Add support for the MT8196 pextpsys clock controller, which provides clock gate control for PCIe. Reviewed-by: Nícolas F. R. A. Prado Co-developed-by: AngeloGioacchino Del Regno Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Laura Nao --- drivers/clk/mediatek/Kconfig | 7 ++ drivers/clk/mediatek/Makefile | 1 + drivers/clk/mediatek/clk-mt8196-pextp.c | 131 ++++++++++++++++++++++++ 3 files changed, 139 insertions(+) create mode 100644 drivers/clk/mediatek/clk-mt8196-pextp.c diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index 848624792a23..cd12e7ff3e12 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_PEXTPSYS + tristate "Clock driver for MediaTek MT8196 pextpsys" + depends on COMMON_CLK_MT8196 + default COMMON_CLK_MT8196 + help + This driver supports MediaTek MT8196 pextpsys clocks. + config COMMON_CLK_MT8196_UFSSYS tristate "Clock driver for MediaTek MT8196 ufssys" depends on COMMON_CLK_MT8196 diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index ee6a1bb5ce38..21e768f67283 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-$(CONFIG_COMMON_CLK_MT8196_PEXTPSYS) += clk-mt8196-pextp.o obj-$(CONFIG_COMMON_CLK_MT8196_UFSSYS) += clk-mt8196-ufs_ao.o obj-$(CONFIG_COMMON_CLK_MT8365) += clk-mt8365-apmixedsys.o clk-mt8365.o obj-$(CONFIG_COMMON_CLK_MT8365_APU) += clk-mt8365-apu.o diff --git a/drivers/clk/mediatek/clk-mt8196-pextp.c b/drivers/clk/mediatek/clk-mt8196-pextp.c new file mode 100644 index 000000000000..9a7623bf2b1c --- /dev/null +++ b/drivers/clk/mediatek/clk-mt8196-pextp.c @@ -0,0 +1,131 @@ +// 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 + +#include "clk-gate.h" +#include "clk-mtk.h" +#include "reset.h" + +#define MT8196_PEXTP_RST0_SET_OFFSET 0x8 + +static const struct mtk_gate_regs pext_cg_regs = { + .set_ofs = 0x18, + .clr_ofs = 0x1c, + .sta_ofs = 0x14, +}; + +#define GATE_PEXT(_id, _name, _parent, _shift) {\ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &pext_cg_regs, \ + .shift = _shift, \ + .flags = CLK_OPS_PARENT_ENABLE, \ + .ops = &mtk_clk_gate_ops_setclr,\ + } + +static const struct mtk_gate pext_clks[] = { + GATE_PEXT(CLK_PEXT_PEXTP_MAC_P0_TL, "pext_pm0_tl", "tl", 0), + GATE_PEXT(CLK_PEXT_PEXTP_MAC_P0_REF, "pext_pm0_ref", "clk26m", 1), + GATE_PEXT(CLK_PEXT_PEXTP_PHY_P0_MCU_BUS, "pext_pp0_mcu_bus", "clk26m", 6), + GATE_PEXT(CLK_PEXT_PEXTP_PHY_P0_PEXTP_REF, "pext_pp0_pextp_ref", "clk26m", 7), + GATE_PEXT(CLK_PEXT_PEXTP_MAC_P0_AXI_250, "pext_pm0_axi_250", "ufs_pexpt0_mem_sub", 12), + GATE_PEXT(CLK_PEXT_PEXTP_MAC_P0_AHB_APB, "pext_pm0_ahb_apb", "ufs_pextp0_axi", 13), + GATE_PEXT(CLK_PEXT_PEXTP_MAC_P0_PL_P, "pext_pm0_pl_p", "clk26m", 14), + GATE_PEXT(CLK_PEXT_PEXTP_VLP_AO_P0_LP, "pext_pextp_vlp_ao_p0_lp", "clk26m", 19), +}; + +static u16 pext_rst_ofs[] = { MT8196_PEXTP_RST0_SET_OFFSET }; + +static u16 pext_rst_idx_map[] = { + [MT8196_PEXTP0_RST0_PCIE0_MAC] = 0, + [MT8196_PEXTP0_RST0_PCIE0_PHY] = 1, +}; + +static const struct mtk_clk_rst_desc pext_rst_desc = { + .version = MTK_RST_SET_CLR, + .rst_bank_ofs = pext_rst_ofs, + .rst_bank_nr = ARRAY_SIZE(pext_rst_ofs), + .rst_idx_map = pext_rst_idx_map, + .rst_idx_map_nr = ARRAY_SIZE(pext_rst_idx_map), +}; + +static const struct mtk_clk_desc pext_mcd = { + .clks = pext_clks, + .num_clks = ARRAY_SIZE(pext_clks), + .rst_desc = &pext_rst_desc, +}; + +static const struct mtk_gate pext1_clks[] = { + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P1_TL, "pext1_pm1_tl", "tl_p1", 0), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P1_REF, "pext1_pm1_ref", "clk26m", 1), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P2_TL, "pext1_pm2_tl", "tl_p2", 2), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P2_REF, "pext1_pm2_ref", "clk26m", 3), + GATE_PEXT(CLK_PEXT1_PEXTP_PHY_P1_MCU_BUS, "pext1_pp1_mcu_bus", "clk26m", 8), + GATE_PEXT(CLK_PEXT1_PEXTP_PHY_P1_PEXTP_REF, "pext1_pp1_pextp_ref", "clk26m", 9), + GATE_PEXT(CLK_PEXT1_PEXTP_PHY_P2_MCU_BUS, "pext1_pp2_mcu_bus", "clk26m", 10), + GATE_PEXT(CLK_PEXT1_PEXTP_PHY_P2_PEXTP_REF, "pext1_pp2_pextp_ref", "clk26m", 11), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P1_AXI_250, "pext1_pm1_axi_250", + "pextp1_usb_axi", 16), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P1_AHB_APB, "pext1_pm1_ahb_apb", + "pextp1_usb_mem_sub", 17), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P1_PL_P, "pext1_pm1_pl_p", "clk26m", 18), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P2_AXI_250, "pext1_pm2_axi_250", + "pextp1_usb_axi", 19), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P2_AHB_APB, "pext1_pm2_ahb_apb", + "pextp1_usb_mem_sub", 20), + GATE_PEXT(CLK_PEXT1_PEXTP_MAC_P2_PL_P, "pext1_pm2_pl_p", "clk26m", 21), + GATE_PEXT(CLK_PEXT1_PEXTP_VLP_AO_P1_LP, "pext1_pextp_vlp_ao_p1_lp", "clk26m", 26), + GATE_PEXT(CLK_PEXT1_PEXTP_VLP_AO_P2_LP, "pext1_pextp_vlp_ao_p2_lp", "clk26m", 27), +}; + +static u16 pext1_rst_idx_map[] = { + [MT8196_PEXTP1_RST0_PCIE1_MAC] = 0, + [MT8196_PEXTP1_RST0_PCIE1_PHY] = 1, + [MT8196_PEXTP1_RST0_PCIE2_MAC] = 8, + [MT8196_PEXTP1_RST0_PCIE2_PHY] = 9, +}; + +static const struct mtk_clk_rst_desc pext1_rst_desc = { + .version = MTK_RST_SET_CLR, + .rst_bank_ofs = pext_rst_ofs, + .rst_bank_nr = ARRAY_SIZE(pext_rst_ofs), + .rst_idx_map = pext1_rst_idx_map, + .rst_idx_map_nr = ARRAY_SIZE(pext1_rst_idx_map), +}; + +static const struct mtk_clk_desc pext1_mcd = { + .clks = pext1_clks, + .num_clks = ARRAY_SIZE(pext1_clks), + .rst_desc = &pext1_rst_desc, +}; + +static const struct of_device_id of_match_clk_mt8196_pextp[] = { + { .compatible = "mediatek,mt8196-pextp0cfg-ao", .data = &pext_mcd }, + { .compatible = "mediatek,mt8196-pextp1cfg-ao", .data = &pext1_mcd }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_pextp); + +static struct platform_driver clk_mt8196_pextp_drv = { + .probe = mtk_clk_simple_probe, + .remove = mtk_clk_simple_remove, + .driver = { + .name = "clk-mt8196-pextp", + .of_match_table = of_match_clk_mt8196_pextp, + }, +}; + +module_platform_driver(clk_mt8196_pextp_drv); +MODULE_DESCRIPTION("MediaTek MT8196 PCIe transmit phy clocks driver"); +MODULE_LICENSE("GPL"); -- 2.39.5