[PATCH 22/30] clk: mediatek: Add MT8196 disp0 clock support

Laura Nao
2025-06-23T12:11:16Z

Add support for the MT8196 disp0 clock controller, which provides clock
gate control for the display system. It is integrated with the mtk-mmsys
driver, which registers the disp0 clock driver via
platform_device_register_data().

Signed-off-by: Laura Nao <laura.nao@collabora.com>
---
drivers/clk/mediatek/Kconfig | 7 +
drivers/clk/mediatek/Makefile | 1 +
drivers/clk/mediatek/clk-mt8196-disp0.c | 169 ++++++++++++++++++++++++
3 files changed, 177 insertions(+)
create mode 100644 drivers/clk/mediatek/clk-mt8196-disp0.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index 9735f37f1e09..6bcefb782b9c 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -1103,6 +1103,13 @@ config COMMON_CLK_MT8196_MFGCFG
help
This driver supports MediaTek MT8196 mfgcfg clocks.

+config COMMON_CLK_MT8196_MMSYS
+ tristate "Clock driver for MediaTek MT8196 mmsys"
+ depends on COMMON_CLK_MT8196
+ default m
+ help
+ This driver supports MediaTek MT8196 mmsys 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 31436c8e2a80..eacaec3d61ce 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -168,6 +168,7 @@ 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-$(CONFIG_COMMON_CLK_MT8196_MMSYS) += clk-mt8196-disp0.o
obj-$(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-disp0.c b/drivers/clk/mediatek/clk-mt8196-disp0.c
new file mode 100644
index 000000000000..ed74b6e3103f
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8196-disp0.c
@@ -0,0 +1,169 @@
+// 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 mm0_cg_regs = {
+ .set_ofs = 0x104,
+ .clr_ofs = 0x108,
+ .sta_ofs = 0x100,
+};
+
+static const struct mtk_gate_regs mm0_hwv_regs = {
+ .set_ofs = 0x0020,
+ .clr_ofs = 0x0024,
+ .sta_ofs = 0x2c10,
+};
+
+static const struct mtk_gate_regs mm1_cg_regs = {
+ .set_ofs = 0x114,
+ .clr_ofs = 0x118,
+ .sta_ofs = 0x110,
+};
+
+static const struct mtk_gate_regs mm1_hwv_regs = {
+ .set_ofs = 0x0028,
+ .clr_ofs = 0x002c,
+ .sta_ofs = 0x2c14,
+};
+
+#define GATE_MM0(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &mm0_cg_regs, \
+ .shift = _shift, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ .ops = &mtk_clk_gate_ops_setclr,\
+ }
+
+#define GATE_HWV_MM0(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &mm0_cg_regs, \
+ .hwv_regs = &mm0_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr, \
+ .flags = CLK_OPS_PARENT_ENABLE \
+ }
+
+#define GATE_MM1(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &mm1_cg_regs, \
+ .shift = _shift, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ .ops = &mtk_clk_gate_ops_setclr,\
+ }
+
+#define GATE_HWV_MM1(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &mm1_cg_regs, \
+ .hwv_regs = &mm1_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ }
+
+static const struct mtk_gate mm_clks[] = {
+ /* MM0 */
+ GATE_HWV_MM0(CLK_MM_CONFIG, "mm_config", "disp", 0),
+ GATE_HWV_MM0(CLK_MM_DISP_MUTEX0, "mm_disp_mutex0", "disp", 1),
+ GATE_HWV_MM0(CLK_MM_DISP_AAL0, "mm_disp_aal0", "disp", 2),
+ GATE_HWV_MM0(CLK_MM_DISP_AAL1, "mm_disp_aal1", "disp", 3),
+ GATE_MM0(CLK_MM_DISP_C3D0, "mm_disp_c3d0", "disp", 4),
+ GATE_MM0(CLK_MM_DISP_C3D1, "mm_disp_c3d1", "disp", 5),
+ GATE_MM0(CLK_MM_DISP_C3D2, "mm_disp_c3d2", "disp", 6),
+ GATE_MM0(CLK_MM_DISP_C3D3, "mm_disp_c3d3", "disp", 7),
+ GATE_MM0(CLK_MM_DISP_CCORR0, "mm_disp_ccorr0", "disp", 8),
+ GATE_MM0(CLK_MM_DISP_CCORR1, "mm_disp_ccorr1", "disp", 9),
+ GATE_MM0(CLK_MM_DISP_CCORR2, "mm_disp_ccorr2", "disp", 10),
+ GATE_MM0(CLK_MM_DISP_CCORR3, "mm_disp_ccorr3", "disp", 11),
+ GATE_MM0(CLK_MM_DISP_CHIST0, "mm_disp_chist0", "disp", 12),
+ GATE_MM0(CLK_MM_DISP_CHIST1, "mm_disp_chist1", "disp", 13),
+ GATE_MM0(CLK_MM_DISP_COLOR0, "mm_disp_color0", "disp", 14),
+ GATE_MM0(CLK_MM_DISP_COLOR1, "mm_disp_color1", "disp", 15),
+ GATE_MM0(CLK_MM_DISP_DITHER0, "mm_disp_dither0", "disp", 16),
+ GATE_MM0(CLK_MM_DISP_DITHER1, "mm_disp_dither1", "disp", 17),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC0, "mm_disp_dli_async0", "disp", 18),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC1, "mm_disp_dli_async1", "disp", 19),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC2, "mm_disp_dli_async2", "disp", 20),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC3, "mm_disp_dli_async3", "disp", 21),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC4, "mm_disp_dli_async4", "disp", 22),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC5, "mm_disp_dli_async5", "disp", 23),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC6, "mm_disp_dli_async6", "disp", 24),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC7, "mm_disp_dli_async7", "disp", 25),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC8, "mm_disp_dli_async8", "disp", 26),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC9, "mm_disp_dli_async9", "disp", 27),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC10, "mm_disp_dli_async10", "disp", 28),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC11, "mm_disp_dli_async11", "disp", 29),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC12, "mm_disp_dli_async12", "disp", 30),
+ GATE_HWV_MM0(CLK_MM_DISP_DLI_ASYNC13, "mm_disp_dli_async13", "disp", 31),
+ /* MM1 */
+ GATE_HWV_MM1(CLK_MM_DISP_DLI_ASYNC14, "mm_disp_dli_async14", "disp", 0),
+ GATE_HWV_MM1(CLK_MM_DISP_DLI_ASYNC15, "mm_disp_dli_async15", "disp", 1),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC0, "mm_disp_dlo_async0", "disp", 2),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC1, "mm_disp_dlo_async1", "disp", 3),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC2, "mm_disp_dlo_async2", "disp", 4),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC3, "mm_disp_dlo_async3", "disp", 5),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC4, "mm_disp_dlo_async4", "disp", 6),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC5, "mm_disp_dlo_async5", "disp", 7),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC6, "mm_disp_dlo_async6", "disp", 8),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC7, "mm_disp_dlo_async7", "disp", 9),
+ GATE_HWV_MM1(CLK_MM_DISP_DLO_ASYNC8, "mm_disp_dlo_async8", "disp", 10),
+ GATE_MM1(CLK_MM_DISP_GAMMA0, "mm_disp_gamma0", "disp", 11),
+ GATE_MM1(CLK_MM_DISP_GAMMA1, "mm_disp_gamma1", "disp", 12),
+ GATE_MM1(CLK_MM_MDP_AAL0, "mm_mdp_aal0", "disp", 13),
+ GATE_MM1(CLK_MM_MDP_AAL1, "mm_mdp_aal1", "disp", 14),
+ GATE_HWV_MM1(CLK_MM_MDP_RDMA0, "mm_mdp_rdma0", "disp", 15),
+ GATE_HWV_MM1(CLK_MM_DISP_POSTMASK0, "mm_disp_postmask0", "disp", 16),
+ GATE_HWV_MM1(CLK_MM_DISP_POSTMASK1, "mm_disp_postmask1", "disp", 17),
+ GATE_HWV_MM1(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "disp", 18),
+ GATE_HWV_MM1(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "disp", 19),
+ GATE_HWV_MM1(CLK_MM_DISP_SPR0, "mm_disp_spr0", "disp", 20),
+ GATE_MM1(CLK_MM_DISP_TDSHP0, "mm_disp_tdshp0", "disp", 21),
+ GATE_MM1(CLK_MM_DISP_TDSHP1, "mm_disp_tdshp1", "disp", 22),
+ GATE_HWV_MM1(CLK_MM_DISP_WDMA0, "mm_disp_wdma0", "disp", 23),
+ GATE_HWV_MM1(CLK_MM_DISP_Y2R0, "mm_disp_y2r0", "disp", 24),
+ GATE_HWV_MM1(CLK_MM_SMI_SUB_COMM0, "mm_ssc", "disp", 25),
+ GATE_HWV_MM1(CLK_MM_DISP_FAKE_ENG0, "mm_disp_fake_eng0", "disp", 26),
+};
+
+static const struct mtk_clk_desc mm_mcd = {
+ .clks = mm_clks,
+ .num_clks = ARRAY_SIZE(mm_clks),
+};
+
+static const struct platform_device_id clk_mt8196_disp0_id_table[] = {
+ { .name = "clk-mt8196-disp0", .driver_data = (kernel_ulong_t)&mm_mcd },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, clk_mt8196_disp0_id_table);
+
+static struct platform_driver clk_mt8196_disp0_drv = {
+ .probe = mtk_clk_pdev_probe,
+ .remove = mtk_clk_pdev_remove,
+ .driver = {
+ .name = "clk-mt8196-disp0",
+ },
+ .id_table = clk_mt8196_disp0_id_table,
+};
+module_platform_driver(clk_mt8196_disp0_drv);
+
+MODULE_DESCRIPTION("MediaTek MT8196 disp0 clocks driver");
+MODULE_LICENSE("GPL");
--
2.39.5