_enable(clks[clks_init_on[i]]);
 441
 442         if (IS_ENABLED(CONFIG_USB_MXS_PHY)) {
 443                 clk_prepare_enable(clks[IMX6SL_CLK_USBPHY1_GATE]);
 444                 clk_prepare_enable(clks[IMX6SL_CLK_USBPHY2_GATE]);
 445         }
 446
 447         /* Audio-related clocks configuration */
 448         clk_set_parent(clks[IMX6SL_CLK_SPDIF0_SEL], clks[IMX6SL_CLK_PLL3_PFD3]);
 449
 450         /* set PLL5 video as lcdif pix parent clock */
 451         clk_set_parent(clks[IMX6SL_CLK_LCDIF_PIX_SEL],
 452                         clks[IMX6SL_CLK_PLL5_VIDEO_DIV]);
 453
 454         clk_set_parent(clks[IMX6SL_CLK_LCDIF_AXI_SEL],
 455                        clks[IMX6SL_CLK_PLL2_PFD2]);
 456
 457         imx_register_uart_clocks(uart_clks);
 458 }
 459 CLK_OF_DECLARE(imx6sl, "fsl,imx6sl-ccm", imx6sl_clocks_init);