drivers/clk/hisilicon/clk-hi3620.c

   1 /*
   2  * Hisilicon Hi3620 clock driver
   3  *
   4  * Copyright (c) 2012-2013 Hisilicon Limited.
   5  * Copyright (c) 2012-2013 Linaro Limited.
   6  *
   7  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
   8  *         Xin Li <li.xin@linaro.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  *
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/clk-provider.h>
  28 #include <linux/clkdev.h>
  29 #include <linux/io.h>
  30 #include <linux/of.h>
  31 #include <linux/of_address.h>
  32 #include <linux/of_device.h>
  33 #include <linux/slab.h>
  34 #include <linux/clk.h>
  35
  36 #include <dt-bindings/clock/hi3620-clock.h>
  37
  38 #include "clk.h"
  39
  40 /* clock parent list */
  41 static const char *timer0_mux_p[] __initdata = { "osc32k", "timerclk01", };
  42 static const char *timer1_mux_p[] __initdata = { "osc32k", "timerclk01", };
  43 static const char *timer2_mux_p[] __initdata = { "osc32k", "timerclk23", };
  44 static const char *timer3_mux_p[] __initdata = { "osc32k", "timerclk23", };
  45 static const char *timer4_mux_p[] __initdata = { "osc32k", "timerclk45", };
  46 static const char *timer5_mux_p[] __initdata = { "osc32k", "timerclk45", };
  47 static const char *timer6_mux_p[] __initdata = { "osc32k", "timerclk67", };
  48 static const char *timer7_mux_p[] __initdata = { "osc32k", "timerclk67", };
  49 static const char *timer8_mux_p[] __initdata = { "osc32k", "timerclk89", };
  50 static const char *timer9_mux_p[] __initdata = { "osc32k", "timerclk89", };
  51 static const char *uart0_mux_p[] __initdata = { "osc26m", "pclk", };
  52 static const char *uart1_mux_p[] __initdata = { "osc26m", "pclk", };
  53 static const char *uart2_mux_p[] __initdata = { "osc26m", "pclk", };
  54 static const char *uart3_mux_p[] __initdata = { "osc26m", "pclk", };
  55 static const char *uart4_mux_p[] __initdata = { "osc26m", "pclk", };
  56 static const char *spi0_mux_p[] __initdata = { "osc26m", "rclk_cfgaxi", };
  57 static const char *spi1_mux_p[] __initdata = { "osc26m", "rclk_cfgaxi", };
  58 static const char *spi2_mux_p[] __initdata = { "osc26m", "rclk_cfgaxi", };
  59 /* share axi parent */
  60 static const char *saxi_mux_p[] __initdata = { "armpll3", "armpll2", };
  61 static const char *pwm0_mux_p[] __initdata = { "osc32k", "osc26m", };
  62 static const char *pwm1_mux_p[] __initdata = { "osc32k", "osc26m", };
  63 static const char *sd_mux_p[] __initdata = { "armpll2", "armpll3", };
  64 static const char *mmc1_mux_p[] __initdata = { "armpll2", "armpll3", };
  65 static const char *mmc1_mux2_p[] __initdata = { "osc26m", "mmc1_div", };
  66 static const char *g2d_mux_p[] __initdata = { "armpll2", "armpll3", };
  67 static const char *venc_mux_p[] __initdata = { "armpll2", "armpll3", };
  68 static const char *vdec_mux_p[] __initdata = { "armpll2", "armpll3", };
  69 static const char *vpp_mux_p[] __initdata = { "armpll2", "armpll3", };
  70 static const char *edc0_mux_p[] __initdata = { "armpll2", "armpll3", };
  71 static const char *ldi0_mux_p[] __initdata = { "armpll2", "armpll4",
  72                                              "armpll3", "armpll5", };
  73 static const char *edc1_mux_p[] __initdata = { "armpll2", "armpll3", };
  74 static const char *ldi1_mux_p[] __initdata = { "armpll2", "armpll4",
  75                                              "armpll3", "armpll5", };
  76 static const char *rclk_hsic_p[] __initdata = { "armpll3", "armpll2", };
  77 static const char *mmc2_mux_p[] __initdata = { "armpll2", "armpll3", };
  78 static const char *mmc3_mux_p[] __initdata = { "armpll2", "armpll3", };
  79
  80
  81 /* fixed rate clocks */
  82 static struct hisi_fixed_rate_clock hi3620_fixed_rate_clks[] __initdata = {
  83         { HI3620_OSC32K,   "osc32k",   NULL, CLK_IS_ROOT, 32768, },
  84         { HI3620_OSC26M,   "osc26m",   NULL, CLK_IS_ROOT, 26000000, },
  85         { HI3620_PCLK,     "pclk",     NULL, CLK_IS_ROOT, 26000000, },
  86         { HI3620_PLL_ARM0, "armpll0",  NULL, CLK_IS_ROOT, 1600000000, },
  87         { HI3620_PLL_ARM1, "armpll1",  NULL, CLK_IS_ROOT, 1600000000, },
  88         { HI3620_PLL_PERI, "armpll2",  NULL, CLK_IS_ROOT, 1440000000, },
  89         { HI3620_PLL_USB,  "armpll3",  NULL, CLK_IS_ROOT, 1440000000, },
  90         { HI3620_PLL_HDMI, "armpll4",  NULL, CLK_IS_ROOT, 1188000000, },
  91         { HI3620_PLL_GPU,  "armpll5",  NULL, CLK_IS_ROOT, 1300000000, },
  92 };
  93
  94 /* fixed factor clocks */
  95 static struct hisi_fixed_factor_clock hi3620_fixed_factor_clks[] __initdata = {
  96         { HI3620_RCLK_TCXO,   "rclk_tcxo",   "osc26m",   1, 4,  0, },
  97         { HI3620_RCLK_CFGAXI, "rclk_cfgaxi", "armpll2",  1, 30, 0, },
  98         { HI3620_RCLK_PICO,   "rclk_pico",   "hsic_div", 1, 40, 0, },
  99 };
 100
 101 static struct hisi_mux_clock hi3620_mux_clks[] __initdata = {
 102         { HI3620_TIMER0_MUX, "timer0_mux", timer0_mux_p, ARRAY_SIZE(timer0_mux_p), CLK_SET_RATE_PARENT, 0,     15, 2, 0,                   },
 103         { HI3620_TIMER1_MUX, "timer1_mux", timer1_mux_p, ARRAY_SIZE(timer1_mux_p), CLK_SET_RATE_PARENT, 0,     17, 2, 0,                   },
 104         { HI3620_TIMER2_MUX, "timer2_mux", timer2_mux_p, ARRAY_SIZE(timer2_mux_p), CLK_SET_RATE_PARENT, 0,     19, 2, 0,                   },
 105         { HI3620_TIMER3_MUX, "timer3_mux", timer3_mux_p, ARRAY_SIZE(timer3_mux_p), CLK_SET_RATE_PARENT, 0,     21, 2, 0,                   },
 106         { HI3620_TIMER4_MUX, "timer4_mux", timer4_mux_p, ARRAY_SIZE(timer4_mux_p), CLK_SET_RATE_PARENT, 0x18,  0,  2, 0,                   },
 107         { HI3620_TIMER5_MUX, "timer5_mux", timer5_mux_p, ARRAY_SIZE(timer5_mux_p), CLK_SET_RATE_PARENT, 0x18,  2,  2, 0,                   },
 108         { HI3620_TIMER6_MUX, "timer6_mux", timer6_mux_p, ARRAY_SIZE(timer6_mux_p), CLK_SET_RATE_PARENT, 0x18,  4,  2, 0,                   },
 109         { HI3620_TIMER7_MUX, "timer7_mux", timer7_mux_p, ARRAY_SIZE(timer7_mux_p), CLK_SET_RATE_PARENT, 0x18,  6,  2, 0,                   },
 110         { HI3620_TIMER8_MUX, "timer8_mux", timer8_mux_p, ARRAY_SIZE(timer8_mux_p), CLK_SET_RATE_PARENT, 0x18,  8,  2, 0,                   },
 111         { HI3620_TIMER9_MUX, "timer9_mux", timer9_mux_p, ARRAY_SIZE(timer9_mux_p), CLK_SET_RATE_PARENT, 0x18,  10, 2, 0,                   },
 112         { HI3620_UART0_MUX,  "uart0_mux",  uart0_mux_p,  ARRAY_SIZE(uart0_mux_p),  CLK_SET_RATE_PARENT, 0x100, 7,  1, CLK_MUX_HIWORD_MASK, },
 113         { HI3620_UART1_MUX,  "uart1_mux",  uart1_mux_p,  ARRAY_SIZE(uart1_mux_p),  CLK_SET_RATE_PARENT, 0x100, 8,  1, CLK_MUX_HIWORD_MASK, },
 114         { HI3620_UART2_MUX,  "uart2_mux",  uart2_mux_p,  ARRAY_SIZE(uart2_mux_p),  CLK_SET_RATE_PARENT, 0x100, 9,  1, CLK_MUX_HIWORD_MASK, },
 115         { HI3620_UART3_MUX,  "uart3_mux",  uart3_mux_p,  ARRAY_SIZE(uart3_mux_p),  CLK_SET_RATE_PARENT, 0x100, 10, 1, CLK_MUX_HIWORD_MASK, },
 116         { HI3620_UART4_MUX,  "uart4_mux",  uart4_mux_p,  ARRAY_SIZE(uart4_mux_p),  CLK_SET_RATE_PARENT, 0x100, 11, 1, CLK_MUX_HIWORD_MASK, },
 117         { HI3620_SPI0_MUX,   "spi0_mux",   spi0_mux_p,   ARRAY_SIZE(spi0_mux_p),   CLK_SET_RATE_PARENT, 0x100, 12, 1, CLK_MUX_HIWORD_MASK, },
 118         { HI3620_SPI1_MUX,   "spi1_mux",   spi1_mux_p,   ARRAY_SIZE(spi1_mux_p),   CLK_SET_RATE_PARENT, 0x100, 13, 1, CLK_MUX_HIWORD_MASK, },
 119         { HI3620_SPI2_MUX,   "spi2_mux",   spi2_mux_p,   ARRAY_SIZE(spi2_mux_p),   CLK_SET_RATE_PARENT, 0x100, 14, 1, CLK_MUX_HIWORD_MASK, },
 120         { HI3620_SAXI_MUX,   "saxi_mux",   saxi_mux_p,   ARRAY_SIZE(saxi_mux_p),   CLK_SET_RATE_PARENT, 0x100, 15, 1, CLK_MUX_HIWORD_MASK, },
 121         { HI3620_PWM0_MUX,   "pwm0_mux",   pwm0_mux_p,   ARRAY_SIZE(pwm0_mux_p),   CLK_SET_RATE_PARENT, 0x104, 10, 1, CLK_MUX_HIWORD_MASK, },
 122         { HI3620_PWM1_MUX,   "pwm1_mux",   pwm1_mux_p,   ARRAY_SIZE(pwm1_mux_p),   CLK_SET_RATE_PARENT, 0x104, 11, 1, CLK_MUX_HIWORD_MASK, },
 123         { HI3620_SD_MUX,     "sd_mux",     sd_mux_p,     ARRAY_SIZE(sd_mux_p),     CLK_SET_RATE_PARENT, 0x108, 4,  1, CLK_MUX_HIWORD_MASK, },
 124         { HI3620_MMC1_MUX,   "mmc1_mux",   mmc1_mux_p,   ARRAY_SIZE(mmc1_mux_p),   CLK_SET_RATE_PARENT, 0x108, 9,  1, CLK_MUX_HIWORD_MASK, },
 125         { HI3620_MMC1_MUX2,  "mmc1_mux2",  mmc1_mux2_p,  ARRAY_SIZE(mmc1_mux2_p),  CLK_SET_RATE_PARENT, 0x108, 10, 1, CLK_MUX_HIWORD_MASK, },
 126         { HI3620_G2D_MUX,    "g2d_mux",    g2d_mux_p,    ARRAY_SIZE(g2d_mux_p),    CLK_SET_RATE_PARENT, 0x10c, 5,  1, CLK_MUX_HIWORD_MASK, },
 127         { HI3620_VENC_MUX,   "venc_mux",   venc_mux_p,   ARRAY_SIZE(venc_mux_p),   CLK_SET_RATE_PARENT, 0x10c, 11, 1, CLK_MUX_HIWORD_MASK, },
 128         { HI3620_VDEC_MUX,   "vdec_mux",   vdec_mux_p,   ARRAY_SIZE(vdec_mux_p),   CLK_SET_RATE_PARENT, 0x110, 5,  1, CLK_MUX_HIWORD_MASK, },
 129         { HI3620_VPP_MUX,    "vpp_mux",    vpp_mux_p,    ARRAY_SIZE(vpp_mux_p),    CLK_SET_RATE_PARENT, 0x110, 11, 1, CLK_MUX_HIWORD_MASK, },
 130         { HI3620_EDC0_MUX,   "edc0_mux",   edc0_mux_p,   ARRAY_SIZE(edc0_mux_p),   CLK_SET_RATE_PARENT, 0x114, 6,  1, CLK_MUX_HIWORD_MASK, },
 131         { HI3620_LDI0_MUX,   "ldi0_mux",   ldi0_mux_p,   ARRAY_SIZE(ldi0_mux_p),   CLK_SET_RATE_PARENT, 0x114, 13, 2, CLK_MUX_HIWORD_MASK, },
 132         { HI3620_EDC1_MUX,   "edc1_mux",   edc1_mux_p,   ARRAY_SIZE(edc1_mux_p),   CLK_SET_RATE_PARENT, 0x118, 6,  1, CLK_MUX_HIWORD_MASK, },
 133         { HI3620_LDI1_MUX,   "ldi1_mux",   ldi1_mux_p,   ARRAY_SIZE(ldi1_mux_p),   CLK_SET_RATE_PARENT, 0x118, 14, 2, CLK_MUX_HIWORD_MASK, },
 134         { HI3620_RCLK_HSIC,  "rclk_hsic",  rclk_hsic_p,  ARRAY_SIZE(rclk_hsic_p),  CLK_SET_RATE_PARENT, 0x130, 2,  1, CLK_MUX_HIWORD_MASK, },
 135         { HI3620_MMC2_MUX,   "mmc2_mux",   mmc2_mux_p,   ARRAY_SIZE(mmc2_mux_p),   CLK_SET_RATE_PARENT, 0x140, 4,  1, CLK_MUX_HIWORD_MASK, },
 136         { HI3620_MMC3_MUX,   "mmc3_mux",   mmc3_mux_p,   ARRAY_SIZE(mmc3_mux_p),   CLK_SET_RATE_PARENT, 0x140, 9,  1, CLK_MUX_HIWORD_MASK, },
 137 };
 138
 139 static struct hisi_divider_clock hi3620_div_clks[] __initdata = {
 140         { HI3620_SHAREAXI_DIV, "saxi_div",   "saxi_mux",  0, 0x100, 0, 5, CLK_DIVIDER_HIWORD_MASK, NULL, },
 141         { HI3620_CFGAXI_DIV,   "cfgaxi_div", "saxi_div",  0, 0x100, 5, 2, CLK_DIVIDER_HIWORD_MASK, NULL, },
 142         { HI3620_SD_DIV,       "sd_div",     "sd_mux",    0, 0x108, 0, 4, CLK_DIVIDER_HIWORD_MASK, NULL, },
 143         { HI3620_MMC1_DIV,     "mmc1_div",   "mmc1_mux",  0, 0x108, 5, 4, CLK_DIVIDER_HIWORD_MASK, NULL, },
 144         { HI3620_HSIC_DIV,     "hsic_div",   "rclk_hsic", 0, 0x130, 0, 2, CLK_DIVIDER_HIWORD_MASK, NULL, },
 145         { HI3620_MMC2_DIV,     "mmc2_div",   "mmc2_mux",  0, 0x140, 0, 4, CLK_DIVIDER_HIWORD_MASK, NULL, },
 146         { HI3620_MMC3_DIV,     "mmc3_div",   "mmc3_mux",  0, 0x140, 5, 4, CLK_DIVIDER_HIWORD_MASK, NULL, },
 147 };
 148
 149 static struct hisi_gate_clock hi3620_seperated_gate_clks[] __initdata = {
 150         { HI3620_TIMERCLK01,   "timerclk01",   "timer_rclk01", CLK_SET_RATE_PARENT, 0x20, 0, 0, },
 151         { HI3620_TIMER_RCLK01, "timer_rclk01", "rclk_tcxo",    CLK_SET_RATE_PARENT, 0x20, 1, 0, },
 152         { HI3620_TIMERCLK23,   "timerclk23",   "timer_rclk23", CLK_SET_RATE_PARENT, 0x20, 2, 0, },
 153         { HI3620_TIMER_RCLK23, "timer_rclk23", "rclk_tcxo",    CLK_SET_RATE_PARENT, 0x20, 3, 0, },
 154         { HI3620_RTCCLK,       "rtcclk",       "pclk",         CLK_SET_RATE_PARENT, 0x20, 5, 0, },
 155         { HI3620_KPC_CLK,      "kpc_clk",      "pclk",         CLK_SET_RATE_PARENT, 0x20, 6, 0, },
 156         { HI3620_GPIOCLK0,     "gpioclk0",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 8, 0, },
 157         { HI3620_GPIOCLK1,     "gpioclk1",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 9, 0, },
 158         { HI3620_GPIOCLK2,     "gpioclk2",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 10, 0, },
 159         { HI3620_GPIOCLK3,     "gpioclk3",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 11, 0, },
 160         { HI3620_GPIOCLK4,     "gpioclk4",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 12, 0, },
 161         { HI3620_GPIOCLK5,     "gpioclk5",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 13, 0, },
 162         { HI3620_GPIOCLK6,     "gpioclk6",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 14, 0, },
 163         { HI3620_GPIOCLK7,     "gpioclk7",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 15, 0, },
 164         { HI3620_GPIOCLK8,     "gpioclk8",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 16, 0, },
 165         { HI3620_GPIOCLK9,     "gpioclk9",     "pclk",         CLK_SET_RATE_PARENT, 0x20, 17, 0, },
 166         { HI3620_GPIOCLK10,    "gpioclk10",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 18, 0, },
 167         { HI3620_GPIOCLK11,    "gpioclk11",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 19, 0, },
 168         { HI3620_GPIOCLK12,    "gpioclk12",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 20, 0, },
 169         { HI3620_GPIOCLK13,    "gpioclk13",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 21, 0, },
 170         { HI3620_GPIOCLK14,    "gpioclk14",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 22, 0, },
 171         { HI3620_GPIOCLK15,    "gpioclk15",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 23, 0, },
 172         { HI3620_GPIOCLK16,    "gpioclk16",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 24, 0, },
 173         { HI3620_GPIOCLK17,    "gpioclk17",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 25, 0, },
 174         { HI3620_GPIOCLK18,    "gpioclk18",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 26, 0, },
 175         { HI3620_GPIOCLK19,    "gpioclk19",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 27, 0, },
 176         { HI3620_GPIOCLK20,    "gpioclk20",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 28, 0, },
 177         { HI3620_GPIOCLK21,    "gpioclk21",    "pclk",         CLK_SET_RATE_PARENT, 0x20, 29, 0, },
 178         { HI3620_DPHY0_CLK,    "dphy0_clk",    "osc26m",       CLK_SET_RATE_PARENT, 0x30, 15, 0, },
 179         { HI3620_DPHY1_CLK,    "dphy1_clk",    "osc26m",       CLK_SET_RATE_PARENT, 0x30, 16, 0, },
 180         { HI3620_DPHY2_CLK,    "dphy2_clk",    "osc26m",       CLK_SET_RATE_PARENT, 0x30, 17, 0, },
 181         { HI3620_USBPHY_CLK,   "usbphy_clk",   "rclk_pico",    CLK_SET_RATE_PARENT, 0x30, 24, 0, },
 182         { HI3620_ACP_CLK,      "acp_clk",      "rclk_cfgaxi",  CLK_SET_RATE_PARENT, 0x30, 28, 0, },
 183         { HI3620_TIMERCLK45,   "timerclk45",   "rclk_tcxo",    CLK_SET_RATE_PARENT, 0x40, 3, 0, },
 184         { HI3620_TIMERCLK67,   "timerclk67",   "rclk_tcxo",    CLK_SET_RATE_PARENT, 0x40, 4, 0, },
 185         { HI3620_TIMERCLK89,   "timerclk89",   "rclk_tcxo",    CLK_SET_RATE_PARENT, 0x40, 5, 0, },
 186         { HI3620_PWMCLK0,      "pwmclk0",      "pwm0_mux",     CLK_SET_RATE_PARENT, 0x40, 7, 0, },
 187         { HI3620_PWMCLK1,      "pwmclk1",      "pwm1_mux",     CLK_SET_RATE_PARENT, 0x40, 8, 0, },
 188         { HI3620_UARTCLK0,     "uartclk0",     "uart0_mux",    CLK_SET_RATE_PARENT, 0x40, 16, 0, },
 189         { HI3620_UARTCLK1,     "uartclk1",     "uart1_mux",    CLK_SET_RATE_PARENT, 0x40, 17, 0, },
 190         { HI3620_UARTCLK2,     "uartclk2",     "uart2_mux",    CLK_SET_RATE_PARENT, 0x40, 18, 0, },
 191         { HI3620_UARTCLK3,     "uartclk3",     "uart3_mux",    CLK_SET_RATE_PARENT, 0x40, 19, 0, },
 192         { HI3620_UARTCLK4,     "uartclk4",     "uart4_mux",    CLK_SET_RATE_PARENT, 0x40, 20, 0, },
 193         { HI3620_SPICLK0,      "spiclk0",      "spi0_mux",     CLK_SET_RATE_PARENT, 0x40, 21, 0, },
 194         { HI3620_SPICLK1,      "spiclk1",      "spi1_mux",     CLK_SET_RATE_PARENT, 0x40, 22, 0, },
 195         { HI3620_SPICLK2,      "spiclk2",      "spi2_mux",     CLK_SET_RATE_PARENT, 0x40, 23, 0, },
 196         { HI3620_I2CCLK0,      "i2cclk0",      "pclk",         CLK_SET_RATE_PARENT, 0x40, 24, 0, },
 197         { HI3620_I2CCLK1,      "i2cclk1",      "pclk",         CLK_SET_RATE_PARENT, 0x40, 25, 0, },
 198         { HI3620_SCI_CLK,      "sci_clk",      "osc26m",       CLK_SET_RATE_PARENT, 0x40, 26, 0, },
 199         { HI3620_I2CCLK2,      "i2cclk2",      "pclk",         CLK_SET_RATE_PARENT, 0x40, 28, 0, },
 200         { HI3620_I2CCLK3,      "i2cclk3",      "pclk",         CLK_SET_RATE_PARENT, 0x40, 29, 0, },
 201         { HI3620_DDRC_PER_CLK, "ddrc_per_clk", "rclk_cfgaxi",  CLK_SET_RATE_PARENT, 0x50, 9, 0, },
 202         { HI3620_DMAC_CLK,     "dmac_clk",     "rclk_cfgaxi",  CLK_SET_RATE_PARENT, 0x50, 10, 0, },
 203         { HI3620_USB2DVC_CLK,  "usb2dvc_clk",  "rclk_cfgaxi",  CLK_SET_RATE_PARENT, 0x50, 17, 0, },
 204         { HI3620_SD_CLK,       "sd_clk",       "sd_div",       CLK_SET_RATE_PARENT, 0x50, 20, 0, },
 205         { HI3620_MMC_CLK1,     "mmc_clk1",     "mmc1_mux2",    CLK_SET_RATE_PARENT, 0x50, 21, 0, },
 206         { HI3620_MMC_CLK2,     "mmc_clk2",     "mmc2_div",     CLK_SET_RATE_PARENT, 0x50, 22, 0, },
 207         { HI3620_MMC_CLK3,     "mmc_clk3",     "mmc3_div",     CLK_SET_RATE_PARENT, 0x50, 23, 0, },
 208         { HI3620_MCU_CLK,      "mcu_clk",      "acp_clk",      CLK_SET_RATE_PARENT, 0x50, 24, 0, },
 209 };
 210
 211 static void __init hi3620_clk_init(struct device_node *np)
 212 {
 213         void __iomem *base;
 214
 215         if (np) {
 216                 base = of_iomap(np, 0);
 217                 if (!base) {
 218                         pr_err("failed to map Hi3620 clock registers\n");
 219                         return;
 220                 }
 221         } else {
 222                 pr_err("failed to find Hi3620 clock node in DTS\n");
 223                 return;
 224         }
 225
 226         hisi_clk_init(np, HI3620_NR_CLKS);
 227
 228         hisi_clk_register_fixed_rate(hi3620_fixed_rate_clks,
 229                                      ARRAY_SIZE(hi3620_fixed_rate_clks),
 230                                      base);
 231         hisi_clk_register_fixed_factor(hi3620_fixed_factor_clks,
 232                                        ARRAY_SIZE(hi3620_fixed_factor_clks),
 233                                        base);
 234         hisi_clk_register_mux(hi3620_mux_clks, ARRAY_SIZE(hi3620_mux_clks),
 235                               base);
 236         hisi_clk_register_divider(hi3620_div_clks, ARRAY_SIZE(hi3620_div_clks),
 237                                   base);
 238         hisi_clk_register_gate_sep(hi3620_seperated_gate_clks,
 239                                    ARRAY_SIZE(hi3620_seperated_gate_clks),
 240                                    base);
 241 }
 242 CLK_OF_DECLARE(hi3620_clk, "hisilicon,hi3620-clock", hi3620_clk_init);
 243
 244 struct hisi_mmc_clock {
 245         unsigned int            id;
 246         const char              *name;
 247         const char              *parent_name;
 248         unsigned long           flags;
 249         u32                     clken_reg;
 250         u32                     clken_bit;
 251         u32                     div_reg;
 252         u32                     div_off;
 253         u32                     div_bits;
 254         u32                     drv_reg;
 255         u32                     drv_off;
 256         u32                     drv_bits;
 257         u32                     sam_reg;
 258         u32                     sam_off;
 259         u32                     sam_bits;
 260 };
 261
 262 struct clk_mmc {
 263         struct clk_hw   hw;
 264         u32             id;
 265         void __iomem    *clken_reg;
 266         u32             clken_bit;
 267         void __iomem    *div_reg;
 268         u32             div_off;
 269         u32             div_bits;
 270         void __iomem    *drv_reg;
 271         u32             drv_off;
 272         u32             drv_bits;
 273         void __iomem    *sam_reg;
 274         u32             sam_off;
 275         u32             sam_bits;
 276 };
 277
 278 #define to_mmc(_hw) container_of(_hw, struct clk_mmc, hw)
 279
 280 static struct hisi_mmc_clock hi3620_mmc_clks[] __initdata = {
 281         { HI3620_SD_CIUCLK,     "sd_bclk1", "sd_clk", CLK_SET_RATE_PARENT, 0x1f8, 0, 0x1f8, 1, 3, 0x1f8, 4, 4, 0x1f8, 8, 4},
 282         { HI3620_MMC_CIUCLK1,   "mmc_bclk1", "mmc_clk1", CLK_SET_RATE_PARENT, 0x1f8, 12, 0x1f8, 13, 3, 0x1f8, 16, 4, 0x1f8, 20, 4},
 283         { HI3620_MMC_CIUCLK2,   "mmc_bclk2", "mmc_clk2", CLK_SET_RATE_PARENT, 0x1f8, 24, 0x1f8, 25, 3, 0x1f8, 28, 4, 0x1fc, 0, 4},
 284         { HI3620_MMC_CIUCLK3,   "mmc_bclk3", "mmc_clk3", CLK_SET_RATE_PARENT, 0x1fc, 4, 0x1fc, 5, 3, 0x1fc, 8, 4, 0x1fc, 12, 4},
 285 };
 286
 287 static unsigned long mmc_clk_recalc_rate(struct clk_hw *hw,
 288                        unsigned long parent_rate)
 289 {
 290         switch (parent_rate) {
 291         case 26000000:
 292                 return 13000000;
 293         case 180000000:
 294                 return 25000000;
 295         case 360000000:
 296                 return 50000000;
 297         case 720000000:
 298                 return 100000000;
 299         case 1440000000:
 300                 return 180000000;
 301         default:
 302                 return parent_rate;
 303         }
 304 }
 305
 306 static long mmc_clk_determine_rate(struct clk_hw *hw, unsigned long rate,
 307                               unsigned long *best_parent_rate,
 308                               struct clk **best_parent_p)
 309 {
 310         struct clk_mmc *mclk = to_mmc(hw);
 311         unsigned long best = 0;
 312
 313         if ((rate <= 13000000) && (mclk->id == HI3620_MMC_CIUCLK1)) {
 314                 rate = 13000000;
 315                 best = 26000000;
 316         } else if (rate <= 26000000) {
 317                 rate = 25000000;
 318                 best = 180000000;
 319         } else if (rate <= 52000000) {
 320                 rate = 50000000;
 321                 best = 360000000;
 322         } else if (rate <= 100000000) {
 323                 rate = 100000000;
 324                 best = 720000000;
 325         } else {
 326                 /* max is 180M */
 327                 rate = 180000000;
 328                 best = 1440000000;
 329         }
 330         *best_parent_rate = best;
 331         return rate;
 332 }
 333
 334 static u32 mmc_clk_delay(u32 val, u32 para, u32 off, u32 len)
 335 {
 336         u32 i;
 337
 338         if (para >= 0) {
 339                 for (i = 0; i < len; i++) {
 340                         if (para % 2)
 341                                 val |= 1 << (off + i);
 342                         else
 343                                 val &= ~(1 << (off + i));
 344                         para = para >> 1;
 345                 }
 346         }
 347         return val;
 348 }
 349
 350 static int mmc_clk_set_timing(struct clk_hw *hw, unsigned long rate)
 351 {
 352         struct clk_mmc *mclk = to_mmc(hw);
 353         unsigned long flags;
 354         u32 sam, drv, div, val;
 355         static DEFINE_SPINLOCK(mmc_clk_lock);
 356
 357         switch (rate) {
 358         case 13000000:
 359                 sam = 3;
 360                 drv = 1;
 361                 div = 1;
 362                 break;
 363         case 25000000:
 364                 sam = 13;
 365                 drv = 6;
 366                 div = 6;
 367                 break;
 368         case 50000000:
 369                 sam = 3;
 370                 drv = 6;
 371                 div = 6;
 372                 break;
 373         case 100000000:
 374                 sam = 6;
 375                 drv = 4;
 376                 div = 6;
 377                 break;
 378         case 180000000:
 379                 sam = 6;
 380                 drv = 4;
 381                 div = 7;
 382                 break;
 383         default:
 384                 return -EINVAL;
 385         }
 386
 387         spin_lock_irqsave(&mmc_clk_lock, flags);
 388
 389         val = readl_relaxed(mclk->clken_reg);
 390         val &= ~(1 << mclk->clken_bit);
 391         writel_relaxed(val, mclk->clken_reg);
 392
 393         val = readl_relaxed(mclk->sam_reg);
 394         val = mmc_clk_delay(val, sam, mclk->sam_off, mclk->sam_bits);
 395         writel_relaxed(val, mclk->sam_reg);
 396
 397         val = readl_relaxed(mclk->drv_reg);
 398         val = mmc_clk_delay(val, drv, mclk->drv_off, mclk->drv_bits);
 399         writel_relaxed(val, mclk->drv_reg);
 400
 401         val = readl_relaxed(mclk->div_reg);
 402         val = mmc_clk_delay(val, div, mclk->div_off, mclk->div_bits);
 403         writel_relaxed(val, mclk->div_reg);
 404
 405         val = readl_relaxed(mclk->clken_reg);
 406         val |= 1 << mclk->clken_bit;
 407         writel_relaxed(val, mclk->clken_reg);
 408
 409         spin_unlock_irqrestore(&mmc_clk_lock, flags);
 410
 411         return 0;
 412 }
 413
 414 static int mmc_clk_prepare(struct clk_hw *hw)
 415 {
 416         struct clk_mmc *mclk = to_mmc(hw);
 417         unsigned long rate;
 418
 419         if (mclk->id == HI3620_MMC_CIUCLK1)
 420                 rate = 13000000;
 421         else
 422                 rate = 25000000;
 423
 424         return mmc_clk_set_timing(hw, rate);
 425 }
 426
 427 static int mmc_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 428                              unsigned long parent_rate)
 429 {
 430         return mmc_clk_set_timing(hw, rate);
 431 }
 432
 433 static struct clk_ops clk_mmc_ops = {
 434         .prepare = mmc_clk_prepare,
 435         .determine_rate = mmc_clk_determine_rate,
 436         .set_rate = mmc_clk_set_rate,
 437         .recalc_rate = mmc_clk_recalc_rate,
 438 };
 439
 440 static struct clk *hisi_register_clk_mmc(struct hisi_mmc_clock *mmc_clk,
 441                         void __iomem *base, struct device_node *np)
 442 {
 443         struct clk_mmc *mclk;
 444         struct clk *clk;
 445         struct clk_init_data init;
 446
 447         mclk = kzalloc(sizeof(*mclk), GFP_KERNEL);
 448         if (!mclk) {
 449                 pr_err("%s: fail to allocate mmc clk\n", __func__);
 450                 return ERR_PTR(-ENOMEM);
 451         }
 452
 453         init.name = mmc_clk->name;
 454         init.ops = &clk_mmc_ops;
 455         init.flags = mmc_clk->flags | CLK_IS_BASIC;
 456         init.parent_names = (mmc_clk->parent_name ? &mmc_clk->parent_name : NULL);
 457         init.num_parents = (mmc_clk->parent_name ? 1 : 0);
 458         mclk->hw.init = &init;
 459
 460         mclk->id = mmc_clk->id;
 461         mclk->clken_reg = base + mmc_clk->clken_reg;
 462         mclk->clken_bit = mmc_clk->clken_bit;
 463         mclk->div_reg = base + mmc_clk->div_reg;
 464         mclk->div_off = mmc_clk->div_off;
 465         mclk->div_bits = mmc_clk->div_bits;
 466         mclk->drv_reg = base + mmc_clk->drv_reg;
 467         mclk->drv_off = mmc_clk->drv_off;
 468         mclk->drv_bits = mmc_clk->drv_bits;
 469         mclk->sam_reg = base + mmc_clk->sam_reg;
 470         mclk->sam_off = mmc_clk->sam_off;
 471         mclk->sam_bits = mmc_clk->sam_bits;
 472
 473         clk = clk_register(NULL, &mclk->hw);
 474         if (WARN_ON(IS_ERR(clk)))
 475                 kfree(mclk);
 476         return clk;
 477 }
 478
 479 static void __init hi3620_mmc_clk_init(struct device_node *node)
 480 {
 481         void __iomem *base;
 482         int i, num = ARRAY_SIZE(hi3620_mmc_clks);
 483         struct clk_onecell_data *clk_data;
 484
 485         if (!node) {
 486                 pr_err("failed to find pctrl node in DTS\n");
 487                 return;
 488         }
 489
 490         base = of_iomap(node, 0);
 491         if (!base) {
 492                 pr_err("failed to map pctrl\n");
 493                 return;
 494         }
 495
 496         clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
 497         if (WARN_ON(!clk_data))
 498                 return;
 499
 500         clk_data->clks = kzalloc(sizeof(struct clk *) * num, GFP_KERNEL);
 501         if (!clk_data->clks) {
 502                 pr_err("%s: fail to allocate mmc clk\n", __func__);
 503                 return;
 504         }
 505
 506         for (i = 0; i < num; i++) {
 507                 struct hisi_mmc_clock *mmc_clk = &hi3620_mmc_clks[i];
 508                 clk_data->clks[mmc_clk->id] =
 509                         hisi_register_clk_mmc(mmc_clk, base, node);
 510         }
 511
 512         clk_data->clk_num = num;
 513         of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 514 }
 515
 516 CLK_OF_DECLARE(hi3620_mmc_clk, "hisilicon,hi3620-mmc-clock", hi3620_mmc_clk_init);