Add support for the MT8196 I2C clock controller, which provides clock gate control for I2C. Reviewed-by: Nícolas F. R. A. Prado Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Laura Nao --- drivers/clk/mediatek/Kconfig | 7 ++ drivers/clk/mediatek/Makefile | 1 + .../clk/mediatek/clk-mt8196-imp_iic_wrap.c | 117 ++++++++++++++++++ 3 files changed, 125 insertions(+) create mode 100644 drivers/clk/mediatek/clk-mt8196-imp_iic_wrap.c diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index cd12e7ff3e12..09aeffc9887c 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -1068,6 +1068,13 @@ config COMMON_CLK_MT8196 help This driver supports MediaTek MT8196 basic clocks. +config COMMON_CLK_MT8196_IMP_IIC_WRAP + tristate "Clock driver for MediaTek MT8196 imp_iic_wrap" + depends on COMMON_CLK_MT8196 + default COMMON_CLK_MT8196 + help + This driver supports MediaTek MT8196 i2c clocks. + config COMMON_CLK_MT8196_PEXTPSYS tristate "Clock driver for MediaTek MT8196 pextpsys" depends on COMMON_CLK_MT8196 diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index 21e768f67283..d2d731213af3 100644 --- a/drivers/clk/mediatek/Makefile +++ b/drivers/clk/mediatek/Makefile @@ -163,6 +163,7 @@ obj-$(CONFIG_COMMON_CLK_MT8195_WPESYS) += clk-mt8195-wpe.o obj-$(CONFIG_COMMON_CLK_MT8196) += clk-mt8196-apmixedsys.o clk-mt8196-topckgen.o \ clk-mt8196-topckgen2.o clk-mt8196-vlpckgen.o \ clk-mt8196-peri_ao.o +obj-$(CONFIG_COMMON_CLK_MT8196_IMP_IIC_WRAP) += clk-mt8196-imp_iic_wrap.o obj-$(CONFIG_COMMON_CLK_MT8196_PEXTPSYS) += clk-mt8196-pextp.o obj-$(CONFIG_COMMON_CLK_MT8196_UFSSYS) += clk-mt8196-ufs_ao.o obj-$(CONFIG_COMMON_CLK_MT8365) += clk-mt8365-apmixedsys.o clk-mt8365.o diff --git a/drivers/clk/mediatek/clk-mt8196-imp_iic_wrap.c b/drivers/clk/mediatek/clk-mt8196-imp_iic_wrap.c new file mode 100644 index 000000000000..98db1476e72c --- /dev/null +++ b/drivers/clk/mediatek/clk-mt8196-imp_iic_wrap.c @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2025 MediaTek Inc. + * Guangjie Song + * Copyright (c) 2025 Collabora Ltd. + * Laura Nao + */ +#include +#include +#include +#include +#include + +#include "clk-gate.h" +#include "clk-mtk.h" + +static const struct mtk_gate_regs imp_cg_regs = { + .set_ofs = 0xe08, + .clr_ofs = 0xe04, + .sta_ofs = 0xe00, +}; + +#define GATE_IMP(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &imp_cg_regs, \ + .shift = _shift, \ + .flags = CLK_OPS_PARENT_ENABLE, \ + .ops = &mtk_clk_gate_ops_setclr, \ + } + +static const struct mtk_gate impc_clks[] = { + GATE_IMP(CLK_IMPC_I2C11, "impc_i2c11", "i2c_p", 0), + GATE_IMP(CLK_IMPC_I2C12, "impc_i2c12", "i2c_p", 1), + GATE_IMP(CLK_IMPC_I2C13, "impc_i2c13", "i2c_p", 2), + GATE_IMP(CLK_IMPC_I2C14, "impc_i2c14", "i2c_p", 3), +}; + +static const struct mtk_clk_desc impc_mcd = { + .clks = impc_clks, + .num_clks = ARRAY_SIZE(impc_clks), +}; + +static const struct mtk_gate impe_clks[] = { + GATE_IMP(CLK_IMPE_I2C5, "impe_i2c5", "i2c_east", 0), +}; + +static const struct mtk_clk_desc impe_mcd = { + .clks = impe_clks, + .num_clks = ARRAY_SIZE(impe_clks), +}; + +static const struct mtk_gate_regs impn_hwv_regs = { + .set_ofs = 0x0000, + .clr_ofs = 0x0004, + .sta_ofs = 0x2c00, +}; + +#define GATE_HWV_IMPN(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &imp_cg_regs, \ + .hwv_regs = &impn_hwv_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_hwv_ops_setclr, \ + .flags = CLK_OPS_PARENT_ENABLE, \ + } + +static const struct mtk_gate impn_clks[] = { + GATE_IMP(CLK_IMPN_I2C1, "impn_i2c1", "i2c_north", 0), + GATE_IMP(CLK_IMPN_I2C2, "impn_i2c2", "i2c_north", 1), + GATE_IMP(CLK_IMPN_I2C4, "impn_i2c4", "i2c_north", 2), + GATE_HWV_IMPN(CLK_IMPN_I2C7, "impn_i2c7", "i2c_north", 3), + GATE_IMP(CLK_IMPN_I2C8, "impn_i2c8", "i2c_north", 4), + GATE_IMP(CLK_IMPN_I2C9, "impn_i2c9", "i2c_north", 5), +}; + +static const struct mtk_clk_desc impn_mcd = { + .clks = impn_clks, + .num_clks = ARRAY_SIZE(impn_clks), +}; + +static const struct mtk_gate impw_clks[] = { + GATE_IMP(CLK_IMPW_I2C0, "impw_i2c0", "i2c_west", 0), + GATE_IMP(CLK_IMPW_I2C3, "impw_i2c3", "i2c_west", 1), + GATE_IMP(CLK_IMPW_I2C6, "impw_i2c6", "i2c_west", 2), + GATE_IMP(CLK_IMPW_I2C10, "impw_i2c10", "i2c_west", 3), +}; + +static const struct mtk_clk_desc impw_mcd = { + .clks = impw_clks, + .num_clks = ARRAY_SIZE(impw_clks), +}; + +static const struct of_device_id of_match_clk_mt8196_imp_iic_wrap[] = { + { .compatible = "mediatek,mt8196-imp-iic-wrap-c", .data = &impc_mcd }, + { .compatible = "mediatek,mt8196-imp-iic-wrap-e", .data = &impe_mcd }, + { .compatible = "mediatek,mt8196-imp-iic-wrap-n", .data = &impn_mcd }, + { .compatible = "mediatek,mt8196-imp-iic-wrap-w", .data = &impw_mcd }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_imp_iic_wrap); + +static struct platform_driver clk_mt8196_imp_iic_wrap_drv = { + .probe = mtk_clk_simple_probe, + .remove = mtk_clk_simple_remove, + .driver = { + .name = "clk-mt8196-imp_iic_wrap", + .of_match_table = of_match_clk_mt8196_imp_iic_wrap, + }, +}; +module_platform_driver(clk_mt8196_imp_iic_wrap_drv); + +MODULE_DESCRIPTION("MediaTek MT8196 I2C Wrapper clocks driver"); +MODULE_LICENSE("GPL"); -- 2.39.5