/* * r8a7779 clock framework support * * Copyright (C) 2011 Renesas Solutions Corp. * Copyright (C) 2011 Magnus Damm * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #define FRQMR IOMEM(0xffc80014) #define MSTPCR0 IOMEM(0xffc80030) #define MSTPCR1 IOMEM(0xffc80034) #define MSTPCR3 IOMEM(0xffc8003c) #define MSTPSR1 IOMEM(0xffc80044) #define MSTPSR4 IOMEM(0xffc80048) #define MSTPSR6 IOMEM(0xffc8004c) #define MSTPCR4 IOMEM(0xffc80050) #define MSTPCR5 IOMEM(0xffc80054) #define MSTPCR6 IOMEM(0xffc80058) #define MSTPCR7 IOMEM(0xffc80040) /* ioremap() through clock mapping mandatory to avoid * collision with ARM coherent DMA virtual memory range. */ static struct clk_mapping cpg_mapping = { .phys = 0xffc80000, .len = 0x80, }; /* * Default rate for the root input clock, reset this with clk_set_rate() * from the platform code. */ static struct clk plla_clk = { .rate = 1500000000, .mapping = &cpg_mapping, }; static struct clk *main_clks[] = { &plla_clk, }; static int divisors[] = { 0, 0, 0, 6, 8, 12, 16, 0, 24, 32, 36, 0, 0, 0, 0, 0 }; static struct clk_div_mult_table div4_div_mult_table = { .divisors = divisors, .nr_divisors = ARRAY_SIZE(divisors), }; static struct clk_div4_table div4_table = { .div_mult_table = &div4_div_mult_table, }; enum { DIV4_S, DIV4_OUT, DIV4_S4, DIV4_S3, DIV4_S1, DIV4_P, DIV4_NR }; static struct clk div4_clks[DIV4_NR] = { [DIV4_S] = SH_CLK_DIV4(&plla_clk, FRQMR, 20, 0x0018, CLK_ENABLE_ON_INIT), [DIV4_OUT] = SH_CLK_DIV4(&plla_clk, FRQMR, 16, 0x0700, CLK_ENABLE_ON_INIT), [DIV4_S4] = SH_CLK_DIV4(&plla_clk, FRQMR, 12, 0x0040, CLK_ENABLE_ON_INIT), [DIV4_S3] = SH_CLK_DIV4(&plla_clk, FRQMR, 8, 0x0010, CLK_ENABLE_ON_INIT), [DIV4_S1] = SH_CLK_DIV4(&plla_clk, FRQMR, 4, 0x0060, CLK_ENABLE_ON_INIT), [DIV4_P] = SH_CLK_DIV4(&plla_clk, FRQMR, 0, 0x0300, CLK_ENABLE_ON_INIT), }; enum { MSTP323, MSTP322, MSTP321, MSTP320, MSTP101, MSTP100, MSTP030, MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, MSTP016, MSTP015, MSTP014, MSTP007, MSTP_NR }; static struct clk mstp_clks[MSTP_NR] = { [MSTP323] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 23, 0), /* SDHI0 */ [MSTP322] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 22, 0), /* SDHI1 */ [MSTP321] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 21, 0), /* SDHI2 */ [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 20, 0), /* SDHI3 */ [MSTP101] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 1, 0), /* USB2 */ [MSTP100] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 0, 0), /* USB0/1 */ [MSTP030] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 30, 0), /* I2C0 */ [MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0), /* I2C1 */ [MSTP028] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 28, 0), /* I2C2 */ [MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0), /* I2C3 */ [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0), /* SCIF0 */ [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0), /* SCIF1 */ [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0), /* SCIF2 */ [MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0), /* SCIF3 */ [MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0), /* SCIF4 */ [MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0), /* SCIF5 */ [MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0), /* TMU0 */ [MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0), /* TMU1 */ [MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0), /* TMU2 */ [MSTP007] = SH_CLK_MSTP32(&div4_clks[DIV4_S], MSTPCR0, 7, 0), /* HSPI */ }; static unsigned long mul4_recalc(struct clk *clk) { return clk->parent->rate * 4; } static struct sh_clk_ops mul4_clk_ops = { .recalc = mul4_recalc, }; struct clk clkz_clk = { .ops = &mul4_clk_ops, .parent = &div4_clks[DIV4_S], }; struct clk clkzs_clk = { /* clks x 4 / 4 = clks */ .parent = &div4_clks[DIV4_S], }; static struct clk *late_main_clks[] = { &clkz_clk, &clkzs_clk, }; static struct clk_lookup lookups[] = { /* main clocks */ CLKDEV_CON_ID("plla_clk", &plla_clk), CLKDEV_CON_ID("clkz_clk", &clkz_clk), CLKDEV_CON_ID("clkzs_clk", &clkzs_clk), /* DIV4 clocks */ CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_S]), CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_OUT]), CLKDEV_CON_ID("shyway4_clk", &div4_clks[DIV4_S4]), CLKDEV_CON_ID("shyway3_clk", &div4_clks[DIV4_S3]), CLKDEV_CON_ID("shyway1_clk", &div4_clks[DIV4_S1]), CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]), /* MSTP32 clocks */ CLKDEV_DEV_ID("ehci-platform.1", &mstp_clks[MSTP101]), /* USB EHCI port2 */ CLKDEV_DEV_ID("ohci-platform.1", &mstp_clks[MSTP101]), /* USB OHCI port2 */ CLKDEV_DEV_ID("ehci-platform.0", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */ CLKDEV_DEV_ID("ohci-platform.0", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */ CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */ CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP016]), /* TMU01 */ CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */ CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */ CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */ CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */ CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */ CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */ CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */ CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */ CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */ CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */ CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */ CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */ CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */ CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */ CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */ CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */ CLKDEV_DEV_ID("sh_mobile_sdhi.3", &mstp_clks[MSTP320]), /* SDHI3 */ }; void __init r8a7779_clock_init(void) { int k, ret = 0; for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++) ret = clk_register(main_clks[k]); if (!ret) ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table); if (!ret) ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++) ret = clk_register(late_main_clks[k]); clkdev_add_table(lookups, ARRAY_SIZE(lookups)); if (!ret) shmobile_clk_init(); else panic("failed to setup r8a7779 clocks\n"); }