diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 3d2daa4ba2a4..b36700f4a9f5 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -139,7 +139,6 @@ struct rzg2l_pll5_mux_dsi_div_param {
  * @num_resets: Number of Module Resets in info->resets[]
  * @last_dt_core_clk: ID of the last Core Clock exported to DT
  * @info: Pointer to platform data
- * @genpd: PM domain
  * @mux_dsi_div_params: pll5 mux and dsi div parameters
  */
 struct rzg2l_cpg_priv {
@@ -156,8 +155,6 @@ struct rzg2l_cpg_priv {
 
 	const struct rzg2l_cpg_info *info;
 
-	struct generic_pm_domain genpd;
-
 	struct rzg2l_pll5_mux_dsi_div_param mux_dsi_div_params;
 };
 
@@ -1559,9 +1556,34 @@ static bool rzg2l_cpg_is_pm_clk(struct rzg2l_cpg_priv *priv,
 	return true;
 }
 
+/**
+ * struct rzg2l_cpg_pm_domains - RZ/G2L PM domains data structure
+ * @onecell_data: cell data
+ * @domains: generic PM domains
+ */
+struct rzg2l_cpg_pm_domains {
+	struct genpd_onecell_data onecell_data;
+	struct generic_pm_domain *domains[];
+};
+
+/**
+ * struct rzg2l_cpg_pd - RZ/G2L power domain data structure
+ * @genpd: generic PM domain
+ * @priv: pointer to CPG private data structure
+ * @conf: CPG PM domain configuration info
+ * @id: RZ/G2L power domain ID
+ */
+struct rzg2l_cpg_pd {
+	struct generic_pm_domain genpd;
+	struct rzg2l_cpg_priv *priv;
+	struct rzg2l_cpg_pm_domain_conf conf;
+	u16 id;
+};
+
 static int rzg2l_cpg_attach_dev(struct generic_pm_domain *domain, struct device *dev)
 {
-	struct rzg2l_cpg_priv *priv = container_of(domain, struct rzg2l_cpg_priv, genpd);
+	struct rzg2l_cpg_pd *pd = container_of(domain, struct rzg2l_cpg_pd, genpd);
+	struct rzg2l_cpg_priv *priv = pd->priv;
 	struct device_node *np = dev->of_node;
 	struct of_phandle_args clkspec;
 	bool once = true;
@@ -1617,31 +1639,194 @@ static void rzg2l_cpg_detach_dev(struct generic_pm_domain *unused, struct device
 }
 
 static void rzg2l_cpg_genpd_remove(void *data)
+{
+	struct genpd_onecell_data *celldata = data;
+
+	for (unsigned int i = 0; i < celldata->num_domains; i++)
+		pm_genpd_remove(celldata->domains[i]);
+}
+
+static void rzg2l_cpg_genpd_remove_simple(void *data)
 {
 	pm_genpd_remove(data);
 }
 
+static int rzg2l_cpg_power_on(struct generic_pm_domain *domain)
+{
+	struct rzg2l_cpg_pd *pd = container_of(domain, struct rzg2l_cpg_pd, genpd);
+	struct rzg2l_cpg_reg_conf mstop = pd->conf.mstop;
+	struct rzg2l_cpg_reg_conf pwrdn = pd->conf.pwrdn;
+	struct rzg2l_cpg_priv *priv = pd->priv;
+
+	/* Set PWRDN. */
+	if (pwrdn.mask)
+		writel(pwrdn.mask << 16, priv->base + pwrdn.off);
+
+	/* Set MSTOP. */
+	if (mstop.mask)
+		writel(mstop.mask << 16, priv->base + mstop.off);
+
+	return 0;
+}
+
+static int rzg2l_cpg_power_off(struct generic_pm_domain *domain)
+{
+	struct rzg2l_cpg_pd *pd = container_of(domain, struct rzg2l_cpg_pd, genpd);
+	struct rzg2l_cpg_reg_conf mstop = pd->conf.mstop;
+	struct rzg2l_cpg_reg_conf pwrdn = pd->conf.pwrdn;
+	struct rzg2l_cpg_priv *priv = pd->priv;
+
+	/* Set MSTOP. */
+	if (mstop.mask)
+		writel(mstop.mask | (mstop.mask << 16), priv->base + mstop.off);
+
+	/* Set PWRDN. */
+	if (pwrdn.mask)
+		writel(pwrdn.mask | (pwrdn.mask << 16), priv->base + pwrdn.off);
+
+	return 0;
+}
+
+static int __init rzg2l_cpg_pd_setup(struct rzg2l_cpg_pd *pd, bool always_on)
+{
+	struct dev_power_governor *governor;
+
+	pd->genpd.flags |= GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP;
+	pd->genpd.attach_dev = rzg2l_cpg_attach_dev;
+	pd->genpd.detach_dev = rzg2l_cpg_detach_dev;
+	if (always_on) {
+		pd->genpd.flags |= GENPD_FLAG_ALWAYS_ON;
+		governor = &pm_domain_always_on_gov;
+	} else {
+		pd->genpd.power_on = rzg2l_cpg_power_on;
+		pd->genpd.power_off = rzg2l_cpg_power_off;
+		governor = &simple_qos_governor;
+	}
+
+	return pm_genpd_init(&pd->genpd, governor, !always_on);
+}
+
 static int __init rzg2l_cpg_add_clk_domain(struct rzg2l_cpg_priv *priv)
 {
 	struct device *dev = priv->dev;
 	struct device_node *np = dev->of_node;
-	struct generic_pm_domain *genpd = &priv->genpd;
+	struct rzg2l_cpg_pd *pd;
 	int ret;
 
-	genpd->name = np->name;
-	genpd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ALWAYS_ON |
-		       GENPD_FLAG_ACTIVE_WAKEUP;
-	genpd->attach_dev = rzg2l_cpg_attach_dev;
-	genpd->detach_dev = rzg2l_cpg_detach_dev;
-	ret = pm_genpd_init(genpd, &pm_domain_always_on_gov, false);
+	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+	if (!pd)
+		return -ENOMEM;
+
+	pd->genpd.name = np->name;
+	pd->priv = priv;
+	ret = rzg2l_cpg_pd_setup(pd, true);
 	if (ret)
 		return ret;
 
-	ret = devm_add_action_or_reset(dev, rzg2l_cpg_genpd_remove, genpd);
+	ret = devm_add_action_or_reset(dev, rzg2l_cpg_genpd_remove_simple, &pd->genpd);
 	if (ret)
 		return ret;
 
-	return of_genpd_add_provider_simple(np, genpd);
+	return of_genpd_add_provider_simple(np, &pd->genpd);
+}
+
+static struct generic_pm_domain *
+rzg2l_cpg_pm_domain_xlate(const struct of_phandle_args *spec, void *data)
+{
+	struct generic_pm_domain *domain = ERR_PTR(-ENOENT);
+	struct genpd_onecell_data *genpd = data;
+
+	if (spec->args_count != 1)
+		return ERR_PTR(-EINVAL);
+
+	for (unsigned int i = 0; i < genpd->num_domains; i++) {
+		struct rzg2l_cpg_pd *pd = container_of(genpd->domains[i], struct rzg2l_cpg_pd,
+						       genpd);
+
+		if (pd->id == spec->args[0]) {
+			domain = &pd->genpd;
+			break;
+		}
+	}
+
+	return domain;
+}
+
+static int __init rzg2l_cpg_add_pm_domains(struct rzg2l_cpg_priv *priv)
+{
+	const struct rzg2l_cpg_info *info = priv->info;
+	struct device *dev = priv->dev;
+	struct device_node *np = dev->of_node;
+	struct rzg2l_cpg_pm_domains *domains;
+	struct generic_pm_domain *parent;
+	u32 ncells;
+	int ret;
+
+	ret = of_property_read_u32(np, "#power-domain-cells", &ncells);
+	if (ret)
+		return ret;
+
+	/* For backward compatibility. */
+	if (!ncells)
+		return rzg2l_cpg_add_clk_domain(priv);
+
+	domains = devm_kzalloc(dev, struct_size(domains, domains, info->num_pm_domains),
+			       GFP_KERNEL);
+	if (!domains)
+		return -ENOMEM;
+
+	domains->onecell_data.domains = domains->domains;
+	domains->onecell_data.num_domains = info->num_pm_domains;
+	domains->onecell_data.xlate = rzg2l_cpg_pm_domain_xlate;
+
+	ret = devm_add_action_or_reset(dev, rzg2l_cpg_genpd_remove, &domains->onecell_data);
+	if (ret)
+		return ret;
+
+	for (unsigned int i = 0; i < info->num_pm_domains; i++) {
+		bool always_on = !!(info->pm_domains[i].flags & RZG2L_PD_F_ALWAYS_ON);
+		struct rzg2l_cpg_pd *pd;
+
+		pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+		if (!pd)
+			return -ENOMEM;
+
+		pd->genpd.name = info->pm_domains[i].name;
+		pd->conf = info->pm_domains[i].conf;
+		pd->id = info->pm_domains[i].id;
+		pd->priv = priv;
+
+		ret = rzg2l_cpg_pd_setup(pd, always_on);
+		if (ret)
+			return ret;
+
+		if (always_on) {
+			ret = rzg2l_cpg_power_on(&pd->genpd);
+			if (ret)
+				return ret;
+		}
+
+		domains->domains[i] = &pd->genpd;
+		/* Parent should be on the very first entry of info->pm_domains[]. */
+		if (!i) {
+			parent = &pd->genpd;
+			continue;
+		}
+
+		ret = pm_genpd_add_subdomain(parent, &pd->genpd);
+		if (ret)
+			return ret;
+	}
+
+	ret = of_genpd_add_provider_onecell(np, &domains->onecell_data);
+	if (ret)
+		return ret;
+
+	/* Prepare for power down the BUSes in power down mode. */
+	if (info->pm_domain_pwrdn_mstop)
+		writel(CPG_PWRDN_MSTOP_ENABLE, priv->base + CPG_PWRDN_MSTOP);
+
+	return 0;
 }
 
 static int __init rzg2l_cpg_probe(struct platform_device *pdev)
@@ -1697,7 +1882,7 @@ static int __init rzg2l_cpg_probe(struct platform_device *pdev)
 	if (error)
 		return error;
 
-	error = rzg2l_cpg_add_clk_domain(priv);
+	error = rzg2l_cpg_add_pm_domains(priv);
 	if (error)
 		return error;
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 6e38c8fc888c..d9a7357c4873 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -27,6 +27,21 @@
 #define CPG_PL6_ETH_SSEL	(0x418)
 #define CPG_PL5_SDIV		(0x420)
 #define CPG_RST_MON		(0x680)
+#define CPG_BUS_ACPU_MSTOP	(0xB60)
+#define CPG_BUS_MCPU1_MSTOP	(0xB64)
+#define CPG_BUS_MCPU2_MSTOP	(0xB68)
+#define CPG_BUS_PERI_COM_MSTOP	(0xB6C)
+#define CPG_BUS_PERI_CPU_MSTOP	(0xB70)
+#define CPG_BUS_PERI_DDR_MSTOP	(0xB74)
+#define CPG_BUS_REG0_MSTOP	(0xB7C)
+#define CPG_BUS_REG1_MSTOP	(0xB80)
+#define CPG_BUS_TZCDDR_MSTOP	(0xB84)
+#define CPG_MHU_MSTOP		(0xB88)
+#define CPG_BUS_MCPU3_MSTOP	(0xB90)
+#define CPG_BUS_PERI_CPU2_MSTOP	(0xB94)
+#define CPG_PWRDN_IP1		(0xBB0)
+#define CPG_PWRDN_IP2		(0xBB4)
+#define CPG_PWRDN_MSTOP		(0xBC0)
 #define CPG_OTHERFUNC1_REG	(0xBE8)
 
 #define CPG_SIPLL5_STBY_RESETB		BIT(0)
@@ -70,6 +85,8 @@
 
 #define EXTAL_FREQ_IN_MEGA_HZ	(24)
 
+#define CPG_PWRDN_MSTOP_ENABLE		(BIT(16) | BIT(0))
+
 /**
  * Definitions of CPG Core Clocks
  *
@@ -234,6 +251,58 @@ struct rzg2l_reset {
 #define DEF_RST(_id, _off, _bit)	\
 	DEF_RST_MON(_id, _off, _bit, -1)
 
+/**
+ * struct rzg2l_cpg_reg_conf - RZ/G2L register configuration data structure
+ * @off: register offset
+ * @mask: register mask
+ */
+struct rzg2l_cpg_reg_conf {
+	u16 off;
+	u16 mask;
+};
+
+#define DEF_REG_CONF(_off, _mask) ((struct rzg2l_cpg_reg_conf) { .off = (_off), .mask = (_mask) })
+
+/**
+ * struct rzg2l_cpg_pm_domain_conf - PM domain configuration data structure
+ * @mstop: MSTOP register configuration
+ * @pwrdn: PWRDN register configuration
+ */
+struct rzg2l_cpg_pm_domain_conf {
+	struct rzg2l_cpg_reg_conf mstop;
+	struct rzg2l_cpg_reg_conf pwrdn;
+};
+
+/**
+ * struct rzg2l_cpg_pm_domain_init_data - PM domain init data
+ * @name: PM domain name
+ * @conf: PM domain configuration
+ * @flags: RZG2L PM domain flags (see RZG2L_PD_F_*)
+ * @id: PM domain ID (similar to the ones defined in
+ *      include/dt-bindings/clock/<soc-id>-cpg.h)
+ */
+struct rzg2l_cpg_pm_domain_init_data {
+	const char * const name;
+	struct rzg2l_cpg_pm_domain_conf conf;
+	u32 flags;
+	u16 id;
+};
+
+#define DEF_PD(_name, _id, _mstop_conf, _pwrdn_conf, _flags) \
+	{ \
+		.name = (_name), \
+		.id = (_id), \
+		.conf = { \
+			.mstop = (_mstop_conf), \
+			.pwrdn = (_pwrdn_conf), \
+		}, \
+		.flags = (_flags), \
+	}
+
+/* Power domain flags. */
+#define RZG2L_PD_F_ALWAYS_ON	BIT(0)
+#define RZG2L_PD_F_NONE		(0)
+
 /**
  * struct rzg2l_cpg_info - SoC-specific CPG Description
  *
@@ -252,6 +321,9 @@ struct rzg2l_reset {
  * @crit_mod_clks: Array with Module Clock IDs of critical clocks that
  *                 should not be disabled without a knowledgeable driver
  * @num_crit_mod_clks: Number of entries in crit_mod_clks[]
+ * @pm_domains: PM domains init data array
+ * @num_pm_domains: Number of PM domains
+ * @pm_domain_pwrdn_mstop: Specifies if PWRDN MSTOP is supported
  * @has_clk_mon_regs: Flag indicating whether the SoC has CLK_MON registers
  */
 struct rzg2l_cpg_info {
@@ -278,6 +350,11 @@ struct rzg2l_cpg_info {
 	const unsigned int *crit_mod_clks;
 	unsigned int num_crit_mod_clks;
 
+	/* Power domain. */
+	const struct rzg2l_cpg_pm_domain_init_data *pm_domains;
+	unsigned int num_pm_domains;
+	bool pm_domain_pwrdn_mstop;
+
 	bool has_clk_mon_regs;
 };
 
