| /* |
| * r8a7791 clock framework support |
| * |
| * Copyright (C) 2013 Renesas Electronics Corporation |
| * Copyright (C) 2013 Renesas Solutions Corp. |
| * Copyright (C) 2013 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; 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/sh_clk.h> |
| #include <linux/clkdev.h> |
| #include "clock.h" |
| #include "common.h" |
| #include "rcar-gen2.h" |
| |
| /* |
| * MD EXTAL PLL0 PLL1 PLL3 |
| * 14 13 19 (MHz) *1 *1 |
| *--------------------------------------------------- |
| * 0 0 0 15 x 1 x172/2 x208/2 x106 |
| * 0 0 1 15 x 1 x172/2 x208/2 x88 |
| * 0 1 0 20 x 1 x130/2 x156/2 x80 |
| * 0 1 1 20 x 1 x130/2 x156/2 x66 |
| * 1 0 0 26 / 2 x200/2 x240/2 x122 |
| * 1 0 1 26 / 2 x200/2 x240/2 x102 |
| * 1 1 0 30 / 2 x172/2 x208/2 x106 |
| * 1 1 1 30 / 2 x172/2 x208/2 x88 |
| * |
| * *1 : Table 7.6 indicates VCO ouput (PLLx = VCO/2) |
| * see "p1 / 2" on R8A7791_CLOCK_ROOT() below |
| */ |
| |
| #define CPG_BASE 0xe6150000 |
| #define CPG_LEN 0x1000 |
| |
| #define SMSTPCR0 0xE6150130 |
| #define SMSTPCR1 0xE6150134 |
| #define SMSTPCR2 0xe6150138 |
| #define SMSTPCR3 0xE615013C |
| #define SMSTPCR5 0xE6150144 |
| #define SMSTPCR7 0xe615014c |
| #define SMSTPCR8 0xE6150990 |
| #define SMSTPCR9 0xE6150994 |
| #define SMSTPCR10 0xE6150998 |
| #define SMSTPCR11 0xE615099C |
| |
| #define MSTPSR1 IOMEM(0xe6150038) |
| #define MSTPSR2 IOMEM(0xe6150040) |
| #define MSTPSR3 IOMEM(0xe6150048) |
| #define MSTPSR5 IOMEM(0xe615003c) |
| #define MSTPSR7 IOMEM(0xe61501c4) |
| #define MSTPSR8 IOMEM(0xe61509a0) |
| #define MSTPSR9 IOMEM(0xe61509a4) |
| #define MSTPSR11 IOMEM(0xe61509ac) |
| |
| #define SDCKCR 0xE6150074 |
| #define SD1CKCR 0xE6150078 |
| #define SD2CKCR 0xE615026c |
| #define MMC0CKCR 0xE6150240 |
| #define MMC1CKCR 0xE6150244 |
| #define SSPCKCR 0xE6150248 |
| #define SSPRSCKCR 0xE615024C |
| |
| static struct clk_mapping cpg_mapping = { |
| .phys = CPG_BASE, |
| .len = CPG_LEN, |
| }; |
| |
| static struct clk extal_clk = { |
| /* .rate will be updated on r8a7791_clock_init() */ |
| .mapping = &cpg_mapping, |
| }; |
| |
| static struct sh_clk_ops followparent_clk_ops = { |
| .recalc = followparent_recalc, |
| }; |
| |
| static struct clk main_clk = { |
| /* .parent will be set r8a73a4_clock_init */ |
| .ops = &followparent_clk_ops, |
| }; |
| |
| /* |
| * clock ratio of these clock will be updated |
| * on r8a7791_clock_init() |
| */ |
| SH_FIXED_RATIO_CLK_SET(pll1_clk, main_clk, 1, 1); |
| SH_FIXED_RATIO_CLK_SET(pll3_clk, main_clk, 1, 1); |
| SH_FIXED_RATIO_CLK_SET(qspi_clk, pll1_clk, 1, 1); |
| |
| /* fixed ratio clock */ |
| SH_FIXED_RATIO_CLK_SET(extal_div2_clk, extal_clk, 1, 2); |
| SH_FIXED_RATIO_CLK_SET(cp_clk, extal_clk, 1, 2); |
| |
| SH_FIXED_RATIO_CLK_SET(pll1_div2_clk, pll1_clk, 1, 2); |
| SH_FIXED_RATIO_CLK_SET(hp_clk, pll1_clk, 1, 12); |
| SH_FIXED_RATIO_CLK_SET(p_clk, pll1_clk, 1, 24); |
| SH_FIXED_RATIO_CLK_SET(rclk_clk, pll1_clk, 1, (48 * 1024)); |
| SH_FIXED_RATIO_CLK_SET(mp_clk, pll1_div2_clk, 1, 15); |
| SH_FIXED_RATIO_CLK_SET(zg_clk, pll1_clk, 1, 3); |
| SH_FIXED_RATIO_CLK_SET(zx_clk, pll1_clk, 1, 3); |
| SH_FIXED_RATIO_CLK_SET(zs_clk, pll1_clk, 1, 6); |
| |
| static struct clk *main_clks[] = { |
| &extal_clk, |
| &extal_div2_clk, |
| &main_clk, |
| &pll1_clk, |
| &pll1_div2_clk, |
| &pll3_clk, |
| &hp_clk, |
| &p_clk, |
| &qspi_clk, |
| &rclk_clk, |
| &mp_clk, |
| &cp_clk, |
| &zg_clk, |
| &zx_clk, |
| &zs_clk, |
| }; |
| |
| /* SDHI (DIV4) clock */ |
| static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18, 24, 0, 36, 48, 10 }; |
| |
| 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_SDH, DIV4_SD0, |
| DIV4_NR |
| }; |
| |
| static struct clk div4_clks[DIV4_NR] = { |
| [DIV4_SDH] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 8, 0x0dff, CLK_ENABLE_ON_INIT), |
| [DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1df0, CLK_ENABLE_ON_INIT), |
| }; |
| |
| /* DIV6 clocks */ |
| enum { |
| DIV6_SD1, DIV6_SD2, |
| DIV6_NR |
| }; |
| |
| static struct clk div6_clks[DIV6_NR] = { |
| [DIV6_SD1] = SH_CLK_DIV6(&pll1_div2_clk, SD1CKCR, 0), |
| [DIV6_SD2] = SH_CLK_DIV6(&pll1_div2_clk, SD2CKCR, 0), |
| }; |
| |
| /* MSTP */ |
| enum { |
| MSTP1108, MSTP1107, MSTP1106, |
| MSTP931, MSTP930, MSTP929, MSTP928, MSTP927, MSTP925, |
| MSTP917, |
| MSTP815, MSTP814, |
| MSTP813, |
| MSTP811, MSTP810, MSTP809, |
| MSTP726, MSTP724, MSTP723, MSTP721, MSTP720, |
| MSTP719, MSTP718, MSTP715, MSTP714, |
| MSTP522, |
| MSTP314, MSTP312, MSTP311, |
| MSTP216, MSTP207, MSTP206, |
| MSTP204, MSTP203, MSTP202, |
| MSTP124, |
| MSTP_NR |
| }; |
| |
| static struct clk mstp_clks[MSTP_NR] = { |
| [MSTP1108] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR11, 8, MSTPSR11, 0), /* SCIFA5 */ |
| [MSTP1107] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR11, 7, MSTPSR11, 0), /* SCIFA4 */ |
| [MSTP1106] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR11, 6, MSTPSR11, 0), /* SCIFA3 */ |
| [MSTP931] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 31, MSTPSR9, 0), /* I2C0 */ |
| [MSTP930] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 30, MSTPSR9, 0), /* I2C1 */ |
| [MSTP929] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 29, MSTPSR9, 0), /* I2C2 */ |
| [MSTP928] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 28, MSTPSR9, 0), /* I2C3 */ |
| [MSTP927] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 27, MSTPSR9, 0), /* I2C4 */ |
| [MSTP925] = SH_CLK_MSTP32_STS(&hp_clk, SMSTPCR9, 25, MSTPSR9, 0), /* I2C5 */ |
| [MSTP917] = SH_CLK_MSTP32_STS(&qspi_clk, SMSTPCR9, 17, MSTPSR9, 0), /* QSPI */ |
| [MSTP815] = SH_CLK_MSTP32_STS(&zs_clk, SMSTPCR8, 15, MSTPSR8, 0), /* SATA0 */ |
| [MSTP814] = SH_CLK_MSTP32_STS(&zs_clk, SMSTPCR8, 14, MSTPSR8, 0), /* SATA1 */ |
| [MSTP813] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR8, 13, MSTPSR8, 0), /* Ether */ |
| [MSTP811] = SH_CLK_MSTP32_STS(&zg_clk, SMSTPCR8, 11, MSTPSR8, 0), /* VIN0 */ |
| [MSTP810] = SH_CLK_MSTP32_STS(&zg_clk, SMSTPCR8, 10, MSTPSR8, 0), /* VIN1 */ |
| [MSTP809] = SH_CLK_MSTP32_STS(&zg_clk, SMSTPCR8, 9, MSTPSR8, 0), /* VIN2 */ |
| [MSTP726] = SH_CLK_MSTP32_STS(&zx_clk, SMSTPCR7, 26, MSTPSR7, 0), /* LVDS0 */ |
| [MSTP724] = SH_CLK_MSTP32_STS(&zx_clk, SMSTPCR7, 24, MSTPSR7, 0), /* DU0 */ |
| [MSTP723] = SH_CLK_MSTP32_STS(&zx_clk, SMSTPCR7, 23, MSTPSR7, 0), /* DU1 */ |
| [MSTP721] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 21, MSTPSR7, 0), /* SCIF0 */ |
| [MSTP720] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 20, MSTPSR7, 0), /* SCIF1 */ |
| [MSTP719] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 19, MSTPSR7, 0), /* SCIF2 */ |
| [MSTP718] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 18, MSTPSR7, 0), /* SCIF3 */ |
| [MSTP715] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 15, MSTPSR7, 0), /* SCIF4 */ |
| [MSTP714] = SH_CLK_MSTP32_STS(&p_clk, SMSTPCR7, 14, MSTPSR7, 0), /* SCIF5 */ |
| [MSTP522] = SH_CLK_MSTP32_STS(&extal_clk, SMSTPCR5, 22, MSTPSR5, 0), /* Thermal */ |
| [MSTP314] = SH_CLK_MSTP32_STS(&div4_clks[DIV4_SD0], SMSTPCR3, 14, MSTPSR3, 0), /* SDHI0 */ |
| [MSTP312] = SH_CLK_MSTP32_STS(&div6_clks[DIV6_SD1], SMSTPCR3, 12, MSTPSR3, 0), /* SDHI1 */ |
| [MSTP311] = SH_CLK_MSTP32_STS(&div6_clks[DIV6_SD2], SMSTPCR3, 11, MSTPSR3, 0), /* SDHI2 */ |
| [MSTP216] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 16, MSTPSR2, 0), /* SCIFB2 */ |
| [MSTP207] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 7, MSTPSR2, 0), /* SCIFB1 */ |
| [MSTP206] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 6, MSTPSR2, 0), /* SCIFB0 */ |
| [MSTP204] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 4, MSTPSR2, 0), /* SCIFA0 */ |
| [MSTP203] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 3, MSTPSR2, 0), /* SCIFA1 */ |
| [MSTP202] = SH_CLK_MSTP32_STS(&mp_clk, SMSTPCR2, 2, MSTPSR2, 0), /* SCIFA2 */ |
| [MSTP124] = SH_CLK_MSTP32_STS(&rclk_clk, SMSTPCR1, 24, MSTPSR1, 0), /* CMT0 */ |
| }; |
| |
| static struct clk_lookup lookups[] = { |
| |
| /* main clocks */ |
| CLKDEV_CON_ID("extal", &extal_clk), |
| CLKDEV_CON_ID("extal_div2", &extal_div2_clk), |
| CLKDEV_CON_ID("main", &main_clk), |
| CLKDEV_CON_ID("pll1", &pll1_clk), |
| CLKDEV_CON_ID("pll1_div2", &pll1_div2_clk), |
| CLKDEV_CON_ID("pll3", &pll3_clk), |
| CLKDEV_CON_ID("zg", &zg_clk), |
| CLKDEV_CON_ID("zs", &zs_clk), |
| CLKDEV_CON_ID("hp", &hp_clk), |
| CLKDEV_CON_ID("p", &p_clk), |
| CLKDEV_CON_ID("qspi", &qspi_clk), |
| CLKDEV_CON_ID("rclk", &rclk_clk), |
| CLKDEV_CON_ID("mp", &mp_clk), |
| CLKDEV_CON_ID("cp", &cp_clk), |
| CLKDEV_CON_ID("peripheral_clk", &hp_clk), |
| |
| /* MSTP */ |
| CLKDEV_ICK_ID("lvds.0", "rcar-du-r8a7791", &mstp_clks[MSTP726]), |
| CLKDEV_ICK_ID("du.0", "rcar-du-r8a7791", &mstp_clks[MSTP724]), |
| CLKDEV_ICK_ID("du.1", "rcar-du-r8a7791", &mstp_clks[MSTP723]), |
| CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */ |
| CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */ |
| CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP206]), /* SCIFB0 */ |
| CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP207]), /* SCIFB1 */ |
| CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP216]), /* SCIFB2 */ |
| CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP202]), /* SCIFA2 */ |
| CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP721]), /* SCIF0 */ |
| CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP720]), /* SCIF1 */ |
| CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP719]), /* SCIF2 */ |
| CLKDEV_DEV_ID("sh-sci.9", &mstp_clks[MSTP718]), /* SCIF3 */ |
| CLKDEV_DEV_ID("sh-sci.10", &mstp_clks[MSTP715]), /* SCIF4 */ |
| CLKDEV_DEV_ID("sh-sci.11", &mstp_clks[MSTP714]), /* SCIF5 */ |
| CLKDEV_DEV_ID("sh-sci.12", &mstp_clks[MSTP1106]), /* SCIFA3 */ |
| CLKDEV_DEV_ID("sh-sci.13", &mstp_clks[MSTP1107]), /* SCIFA4 */ |
| CLKDEV_DEV_ID("sh-sci.14", &mstp_clks[MSTP1108]), /* SCIFA5 */ |
| CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), |
| CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP312]), |
| CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP311]), |
| CLKDEV_ICK_ID("fck", "sh-cmt-48-gen2.0", &mstp_clks[MSTP124]), |
| CLKDEV_DEV_ID("qspi.0", &mstp_clks[MSTP917]), |
| CLKDEV_DEV_ID("rcar_thermal", &mstp_clks[MSTP522]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.0", &mstp_clks[MSTP931]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.1", &mstp_clks[MSTP930]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.2", &mstp_clks[MSTP929]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.3", &mstp_clks[MSTP928]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.4", &mstp_clks[MSTP927]), |
| CLKDEV_DEV_ID("i2c-rcar_gen2.5", &mstp_clks[MSTP925]), |
| CLKDEV_DEV_ID("r8a7791-ether", &mstp_clks[MSTP813]), /* Ether */ |
| CLKDEV_DEV_ID("r8a7791-vin.0", &mstp_clks[MSTP811]), |
| CLKDEV_DEV_ID("r8a7791-vin.1", &mstp_clks[MSTP810]), |
| CLKDEV_DEV_ID("r8a7791-vin.2", &mstp_clks[MSTP809]), |
| CLKDEV_DEV_ID("sata-r8a7791.0", &mstp_clks[MSTP815]), |
| CLKDEV_DEV_ID("sata-r8a7791.1", &mstp_clks[MSTP814]), |
| }; |
| |
| #define R8A7791_CLOCK_ROOT(e, m, p0, p1, p30, p31) \ |
| extal_clk.rate = e * 1000 * 1000; \ |
| main_clk.parent = m; \ |
| SH_CLK_SET_RATIO(&pll1_clk_ratio, p1 / 2, 1); \ |
| if (mode & MD(19)) \ |
| SH_CLK_SET_RATIO(&pll3_clk_ratio, p31, 1); \ |
| else \ |
| SH_CLK_SET_RATIO(&pll3_clk_ratio, p30, 1) |
| |
| |
| void __init r8a7791_clock_init(void) |
| { |
| u32 mode = rcar_gen2_read_mode_pins(); |
| int k, ret = 0; |
| |
| switch (mode & (MD(14) | MD(13))) { |
| case 0: |
| R8A7791_CLOCK_ROOT(15, &extal_clk, 172, 208, 106, 88); |
| break; |
| case MD(13): |
| R8A7791_CLOCK_ROOT(20, &extal_clk, 130, 156, 80, 66); |
| break; |
| case MD(14): |
| R8A7791_CLOCK_ROOT(26, &extal_div2_clk, 200, 240, 122, 102); |
| break; |
| case MD(13) | MD(14): |
| R8A7791_CLOCK_ROOT(30, &extal_div2_clk, 172, 208, 106, 88); |
| break; |
| } |
| |
| if ((mode & (MD(3) | MD(2) | MD(1))) == MD(2)) |
| SH_CLK_SET_RATIO(&qspi_clk_ratio, 1, 16); |
| else |
| SH_CLK_SET_RATIO(&qspi_clk_ratio, 1, 20); |
| |
| 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_div6_register(div6_clks, DIV6_NR); |
| |
| if (!ret) |
| ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); |
| |
| clkdev_add_table(lookups, ARRAY_SIZE(lookups)); |
| |
| if (!ret) |
| shmobile_clk_init(); |
| else |
| goto epanic; |
| |
| return; |
| |
| epanic: |
| panic("failed to setup r8a7791 clocks\n"); |
| } |