1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * m5441x.c -- support for Coldfire m5441x processors 4 * 5 * (C) Copyright Steven King <sfking@fdwdc.com> 6 */ 7 8 #include <linux/clkdev.h> 9 #include <linux/kernel.h> 10 #include <linux/param.h> 11 #include <linux/init.h> 12 #include <linux/io.h> 13 #include <linux/clk.h> 14 #include <asm/machdep.h> 15 #include <asm/coldfire.h> 16 #include <asm/mcfsim.h> 17 #include <asm/mcfuart.h> 18 #include <asm/mcfdma.h> 19 #include <asm/mcfclk.h> 20 21 DEFINE_CLK(0, "flexbus", 2, MCF_CLK); 22 DEFINE_CLK(0, "flexcan.0", 8, MCF_CLK); 23 DEFINE_CLK(0, "flexcan.1", 9, MCF_CLK); 24 DEFINE_CLK(0, "imx1-i2c.1", 14, MCF_CLK); 25 DEFINE_CLK(0, "mcfdspi.1", 15, MCF_CLK); 26 DEFINE_CLK(0, "edma", 17, MCF_CLK); 27 DEFINE_CLK(0, "intc.0", 18, MCF_CLK); 28 DEFINE_CLK(0, "intc.1", 19, MCF_CLK); 29 DEFINE_CLK(0, "intc.2", 20, MCF_CLK); 30 DEFINE_CLK(0, "imx1-i2c.0", 22, MCF_CLK); 31 DEFINE_CLK(0, "fsl-dspi.0", 23, MCF_CLK); 32 DEFINE_CLK(0, "mcfuart.0", 24, MCF_BUSCLK); 33 DEFINE_CLK(0, "mcfuart.1", 25, MCF_BUSCLK); 34 DEFINE_CLK(0, "mcfuart.2", 26, MCF_BUSCLK); 35 DEFINE_CLK(0, "mcfuart.3", 27, MCF_BUSCLK); 36 DEFINE_CLK(0, "mcftmr.0", 28, MCF_CLK); 37 DEFINE_CLK(0, "mcftmr.1", 29, MCF_CLK); 38 DEFINE_CLK(0, "mcftmr.2", 30, MCF_CLK); 39 DEFINE_CLK(0, "mcftmr.3", 31, MCF_CLK); 40 DEFINE_CLK(0, "mcfpit.0", 32, MCF_CLK); 41 DEFINE_CLK(0, "mcfpit.1", 33, MCF_CLK); 42 DEFINE_CLK(0, "mcfpit.2", 34, MCF_CLK); 43 DEFINE_CLK(0, "mcfpit.3", 35, MCF_CLK); 44 DEFINE_CLK(0, "mcfeport.0", 37, MCF_CLK); 45 DEFINE_CLK(0, "mcfadc.0", 38, MCF_CLK); 46 DEFINE_CLK(0, "mcfdac.0", 39, MCF_CLK); 47 DEFINE_CLK(0, "mcfrtc.0", 42, MCF_CLK); 48 DEFINE_CLK(0, "mcfsim.0", 43, MCF_CLK); 49 DEFINE_CLK(0, "mcfusb-otg.0", 44, MCF_CLK); 50 DEFINE_CLK(0, "mcfusb-host.0", 45, MCF_CLK); 51 DEFINE_CLK(0, "mcfddr-sram.0", 46, MCF_CLK); 52 DEFINE_CLK(0, "mcfssi.0", 47, MCF_CLK); 53 DEFINE_CLK(0, "pll.0", 48, MCF_CLK); 54 DEFINE_CLK(0, "mcfrng.0", 49, MCF_CLK); 55 DEFINE_CLK(0, "mcfssi.1", 50, MCF_CLK); 56 DEFINE_CLK(0, "sdhci-esdhc-mcf.0", 51, MCF_CLK); 57 DEFINE_CLK(0, "enet-fec.0", 53, MCF_CLK); 58 DEFINE_CLK(0, "enet-fec.1", 54, MCF_CLK); 59 DEFINE_CLK(0, "switch.0", 55, MCF_CLK); 60 DEFINE_CLK(0, "switch.1", 56, MCF_CLK); 61 DEFINE_CLK(0, "nand.0", 63, MCF_CLK); 62 63 DEFINE_CLK(1, "mcfow.0", 2, MCF_CLK); 64 DEFINE_CLK(1, "imx1-i2c.2", 4, MCF_CLK); 65 DEFINE_CLK(1, "imx1-i2c.3", 5, MCF_CLK); 66 DEFINE_CLK(1, "imx1-i2c.4", 6, MCF_CLK); 67 DEFINE_CLK(1, "imx1-i2c.5", 7, MCF_CLK); 68 DEFINE_CLK(1, "mcfuart.4", 24, MCF_BUSCLK); 69 DEFINE_CLK(1, "mcfuart.5", 25, MCF_BUSCLK); 70 DEFINE_CLK(1, "mcfuart.6", 26, MCF_BUSCLK); 71 DEFINE_CLK(1, "mcfuart.7", 27, MCF_BUSCLK); 72 DEFINE_CLK(1, "mcfuart.8", 28, MCF_BUSCLK); 73 DEFINE_CLK(1, "mcfuart.9", 29, MCF_BUSCLK); 74 DEFINE_CLK(1, "mcfpwm.0", 34, MCF_BUSCLK); 75 DEFINE_CLK(1, "sys.0", 36, MCF_BUSCLK); 76 DEFINE_CLK(1, "gpio.0", 37, MCF_BUSCLK); 77 78 DEFINE_CLK(2, "ipg.0", 0, MCF_CLK); 79 DEFINE_CLK(2, "ahb.0", 1, MCF_CLK); 80 DEFINE_CLK(2, "per.0", 2, MCF_CLK); 81 82 static struct clk_lookup m5411x_clk_lookup[] = { 83 CLKDEV_INIT("flexbus", NULL, &__clk_0_2), 84 CLKDEV_INIT("mcfcan.0", NULL, &__clk_0_8), 85 CLKDEV_INIT("mcfcan.1", NULL, &__clk_0_9), 86 CLKDEV_INIT("imx1-i2c.1", NULL, &__clk_0_14), 87 CLKDEV_INIT("mcfdspi.1", NULL, &__clk_0_15), 88 CLKDEV_INIT("edma", NULL, &__clk_0_17), 89 CLKDEV_INIT("intc.0", NULL, &__clk_0_18), 90 CLKDEV_INIT("intc.1", NULL, &__clk_0_19), 91 CLKDEV_INIT("intc.2", NULL, &__clk_0_20), 92 CLKDEV_INIT("imx1-i2c.0", NULL, &__clk_0_22), 93 CLKDEV_INIT("fsl-dspi.0", NULL, &__clk_0_23), 94 CLKDEV_INIT("mcfuart.0", NULL, &__clk_0_24), 95 CLKDEV_INIT("mcfuart.1", NULL, &__clk_0_25), 96 CLKDEV_INIT("mcfuart.2", NULL, &__clk_0_26), 97 CLKDEV_INIT("mcfuart.3", NULL, &__clk_0_27), 98 CLKDEV_INIT("mcftmr.0", NULL, &__clk_0_28), 99 CLKDEV_INIT("mcftmr.1", NULL, &__clk_0_29), 100 CLKDEV_INIT("mcftmr.2", NULL, &__clk_0_30), 101 CLKDEV_INIT("mcftmr.3", NULL, &__clk_0_31), 102 CLKDEV_INIT("mcfpit.0", NULL, &__clk_0_32), 103 CLKDEV_INIT("mcfpit.1", NULL, &__clk_0_33), 104 CLKDEV_INIT("mcfpit.2", NULL, &__clk_0_34), 105 CLKDEV_INIT("mcfpit.3", NULL, &__clk_0_35), 106 CLKDEV_INIT("mcfeport.0", NULL, &__clk_0_37), 107 CLKDEV_INIT("mcfadc.0", NULL, &__clk_0_38), 108 CLKDEV_INIT("mcfdac.0", NULL, &__clk_0_39), 109 CLKDEV_INIT("mcfrtc.0", NULL, &__clk_0_42), 110 CLKDEV_INIT("mcfsim.0", NULL, &__clk_0_43), 111 CLKDEV_INIT("mcfusb-otg.0", NULL, &__clk_0_44), 112 CLKDEV_INIT("mcfusb-host.0", NULL, &__clk_0_45), 113 CLKDEV_INIT("mcfddr-sram.0", NULL, &__clk_0_46), 114 CLKDEV_INIT("mcfssi.0", NULL, &__clk_0_47), 115 CLKDEV_INIT(NULL, "pll.0", &__clk_0_48), 116 CLKDEV_INIT("mcfrng.0", NULL, &__clk_0_49), 117 CLKDEV_INIT("mcfssi.1", NULL, &__clk_0_50), 118 CLKDEV_INIT("sdhci-esdhc-mcf.0", NULL, &__clk_0_51), 119 CLKDEV_INIT("enet-fec.0", NULL, &__clk_0_53), 120 CLKDEV_INIT("enet-fec.1", NULL, &__clk_0_54), 121 CLKDEV_INIT("switch.0", NULL, &__clk_0_55), 122 CLKDEV_INIT("switch.1", NULL, &__clk_0_56), 123 CLKDEV_INIT("nand.0", NULL, &__clk_0_63), 124 CLKDEV_INIT("mcfow.0", NULL, &__clk_1_2), 125 CLKDEV_INIT("imx1-i2c.2", NULL, &__clk_1_4), 126 CLKDEV_INIT("imx1-i2c.3", NULL, &__clk_1_5), 127 CLKDEV_INIT("imx1-i2c.4", NULL, &__clk_1_6), 128 CLKDEV_INIT("imx1-i2c.5", NULL, &__clk_1_7), 129 CLKDEV_INIT("mcfuart.4", NULL, &__clk_1_24), 130 CLKDEV_INIT("mcfuart.5", NULL, &__clk_1_25), 131 CLKDEV_INIT("mcfuart.6", NULL, &__clk_1_26), 132 CLKDEV_INIT("mcfuart.7", NULL, &__clk_1_27), 133 CLKDEV_INIT("mcfuart.8", NULL, &__clk_1_28), 134 CLKDEV_INIT("mcfuart.9", NULL, &__clk_1_29), 135 CLKDEV_INIT("mcfpwm.0", NULL, &__clk_1_34), 136 CLKDEV_INIT(NULL, "sys.0", &__clk_1_36), 137 CLKDEV_INIT("gpio.0", NULL, &__clk_1_37), 138 CLKDEV_INIT("ipg.0", NULL, &__clk_2_0), 139 CLKDEV_INIT("ahb.0", NULL, &__clk_2_1), 140 CLKDEV_INIT("per.0", NULL, &__clk_2_2), 141 }; 142 143 static struct clk * const enable_clks[] __initconst = { 144 /* make sure these clocks are enabled */ 145 &__clk_0_8, /* flexcan.0 */ 146 &__clk_0_9, /* flexcan.1 */ 147 &__clk_0_15, /* dspi.1 */ 148 &__clk_0_17, /* eDMA */ 149 &__clk_0_18, /* intc0 */ 150 &__clk_0_19, /* intc0 */ 151 &__clk_0_20, /* intc0 */ 152 &__clk_0_23, /* dspi.0 */ 153 &__clk_0_24, /* uart0 */ 154 &__clk_0_25, /* uart1 */ 155 &__clk_0_26, /* uart2 */ 156 &__clk_0_27, /* uart3 */ 157 158 &__clk_0_33, /* pit.1 */ 159 &__clk_0_37, /* eport */ 160 &__clk_0_48, /* pll */ 161 &__clk_0_51, /* esdhc */ 162 163 &__clk_1_36, /* CCM/reset module/Power management */ 164 &__clk_1_37, /* gpio */ 165 }; 166 static struct clk * const disable_clks[] __initconst = { 167 &__clk_0_14, /* i2c.1 */ 168 &__clk_0_22, /* i2c.0 */ 169 &__clk_0_23, /* dspi.0 */ 170 &__clk_0_28, /* tmr.1 */ 171 &__clk_0_29, /* tmr.2 */ 172 &__clk_0_30, /* tmr.2 */ 173 &__clk_0_31, /* tmr.3 */ 174 &__clk_0_32, /* pit.0 */ 175 &__clk_0_34, /* pit.2 */ 176 &__clk_0_35, /* pit.3 */ 177 &__clk_0_38, /* adc */ 178 &__clk_0_39, /* dac */ 179 &__clk_0_44, /* usb otg */ 180 &__clk_0_45, /* usb host */ 181 &__clk_0_47, /* ssi.0 */ 182 &__clk_0_49, /* rng */ 183 &__clk_0_50, /* ssi.1 */ 184 &__clk_0_53, /* enet-fec */ 185 &__clk_0_54, /* enet-fec */ 186 &__clk_0_55, /* switch.0 */ 187 &__clk_0_56, /* switch.1 */ 188 189 &__clk_1_2, /* 1-wire */ 190 &__clk_1_4, /* i2c.2 */ 191 &__clk_1_5, /* i2c.3 */ 192 &__clk_1_6, /* i2c.4 */ 193 &__clk_1_7, /* i2c.5 */ 194 &__clk_1_24, /* uart 4 */ 195 &__clk_1_25, /* uart 5 */ 196 &__clk_1_26, /* uart 6 */ 197 &__clk_1_27, /* uart 7 */ 198 &__clk_1_28, /* uart 8 */ 199 &__clk_1_29, /* uart 9 */ 200 }; 201 202 static void __clk_enable2(struct clk *clk) 203 { 204 __raw_writel(__raw_readl(MCFSDHC_CLK) | (1 << clk->slot), MCFSDHC_CLK); 205 } 206 207 static void __clk_disable2(struct clk *clk) 208 { 209 __raw_writel(__raw_readl(MCFSDHC_CLK) & ~(1 << clk->slot), MCFSDHC_CLK); 210 } 211 212 struct clk_ops clk_ops2 = { 213 .enable = __clk_enable2, 214 .disable = __clk_disable2, 215 }; 216 217 static void __init m5441x_clk_init(void) 218 { 219 unsigned i; 220 221 for (i = 0; i < ARRAY_SIZE(enable_clks); ++i) 222 __clk_init_enabled(enable_clks[i]); 223 /* make sure these clocks are disabled */ 224 for (i = 0; i < ARRAY_SIZE(disable_clks); ++i) 225 __clk_init_disabled(disable_clks[i]); 226 227 clkdev_add_table(m5411x_clk_lookup, ARRAY_SIZE(m5411x_clk_lookup)); 228 } 229 230 static void __init m5441x_uarts_init(void) 231 { 232 __raw_writeb(0x0f, MCFGPIO_PAR_UART0); 233 __raw_writeb(0x00, MCFGPIO_PAR_UART1); 234 __raw_writeb(0x00, MCFGPIO_PAR_UART2); 235 } 236 237 static void __init m5441x_fec_init(void) 238 { 239 __raw_writeb(0x03, MCFGPIO_PAR_FEC); 240 } 241 242 void __init config_BSP(char *commandp, int size) 243 { 244 m5441x_clk_init(); 245 mach_sched_init = hw_timer_init; 246 m5441x_uarts_init(); 247 m5441x_fec_init(); 248 } 249