diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt7981-eth.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt7981-eth.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt7981-eth.c b/drivers/clk/mediatek/clk-mt7981-eth.c new file mode 100644 index 000000000000..773350911be2 --- /dev/null +++ b/drivers/clk/mediatek/clk-mt7981-eth.c @@ -0,0 +1,118 @@ +// 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/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include "clk-mtk.h" +#include "clk-gate.h" + +#include <dt-bindings/clock/mediatek,mt7981-clk.h> + +static const struct mtk_gate_regs sgmii0_cg_regs = { + .set_ofs = 0xE4, + .clr_ofs = 0xE4, + .sta_ofs = 0xE4, +}; + +#define GATE_SGMII0(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &sgmii0_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_no_setclr_inv, \ + } + +static const struct mtk_gate sgmii0_clks[] __initconst = { + GATE_SGMII0(CLK_SGM0_TX_EN, "sgm0_tx_en", "usb_tx250m", 2), + GATE_SGMII0(CLK_SGM0_RX_EN, "sgm0_rx_en", "usb_eq_rx250m", 3), + GATE_SGMII0(CLK_SGM0_CK0_EN, "sgm0_ck0_en", "usb_ln0", 4), + GATE_SGMII0(CLK_SGM0_CDR_CK0_EN, "sgm0_cdr_ck0_en", "usb_cdr", 5), +}; + +static const struct mtk_gate_regs sgmii1_cg_regs = { + .set_ofs = 0xE4, + .clr_ofs = 0xE4, + .sta_ofs = 0xE4, +}; + +#define GATE_SGMII1(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &sgmii1_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_no_setclr_inv, \ + } + +static const struct mtk_gate sgmii1_clks[] __initconst = { + GATE_SGMII1(CLK_SGM1_TX_EN, "sgm1_tx_en", "usb_tx250m", 2), + GATE_SGMII1(CLK_SGM1_RX_EN, "sgm1_rx_en", "usb_eq_rx250m", 3), + GATE_SGMII1(CLK_SGM1_CK1_EN, "sgm1_ck1_en", "usb_ln0", 4), + GATE_SGMII1(CLK_SGM1_CDR_CK1_EN, "sgm1_cdr_ck1_en", "usb_cdr", 5), +}; + +static const struct mtk_gate_regs eth_cg_regs = { + .set_ofs = 0x30, + .clr_ofs = 0x30, + .sta_ofs = 0x30, +}; + +#define GATE_ETH(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = ð_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_no_setclr_inv, \ + } + +static const struct mtk_gate eth_clks[] __initconst = { + GATE_ETH(CLK_ETH_FE_EN, "eth_fe_en", "netsys_2x", 6), + GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "sgm_325m", 7), + GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "sgm_325m", 8), + GATE_ETH(CLK_ETH_WOCPU0_EN, "eth_wocpu0_en", "netsys_wed_mcu", 15), +}; + +static const struct mtk_clk_desc eth_desc = { + .clks = eth_clks, + .num_clks = ARRAY_SIZE(eth_clks), +}; + +static const struct mtk_clk_desc sgmii0_desc = { + .clks = sgmii0_clks, + .num_clks = ARRAY_SIZE(sgmii0_clks), +}; + +static const struct mtk_clk_desc sgmii1_desc = { + .clks = sgmii1_clks, + .num_clks = ARRAY_SIZE(sgmii1_clks), +}; + +static const struct of_device_id of_match_clk_mt7981_eth[] = { + { .compatible = "mediatek,mt7981-ethsys", .data = ð_desc }, + { .compatible = "mediatek,mt7981-sgmiisys_0", .data = &sgmii0_desc }, + { .compatible = "mediatek,mt7981-sgmiisys_1", .data = &sgmii1_desc }, + { /* sentinel */ } +}; + +static struct platform_driver clk_mt7981_eth_drv = { + .probe = mtk_clk_simple_probe, + .remove = mtk_clk_simple_remove, + .driver = { + .name = "clk-mt7981-eth", + .of_match_table = of_match_clk_mt7981_eth, + }, +}; +module_platform_driver(clk_mt7981_eth_drv); +MODULE_LICENSE("GPL v2"); |