drivers/clk/mediatek/clk-mt8167-mfgcfg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2020 MediaTek Inc.
   4  * Copyright (c) 2020 BayLibre, SAS
   5  * Author: James Liao <jamesjj.liao@mediatek.com>
   6  *         Fabien Parent <fparent@baylibre.com>
   7  */
   8
   9 #include <linux/clk-provider.h>
  10 #include <linux/of.h>
  11 #include <linux/of_address.h>
  12 #include <linux/of_device.h>
  13 #include <linux/platform_device.h>
  14
  15 #include "clk-mtk.h"
  16 #include "clk-gate.h"
  17
  18 #include <dt-bindings/clock/mt8167-clk.h>
  19
  20 static const struct mtk_gate_regs mfg_cg_regs = {
  21         .set_ofs = 0x4,
  22         .clr_ofs = 0x8,
  23         .sta_ofs = 0x0,
  24 };
  25
  26 #define GATE_MFG(_id, _name, _parent, _shift) {         \
  27                 .id = _id,                              \
  28                 .name = _name,                          \
  29                 .parent_name = _parent,                 \
  30                 .regs = &mfg_cg_regs,                   \
  31                 .shift = _shift,                        \
  32                 .ops = &mtk_clk_gate_ops_setclr,        \
  33         }
  34
  35 static const struct mtk_gate mfg_clks[] __initconst = {
  36         GATE_MFG(CLK_MFG_BAXI, "mfg_baxi", "ahb_infra_sel", 0),
  37         GATE_MFG(CLK_MFG_BMEM, "mfg_bmem", "gfmux_emi1x_sel", 1),
  38         GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "mfg_mm", 2),
  39         GATE_MFG(CLK_MFG_B26M, "mfg_b26m", "clk26m_ck", 3),
  40 };
  41
  42 static void __init mtk_mfgcfg_init(struct device_node *node)
  43 {
  44         struct clk_onecell_data *clk_data;
  45         int r;
  46
  47         clk_data = mtk_alloc_clk_data(CLK_MFG_NR_CLK);
  48
  49         mtk_clk_register_gates(node, mfg_clks, ARRAY_SIZE(mfg_clks), clk_data);
  50
  51         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  52
  53         if (r)
  54                 pr_err("%s(): could not register clock provider: %d\n",
  55                         __func__, r);
  56
  57 }
  58 CLK_OF_DECLARE(mtk_mfgcfg, "mediatek,mt8167-mfgcfg", mtk_mfgcfg_init);