| /* |
| * Copyright (C) 2014 Broadcom Corporation |
| * |
| * 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. |
| * |
| * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| * kind, whether express or implied; without even the implied warranty |
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/err.h> |
| #include <linux/clk-provider.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/clkdev.h> |
| #include <linux/of_address.h> |
| #include <linux/delay.h> |
| |
| #include <dt-bindings/clock/bcm-cygnus.h> |
| #include "clk-iproc.h" |
| |
| #define REG_VAL(o, s, w) { .offset = o, .shift = s, .width = w, } |
| |
| #define AON_VAL(o, pw, ps, is) { .offset = o, .pwr_width = pw, \ |
| .pwr_shift = ps, .iso_shift = is } |
| |
| #define SW_CTRL_VAL(o, s) { .offset = o, .shift = s, } |
| |
| #define ASIU_DIV_VAL(o, es, hs, hw, ls, lw) \ |
| { .offset = o, .en_shift = es, .high_shift = hs, \ |
| .high_width = hw, .low_shift = ls, .low_width = lw } |
| |
| #define RESET_VAL(o, rs, prs) { .offset = o, .reset_shift = rs, \ |
| .p_reset_shift = prs } |
| |
| #define DF_VAL(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\ |
| .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \ |
| .ka_width = kaw } |
| |
| #define VCO_CTRL_VAL(uo, lo) { .u_offset = uo, .l_offset = lo } |
| |
| #define ENABLE_VAL(o, es, hs, bs) { .offset = o, .enable_shift = es, \ |
| .hold_shift = hs, .bypass_shift = bs } |
| |
| #define ASIU_GATE_VAL(o, es) { .offset = o, .en_shift = es } |
| |
| static void __init cygnus_armpll_init(struct device_node *node) |
| { |
| iproc_armpll_setup(node); |
| } |
| CLK_OF_DECLARE(cygnus_armpll, "brcm,cygnus-armpll", cygnus_armpll_init); |
| |
| static const struct iproc_pll_ctrl genpll = { |
| .flags = IPROC_CLK_AON | IPROC_CLK_PLL_HAS_NDIV_FRAC | |
| IPROC_CLK_PLL_NEEDS_SW_CFG, |
| .aon = AON_VAL(0x0, 2, 1, 0), |
| .reset = RESET_VAL(0x0, 11, 10), |
| .dig_filter = DF_VAL(0x0, 4, 3, 0, 4, 7, 3), |
| .sw_ctrl = SW_CTRL_VAL(0x10, 31), |
| .ndiv_int = REG_VAL(0x10, 20, 10), |
| .ndiv_frac = REG_VAL(0x10, 0, 20), |
| .pdiv = REG_VAL(0x14, 0, 4), |
| .vco_ctrl = VCO_CTRL_VAL(0x18, 0x1c), |
| .status = REG_VAL(0x28, 12, 1), |
| }; |
| |
| static const struct iproc_clk_ctrl genpll_clk[] = { |
| [BCM_CYGNUS_GENPLL_AXI21_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_AXI21_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 6, 0, 12), |
| .mdiv = REG_VAL(0x20, 0, 8), |
| }, |
| [BCM_CYGNUS_GENPLL_250MHZ_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_250MHZ_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 7, 1, 13), |
| .mdiv = REG_VAL(0x20, 10, 8), |
| }, |
| [BCM_CYGNUS_GENPLL_IHOST_SYS_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_IHOST_SYS_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 8, 2, 14), |
| .mdiv = REG_VAL(0x20, 20, 8), |
| }, |
| [BCM_CYGNUS_GENPLL_ENET_SW_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_ENET_SW_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 9, 3, 15), |
| .mdiv = REG_VAL(0x24, 0, 8), |
| }, |
| [BCM_CYGNUS_GENPLL_AUDIO_125_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_AUDIO_125_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 10, 4, 16), |
| .mdiv = REG_VAL(0x24, 10, 8), |
| }, |
| [BCM_CYGNUS_GENPLL_CAN_CLK] = { |
| .channel = BCM_CYGNUS_GENPLL_CAN_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x4, 11, 5, 17), |
| .mdiv = REG_VAL(0x24, 20, 8), |
| }, |
| }; |
| |
| static void __init cygnus_genpll_clk_init(struct device_node *node) |
| { |
| iproc_pll_clk_setup(node, &genpll, NULL, 0, genpll_clk, |
| ARRAY_SIZE(genpll_clk)); |
| } |
| CLK_OF_DECLARE(cygnus_genpll, "brcm,cygnus-genpll", cygnus_genpll_clk_init); |
| |
| static const struct iproc_pll_ctrl lcpll0 = { |
| .flags = IPROC_CLK_AON | IPROC_CLK_PLL_NEEDS_SW_CFG, |
| .aon = AON_VAL(0x0, 2, 5, 4), |
| .reset = RESET_VAL(0x0, 31, 30), |
| .dig_filter = DF_VAL(0x0, 27, 3, 23, 4, 19, 4), |
| .sw_ctrl = SW_CTRL_VAL(0x4, 31), |
| .ndiv_int = REG_VAL(0x4, 16, 10), |
| .pdiv = REG_VAL(0x4, 26, 4), |
| .vco_ctrl = VCO_CTRL_VAL(0x10, 0x14), |
| .status = REG_VAL(0x18, 12, 1), |
| }; |
| |
| static const struct iproc_clk_ctrl lcpll0_clk[] = { |
| [BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK] = { |
| .channel = BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 7, 1, 13), |
| .mdiv = REG_VAL(0x8, 0, 8), |
| }, |
| [BCM_CYGNUS_LCPLL0_DDR_PHY_CLK] = { |
| .channel = BCM_CYGNUS_LCPLL0_DDR_PHY_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 8, 2, 14), |
| .mdiv = REG_VAL(0x8, 10, 8), |
| }, |
| [BCM_CYGNUS_LCPLL0_SDIO_CLK] = { |
| .channel = BCM_CYGNUS_LCPLL0_SDIO_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 9, 3, 15), |
| .mdiv = REG_VAL(0x8, 20, 8), |
| }, |
| [BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK] = { |
| .channel = BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 10, 4, 16), |
| .mdiv = REG_VAL(0xc, 0, 8), |
| }, |
| [BCM_CYGNUS_LCPLL0_SMART_CARD_CLK] = { |
| .channel = BCM_CYGNUS_LCPLL0_SMART_CARD_CLK, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 11, 5, 17), |
| .mdiv = REG_VAL(0xc, 10, 8), |
| }, |
| [BCM_CYGNUS_LCPLL0_CH5_UNUSED] = { |
| .channel = BCM_CYGNUS_LCPLL0_CH5_UNUSED, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x0, 12, 6, 18), |
| .mdiv = REG_VAL(0xc, 20, 8), |
| }, |
| }; |
| |
| static void __init cygnus_lcpll0_clk_init(struct device_node *node) |
| { |
| iproc_pll_clk_setup(node, &lcpll0, NULL, 0, lcpll0_clk, |
| ARRAY_SIZE(lcpll0_clk)); |
| } |
| CLK_OF_DECLARE(cygnus_lcpll0, "brcm,cygnus-lcpll0", cygnus_lcpll0_clk_init); |
| |
| /* |
| * MIPI PLL VCO frequency parameter table |
| */ |
| static const struct iproc_pll_vco_param mipipll_vco_params[] = { |
| /* rate (Hz) ndiv_int ndiv_frac pdiv */ |
| { 750000000UL, 30, 0, 1 }, |
| { 1000000000UL, 40, 0, 1 }, |
| { 1350000000ul, 54, 0, 1 }, |
| { 2000000000UL, 80, 0, 1 }, |
| { 2100000000UL, 84, 0, 1 }, |
| { 2250000000UL, 90, 0, 1 }, |
| { 2500000000UL, 100, 0, 1 }, |
| { 2700000000UL, 54, 0, 0 }, |
| { 2975000000UL, 119, 0, 1 }, |
| { 3100000000UL, 124, 0, 1 }, |
| { 3150000000UL, 126, 0, 1 }, |
| }; |
| |
| static const struct iproc_pll_ctrl mipipll = { |
| .flags = IPROC_CLK_PLL_ASIU | IPROC_CLK_PLL_HAS_NDIV_FRAC | |
| IPROC_CLK_NEEDS_READ_BACK, |
| .aon = AON_VAL(0x0, 4, 17, 16), |
| .asiu = ASIU_GATE_VAL(0x0, 3), |
| .reset = RESET_VAL(0x0, 11, 10), |
| .dig_filter = DF_VAL(0x0, 4, 3, 0, 4, 7, 4), |
| .ndiv_int = REG_VAL(0x10, 20, 10), |
| .ndiv_frac = REG_VAL(0x10, 0, 20), |
| .pdiv = REG_VAL(0x14, 0, 4), |
| .vco_ctrl = VCO_CTRL_VAL(0x18, 0x1c), |
| .status = REG_VAL(0x28, 12, 1), |
| }; |
| |
| static const struct iproc_clk_ctrl mipipll_clk[] = { |
| [BCM_CYGNUS_MIPIPLL_CH0_UNUSED] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH0_UNUSED, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 12, 6, 18), |
| .mdiv = REG_VAL(0x20, 0, 8), |
| }, |
| [BCM_CYGNUS_MIPIPLL_CH1_LCD] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH1_LCD, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 13, 7, 19), |
| .mdiv = REG_VAL(0x20, 10, 8), |
| }, |
| [BCM_CYGNUS_MIPIPLL_CH2_V3D] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH2_V3D, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 14, 8, 20), |
| .mdiv = REG_VAL(0x20, 20, 8), |
| }, |
| [BCM_CYGNUS_MIPIPLL_CH3_UNUSED] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH3_UNUSED, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 15, 9, 21), |
| .mdiv = REG_VAL(0x24, 0, 8), |
| }, |
| [BCM_CYGNUS_MIPIPLL_CH4_UNUSED] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH4_UNUSED, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 16, 10, 22), |
| .mdiv = REG_VAL(0x24, 10, 8), |
| }, |
| [BCM_CYGNUS_MIPIPLL_CH5_UNUSED] = { |
| .channel = BCM_CYGNUS_MIPIPLL_CH5_UNUSED, |
| .flags = IPROC_CLK_NEEDS_READ_BACK, |
| .enable = ENABLE_VAL(0x4, 17, 11, 23), |
| .mdiv = REG_VAL(0x24, 20, 8), |
| }, |
| }; |
| |
| static void __init cygnus_mipipll_clk_init(struct device_node *node) |
| { |
| iproc_pll_clk_setup(node, &mipipll, mipipll_vco_params, |
| ARRAY_SIZE(mipipll_vco_params), mipipll_clk, |
| ARRAY_SIZE(mipipll_clk)); |
| } |
| CLK_OF_DECLARE(cygnus_mipipll, "brcm,cygnus-mipipll", cygnus_mipipll_clk_init); |
| |
| static const struct iproc_asiu_div asiu_div[] = { |
| [BCM_CYGNUS_ASIU_KEYPAD_CLK] = ASIU_DIV_VAL(0x0, 31, 16, 10, 0, 10), |
| [BCM_CYGNUS_ASIU_ADC_CLK] = ASIU_DIV_VAL(0x4, 31, 16, 10, 0, 10), |
| [BCM_CYGNUS_ASIU_PWM_CLK] = ASIU_DIV_VAL(0x8, 31, 16, 10, 0, 10), |
| }; |
| |
| static const struct iproc_asiu_gate asiu_gate[] = { |
| [BCM_CYGNUS_ASIU_KEYPAD_CLK] = ASIU_GATE_VAL(0x0, 7), |
| [BCM_CYGNUS_ASIU_ADC_CLK] = ASIU_GATE_VAL(0x0, 9), |
| [BCM_CYGNUS_ASIU_PWM_CLK] = ASIU_GATE_VAL(IPROC_CLK_INVALID_OFFSET, 0), |
| }; |
| |
| static void __init cygnus_asiu_init(struct device_node *node) |
| { |
| iproc_asiu_setup(node, asiu_div, asiu_gate, ARRAY_SIZE(asiu_div)); |
| } |
| CLK_OF_DECLARE(cygnus_asiu_clk, "brcm,cygnus-asiu-clk", cygnus_asiu_init); |
| |
| /* |
| * AUDIO PLL VCO frequency parameter table |
| * |
| * PLL output frequency = ((ndiv_int + ndiv_frac / 2^20) * |
| * (parent clock rate / pdiv) |
| * |
| * On Cygnus, parent is the 25MHz oscillator |
| */ |
| static const struct iproc_pll_vco_param audiopll_vco_params[] = { |
| /* rate (Hz) ndiv_int ndiv_frac pdiv */ |
| { 1354750204UL, 54, 199238, 1 }, |
| { 1769470191UL, 70, 816639, 1 }, |
| }; |
| |
| static const struct iproc_pll_ctrl audiopll = { |
| .flags = IPROC_CLK_PLL_NEEDS_SW_CFG | IPROC_CLK_PLL_HAS_NDIV_FRAC | |
| IPROC_CLK_PLL_USER_MODE_ON | IPROC_CLK_PLL_RESET_ACTIVE_LOW, |
| .reset = RESET_VAL(0x5c, 0, 1), |
| .dig_filter = DF_VAL(0x48, 0, 3, 6, 4, 3, 3), |
| .sw_ctrl = SW_CTRL_VAL(0x4, 0), |
| .ndiv_int = REG_VAL(0x8, 0, 10), |
| .ndiv_frac = REG_VAL(0x8, 10, 20), |
| .pdiv = REG_VAL(0x44, 0, 4), |
| .vco_ctrl = VCO_CTRL_VAL(0x0c, 0x10), |
| .status = REG_VAL(0x54, 0, 1), |
| .macro_mode = REG_VAL(0x0, 0, 3), |
| }; |
| |
| static const struct iproc_clk_ctrl audiopll_clk[] = { |
| [BCM_CYGNUS_AUDIOPLL_CH0] = { |
| .channel = BCM_CYGNUS_AUDIOPLL_CH0, |
| .flags = IPROC_CLK_AON | |
| IPROC_CLK_MCLK_DIV_BY_2, |
| .enable = ENABLE_VAL(0x14, 8, 10, 9), |
| .mdiv = REG_VAL(0x14, 0, 8), |
| }, |
| [BCM_CYGNUS_AUDIOPLL_CH1] = { |
| .channel = BCM_CYGNUS_AUDIOPLL_CH1, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x18, 8, 10, 9), |
| .mdiv = REG_VAL(0x18, 0, 8), |
| }, |
| [BCM_CYGNUS_AUDIOPLL_CH2] = { |
| .channel = BCM_CYGNUS_AUDIOPLL_CH2, |
| .flags = IPROC_CLK_AON, |
| .enable = ENABLE_VAL(0x1c, 8, 10, 9), |
| .mdiv = REG_VAL(0x1c, 0, 8), |
| }, |
| }; |
| |
| static void __init cygnus_audiopll_clk_init(struct device_node *node) |
| { |
| iproc_pll_clk_setup(node, &audiopll, audiopll_vco_params, |
| ARRAY_SIZE(audiopll_vco_params), audiopll_clk, |
| ARRAY_SIZE(audiopll_clk)); |
| } |
| CLK_OF_DECLARE(cygnus_audiopll, "brcm,cygnus-audiopll", |
| cygnus_audiopll_clk_init); |
