diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt7981-apmixed.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt7981-apmixed.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt7981-apmixed.c b/drivers/clk/mediatek/clk-mt7981-apmixed.c new file mode 100644 index 0000000000..98739877f4 --- /dev/null +++ b/drivers/clk/mediatek/clk-mt7981-apmixed.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2021 MediaTek Inc. + * Author: Sam Shih <sam.shih@mediatek.com> + * Author: Wenzhen Yu <wenzhen.yu@mediatek.com> + * Author: Jianhui Zhao <zhaojh329@gmail.com> + * Author: Daniel Golle <daniel@makrotopia.org> + */ + +#include <linux/clk-provider.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> + +#include "clk-gate.h" +#include "clk-mtk.h" +#include "clk-mux.h" +#include "clk-pll.h" + +#include <dt-bindings/clock/mediatek,mt7981-clk.h> +#include <linux/clk.h> + +#define MT7981_PLL_FMAX (2500UL * MHZ) +#define CON0_MT7981_RST_BAR BIT(27) + +#define PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \ + _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \ + _div_table, _parent_name) \ + { \ + .id = _id, .name = _name, .reg = _reg, .pwr_reg = _pwr_reg, \ + .en_mask = _en_mask, .flags = _flags, \ + .rst_bar_mask = CON0_MT7981_RST_BAR, .fmax = MT7981_PLL_FMAX, \ + .pcwbits = _pcwbits, .pd_reg = _pd_reg, .pd_shift = _pd_shift, \ + .tuner_reg = _tuner_reg, .pcw_reg = _pcw_reg, \ + .pcw_shift = _pcw_shift, .div_table = _div_table, \ + .parent_name = _parent_name, \ + } + +#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, _pd_reg, \ + _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift) \ + PLL_xtal(_id, _name, _reg, _pwr_reg, _en_mask, _flags, _pcwbits, \ + _pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, NULL, \ + "clkxtal") + +static const struct mtk_pll_data plls[] = { + PLL(CLK_APMIXED_ARMPLL, "armpll", 0x0200, 0x020C, 0x00000001, PLL_AO, + 32, 0x0200, 4, 0, 0x0204, 0), + PLL(CLK_APMIXED_NET2PLL, "net2pll", 0x0210, 0x021C, 0x00000001, 0, 32, + 0x0210, 4, 0, 0x0214, 0), + PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0220, 0x022C, 0x00000001, 0, 32, + 0x0220, 4, 0, 0x0224, 0), + PLL(CLK_APMIXED_SGMPLL, "sgmpll", 0x0230, 0x023C, 0x00000001, 0, 32, + 0x0230, 4, 0, 0x0234, 0), + PLL(CLK_APMIXED_WEDMCUPLL, "wedmcupll", 0x0240, 0x024C, 0x00000001, 0, 32, + 0x0240, 4, 0, 0x0244, 0), + PLL(CLK_APMIXED_NET1PLL, "net1pll", 0x0250, 0x025C, 0x00000001, 0, 32, + 0x0250, 4, 0, 0x0254, 0), + PLL(CLK_APMIXED_MPLL, "mpll", 0x0260, 0x0270, 0x00000001, 0, 32, + 0x0260, 4, 0, 0x0264, 0), + PLL(CLK_APMIXED_APLL2, "apll2", 0x0278, 0x0288, 0x00000001, 0, 32, + 0x0278, 4, 0, 0x027C, 0), +}; + +static const struct of_device_id of_match_clk_mt7981_apmixed[] = { + { .compatible = "mediatek,mt7981-apmixedsys", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_match_clk_mt7981_apmixed); + +static int clk_mt7981_apmixed_probe(struct platform_device *pdev) +{ + struct clk_hw_onecell_data *clk_data; + struct device_node *node = pdev->dev.of_node; + int r; + + clk_data = mtk_alloc_clk_data(ARRAY_SIZE(plls)); + if (!clk_data) + return -ENOMEM; + + mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data); + + r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); + if (r) { + pr_err("%s(): could not register clock provider: %d\n", + __func__, r); + goto free_apmixed_data; + } + return r; + +free_apmixed_data: + mtk_free_clk_data(clk_data); + return r; +} + +static struct platform_driver clk_mt7981_apmixed_drv = { + .probe = clk_mt7981_apmixed_probe, + .driver = { + .name = "clk-mt7981-apmixed", + .of_match_table = of_match_clk_mt7981_apmixed, + }, +}; +builtin_platform_driver(clk_mt7981_apmixed_drv); +MODULE_LICENSE("GPL"); |