[PATCH v3 07/21] clk: mediatek: Add MT8189 vlpcfg clock support

[irving.ch.lin <irving-ch.lin@mediatek.com>]

From: Irving-CH Lin <irving-ch.lin@mediatek.com>

Add support for the MT8189 vlpcfg clock controller,
which provides clock gate control for vlp domain IPs.

Signed-off-by: Irving-CH Lin <irving-ch.lin@mediatek.com>
---
 drivers/clk/mediatek/Makefile            |   2 +-
 drivers/clk/mediatek/clk-mt8189-vlpcfg.c | 121 +++++++++++++++++++++++
 2 files changed, 122 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8189-vlpcfg.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 3b25df9e7b50..d9279b237b7b 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -124,7 +124,7 @@ obj-$(CONFIG_COMMON_CLK_MT8188_VENCSYS) += clk-mt8188-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8188_VPPSYS) += clk-mt8188-vpp0.o clk-mt8188-vpp1.o
 obj-$(CONFIG_COMMON_CLK_MT8188_WPESYS) += clk-mt8188-wpe.o
 obj-$(CONFIG_COMMON_CLK_MT8189) += clk-mt8189-apmixedsys.o clk-mt8189-topckgen.o \
-				   clk-mt8189-vlpckgen.o
+				   clk-mt8189-vlpckgen.o clk-mt8189-vlpcfg.o
 obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192-apmixedsys.o clk-mt8192.o
 obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o
 obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o
diff --git a/drivers/clk/mediatek/clk-mt8189-vlpcfg.c b/drivers/clk/mediatek/clk-mt8189-vlpcfg.c
new file mode 100644
index 000000000000..0508237a2b41
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8189-vlpcfg.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025 MediaTek Inc.
+ * Author: Qiqi Wang <qiqi.wang@mediatek.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mediatek,mt8189-clk.h>
+
+static const struct mtk_gate_regs vlpcfg_ao_reg_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x0,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_VLPCFG_AO_REG(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &vlpcfg_ao_reg_cg_regs,		\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+static const struct mtk_gate vlpcfg_ao_reg_clks[] = {
+	GATE_VLPCFG_AO_REG(CLK_VLPCFG_AO_APEINT_RX, "vlpcfg_ao_apeint_rx", "clk26m", 8),
+};
+
+static const struct mtk_clk_desc vlpcfg_ao_reg_mcd = {
+	.clks = vlpcfg_ao_reg_clks,
+	.num_clks = ARRAY_SIZE(vlpcfg_ao_reg_clks),
+};
+
+static const struct mtk_gate_regs vlpcfg_reg_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x4,
+	.sta_ofs = 0x4,
+};
+
+#define GATE_VLPCFG_REG_FLAGS(_id, _name, _parent, _shift, _flags) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &vlpcfg_reg_cg_regs,		\
+		.shift = _shift,			\
+		.flags = _flags,			\
+		.ops = &mtk_clk_gate_ops_no_setclr_inv,	\
+	}
+
+#define GATE_VLPCFG_REG(_id, _name, _parent, _shift)		\
+	GATE_VLPCFG_REG_FLAGS(_id, _name, _parent, _shift, 0)
+
+static const struct mtk_gate vlpcfg_reg_clks[] = {
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SCP, "vlpcfg_scp",
+			      "vlp_scp_sel", 28, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_RG_R_APXGPT_26M, "vlpcfg_r_apxgpt_26m",
+			      "clk26m", 24, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_DPMSRCK_TEST, "vlpcfg_dpmsrck_test",
+			      "clk26m", 23, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_RG_DPMSRRTC_TEST, "vlpcfg_dpmsrrtc_test",
+			      "clk32k", 22, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_DPMSRULP_TEST, "vlpcfg_dpmsrulp_test",
+			      "osc_d10", 21, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SPMI_P_MST, "vlpcfg_spmi_p",
+			      "vlp_spmi_p_sel", 20, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SPMI_P_MST_32K, "vlpcfg_spmi_p_32k",
+			      "clk32k", 18, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_PMIF_SPMI_P_SYS, "vlpcfg_pmif_spmi_p_sys",
+			      "vlp_pwrap_ulposc_sel", 13, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_PMIF_SPMI_P_TMR, "vlpcfg_pmif_spmi_p_tmr",
+			      "vlp_pwrap_ulposc_sel", 12, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG(CLK_VLPCFG_REG_PMIF_SPMI_M_SYS, "vlpcfg_pmif_spmi_m_sys",
+			"vlp_pwrap_ulposc_sel", 11),
+	GATE_VLPCFG_REG(CLK_VLPCFG_REG_PMIF_SPMI_M_TMR, "vlpcfg_pmif_spmi_m_tmr",
+			"vlp_pwrap_ulposc_sel", 10),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_DVFSRC, "vlpcfg_dvfsrc",
+			      "vlp_dvfsrc_sel", 9, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_PWM_VLP, "vlpcfg_pwm_vlp",
+			      "vlp_pwm_vlp_sel", 8, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SRCK, "vlpcfg_srck",
+			      "vlp_srck_sel", 7, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SSPM_F26M, "vlpcfg_sspm_f26m",
+			      "vlp_sspm_f26m_sel", 4, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SSPM_F32K, "vlpcfg_sspm_f32k",
+			      "clk32k", 3, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_SSPM_ULPOSC, "vlpcfg_sspm_ulposc",
+			      "vlp_sspm_ulposc_sel", 2, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_VLP_32K_COM, "vlpcfg_vlp_32k_com",
+			      "clk32k", 1, CLK_IS_CRITICAL),
+	GATE_VLPCFG_REG_FLAGS(CLK_VLPCFG_REG_VLP_26M_COM, "vlpcfg_vlp_26m_com",
+			      "clk26m", 0, CLK_IS_CRITICAL),
+};
+
+static const struct mtk_clk_desc vlpcfg_reg_mcd = {
+	.clks = vlpcfg_reg_clks,
+	.num_clks = ARRAY_SIZE(vlpcfg_reg_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8189_vlpcfg[] = {
+	{ .compatible = "mediatek,mt8189-vlp-ao", .data = &vlpcfg_ao_reg_mcd },
+	{ .compatible = "mediatek,mt8189-vlpcfg-ao", .data = &vlpcfg_reg_mcd },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8189_vlpcfg_drv = {
+	.probe = mtk_clk_simple_probe,
+	.driver = {
+		.name = "clk-mt8189-vlpcfg",
+		.of_match_table = of_match_clk_mt8189_vlpcfg,
+	},
+};
+
+module_platform_driver(clk_mt8189_vlpcfg_drv);
+MODULE_LICENSE("GPL");
-- 
2.45.2