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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 | /* * pxa1928 clock framework source file * * Copyright (C) 2015 Linaro, Ltd. * Rob Herring <robh@kernel.org> * * Based on drivers/clk/mmp/clk-of-mmp2.c: * Copyright (C) 2012 Marvell * Chao Xie <xiechao.mail@gmail.com> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/kernel.h> #include <linux/io.h> #include <linux/of_address.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <dt-bindings/clock/marvell,pxa1928.h> #include "clk.h" #include "reset.h" #define MPMU_UART_PLL 0x14 struct pxa1928_clk_unit { struct mmp_clk_unit unit; void __iomem *mpmu_base; void __iomem *apmu_base; void __iomem *apbc_base; void __iomem *apbcp_base; }; static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = { {0, "clk32", NULL, CLK_IS_ROOT, 32768}, {0, "vctcxo", NULL, CLK_IS_ROOT, 26000000}, {0, "pll1_624", NULL, CLK_IS_ROOT, 624000000}, {0, "pll5p", NULL, CLK_IS_ROOT, 832000000}, {0, "pll5", NULL, CLK_IS_ROOT, 1248000000}, {0, "usb_pll", NULL, CLK_IS_ROOT, 480000000}, }; static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = { {0, "pll1_d2", "pll1_624", 1, 2, 0}, {0, "pll1_d9", "pll1_624", 1, 9, 0}, {0, "pll1_d12", "pll1_624", 1, 12, 0}, {0, "pll1_d16", "pll1_624", 1, 16, 0}, {0, "pll1_d20", "pll1_624", 1, 20, 0}, {0, "pll1_416", "pll1_624", 2, 3, 0}, {0, "vctcxo_d2", "vctcxo", 1, 2, 0}, {0, "vctcxo_d4", "vctcxo", 1, 4, 0}, }; static struct mmp_clk_factor_masks uart_factor_masks = { .factor = 2, .num_mask = 0x1fff, .den_mask = 0x1fff, .num_shift = 16, .den_shift = 0, }; static struct mmp_clk_factor_tbl uart_factor_tbl[] = { {.num = 832, .den = 234}, /*58.5MHZ */ {.num = 1, .den = 1}, /*26MHZ */ }; static void pxa1928_pll_init(struct pxa1928_clk_unit *pxa_unit) { struct clk *clk; struct mmp_clk_unit *unit = &pxa_unit->unit; mmp_register_fixed_rate_clks(unit, fixed_rate_clks, ARRAY_SIZE(fixed_rate_clks)); mmp_register_fixed_factor_clks(unit, fixed_factor_clks, ARRAY_SIZE(fixed_factor_clks)); clk = mmp_clk_register_factor("uart_pll", "pll1_416", CLK_SET_RATE_PARENT, pxa_unit->mpmu_base + MPMU_UART_PLL, &uart_factor_masks, uart_factor_tbl, ARRAY_SIZE(uart_factor_tbl), NULL); } static DEFINE_SPINLOCK(uart0_lock); static DEFINE_SPINLOCK(uart1_lock); static DEFINE_SPINLOCK(uart2_lock); static DEFINE_SPINLOCK(uart3_lock); static const char *uart_parent_names[] = {"uart_pll", "vctcxo"}; static DEFINE_SPINLOCK(ssp0_lock); static DEFINE_SPINLOCK(ssp1_lock); static const char *ssp_parent_names[] = {"vctcxo_d4", "vctcxo_d2", "vctcxo", "pll1_d12"}; static DEFINE_SPINLOCK(reset_lock); static struct mmp_param_mux_clk apbc_mux_clks[] = { {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART0 * 4, 4, 3, 0, &uart0_lock}, {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART1 * 4, 4, 3, 0, &uart1_lock}, {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART2 * 4, 4, 3, 0, &uart2_lock}, {0, "uart3_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART3 * 4, 4, 3, 0, &uart3_lock}, {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SSP0 * 4, 4, 3, 0, &ssp0_lock}, {0, "ssp1_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SSP1 * 4, 4, 3, 0, &ssp1_lock}, }; static struct mmp_param_gate_clk apbc_gate_clks[] = { {PXA1928_CLK_TWSI0, "twsi0_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI0 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_TWSI1, "twsi1_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI1 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_TWSI2, "twsi2_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI2 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_TWSI3, "twsi3_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI3 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_TWSI4, "twsi4_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI4 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_TWSI5, "twsi5_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI5 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_GPIO * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_KPC, "kpc_clk", "clk32", CLK_SET_RATE_PARENT, PXA1928_CLK_KPC * 4, 0x3, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, {PXA1928_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, PXA1928_CLK_RTC * 4, 0x83, 0x83, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, {PXA1928_CLK_PWM0, "pwm0_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM0 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_PWM1, "pwm1_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM1 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_PWM2, "pwm2_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM2 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, {PXA1928_CLK_PWM3, "pwm3_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM3 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, /* The gate clocks has mux parent. */ {PXA1928_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART0 * 4, 0x3, 0x3, 0x0, 0, &uart0_lock}, {PXA1928_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART1 * 4, 0x3, 0x3, 0x0, 0, &uart1_lock}, {PXA1928_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART2 * 4, 0x3, 0x3, 0x0, 0, &uart2_lock}, {PXA1928_CLK_UART3, "uart3_clk", "uart3_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART3 * 4, 0x3, 0x3, 0x0, 0, &uart3_lock}, {PXA1928_CLK_SSP0, "ssp0_clk", "ssp0_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_SSP0 * 4, 0x3, 0x3, 0x0, 0, &ssp0_lock}, {PXA1928_CLK_SSP1, "ssp1_clk", "ssp1_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_SSP1 * 4, 0x3, 0x3, 0x0, 0, &ssp1_lock}, }; static void pxa1928_apb_periph_clk_init(struct pxa1928_clk_unit *pxa_unit) { struct mmp_clk_unit *unit = &pxa_unit->unit; mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->apbc_base, ARRAY_SIZE(apbc_mux_clks)); mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->apbc_base, ARRAY_SIZE(apbc_gate_clks)); } static DEFINE_SPINLOCK(sdh0_lock); static DEFINE_SPINLOCK(sdh1_lock); static DEFINE_SPINLOCK(sdh2_lock); static DEFINE_SPINLOCK(sdh3_lock); static DEFINE_SPINLOCK(sdh4_lock); static const char *sdh_parent_names[] = {"pll1_624", "pll5p", "pll5", "pll1_416"}; static DEFINE_SPINLOCK(usb_lock); static struct mmp_param_mux_clk apmu_mux_clks[] = { {0, "sdh_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SDH0 * 4, 8, 2, 0, &sdh0_lock}, }; static struct mmp_param_div_clk apmu_div_clks[] = { {0, "sdh_div", "sdh_mux", 0, PXA1928_CLK_SDH0 * 4, 10, 4, CLK_DIVIDER_ONE_BASED, &sdh0_lock}, }; static struct mmp_param_gate_clk apmu_gate_clks[] = { {PXA1928_CLK_USB, "usb_clk", "usb_pll", 0, PXA1928_CLK_USB * 4, 0x9, 0x9, 0x0, 0, &usb_lock}, {PXA1928_CLK_HSIC, "hsic_clk", "usb_pll", 0, PXA1928_CLK_HSIC * 4, 0x9, 0x9, 0x0, 0, &usb_lock}, /* The gate clocks has mux parent. */ {PXA1928_CLK_SDH0, "sdh0_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH0 * 4, 0x1b, 0x1b, 0x0, 0, &sdh0_lock}, {PXA1928_CLK_SDH1, "sdh1_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH1 * 4, 0x1b, 0x1b, 0x0, 0, &sdh1_lock}, {PXA1928_CLK_SDH2, "sdh2_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH2 * 4, 0x1b, 0x1b, 0x0, 0, &sdh2_lock}, {PXA1928_CLK_SDH3, "sdh3_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH3 * 4, 0x1b, 0x1b, 0x0, 0, &sdh3_lock}, {PXA1928_CLK_SDH4, "sdh4_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH4 * 4, 0x1b, 0x1b, 0x0, 0, &sdh4_lock}, }; static void pxa1928_axi_periph_clk_init(struct pxa1928_clk_unit *pxa_unit) { struct mmp_clk_unit *unit = &pxa_unit->unit; mmp_register_mux_clks(unit, apmu_mux_clks, pxa_unit->apmu_base, ARRAY_SIZE(apmu_mux_clks)); mmp_register_div_clks(unit, apmu_div_clks, pxa_unit->apmu_base, ARRAY_SIZE(apmu_div_clks)); mmp_register_gate_clks(unit, apmu_gate_clks, pxa_unit->apmu_base, ARRAY_SIZE(apmu_gate_clks)); } static void pxa1928_clk_reset_init(struct device_node *np, struct pxa1928_clk_unit *pxa_unit) { struct mmp_clk_reset_cell *cells; int i, base, nr_resets; nr_resets = ARRAY_SIZE(apbc_gate_clks); cells = kcalloc(nr_resets, sizeof(*cells), GFP_KERNEL); if (!cells) return; base = 0; for (i = 0; i < nr_resets; i++) { cells[base + i].clk_id = apbc_gate_clks[i].id; cells[base + i].reg = pxa_unit->apbc_base + apbc_gate_clks[i].offset; cells[base + i].flags = 0; cells[base + i].lock = apbc_gate_clks[i].lock; cells[base + i].bits = 0x4; } mmp_clk_reset_register(np, cells, nr_resets); } static void __init pxa1928_mpmu_clk_init(struct device_node *np) { struct pxa1928_clk_unit *pxa_unit; pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); if (!pxa_unit) return; pxa_unit->mpmu_base = of_iomap(np, 0); if (!pxa_unit->mpmu_base) { pr_err("failed to map mpmu registers\n"); return; } pxa1928_pll_init(pxa_unit); } CLK_OF_DECLARE(pxa1928_mpmu_clk, "marvell,pxa1928-mpmu", pxa1928_mpmu_clk_init); static void __init pxa1928_apmu_clk_init(struct device_node *np) { struct pxa1928_clk_unit *pxa_unit; pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); if (!pxa_unit) return; pxa_unit->apmu_base = of_iomap(np, 0); if (!pxa_unit->apmu_base) { pr_err("failed to map apmu registers\n"); return; } mmp_clk_init(np, &pxa_unit->unit, PXA1928_APMU_NR_CLKS); pxa1928_axi_periph_clk_init(pxa_unit); } CLK_OF_DECLARE(pxa1928_apmu_clk, "marvell,pxa1928-apmu", pxa1928_apmu_clk_init); static void __init pxa1928_apbc_clk_init(struct device_node *np) { struct pxa1928_clk_unit *pxa_unit; pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); if (!pxa_unit) return; pxa_unit->apbc_base = of_iomap(np, 0); if (!pxa_unit->apbc_base) { pr_err("failed to map apbc registers\n"); return; } mmp_clk_init(np, &pxa_unit->unit, PXA1928_APBC_NR_CLKS); pxa1928_apb_periph_clk_init(pxa_unit); pxa1928_clk_reset_init(np, pxa_unit); } CLK_OF_DECLARE(pxa1928_apbc_clk, "marvell,pxa1928-apbc", pxa1928_apbc_clk_init); |