/* * arch/sh/kernel/cpu/sh4a/clock-sh7786.c * * SH7786 support for the clock framework * * Copyright (C) 2010 Paul Mundt * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include #include #include #include #include #include #include /* * Default rate for the root input clock, reset this with clk_set_rate() * from the platform code. */ static struct clk extal_clk = { .rate = 33333333, }; static unsigned long pll_recalc(struct clk *clk) { int multiplier; /* * Clock modes 0, 1, and 2 use an x64 multiplier against PLL1, * while modes 3, 4, and 5 use an x32. */ multiplier = (sh_mv.mv_mode_pins() & 0xf) < 3 ? 64 : 32; return clk->parent->rate * multiplier; } static struct sh_clk_ops pll_clk_ops = { .recalc = pll_recalc, }; static struct clk pll_clk = { .ops = &pll_clk_ops, .parent = &extal_clk, .flags = CLK_ENABLE_ON_INIT, }; static struct clk *clks[] = { &extal_clk, &pll_clk, }; static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18, 24, 32, 36, 48 }; static struct clk_div_mult_table div4_div_mult_table = { .divisors = div2, .nr_divisors = ARRAY_SIZE(div2), }; static struct clk_div4_table div4_table = { .div_mult_table = &div4_div_mult_table, }; enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_DU, DIV4_P, DIV4_NR }; #define DIV4(_bit, _mask, _flags) \ SH_CLK_DIV4(&pll_clk, FRQMR1, _bit, _mask, _flags) struct clk div4_clks[DIV4_NR] = { [DIV4_P] = DIV4(0, 0x0b40, 0), [DIV4_DU] = DIV4(4, 0x0010, 0), [DIV4_DDR] = DIV4(12, 0x0002, CLK_ENABLE_ON_INIT), [DIV4_B] = DIV4(16, 0x0360, CLK_ENABLE_ON_INIT), [DIV4_SH] = DIV4(20, 0x0002, CLK_ENABLE_ON_INIT), [DIV4_I] = DIV4(28, 0x0006, CLK_ENABLE_ON_INIT), }; #define MSTPCR0 0xffc40030 #define MSTPCR1 0xffc40034 enum { MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, MSTP020, MSTP017, MSTP016, MSTP015, MSTP014, MSTP011, MSTP010, MSTP009, MSTP008, MSTP005, MSTP004, MSTP002, MSTP112, MSTP110, MSTP109, MSTP108, MSTP105, MSTP104, MSTP103, MSTP102, MSTP_NR }; static struct clk mstp_clks[MSTP_NR] = { /* MSTPCR0 */ [MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0), [MSTP028] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 28, 0), [MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0), [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0), [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0), [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0), [MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0), [MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0), [MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0), [MSTP020] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 20, 0), [MSTP017] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 17, 0), [MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0), [MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0), [MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0), [MSTP011] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 11, 0), [MSTP010] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0), [MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0), [MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0), [MSTP005] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 5, 0), [MSTP004] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 4, 0), [MSTP002] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 2, 0), /* MSTPCR1 */ [MSTP112] = SH_CLK_MSTP32(NULL, MSTPCR1, 12, 0), [MSTP110] = SH_CLK_MSTP32(NULL, MSTPCR1, 10, 0), [MSTP109] = SH_CLK_MSTP32(NULL, MSTPCR1, 9, 0), [MSTP108] = SH_CLK_MSTP32(NULL, MSTPCR1, 8, 0), [MSTP105] = SH_CLK_MSTP32(NULL, MSTPCR1, 5, 0), [MSTP104] = SH_CLK_MSTP32(NULL, MSTPCR1, 4, 0), [MSTP103] = SH_CLK_MSTP32(NULL, MSTPCR1, 3, 0), [MSTP102] = SH_CLK_MSTP32(NULL, MSTPCR1, 2, 0), }; static struct clk_lookup lookups[] = { /* main clocks */ CLKDEV_CON_ID("extal", &extal_clk), CLKDEV_CON_ID("pll_clk", &pll_clk), /* DIV4 clocks */ CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]), CLKDEV_CON_ID("du_clk", &div4_clks[DIV4_DU]), CLKDEV_CON_ID("ddr_clk", &div4_clks[DIV4_DDR]), CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]), CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]), CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]), /* MSTP32 clocks */ CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP029]), CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP028]), CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP027]), CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP026]), CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]), CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP024]), CLKDEV_CON_ID("ssi3_fck", &mstp_clks[MSTP023]), CLKDEV_CON_ID("ssi2_fck", &mstp_clks[MSTP022]), CLKDEV_CON_ID("ssi1_fck", &mstp_clks[MSTP021]), CLKDEV_CON_ID("ssi0_fck", &mstp_clks[MSTP020]), CLKDEV_CON_ID("hac1_fck", &mstp_clks[MSTP017]), CLKDEV_CON_ID("hac0_fck", &mstp_clks[MSTP016]), CLKDEV_CON_ID("i2c1_fck", &mstp_clks[MSTP015]), CLKDEV_CON_ID("i2c0_fck", &mstp_clks[MSTP014]), CLKDEV_ICK_ID("fck", "sh-tmu.0", &mstp_clks[MSTP008]), CLKDEV_ICK_ID("fck", "sh-tmu.1", &mstp_clks[MSTP009]), CLKDEV_ICK_ID("fck", "sh-tmu.2", &mstp_clks[MSTP010]), CLKDEV_ICK_ID("fck", "sh-tmu.3", &mstp_clks[MSTP011]), CLKDEV_CON_ID("sdif1_fck", &mstp_clks[MSTP005]), CLKDEV_CON_ID("sdif0_fck", &mstp_clks[MSTP004]), CLKDEV_CON_ID("hspi_fck", &mstp_clks[MSTP002]), CLKDEV_CON_ID("usb_fck", &mstp_clks[MSTP112]), CLKDEV_CON_ID("pcie2_fck", &mstp_clks[MSTP110]), CLKDEV_CON_ID("pcie1_fck", &mstp_clks[MSTP109]), CLKDEV_CON_ID("pcie0_fck", &mstp_clks[MSTP108]), CLKDEV_CON_ID("dmac_11_6_fck", &mstp_clks[MSTP105]), CLKDEV_CON_ID("dmac_5_0_fck", &mstp_clks[MSTP104]), CLKDEV_CON_ID("du_fck", &mstp_clks[MSTP103]), CLKDEV_CON_ID("ether_fck", &mstp_clks[MSTP102]), }; int __init arch_clk_init(void) { int i, ret = 0; for (i = 0; i < ARRAY_SIZE(clks); i++) ret |= clk_register(clks[i]); for (i = 0; i < ARRAY_SIZE(lookups); i++) clkdev_add(&lookups[i]); if (!ret) ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks), &div4_table); if (!ret) ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); return ret; }