drivers/clk/bcm/clk-nsp.c

   1 /*
   2  * Copyright (C) 2015 Broadcom Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/err.h>
  16 #include <linux/clk-provider.h>
  17 #include <linux/io.h>
  18 #include <linux/of.h>
  19 #include <linux/of_address.h>
  20
  21 #include <dt-bindings/clock/bcm-nsp.h>
  22 #include "clk-iproc.h"
  23
  24 #define REG_VAL(o, s, w) { .offset = o, .shift = s, .width = w, }
  25
  26 #define AON_VAL(o, pw, ps, is) { .offset = o, .pwr_width = pw, \
  27         .pwr_shift = ps, .iso_shift = is }
  28
  29 #define RESET_VAL(o, rs, prs) { .offset = o, .reset_shift = rs, \
  30         .p_reset_shift = prs }
  31
  32 #define DF_VAL(o, kis, kiw, kps, kpw, kas, kaw) { .offset = o, .ki_shift = kis,\
  33         .ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas,    \
  34         .ka_width = kaw }
  35
  36 #define ENABLE_VAL(o, es, hs, bs) { .offset = o, .enable_shift = es, \
  37         .hold_shift = hs, .bypass_shift = bs }
  38
  39 static void __init nsp_armpll_init(struct device_node *node)
  40 {
  41         iproc_armpll_setup(node);
  42 }
  43 CLK_OF_DECLARE(nsp_armpll, "brcm,nsp-armpll", nsp_armpll_init);
  44
  45 static const struct iproc_pll_ctrl genpll = {
  46         .flags = IPROC_CLK_PLL_HAS_NDIV_FRAC | IPROC_CLK_EMBED_PWRCTRL,
  47         .aon = AON_VAL(0x0, 1, 12, 0),
  48         .reset = RESET_VAL(0x0, 11, 10),
  49         .dig_filter = DF_VAL(0x0, 4, 3, 0, 4, 7, 3),
  50         .ndiv_int = REG_VAL(0x14, 20, 10),
  51         .ndiv_frac = REG_VAL(0x14, 0, 20),
  52         .pdiv = REG_VAL(0x18, 24, 3),
  53         .status = REG_VAL(0x20, 12, 1),
  54 };
  55
  56 static const struct iproc_clk_ctrl genpll_clk[] = {
  57         [BCM_NSP_GENPLL_PHY_CLK] = {
  58                 .channel = BCM_NSP_GENPLL_PHY_CLK,
  59                 .flags = IPROC_CLK_AON,
  60                 .enable = ENABLE_VAL(0x4, 12, 6, 18),
  61                 .mdiv = REG_VAL(0x18, 16, 8),
  62         },
  63         [BCM_NSP_GENPLL_ENET_SW_CLK] = {
  64                 .channel = BCM_NSP_GENPLL_ENET_SW_CLK,
  65                 .flags = IPROC_CLK_AON,
  66                 .enable = ENABLE_VAL(0x4, 13, 7, 19),
  67                 .mdiv = REG_VAL(0x18, 8, 8),
  68         },
  69         [BCM_NSP_GENPLL_USB_PHY_REF_CLK] = {
  70                 .channel = BCM_NSP_GENPLL_USB_PHY_REF_CLK,
  71                 .flags = IPROC_CLK_AON,
  72                 .enable = ENABLE_VAL(0x4, 14, 8, 20),
  73                 .mdiv = REG_VAL(0x18, 0, 8),
  74         },
  75         [BCM_NSP_GENPLL_IPROCFAST_CLK] = {
  76                 .channel = BCM_NSP_GENPLL_IPROCFAST_CLK,
  77                 .flags = IPROC_CLK_AON,
  78                 .enable = ENABLE_VAL(0x4, 15, 9, 21),
  79                 .mdiv = REG_VAL(0x1c, 16, 8),
  80         },
  81         [BCM_NSP_GENPLL_SATA1_CLK] = {
  82                 .channel = BCM_NSP_GENPLL_SATA1_CLK,
  83                 .flags = IPROC_CLK_AON,
  84                 .enable = ENABLE_VAL(0x4, 16, 10, 22),
  85                 .mdiv = REG_VAL(0x1c, 8, 8),
  86         },
  87         [BCM_NSP_GENPLL_SATA2_CLK] = {
  88                 .channel = BCM_NSP_GENPLL_SATA2_CLK,
  89                 .flags = IPROC_CLK_AON,
  90                 .enable = ENABLE_VAL(0x4, 17, 11, 23),
  91                 .mdiv = REG_VAL(0x1c, 0, 8),
  92         },
  93 };
  94
  95 static void __init nsp_genpll_clk_init(struct device_node *node)
  96 {
  97         iproc_pll_clk_setup(node, &genpll, NULL, 0, genpll_clk,
  98                             ARRAY_SIZE(genpll_clk));
  99 }
 100 CLK_OF_DECLARE(nsp_genpll_clk, "brcm,nsp-genpll", nsp_genpll_clk_init);
 101
 102 static const struct iproc_pll_ctrl lcpll0 = {
 103         .flags = IPROC_CLK_PLL_HAS_NDIV_FRAC | IPROC_CLK_EMBED_PWRCTRL,
 104         .aon = AON_VAL(0x0, 1, 24, 0),
 105         .reset = RESET_VAL(0x0, 23, 22),
 106         .dig_filter = DF_VAL(0x0, 16, 3, 12, 4, 19, 4),
 107         .ndiv_int = REG_VAL(0x4, 20, 8),
 108         .ndiv_frac = REG_VAL(0x4, 0, 20),
 109         .pdiv = REG_VAL(0x4, 28, 3),
 110         .status = REG_VAL(0x10, 12, 1),
 111 };
 112
 113 static const struct iproc_clk_ctrl lcpll0_clk[] = {
 114         [BCM_NSP_LCPLL0_PCIE_PHY_REF_CLK] = {
 115                 .channel = BCM_NSP_LCPLL0_PCIE_PHY_REF_CLK,
 116                 .flags = IPROC_CLK_AON,
 117                 .enable = ENABLE_VAL(0x0, 6, 3, 9),
 118                 .mdiv = REG_VAL(0x8, 24, 8),
 119         },
 120         [BCM_NSP_LCPLL0_SDIO_CLK] = {
 121                 .channel = BCM_NSP_LCPLL0_SDIO_CLK,
 122                 .flags = IPROC_CLK_AON,
 123                 .enable = ENABLE_VAL(0x0, 7, 4, 10),
 124                 .mdiv = REG_VAL(0x8, 16, 8),
 125         },
 126         [BCM_NSP_LCPLL0_DDR_PHY_CLK] = {
 127                 .channel = BCM_NSP_LCPLL0_DDR_PHY_CLK,
 128                 .flags = IPROC_CLK_AON,
 129                 .enable = ENABLE_VAL(0x0, 8, 5, 11),
 130                 .mdiv = REG_VAL(0x8, 8, 8),
 131         },
 132 };
 133
 134 static void __init nsp_lcpll0_clk_init(struct device_node *node)
 135 {
 136         iproc_pll_clk_setup(node, &lcpll0, NULL, 0, lcpll0_clk,
 137                             ARRAY_SIZE(lcpll0_clk));
 138 }
 139 CLK_OF_DECLARE(nsp_lcpll0_clk, "brcm,nsp-lcpll0", nsp_lcpll0_clk_init);