/* * r8a7778 clock framework support * * Copyright (C) 2013 Renesas Solutions Corp. * Copyright (C) 2013 Kuninori Morimoto * * based on r8a7779 * * 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 */ /* * MD MD MD MD PLLA PLLB EXTAL clki clkz * 19 18 12 11 (HMz) (MHz) (MHz) *---------------------------------------------------------------------------- * 1 0 0 0 x21 x21 38.00 800 800 * 1 0 0 1 x24 x24 33.33 800 800 * 1 0 1 0 x28 x28 28.50 800 800 * 1 0 1 1 x32 x32 25.00 800 800 * 1 1 0 1 x24 x21 33.33 800 700 * 1 1 1 0 x28 x21 28.50 800 600 * 1 1 1 1 x32 x24 25.00 800 600 */ #include #include #include #include #include #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 MODEMR 0xFFCC0020 #define MD(nr) BIT(nr) /* 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, }; static struct clk extal_clk = { /* .rate will be updated on r8a7778_clock_init() */ .mapping = &cpg_mapping, }; /* * clock ratio of these clock will be updated * on r8a7778_clock_init() */ SH_FIXED_RATIO_CLK_SET(plla_clk, extal_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(pllb_clk, extal_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(i_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(s_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(s1_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(s3_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(s4_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(b_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(out_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(p_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(g_clk, plla_clk, 1, 1); SH_FIXED_RATIO_CLK_SET(z_clk, pllb_clk, 1, 1); static struct clk *main_clks[] = { &extal_clk, &plla_clk, &pllb_clk, &i_clk, &s_clk, &s1_clk, &s3_clk, &s4_clk, &b_clk, &out_clk, &p_clk, &g_clk, &z_clk, }; enum { MSTP331, MSTP323, MSTP322, MSTP321, MSTP114, MSTP100, MSTP030, MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, MSTP016, MSTP015, MSTP007, MSTP_NR }; static struct clk mstp_clks[MSTP_NR] = { [MSTP331] = SH_CLK_MSTP32(&s4_clk, MSTPCR3, 31, 0), /* MMC */ [MSTP323] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 23, 0), /* SDHI0 */ [MSTP322] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 22, 0), /* SDHI1 */ [MSTP321] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 21, 0), /* SDHI2 */ [MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */ [MSTP100] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 0, 0), /* USB0/1 */ [MSTP030] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 30, 0), /* I2C0 */ [MSTP029] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 29, 0), /* I2C1 */ [MSTP028] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 28, 0), /* I2C2 */ [MSTP027] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 27, 0), /* I2C3 */ [MSTP026] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 26, 0), /* SCIF0 */ [MSTP025] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 25, 0), /* SCIF1 */ [MSTP024] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 24, 0), /* SCIF2 */ [MSTP023] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 23, 0), /* SCIF3 */ [MSTP022] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 22, 0), /* SCIF4 */ [MSTP021] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 21, 0), /* SCIF5 */ [MSTP016] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 16, 0), /* TMU0 */ [MSTP015] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 15, 0), /* TMU1 */ [MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 7, 0), /* HSPI */ }; static struct clk_lookup lookups[] = { /* main */ CLKDEV_CON_ID("shyway_clk", &s_clk), CLKDEV_CON_ID("peripheral_clk", &p_clk), /* MSTP32 clocks */ CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP331]), /* MMC */ 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("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */ CLKDEV_DEV_ID("ehci-platform", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */ CLKDEV_DEV_ID("ohci-platform", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */ 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_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */ CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP015]), /* TMU01 */ 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 */ }; void __init r8a7778_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); switch (mode & (MD(19) | MD(18) | MD(12) | MD(11))) { case MD(19): extal_clk.rate = 38000000; SH_CLK_SET_RATIO(&plla_clk_ratio, 21, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1); break; case MD(19) | MD(11): extal_clk.rate = 33333333; SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1); break; case MD(19) | MD(12): extal_clk.rate = 28500000; SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 28, 1); break; case MD(19) | MD(12) | MD(11): extal_clk.rate = 25000000; SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 32, 1); break; case MD(19) | MD(18) | MD(11): extal_clk.rate = 33333333; SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1); break; case MD(19) | MD(18) | MD(12): extal_clk.rate = 28500000; SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1); break; case MD(19) | MD(18) | MD(12) | MD(11): extal_clk.rate = 25000000; SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1); SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1); break; default: BUG(); } if (mode & MD(1)) { SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1); SH_CLK_SET_RATIO(&s_clk_ratio, 1, 3); SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 6); SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4); SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&p_clk_ratio, 1, 12); SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12); if (mode & MD(2)) { SH_CLK_SET_RATIO(&b_clk_ratio, 1, 18); SH_CLK_SET_RATIO(&out_clk_ratio, 1, 18); } else { SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12); SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12); } } else { SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1); SH_CLK_SET_RATIO(&s_clk_ratio, 1, 4); SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4); SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8); SH_CLK_SET_RATIO(&p_clk_ratio, 1, 16); SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12); if (mode & MD(2)) { SH_CLK_SET_RATIO(&b_clk_ratio, 1, 16); SH_CLK_SET_RATIO(&out_clk_ratio, 1, 16); } else { SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12); SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12); } } 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 r8a7778 clocks\n"); }