Quelle  clk-imx6sl.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2013-2014 Freescale Semiconductor, Inc.
 */

#include <linux/bits.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk/imx.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <dt-bindings/clock/imx6sl-clock.h>

#include "clk.h"

#define CCSR   0xc
#define BM_CCSR_PLL1_SW_CLK_SEL BIT(2)
#define CACRR   0x10
#define CDHIPR   0x48
#define BM_CDHIPR_ARM_PODF_BUSY BIT(16)
#define ARM_WAIT_DIV_396M 2
#define ARM_WAIT_DIV_792M 4
#define ARM_WAIT_DIV_996M 6

#define PLL_ARM   0x0
#define BM_PLL_ARM_DIV_SELECT 0x7f
#define BM_PLL_ARM_POWERDOWN BIT(12)
#define BM_PLL_ARM_ENABLE BIT(13)
#define BM_PLL_ARM_LOCK  BIT(31)
#define PLL_ARM_DIV_792M 66

static const char *step_sels[]  = { "osc", "pll2_pfd2", };
static const char *pll1_sw_sels[] = { "pll1_sys", "step", };
static const char *ocram_alt_sels[] = { "pll2_pfd2", "pll3_pfd1", };
static const char *ocram_sels[]  = { "periph", "ocram_alt_sels", };
static const char *pre_periph_sels[] = { "pll2_bus", "pll2_pfd2", "pll2_pfd0", "pll2_198m", };
static const char *periph_clk2_sels[] = { "pll3_usb_otg", "osc", "osc", "dummy", };
static const char *periph2_clk2_sels[] = { "pll3_usb_otg", "pll2_bus", };
static const char *periph_sels[] = { "pre_periph_sel", "periph_clk2_podf", };
static const char *periph2_sels[] = { "pre_periph2_sel", "periph2_clk2_podf", };
static const char *csi_sels[]  = { "osc", "pll2_pfd2", "pll3_120m", "pll3_pfd1", };
static const char *lcdif_axi_sels[] = { "pll2_bus", "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", };
static const char *usdhc_sels[]  = { "pll2_pfd2", "pll2_pfd0", };
static const char *ssi_sels[]  = { "pll3_pfd2", "pll3_pfd3", "pll4_audio_div", "dummy", };
static const char *perclk_sels[] = { "ipg", "osc", };
static const char *pxp_axi_sels[] = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd3", };
static const char *epdc_axi_sels[] = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd2", };
static const char *gpu2d_ovg_sels[] = { "pll3_pfd1", "pll3_usb_otg", "pll2_bus", "pll2_pfd2", };
static const char *gpu2d_sels[]  = { "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", "pll2_bus", };
static const char *lcdif_pix_sels[] = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll3_pfd0", "pll3_pfd1", };
static const char *epdc_pix_sels[] = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd1", "pll3_pfd1", };
static const char *audio_sels[]  = { "pll4_audio_div", "pll3_pfd2", "pll3_pfd3", "pll3_usb_otg", };
static const char *ecspi_sels[]  = { "pll3_60m", "osc", };
static const char *uart_sels[]  = { "pll3_80m", "osc", };
static const char *lvds_sels[]  = {
 "pll1_sys", "pll2_bus", "pll2_pfd0", "pll2_pfd1", "pll2_pfd2", "dummy", "pll4_audio", "pll5_video",
 "dummy", "enet_ref", "dummy", "dummy", "pll3_usb_otg", "pll7_usb_host", "pll3_pfd0", "pll3_pfd1",
 "pll3_pfd2", "pll3_pfd3", "osc", "dummy", "dummy", "dummy", "dummy", "dummy",
  "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
};
static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", };
static const char *pll1_bypass_sels[] = { "pll1", "pll1_bypass_src", };
static const char *pll2_bypass_sels[] = { "pll2", "pll2_bypass_src", };
static const char *pll3_bypass_sels[] = { "pll3", "pll3_bypass_src", };
static const char *pll4_bypass_sels[] = { "pll4", "pll4_bypass_src", };
static const char *pll5_bypass_sels[] = { "pll5", "pll5_bypass_src", };
static const char *pll6_bypass_sels[] = { "pll6", "pll6_bypass_src", };
static const char *pll7_bypass_sels[] = { "pll7", "pll7_bypass_src", };

static const struct clk_div_table clk_enet_ref_table[] = {
 { .val = 0, .div = 20, },
 { .val = 1, .div = 10, },
 { .val = 2, .div = 5, },
 { .val = 3, .div = 4, },
 { }
};

static const struct clk_div_table post_div_table[] = {
 { .val = 2, .div = 1, },
 { .val = 1, .div = 2, },
 { .val = 0, .div = 4, },
 { }
};

static const struct clk_div_table video_div_table[] = {
 { .val = 0, .div = 1, },
 { .val = 1, .div = 2, },
 { .val = 2, .div = 1, },
 { .val = 3, .div = 4, },
 { }
};

static unsigned int share_count_ssi1;
static unsigned int share_count_ssi2;
static unsigned int share_count_ssi3;
static unsigned int share_count_spdif;

static struct clk_hw **hws;
static struct clk_hw_onecell_data *clk_hw_data;
static void __iomem *ccm_base;
static void __iomem *anatop_base;

/*
 * ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
 *           during WAIT mode entry process could cause cache memory
 *           corruption.
 *
 * Software workaround:
 *     To prevent this issue from occurring, software should ensure that the
 * ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
 * entering WAIT mode.
 *
 * This function will set the ARM clk to max value within the 12:5 limit.
 * As IPG clock is fixed at 66MHz(so ARM freq must not exceed 158.4MHz),
 * ARM freq are one of below setpoints: 396MHz, 792MHz and 996MHz, since
 * the clk APIs can NOT be called in idle thread(may cause kernel schedule
 * as there is sleep function in PLL wait function), so here we just slow
 * down ARM to below freq according to previous freq:
 *
 * run mode      wait mode
 * 396MHz   ->   132MHz;
 * 792MHz   ->   158.4MHz;
 * 996MHz   ->   142.3MHz;
 */
static int imx6sl_get_arm_divider_for_wait(void)
{
 if (readl_relaxed(ccm_base + CCSR) & BM_CCSR_PLL1_SW_CLK_SEL) {
  return ARM_WAIT_DIV_396M;
 } else {
  if ((readl_relaxed(anatop_base + PLL_ARM) &
   BM_PLL_ARM_DIV_SELECT) == PLL_ARM_DIV_792M)
   return ARM_WAIT_DIV_792M;
  else
   return ARM_WAIT_DIV_996M;
 }
}

static void imx6sl_enable_pll_arm(bool enable)
{
 static u32 saved_pll_arm;
 u32 val;

 if (enable) {
  saved_pll_arm = val = readl_relaxed(anatop_base + PLL_ARM);
  val |= BM_PLL_ARM_ENABLE;
  val &= ~BM_PLL_ARM_POWERDOWN;
  writel_relaxed(val, anatop_base + PLL_ARM);
  while (!(readl_relaxed(anatop_base + PLL_ARM) & BM_PLL_ARM_LOCK))
   ;
 } else {
   writel_relaxed(saved_pll_arm, anatop_base + PLL_ARM);
 }
}

void imx6sl_set_wait_clk(bool enter)
{
 static unsigned long saved_arm_div;
 int arm_div_for_wait = imx6sl_get_arm_divider_for_wait();

 /*
 * According to hardware design, arm podf change need
 * PLL1 clock enabled.
 */
 if (arm_div_for_wait == ARM_WAIT_DIV_396M)
  imx6sl_enable_pll_arm(true);

 if (enter) {
  saved_arm_div = readl_relaxed(ccm_base + CACRR);
  writel_relaxed(arm_div_for_wait, ccm_base + CACRR);
 } else {
  writel_relaxed(saved_arm_div, ccm_base + CACRR);
 }
 while (__raw_readl(ccm_base + CDHIPR) & BM_CDHIPR_ARM_PODF_BUSY)
  ;

 if (arm_div_for_wait == ARM_WAIT_DIV_396M)
  imx6sl_enable_pll_arm(false);
}

static void __init imx6sl_clocks_init(struct device_node *ccm_node)
{
 struct device_node *np;
 void __iomem *base;
 int ret;

 clk_hw_data = kzalloc(struct_size(clk_hw_data, hws,
       IMX6SL_CLK_END), GFP_KERNEL);
 if (WARN_ON(!clk_hw_data))
  return;

 clk_hw_data->num = IMX6SL_CLK_END;
 hws = clk_hw_data->hws;

 hws[IMX6SL_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0);
 hws[IMX6SL_CLK_CKIL] = imx_obtain_fixed_clock_hw("ckil", 0);
 hws[IMX6SL_CLK_OSC] = imx_obtain_fixed_clock_hw("osc", 0);
 /* Clock source from external clock via CLK1 PAD */
 hws[IMX6SL_CLK_ANACLK1] = imx_obtain_fixed_clock_hw("anaclk1", 0);

 np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
 base = of_iomap(np, 0);
 WARN_ON(!base);
 of_node_put(np);
 anatop_base = base;

 hws[IMX6SL_PLL1_BYPASS_SRC] = imx_clk_hw_mux("pll1_bypass_src", base + 0x00, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL2_BYPASS_SRC] = imx_clk_hw_mux("pll2_bypass_src", base + 0x30, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL3_BYPASS_SRC] = imx_clk_hw_mux("pll3_bypass_src", base + 0x10, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL4_BYPASS_SRC] = imx_clk_hw_mux("pll4_bypass_src", base + 0x70, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL5_BYPASS_SRC] = imx_clk_hw_mux("pll5_bypass_src", base + 0xa0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL6_BYPASS_SRC] = imx_clk_hw_mux("pll6_bypass_src", base + 0xe0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 hws[IMX6SL_PLL7_BYPASS_SRC] = imx_clk_hw_mux("pll7_bypass_src", base + 0x20, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));

 /*                                    type               name    parent_name        base         div_mask */
 hws[IMX6SL_CLK_PLL1] = imx_clk_hw_pllv3(IMX_PLLV3_SYS,     "pll1", "osc", base + 0x00, 0x7f);
 hws[IMX6SL_CLK_PLL2] = imx_clk_hw_pllv3(IMX_PLLV3_GENERIC, "pll2", "osc", base + 0x30, 0x1);
 hws[IMX6SL_CLK_PLL3] = imx_clk_hw_pllv3(IMX_PLLV3_USB,     "pll3", "osc", base + 0x10, 0x3);
 hws[IMX6SL_CLK_PLL4] = imx_clk_hw_pllv3(IMX_PLLV3_AV,      "pll4", "osc", base + 0x70, 0x7f);
 hws[IMX6SL_CLK_PLL5] = imx_clk_hw_pllv3(IMX_PLLV3_AV,      "pll5", "osc", base + 0xa0, 0x7f);
 hws[IMX6SL_CLK_PLL6] = imx_clk_hw_pllv3(IMX_PLLV3_ENET,    "pll6", "osc", base + 0xe0, 0x3);
 hws[IMX6SL_CLK_PLL7] = imx_clk_hw_pllv3(IMX_PLLV3_USB,     "pll7", "osc", base + 0x20, 0x3);

 hws[IMX6SL_PLL1_BYPASS] = imx_clk_hw_mux_flags("pll1_bypass", base + 0x00, 16, 1, pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL2_BYPASS] = imx_clk_hw_mux_flags("pll2_bypass", base + 0x30, 16, 1, pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL3_BYPASS] = imx_clk_hw_mux_flags("pll3_bypass", base + 0x10, 16, 1, pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL4_BYPASS] = imx_clk_hw_mux_flags("pll4_bypass", base + 0x70, 16, 1, pll4_bypass_sels, ARRAY_SIZE(pll4_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL5_BYPASS] = imx_clk_hw_mux_flags("pll5_bypass", base + 0xa0, 16, 1, pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL6_BYPASS] = imx_clk_hw_mux_flags("pll6_bypass", base + 0xe0, 16, 1, pll6_bypass_sels, ARRAY_SIZE(pll6_bypass_sels), CLK_SET_RATE_PARENT);
 hws[IMX6SL_PLL7_BYPASS] = imx_clk_hw_mux_flags("pll7_bypass", base + 0x20, 16, 1, pll7_bypass_sels, ARRAY_SIZE(pll7_bypass_sels), CLK_SET_RATE_PARENT);

 /* Do not bypass PLLs initially */
 clk_set_parent(hws[IMX6SL_PLL1_BYPASS]->clk, hws[IMX6SL_CLK_PLL1]->clk);
 clk_set_parent(hws[IMX6SL_PLL2_BYPASS]->clk, hws[IMX6SL_CLK_PLL2]->clk);
 clk_set_parent(hws[IMX6SL_PLL3_BYPASS]->clk, hws[IMX6SL_CLK_PLL3]->clk);
 clk_set_parent(hws[IMX6SL_PLL4_BYPASS]->clk, hws[IMX6SL_CLK_PLL4]->clk);
 clk_set_parent(hws[IMX6SL_PLL5_BYPASS]->clk, hws[IMX6SL_CLK_PLL5]->clk);
 clk_set_parent(hws[IMX6SL_PLL6_BYPASS]->clk, hws[IMX6SL_CLK_PLL6]->clk);
 clk_set_parent(hws[IMX6SL_PLL7_BYPASS]->clk, hws[IMX6SL_CLK_PLL7]->clk);

 hws[IMX6SL_CLK_PLL1_SYS]      = imx_clk_hw_gate("pll1_sys",      "pll1_bypass", base + 0x00, 13);
 hws[IMX6SL_CLK_PLL2_BUS]      = imx_clk_hw_gate("pll2_bus",      "pll2_bypass", base + 0x30, 13);
 hws[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_hw_gate("pll3_usb_otg",  "pll3_bypass", base + 0x10, 13);
 hws[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_hw_gate("pll4_audio",    "pll4_bypass", base + 0x70, 13);
 hws[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_hw_gate("pll5_video",    "pll5_bypass", base + 0xa0, 13);
 hws[IMX6SL_CLK_PLL6_ENET]     = imx_clk_hw_gate("pll6_enet",     "pll6_bypass", base + 0xe0, 13);
 hws[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_hw_gate("pll7_usb_host", "pll7_bypass", base + 0x20, 13);

 hws[IMX6SL_CLK_LVDS1_SEL] = imx_clk_hw_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
 hws[IMX6SL_CLK_LVDS1_OUT] = imx_clk_hw_gate_exclusive("lvds1_out", "lvds1_sel", base + 0x160, 10, BIT(12));
 hws[IMX6SL_CLK_LVDS1_IN] = imx_clk_hw_gate_exclusive("lvds1_in", "anaclk1", base + 0x160, 12, BIT(10));

 /*
 * usbphy1 and usbphy2 are implemented as dummy gates using reserve
 * bit 20.  They are used by phy driver to keep the refcount of
 * parent PLL correct. usbphy1_gate and usbphy2_gate only needs to be
 * turned on during boot, and software will not need to control it
 * anymore after that.
 */
 hws[IMX6SL_CLK_USBPHY1]      = imx_clk_hw_gate("usbphy1",      "pll3_usb_otg",  base + 0x10, 20);
 hws[IMX6SL_CLK_USBPHY2]      = imx_clk_hw_gate("usbphy2",      "pll7_usb_host", base + 0x20, 20);
 hws[IMX6SL_CLK_USBPHY1_GATE] = imx_clk_hw_gate("usbphy1_gate", "dummy",         base + 0x10, 6);
 hws[IMX6SL_CLK_USBPHY2_GATE] = imx_clk_hw_gate("usbphy2_gate", "dummy",         base + 0x20, 6);

 /*                                                           dev   name              parent_name      flags                reg        shift width div: flags, div_table lock */
 hws[IMX6SL_CLK_PLL4_POST_DIV]  = clk_hw_register_divider_table(NULL, "pll4_post_div",  "pll4_audio",    CLK_SET_RATE_PARENT, base + 0x70,  19, 2,   0, post_div_table, &imx_ccm_lock);
 hws[IMX6SL_CLK_PLL4_AUDIO_DIV] =       clk_hw_register_divider(NULL, "pll4_audio_div", "pll4_post_div", CLK_SET_RATE_PARENT, base + 0x170, 15, 1,   0, &imx_ccm_lock);
 hws[IMX6SL_CLK_PLL5_POST_DIV]  = clk_hw_register_divider_table(NULL, "pll5_post_div",  "pll5_video",    CLK_SET_RATE_PARENT, base + 0xa0,  19, 2,   0, post_div_table, &imx_ccm_lock);
 hws[IMX6SL_CLK_PLL5_VIDEO_DIV] = clk_hw_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);
 hws[IMX6SL_CLK_ENET_REF]       = clk_hw_register_divider_table(NULL, "enet_ref",       "pll6_enet",     0,                   base + 0xe0,  0,  2,   0, clk_enet_ref_table, &imx_ccm_lock);

 /*                                       name         parent_name     reg           idx */
 hws[IMX6SL_CLK_PLL2_PFD0] = imx_clk_hw_pfd("pll2_pfd0", "pll2_bus",     base + 0x100, 0);
 hws[IMX6SL_CLK_PLL2_PFD1] = imx_clk_hw_pfd("pll2_pfd1", "pll2_bus",     base + 0x100, 1);
 hws[IMX6SL_CLK_PLL2_PFD2] = imx_clk_hw_pfd("pll2_pfd2", "pll2_bus",     base + 0x100, 2);
 hws[IMX6SL_CLK_PLL3_PFD0] = imx_clk_hw_pfd("pll3_pfd0", "pll3_usb_otg", base + 0xf0,  0);
 hws[IMX6SL_CLK_PLL3_PFD1] = imx_clk_hw_pfd("pll3_pfd1", "pll3_usb_otg", base + 0xf0,  1);
 hws[IMX6SL_CLK_PLL3_PFD2] = imx_clk_hw_pfd("pll3_pfd2", "pll3_usb_otg", base + 0xf0,  2);
 hws[IMX6SL_CLK_PLL3_PFD3] = imx_clk_hw_pfd("pll3_pfd3", "pll3_usb_otg", base + 0xf0,  3);

 /*                                                name         parent_name     mult div */
 hws[IMX6SL_CLK_PLL2_198M] = imx_clk_hw_fixed_factor("pll2_198m", "pll2_pfd2",      1, 2);
 hws[IMX6SL_CLK_PLL3_120M] = imx_clk_hw_fixed_factor("pll3_120m", "pll3_usb_otg",   1, 4);
 hws[IMX6SL_CLK_PLL3_80M]  = imx_clk_hw_fixed_factor("pll3_80m",  "pll3_usb_otg",   1, 6);
 hws[IMX6SL_CLK_PLL3_60M]  = imx_clk_hw_fixed_factor("pll3_60m",  "pll3_usb_otg",   1, 8);

 np = ccm_node;
 base = of_iomap(np, 0);
 WARN_ON(!base);
 ccm_base = base;

 /*                                              name                reg       shift width parent_names     num_parents */
 hws[IMX6SL_CLK_STEP]             = imx_clk_hw_mux("step",             base + 0xc,  8,  1, step_sels,         ARRAY_SIZE(step_sels));
 hws[IMX6SL_CLK_PLL1_SW]          = imx_clk_hw_mux("pll1_sw",          base + 0xc,  2,  1, pll1_sw_sels,      ARRAY_SIZE(pll1_sw_sels));
 hws[IMX6SL_CLK_OCRAM_ALT_SEL]    = imx_clk_hw_mux("ocram_alt_sel",    base + 0x14, 7,  1, ocram_alt_sels,    ARRAY_SIZE(ocram_alt_sels));
 hws[IMX6SL_CLK_OCRAM_SEL]        = imx_clk_hw_mux("ocram_sel",        base + 0x14, 6,  1, ocram_sels,        ARRAY_SIZE(ocram_sels));
 hws[IMX6SL_CLK_PRE_PERIPH2_SEL]  = imx_clk_hw_mux("pre_periph2_sel",  base + 0x18, 21, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 hws[IMX6SL_CLK_PRE_PERIPH_SEL]   = imx_clk_hw_mux("pre_periph_sel",   base + 0x18, 18, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 hws[IMX6SL_CLK_PERIPH2_CLK2_SEL] = imx_clk_hw_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels));
 hws[IMX6SL_CLK_PERIPH_CLK2_SEL]  = imx_clk_hw_mux("periph_clk2_sel",  base + 0x18, 12, 2, periph_clk2_sels,  ARRAY_SIZE(periph_clk2_sels));
 hws[IMX6SL_CLK_CSI_SEL]          = imx_clk_hw_mux("csi_sel",          base + 0x3c, 9,  2, csi_sels,          ARRAY_SIZE(csi_sels));
 hws[IMX6SL_CLK_LCDIF_AXI_SEL]    = imx_clk_hw_mux("lcdif_axi_sel",    base + 0x3c, 14, 2, lcdif_axi_sels,    ARRAY_SIZE(lcdif_axi_sels));
 hws[IMX6SL_CLK_USDHC1_SEL]       = imx_clk_hw_fixup_mux("usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 hws[IMX6SL_CLK_USDHC2_SEL]       = imx_clk_hw_fixup_mux("usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 hws[IMX6SL_CLK_USDHC3_SEL]       = imx_clk_hw_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 hws[IMX6SL_CLK_USDHC4_SEL]       = imx_clk_hw_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 hws[IMX6SL_CLK_SSI1_SEL]         = imx_clk_hw_fixup_mux("ssi1_sel",   base + 0x1c, 10, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 hws[IMX6SL_CLK_SSI2_SEL]         = imx_clk_hw_fixup_mux("ssi2_sel",   base + 0x1c, 12, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 hws[IMX6SL_CLK_SSI3_SEL]         = imx_clk_hw_fixup_mux("ssi3_sel",   base + 0x1c, 14, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 hws[IMX6SL_CLK_PERCLK_SEL]       = imx_clk_hw_fixup_mux("perclk_sel", base + 0x1c, 6,  1, perclk_sels,       ARRAY_SIZE(perclk_sels), imx_cscmr1_fixup);
 hws[IMX6SL_CLK_PXP_AXI_SEL]      = imx_clk_hw_mux("pxp_axi_sel",      base + 0x34, 6,  3, pxp_axi_sels,      ARRAY_SIZE(pxp_axi_sels));
 hws[IMX6SL_CLK_EPDC_AXI_SEL]     = imx_clk_hw_mux("epdc_axi_sel",     base + 0x34, 15, 3, epdc_axi_sels,     ARRAY_SIZE(epdc_axi_sels));
 hws[IMX6SL_CLK_GPU2D_OVG_SEL]    = imx_clk_hw_mux("gpu2d_ovg_sel",    base + 0x18, 4,  2, gpu2d_ovg_sels,    ARRAY_SIZE(gpu2d_ovg_sels));
 hws[IMX6SL_CLK_GPU2D_SEL]        = imx_clk_hw_mux("gpu2d_sel",        base + 0x18, 8,  2, gpu2d_sels,        ARRAY_SIZE(gpu2d_sels));
 hws[IMX6SL_CLK_LCDIF_PIX_SEL]    = imx_clk_hw_mux("lcdif_pix_sel",    base + 0x38, 6,  3, lcdif_pix_sels,    ARRAY_SIZE(lcdif_pix_sels));
 hws[IMX6SL_CLK_EPDC_PIX_SEL]     = imx_clk_hw_mux("epdc_pix_sel",     base + 0x38, 15, 3, epdc_pix_sels,     ARRAY_SIZE(epdc_pix_sels));
 hws[IMX6SL_CLK_SPDIF0_SEL]       = imx_clk_hw_mux("spdif0_sel",       base + 0x30, 20, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 hws[IMX6SL_CLK_SPDIF1_SEL]       = imx_clk_hw_mux("spdif1_sel",       base + 0x30, 7,  2, audio_sels,        ARRAY_SIZE(audio_sels));
 hws[IMX6SL_CLK_EXTERN_AUDIO_SEL] = imx_clk_hw_mux("extern_audio_sel", base + 0x20, 19, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 hws[IMX6SL_CLK_ECSPI_SEL]        = imx_clk_hw_mux("ecspi_sel",        base + 0x38, 18, 1, ecspi_sels,        ARRAY_SIZE(ecspi_sels));
 hws[IMX6SL_CLK_UART_SEL]         = imx_clk_hw_mux("uart_sel",         base + 0x24, 6,  1, uart_sels,         ARRAY_SIZE(uart_sels));

 /*                                          name       reg        shift width busy: reg, shift parent_names  num_parents */
 hws[IMX6SL_CLK_PERIPH]  = imx_clk_hw_busy_mux("periph",  base + 0x14, 25,  1,   base + 0x48, 5,  periph_sels,  ARRAY_SIZE(periph_sels));
 hws[IMX6SL_CLK_PERIPH2] = imx_clk_hw_busy_mux("periph2", base + 0x14, 26,  1,   base + 0x48, 3,  periph2_sels, ARRAY_SIZE(periph2_sels));

 /*                                                   name                 parent_name          reg       shift width */
 hws[IMX6SL_CLK_OCRAM_PODF]        = imx_clk_hw_busy_divider("ocram_podf",   "ocram_sel",         base + 0x14, 16, 3, base + 0x48, 0);
 hws[IMX6SL_CLK_PERIPH_CLK2_PODF]  = imx_clk_hw_divider("periph_clk2_podf",  "periph_clk2_sel",   base + 0x14, 27, 3);
 hws[IMX6SL_CLK_PERIPH2_CLK2_PODF] = imx_clk_hw_divider("periph2_clk2_podf", "periph2_clk2_sel",  base + 0x14, 0,  3);
 hws[IMX6SL_CLK_IPG]               = imx_clk_hw_divider("ipg",               "ahb",               base + 0x14, 8,  2);
 hws[IMX6SL_CLK_CSI_PODF]          = imx_clk_hw_divider("csi_podf",          "csi_sel",           base + 0x3c, 11, 3);
 hws[IMX6SL_CLK_LCDIF_AXI_PODF]    = imx_clk_hw_divider("lcdif_axi_podf",    "lcdif_axi_sel",     base + 0x3c, 16, 3);
 hws[IMX6SL_CLK_USDHC1_PODF]       = imx_clk_hw_divider("usdhc1_podf",       "usdhc1_sel",        base + 0x24, 11, 3);
 hws[IMX6SL_CLK_USDHC2_PODF]       = imx_clk_hw_divider("usdhc2_podf",       "usdhc2_sel",        base + 0x24, 16, 3);
 hws[IMX6SL_CLK_USDHC3_PODF]       = imx_clk_hw_divider("usdhc3_podf",       "usdhc3_sel",        base + 0x24, 19, 3);
 hws[IMX6SL_CLK_USDHC4_PODF]       = imx_clk_hw_divider("usdhc4_podf",       "usdhc4_sel",        base + 0x24, 22, 3);
 hws[IMX6SL_CLK_SSI1_PRED]         = imx_clk_hw_divider("ssi1_pred",         "ssi1_sel",          base + 0x28, 6,  3);
 hws[IMX6SL_CLK_SSI1_PODF]         = imx_clk_hw_divider("ssi1_podf",         "ssi1_pred",         base + 0x28, 0,  6);
 hws[IMX6SL_CLK_SSI2_PRED]         = imx_clk_hw_divider("ssi2_pred",         "ssi2_sel",          base + 0x2c, 6,  3);
 hws[IMX6SL_CLK_SSI2_PODF]         = imx_clk_hw_divider("ssi2_podf",         "ssi2_pred",         base + 0x2c, 0,  6);
 hws[IMX6SL_CLK_SSI3_PRED]         = imx_clk_hw_divider("ssi3_pred",         "ssi3_sel",          base + 0x28, 22, 3);
 hws[IMX6SL_CLK_SSI3_PODF]         = imx_clk_hw_divider("ssi3_podf",         "ssi3_pred",         base + 0x28, 16, 6);
 hws[IMX6SL_CLK_PERCLK]            = imx_clk_hw_fixup_divider("perclk",      "perclk_sel",        base + 0x1c, 0,  6, imx_cscmr1_fixup);
 hws[IMX6SL_CLK_PXP_AXI_PODF]      = imx_clk_hw_divider("pxp_axi_podf",      "pxp_axi_sel",       base + 0x34, 3,  3);
 hws[IMX6SL_CLK_EPDC_AXI_PODF]     = imx_clk_hw_divider("epdc_axi_podf",     "epdc_axi_sel",      base + 0x34, 12, 3);
 hws[IMX6SL_CLK_GPU2D_OVG_PODF]    = imx_clk_hw_divider("gpu2d_ovg_podf",    "gpu2d_ovg_sel",     base + 0x18, 26, 3);
 hws[IMX6SL_CLK_GPU2D_PODF]        = imx_clk_hw_divider("gpu2d_podf",        "gpu2d_sel",         base + 0x18, 29, 3);
 hws[IMX6SL_CLK_LCDIF_PIX_PRED]    = imx_clk_hw_divider("lcdif_pix_pred",    "lcdif_pix_sel",     base + 0x38, 3,  3);
 hws[IMX6SL_CLK_EPDC_PIX_PRED]     = imx_clk_hw_divider("epdc_pix_pred",     "epdc_pix_sel",      base + 0x38, 12, 3);
 hws[IMX6SL_CLK_LCDIF_PIX_PODF]    = imx_clk_hw_fixup_divider("lcdif_pix_podf", "lcdif_pix_pred", base + 0x1c, 20, 3, imx_cscmr1_fixup);
 hws[IMX6SL_CLK_EPDC_PIX_PODF]     = imx_clk_hw_divider("epdc_pix_podf",     "epdc_pix_pred",     base + 0x18, 23, 3);
 hws[IMX6SL_CLK_SPDIF0_PRED]       = imx_clk_hw_divider("spdif0_pred",       "spdif0_sel",        base + 0x30, 25, 3);
 hws[IMX6SL_CLK_SPDIF0_PODF]       = imx_clk_hw_divider("spdif0_podf",       "spdif0_pred",       base + 0x30, 22, 3);
 hws[IMX6SL_CLK_SPDIF1_PRED]       = imx_clk_hw_divider("spdif1_pred",       "spdif1_sel",        base + 0x30, 12, 3);
 hws[IMX6SL_CLK_SPDIF1_PODF]       = imx_clk_hw_divider("spdif1_podf",       "spdif1_pred",       base + 0x30, 9,  3);
 hws[IMX6SL_CLK_EXTERN_AUDIO_PRED] = imx_clk_hw_divider("extern_audio_pred", "extern_audio_sel",  base + 0x28, 9,  3);
 hws[IMX6SL_CLK_EXTERN_AUDIO_PODF] = imx_clk_hw_divider("extern_audio_podf", "extern_audio_pred", base + 0x28, 25, 3);
 hws[IMX6SL_CLK_ECSPI_ROOT]        = imx_clk_hw_divider("ecspi_root",        "ecspi_sel",         base + 0x38, 19, 6);
 hws[IMX6SL_CLK_UART_ROOT]         = imx_clk_hw_divider("uart_root",         "uart_sel",          base + 0x24, 0,  6);

 /*                                                name         parent_name reg       shift width busy: reg, shift */
 hws[IMX6SL_CLK_AHB]       = imx_clk_hw_busy_divider("ahb",       "periph",  base + 0x14, 10, 3,    base + 0x48, 1);
 hws[IMX6SL_CLK_MMDC_ROOT] = imx_clk_hw_busy_divider("mmdc",      "periph2", base + 0x14, 3,  3,    base + 0x48, 2);
 hws[IMX6SL_CLK_ARM]       = imx_clk_hw_busy_divider("arm",       "pll1_sw", base + 0x10, 0,  3,    base + 0x48, 16);

 /*                                            name            parent_name          reg         shift */
 hws[IMX6SL_CLK_ECSPI1]       = imx_clk_hw_gate2("ecspi1",       "ecspi_root",        base + 0x6c, 0);
 hws[IMX6SL_CLK_ECSPI2]       = imx_clk_hw_gate2("ecspi2",       "ecspi_root",        base + 0x6c, 2);
 hws[IMX6SL_CLK_ECSPI3]       = imx_clk_hw_gate2("ecspi3",       "ecspi_root",        base + 0x6c, 4);
 hws[IMX6SL_CLK_ECSPI4]       = imx_clk_hw_gate2("ecspi4",       "ecspi_root",        base + 0x6c, 6);
 hws[IMX6SL_CLK_ENET]         = imx_clk_hw_gate2("enet",         "ipg",               base + 0x6c, 10);
 hws[IMX6SL_CLK_EPIT1]        = imx_clk_hw_gate2("epit1",        "perclk",            base + 0x6c, 12);
 hws[IMX6SL_CLK_EPIT2]        = imx_clk_hw_gate2("epit2",        "perclk",            base + 0x6c, 14);
 hws[IMX6SL_CLK_EXTERN_AUDIO] = imx_clk_hw_gate2("extern_audio", "extern_audio_podf", base + 0x6c, 16);
 hws[IMX6SL_CLK_GPT]          = imx_clk_hw_gate2("gpt",          "perclk",            base + 0x6c, 20);
 hws[IMX6SL_CLK_GPT_SERIAL]   = imx_clk_hw_gate2("gpt_serial",   "perclk",            base + 0x6c, 22);
 hws[IMX6SL_CLK_GPU2D_OVG]    = imx_clk_hw_gate2("gpu2d_ovg",    "gpu2d_ovg_podf",    base + 0x6c, 26);
 hws[IMX6SL_CLK_I2C1]         = imx_clk_hw_gate2("i2c1",         "perclk",            base + 0x70, 6);
 hws[IMX6SL_CLK_I2C2]         = imx_clk_hw_gate2("i2c2",         "perclk",            base + 0x70, 8);
 hws[IMX6SL_CLK_I2C3]         = imx_clk_hw_gate2("i2c3",         "perclk",            base + 0x70, 10);
 hws[IMX6SL_CLK_OCOTP]        = imx_clk_hw_gate2("ocotp",        "ipg",               base + 0x70, 12);
 hws[IMX6SL_CLK_CSI]          = imx_clk_hw_gate2("csi",          "csi_podf",          base + 0x74, 0);
 hws[IMX6SL_CLK_PXP_AXI]      = imx_clk_hw_gate2("pxp_axi",      "pxp_axi_podf",      base + 0x74, 2);
 hws[IMX6SL_CLK_EPDC_AXI]     = imx_clk_hw_gate2("epdc_axi",     "epdc_axi_podf",     base + 0x74, 4);
 hws[IMX6SL_CLK_LCDIF_AXI]    = imx_clk_hw_gate2("lcdif_axi",    "lcdif_axi_podf",    base + 0x74, 6);
 hws[IMX6SL_CLK_LCDIF_PIX]    = imx_clk_hw_gate2("lcdif_pix",    "lcdif_pix_podf",    base + 0x74, 8);
 hws[IMX6SL_CLK_EPDC_PIX]     = imx_clk_hw_gate2("epdc_pix",     "epdc_pix_podf",     base + 0x74, 10);
 hws[IMX6SL_CLK_MMDC_P0_IPG]  = imx_clk_hw_gate2_flags("mmdc_p0_ipg",  "ipg",         base + 0x74, 24, CLK_IS_CRITICAL);
 hws[IMX6SL_CLK_MMDC_P1_IPG]  = imx_clk_hw_gate2("mmdc_p1_ipg",  "ipg",               base + 0x74, 26);
 hws[IMX6SL_CLK_OCRAM]        = imx_clk_hw_gate2("ocram",        "ocram_podf",        base + 0x74, 28);
 hws[IMX6SL_CLK_PWM1]         = imx_clk_hw_gate2("pwm1",         "perclk",            base + 0x78, 16);
 hws[IMX6SL_CLK_PWM2]         = imx_clk_hw_gate2("pwm2",         "perclk",            base + 0x78, 18);
 hws[IMX6SL_CLK_PWM3]         = imx_clk_hw_gate2("pwm3",         "perclk",            base + 0x78, 20);
 hws[IMX6SL_CLK_PWM4]         = imx_clk_hw_gate2("pwm4",         "perclk",            base + 0x78, 22);
 hws[IMX6SL_CLK_SDMA]         = imx_clk_hw_gate2("sdma",         "ipg",               base + 0x7c, 6);
 hws[IMX6SL_CLK_SPBA]         = imx_clk_hw_gate2("spba",         "ipg",               base + 0x7c, 12);
 hws[IMX6SL_CLK_SPDIF]        = imx_clk_hw_gate2_shared("spdif",     "spdif0_podf",   base + 0x7c, 14, &share_count_spdif);
 hws[IMX6SL_CLK_SPDIF_GCLK]   = imx_clk_hw_gate2_shared("spdif_gclk",  "ipg",         base + 0x7c, 14, &share_count_spdif);
 hws[IMX6SL_CLK_SSI1_IPG]     = imx_clk_hw_gate2_shared("ssi1_ipg",     "ipg",        base + 0x7c, 18, &share_count_ssi1);
 hws[IMX6SL_CLK_SSI2_IPG]     = imx_clk_hw_gate2_shared("ssi2_ipg",     "ipg",        base + 0x7c, 20, &share_count_ssi2);
 hws[IMX6SL_CLK_SSI3_IPG]     = imx_clk_hw_gate2_shared("ssi3_ipg",     "ipg",        base + 0x7c, 22, &share_count_ssi3);
 hws[IMX6SL_CLK_SSI1]         = imx_clk_hw_gate2_shared("ssi1",         "ssi1_podf",  base + 0x7c, 18, &share_count_ssi1);
 hws[IMX6SL_CLK_SSI2]         = imx_clk_hw_gate2_shared("ssi2",         "ssi2_podf",  base + 0x7c, 20, &share_count_ssi2);
 hws[IMX6SL_CLK_SSI3]         = imx_clk_hw_gate2_shared("ssi3",         "ssi3_podf",  base + 0x7c, 22, &share_count_ssi3);
 hws[IMX6SL_CLK_UART]         = imx_clk_hw_gate2("uart",         "ipg",               base + 0x7c, 24);
 hws[IMX6SL_CLK_UART_SERIAL]  = imx_clk_hw_gate2("uart_serial",  "uart_root",         base + 0x7c, 26);
 hws[IMX6SL_CLK_USBOH3]       = imx_clk_hw_gate2("usboh3",       "ipg",               base + 0x80, 0);
 hws[IMX6SL_CLK_USDHC1]       = imx_clk_hw_gate2("usdhc1",       "usdhc1_podf",       base + 0x80, 2);
 hws[IMX6SL_CLK_USDHC2]       = imx_clk_hw_gate2("usdhc2",       "usdhc2_podf",       base + 0x80, 4);
 hws[IMX6SL_CLK_USDHC3]       = imx_clk_hw_gate2("usdhc3",       "usdhc3_podf",       base + 0x80, 6);
 hws[IMX6SL_CLK_USDHC4]       = imx_clk_hw_gate2("usdhc4",       "usdhc4_podf",       base + 0x80, 8);

 /* Ensure the MMDC CH0 handshake is bypassed */
 imx_mmdc_mask_handshake(base, 0);

 imx_check_clk_hws(hws, IMX6SL_CLK_END);

 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data);

 /* Ensure the AHB clk is at 132MHz. */
 ret = clk_set_rate(hws[IMX6SL_CLK_AHB]->clk, 132000000);
 if (ret)
  pr_warn("%s: failed to set AHB clock rate %d!\n",
   __func__, ret);

 if (IS_ENABLED(CONFIG_USB_MXS_PHY)) {
  clk_prepare_enable(hws[IMX6SL_CLK_USBPHY1_GATE]->clk);
  clk_prepare_enable(hws[IMX6SL_CLK_USBPHY2_GATE]->clk);
 }

 /* Audio-related clocks configuration */
 clk_set_parent(hws[IMX6SL_CLK_SPDIF0_SEL]->clk, hws[IMX6SL_CLK_PLL3_PFD3]->clk);

 /* set PLL5 video as lcdif pix parent clock */
 clk_set_parent(hws[IMX6SL_CLK_LCDIF_PIX_SEL]->clk,
   hws[IMX6SL_CLK_PLL5_VIDEO_DIV]->clk);

 clk_set_parent(hws[IMX6SL_CLK_LCDIF_AXI_SEL]->clk,
         hws[IMX6SL_CLK_PLL2_PFD2]->clk);

 imx_register_uart_clocks();
}
CLK_OF_DECLARE(imx6sl, "fsl,imx6sl-ccm", imx6sl_clocks_init);