/* * 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 #include #include /* * MD1 = 1 MD1 = 0 * (PLLA = 1500) (PLLA = 1600) * (MHz) (MHz) *------------------------------------------------+-------------------- * clkz 1000 (2/3) 800 (1/2) * clkzs 250 (1/6) 200 (1/8) * clki 750 (1/2) 800 (1/2) * clks 250 (1/6) 200 (1/8) * clks1 125 (1/12) 100 (1/16) * clks3 187.5 (1/8) 200 (1/8) * clks4 93.7 (1/16) 100 (1/16) * clkp 62.5 (1/24) 50 (1/32) * clkg 62.5 (1/24) 66.6 (1/24) * clkb, CLKOUT * (MD2 = 0) 62.5 (1/24) 66.6 (1/24) * (MD2 = 1) 41.6 (1/36) 50 (1/32) */ #define MD(nr) BIT(nr) #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) #define MODEMR 0xffcc0020 /* 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 will be updated on r8a7779_clock_init() */ .mapping = &cpg_mapping, }; /* * clock ratio of these clock will be updated * on r8a7779_clock_init() */ SH_FIXED_RATIO_CLK_SET(clkz_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clkzs_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clki_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clks_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clks1_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clks3_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clks4_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clkb_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clkout_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clkp_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(clkg_clk, plla_clk, 1, 1); static struct clk *main_clks[] = { &plla_clk, &clkz_clk, &clkzs_clk, &clki_clk, &clks_clk, &clks1_clk, &clks3_clk, &clks4_clk, &clkb_clk, &clkout_clk, &clkp_clk, &clkg_clk, }; enum { MSTP323, MSTP322, MSTP321, MSTP320, MSTP116, MSTP115, MSTP114, MSTP103, 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(&clkp_clk, MSTPCR3, 23, 0), /* SDHI0 */ [MSTP322] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 22, 0), /* SDHI1 */ [MSTP321] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 21, 0), /* SDHI2 */ [MSTP320] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 20, 0), /* SDHI3 */ [MSTP116] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 16, 0), /* PCIe */ [MSTP115] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 15, 0), /* SATA */ [MSTP114] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 14, 0), /* Ether */ [MSTP103] = SH_CLK_MSTP32(&clks_clk, MSTPCR1, 3, 0), /* DU */ [MSTP101] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 1, 0), /* USB2 */ [MSTP100] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 0, 0), /* USB0/1 */ [MSTP030] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 30, 0), /* I2C0 */ [MSTP029] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 29, 0), /* I2C1 */ [MSTP028] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 28, 0), /* I2C2 */ [MSTP027] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 27, 0), /* I2C3 */ [MSTP026] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 26, 0), /* SCIF0 */ [MSTP025] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 25, 0), /* SCIF1 */ [MSTP024] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 24, 0), /* SCIF2 */ [MSTP023] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 23, 0), /* SCIF3 */ [MSTP022] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 22, 0), /* SCIF4 */ [MSTP021] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 21, 0), /* SCIF5 */ [MSTP016] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 16, 0), /* TMU0 */ [MSTP015] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 15, 0), /* TMU1 */ [MSTP014] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 14, 0), /* TMU2 */ [MSTP007] = SH_CLK_MSTP32(&clks_clk, MSTPCR0, 7, 0), /* HSPI */ }; 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", &clks_clk), CLKDEV_CON_ID("bus_clk", &clkout_clk), CLKDEV_CON_ID("shyway4_clk", &clks4_clk), CLKDEV_CON_ID("shyway3_clk", &clks3_clk), CLKDEV_CON_ID("shyway1_clk", &clks1_clk), CLKDEV_CON_ID("peripheral_clk", &clkp_clk), /* MSTP32 clocks */ CLKDEV_DEV_ID("rcar-pcie", &mstp_clks[MSTP116]), /* PCIe */ CLKDEV_DEV_ID("sata_rcar", &mstp_clks[MSTP115]), /* SATA */ CLKDEV_DEV_ID("fc600000.sata", &mstp_clks[MSTP115]), /* SATA w/DT */ CLKDEV_DEV_ID("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */ 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("sh_tmu.2", &mstp_clks[MSTP016]), /* TMU02 */ 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 */ CLKDEV_DEV_ID("rcar-du.0", &mstp_clks[MSTP103]), /* DU */ }; void __init r8a7779_clock_init(void) { void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE); u32 mode; int k, ret = 0; BUG_ON(!modemr); mode = ioread32(modemr); iounmap(modemr); if (mode & MD(1)) { plla_clk.rate = 1500000000; SH_CLK_SET_RATIO(&clkz_clk_ratio, 2, 3); SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 6); SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 6); SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 12); SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 24); SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); if (mode & MD(2)) { SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 36); SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 36); } else { SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); } } else { plla_clk.rate = 1600000000; SH_CLK_SET_RATIO(&clkz_clk_ratio, 1, 2); SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 16); SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 32); SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); if (mode & MD(2)) { SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 32); SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 32); } else { SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); } } for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++) ret = clk_register(main_clks[k]); if (!ret) ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); clkdev_add_table(lookups, ARRAY_SIZE(lookups)); if (!ret) shmobile_clk_init(); else panic("failed to setup r8a7779 clocks\n"); }