[PATCH v5 23/27] clk: mediatek: Add MT8196 disp-ao clock support
From: Laura Nao <hidden>
Date: 2025-08-29 09:21:23
Also in:
linux-clk, linux-devicetree, linux-mediatek, lkml, netdev
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
Add support for the MT8196 disp-ao clock controller, which provides clock gate control for the display system. It is integrated with the mtk-mmsys driver, which registers the disp-ao clock driver via platform_device_register_data(). Reviewed-by: Nícolas F. R. A. Prado <redacted> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Laura Nao <redacted> --- drivers/clk/mediatek/Makefile | 2 +- drivers/clk/mediatek/clk-mt8196-vdisp_ao.c | 80 ++++++++++++++++++++++ 2 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/mediatek/clk-mt8196-vdisp_ao.c
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index fe5699411d8b..5b8969ff1985 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile@@ -157,7 +157,7 @@ obj-$(CONFIG_COMMON_CLK_MT8196_IMP_IIC_WRAP) += clk-mt8196-imp_iic_wrap.o obj-$(CONFIG_COMMON_CLK_MT8196_MCUSYS) += clk-mt8196-mcu.o obj-$(CONFIG_COMMON_CLK_MT8196_MDPSYS) += clk-mt8196-mdpsys.o obj-$(CONFIG_COMMON_CLK_MT8196_MFGCFG) += clk-mt8196-mfg.o -obj-$(CONFIG_COMMON_CLK_MT8196_MMSYS) += clk-mt8196-disp0.o clk-mt8196-disp1.o +obj-$(CONFIG_COMMON_CLK_MT8196_MMSYS) += clk-mt8196-disp0.o clk-mt8196-disp1.o clk-mt8196-vdisp_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
diff --git a/drivers/clk/mediatek/clk-mt8196-vdisp_ao.c b/drivers/clk/mediatek/clk-mt8196-vdisp_ao.c
new file mode 100644
index 000000000000..fddb69d1c3eb
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8196-vdisp_ao.c@@ -0,0 +1,80 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2025 MediaTek Inc. + * Guangjie Song <guangjie.song@mediatek.com> + * Copyright (c) 2025 Collabora Ltd. + * Laura Nao <laura.nao@collabora.com> + */ +#include <dt-bindings/clock/mediatek,mt8196-clock.h> + +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include "clk-gate.h" +#include "clk-mtk.h" + +static const struct mtk_gate_regs mm_v_cg_regs = { + .set_ofs = 0x104, + .clr_ofs = 0x108, + .sta_ofs = 0x100, +}; + +static const struct mtk_gate_regs mm_v_hwv_regs = { + .set_ofs = 0x0030, + .clr_ofs = 0x0034, + .sta_ofs = 0x2c18, +}; + +#define GATE_MM_AO_V(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &mm_v_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_setclr, \ + .flags = CLK_OPS_PARENT_ENABLE | \ + CLK_IS_CRITICAL, \ + } + +#define GATE_HWV_MM_V(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &mm_v_cg_regs, \ + .hwv_regs = &mm_v_hwv_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_hwv_ops_setclr, \ + .flags = CLK_OPS_PARENT_ENABLE, \ + } + +static const struct mtk_gate mm_v_clks[] = { + GATE_HWV_MM_V(CLK_MM_V_DISP_VDISP_AO_CONFIG, "mm_v_disp_vdisp_ao_config", "disp", 0), + GATE_HWV_MM_V(CLK_MM_V_DISP_DPC, "mm_v_disp_dpc", "disp", 16), + GATE_MM_AO_V(CLK_MM_V_SMI_SUB_SOMM0, "mm_v_smi_sub_somm0", "disp", 2), +}; + +static const struct mtk_clk_desc mm_v_mcd = { + .clks = mm_v_clks, + .num_clks = ARRAY_SIZE(mm_v_clks), +}; + +static const struct of_device_id of_match_clk_mt8196_vdisp_ao[] = { + { .compatible = "mediatek,mt8196-vdisp-ao", .data = &mm_v_mcd }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_vdisp_ao); + +static struct platform_driver clk_mt8196_vdisp_ao_drv = { + .probe = mtk_clk_pdev_probe, + .remove = mtk_clk_pdev_remove, + .driver = { + .name = "clk-mt8196-vdisp-ao", + .of_match_table = of_match_clk_mt8196_vdisp_ao, + }, +}; +module_platform_driver(clk_mt8196_vdisp_ao_drv); + +MODULE_DESCRIPTION("MediaTek MT8196 vdisp_ao clocks driver"); +MODULE_LICENSE("GPL");
--
2.39.5