101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2019 MediaTek Inc.
|
|
* Author: Wendell Lin <wendell.lin@mediatek.com>
|
|
*/
|
|
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/platform_device.h>
|
|
#include <dt-bindings/clock/mt6779-clk.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "clk-mtk.h"
|
|
#include "clk-gate.h"
|
|
|
|
#define MT_CLKMGR_MODULE_INIT 0
|
|
#define CCF_SUBSYS_DEBUG 1
|
|
|
|
static const struct mtk_gate_regs apu0_cg_regs = {
|
|
.set_ofs = 0x0004,
|
|
.clr_ofs = 0x0008,
|
|
.sta_ofs = 0x0000,
|
|
};
|
|
|
|
#define GATE_APU0(_id, _name, _parent, _shift) { \
|
|
.id = _id, \
|
|
.name = _name, \
|
|
.parent_name = _parent, \
|
|
.regs = &apu0_cg_regs, \
|
|
.shift = _shift, \
|
|
.ops = &mtk_clk_gate_ops_setclr, \
|
|
}
|
|
|
|
static const struct mtk_gate apu0_clks[] = {
|
|
GATE_APU0(CLK_APU0_APU, "apu0_apu", "dsp1_sel", 0),
|
|
GATE_APU0(CLK_APU0_AXI_M, "apu0_axi", "dsp1_sel", 1),
|
|
GATE_APU0(CLK_APU0_JTAG, "apu0_jtag", "dsp1_sel", 2),
|
|
};
|
|
|
|
static const struct of_device_id of_match_clk_mt6779_apu0[] = {
|
|
{ .compatible = "mediatek,mt6779-apu0", },
|
|
{}
|
|
};
|
|
|
|
static int clk_mt6779_apu0_probe(struct platform_device *pdev)
|
|
{
|
|
struct clk_onecell_data *clk_data;
|
|
struct device_node *node = pdev->dev.of_node;
|
|
int ret;
|
|
|
|
clk_data = mtk_alloc_clk_data(CLK_APU0_NR_CLK);
|
|
if (!clk_data) {
|
|
pr_notice("%s(): alloc clk data failed\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
#if CCF_SUBSYS_DEBUG
|
|
pr_info("%s(): clk data number: %d\n", __func__, clk_data->clk_num);
|
|
#endif
|
|
|
|
mtk_clk_register_gates(node, apu0_clks, ARRAY_SIZE(apu0_clks),
|
|
clk_data);
|
|
|
|
ret = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
|
|
|
|
if (ret) {
|
|
pr_notice("%s(): could not register clock provider: %d\n",
|
|
__func__, ret);
|
|
|
|
kfree(clk_data);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver clk_mt6779_apu0_drv = {
|
|
.probe = clk_mt6779_apu0_probe,
|
|
.driver = {
|
|
.name = "clk-mt6779-apu0",
|
|
.of_match_table = of_match_clk_mt6779_apu0,
|
|
},
|
|
};
|
|
|
|
|
|
#if MT_CLKMGR_MODULE_INIT
|
|
|
|
builtin_platform_driver(clk_mt6779_apu0_drv);
|
|
|
|
#else
|
|
|
|
static int __init clk_mt6779_apu0_platform_init(void)
|
|
{
|
|
return platform_driver_register(&clk_mt6779_apu0_drv);
|
|
}
|
|
|
|
arch_initcall_sync(clk_mt6779_apu0_platform_init);
|
|
|
|
#endif /* MT_CLKMGR_MODULE_INIT */
|
|
|