Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 329 insertions, 36 deletions

diff --git a/drivers/clk/renesas/clk-r8a73a4.c b/drivers/clk/renesas/clk-r8a73a4.c
index f45c2c4580..4b1815147f 100644
--- a/drivers/clk/renesas/clk-r8a73a4.c
+++ b/drivers/clk/renesas/clk-r8a73a4.c
@@ -30,8 +30,6 @@ struct r8a73a4_cpg {
 #define CPG_PLL2HCR	0xe4
 #define CPG_PLL2SCR	0xf4
 
-#define CLK_ENABLE_ON_INIT BIT(0)
-
 struct div4_clk {
 	const char *name;
 	unsigned int reg;
diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c
index 3ee3f57e4e..22e9be7240 100644
--- a/drivers/clk/renesas/clk-r8a7740.c
+++ b/drivers/clk/renesas/clk-r8a7740.c
@@ -26,28 +26,25 @@ struct r8a7740_cpg {
 #define CPG_USBCKCR	0x8c
 #define CPG_FRQCRC	0xe0
 
-#define CLK_ENABLE_ON_INIT BIT(0)
-
 struct div4_clk {
 	const char *name;
 	unsigned int reg;
 	unsigned int shift;
-	int flags;
 };
 
 static struct div4_clk div4_clks[] = {
-	{ "i", CPG_FRQCRA, 20, CLK_ENABLE_ON_INIT },
-	{ "zg", CPG_FRQCRA, 16, CLK_ENABLE_ON_INIT },
-	{ "b", CPG_FRQCRA,  8, CLK_ENABLE_ON_INIT },
-	{ "m1", CPG_FRQCRA,  4, CLK_ENABLE_ON_INIT },
-	{ "hp", CPG_FRQCRB,  4, 0 },
-	{ "hpp", CPG_FRQCRC, 20, 0 },
-	{ "usbp", CPG_FRQCRC, 16, 0 },
-	{ "s", CPG_FRQCRC, 12, 0 },
-	{ "zb", CPG_FRQCRC,  8, 0 },
-	{ "m3", CPG_FRQCRC,  4, 0 },
-	{ "cp", CPG_FRQCRC,  0, 0 },
-	{ NULL, 0, 0, 0 },
+	{ "i", CPG_FRQCRA, 20 },
+	{ "zg", CPG_FRQCRA, 16 },
+	{ "b", CPG_FRQCRA,  8 },
+	{ "m1", CPG_FRQCRA,  4 },
+	{ "hp", CPG_FRQCRB,  4 },
+	{ "hpp", CPG_FRQCRC, 20 },
+	{ "usbp", CPG_FRQCRC, 16 },
+	{ "s", CPG_FRQCRC, 12 },
+	{ "zb", CPG_FRQCRC,  8 },
+	{ "m3", CPG_FRQCRC,  4 },
+	{ "cp", CPG_FRQCRC,  0 },
+	{ NULL, 0, 0 },
 };
 
 static const struct clk_div_table div4_div_table[] = {
diff --git a/drivers/clk/renesas/clk-sh73a0.c b/drivers/clk/renesas/clk-sh73a0.c
index 8c51090f13..47fc99ccd2 100644
--- a/drivers/clk/renesas/clk-sh73a0.c
+++ b/drivers/clk/renesas/clk-sh73a0.c
@@ -34,8 +34,6 @@ struct sh73a0_cpg {
 #define CPG_DSI0PHYCR	0x6c
 #define CPG_DSI1PHYCR	0x70
 
-#define CLK_ENABLE_ON_INIT BIT(0)
-
 struct div4_clk {
 	const char *name;
 	const char *parent;
diff --git a/drivers/clk/renesas/r8a779h0-cpg-mssr.c b/drivers/clk/renesas/r8a779h0-cpg-mssr.c
index 71f67a1c86..079b55b30b 100644
--- a/drivers/clk/renesas/r8a779h0-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a779h0-cpg-mssr.c
@@ -184,14 +184,35 @@ static const struct mssr_mod_clk r8a779h0_mod_clks[] = {
 	DEF_MOD("i2c1",		519,	R8A779H0_CLK_S0D6_PER),
 	DEF_MOD("i2c2",		520,	R8A779H0_CLK_S0D6_PER),
 	DEF_MOD("i2c3",		521,	R8A779H0_CLK_S0D6_PER),
+	DEF_MOD("irqc",		611,	R8A779H0_CLK_CL16M),
+	DEF_MOD("msi0",		618,	R8A779H0_CLK_MSO),
+	DEF_MOD("msi1",		619,	R8A779H0_CLK_MSO),
+	DEF_MOD("msi2",		620,	R8A779H0_CLK_MSO),
+	DEF_MOD("msi3",		621,	R8A779H0_CLK_MSO),
+	DEF_MOD("msi4",		622,	R8A779H0_CLK_MSO),
+	DEF_MOD("msi5",		623,	R8A779H0_CLK_MSO),
 	DEF_MOD("rpc-if",	629,	R8A779H0_CLK_RPCD2),
+	DEF_MOD("scif0",	702,	R8A779H0_CLK_SASYNCPERD4),
+	DEF_MOD("scif1",	703,	R8A779H0_CLK_SASYNCPERD4),
+	DEF_MOD("scif3",	704,	R8A779H0_CLK_SASYNCPERD4),
+	DEF_MOD("scif4",	705,	R8A779H0_CLK_SASYNCPERD4),
 	DEF_MOD("sdhi0",	706,	R8A779H0_CLK_SD0),
 	DEF_MOD("sydm1",	709,	R8A779H0_CLK_S0D6_PER),
 	DEF_MOD("sydm2",	710,	R8A779H0_CLK_S0D6_PER),
+	DEF_MOD("tmu0",		713,	R8A779H0_CLK_SASYNCRT),
+	DEF_MOD("tmu1",		714,	R8A779H0_CLK_SASYNCPERD2),
+	DEF_MOD("tmu2",		715,	R8A779H0_CLK_SASYNCPERD2),
+	DEF_MOD("tmu3",		716,	R8A779H0_CLK_SASYNCPERD2),
+	DEF_MOD("tmu4",		717,	R8A779H0_CLK_SASYNCPERD2),
 	DEF_MOD("wdt1:wdt0",	907,	R8A779H0_CLK_R),
+	DEF_MOD("cmt0",		910,	R8A779H0_CLK_R),
+	DEF_MOD("cmt1",		911,	R8A779H0_CLK_R),
+	DEF_MOD("cmt2",		912,	R8A779H0_CLK_R),
+	DEF_MOD("cmt3",		913,	R8A779H0_CLK_R),
 	DEF_MOD("pfc0",		915,	R8A779H0_CLK_CP),
 	DEF_MOD("pfc1",		916,	R8A779H0_CLK_CP),
 	DEF_MOD("pfc2",		917,	R8A779H0_CLK_CP),
+	DEF_MOD("tsc2:tsc1",	919,	R8A779H0_CLK_CL16M),
 };
 
 /*
diff --git a/drivers/clk/renesas/r9a07g043-cpg.c b/drivers/clk/renesas/r9a07g043-cpg.c
index 26b71547fd..16acc95f3c 100644
--- a/drivers/clk/renesas/r9a07g043-cpg.c
+++ b/drivers/clk/renesas/r9a07g043-cpg.c
@@ -149,7 +149,7 @@ static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
 #endif
 };
 
-static struct rzg2l_mod_clk r9a07g043_mod_clks[] = {
+static const struct rzg2l_mod_clk r9a07g043_mod_clks[] = {
 #ifdef CONFIG_ARM64
 	DEF_MOD("gic",		R9A07G043_GIC600_GICCLK, R9A07G043_CLK_P1,
 				0x514, 0),
@@ -286,7 +286,7 @@ static struct rzg2l_mod_clk r9a07g043_mod_clks[] = {
 #endif
 };
 
-static struct rzg2l_reset r9a07g043_resets[] = {
+static const struct rzg2l_reset r9a07g043_resets[] = {
 #ifdef CONFIG_ARM64
 	DEF_RST(R9A07G043_GIC600_GICRESET_N, 0x814, 0),
 	DEF_RST(R9A07G043_GIC600_DBG_GICRESET_N, 0x814, 1),
diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index 48404cafea..f6df3f7a31 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -368,7 +368,7 @@ static const struct {
 #endif
 };
 
-static struct rzg2l_reset r9a07g044_resets[] = {
+static const struct rzg2l_reset r9a07g044_resets[] = {
 	DEF_RST(R9A07G044_GIC600_GICRESET_N, 0x814, 0),
 	DEF_RST(R9A07G044_GIC600_DBG_GICRESET_N, 0x814, 1),
 	DEF_RST(R9A07G044_IA55_RESETN, 0x818, 0),
diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
index c3e6da2de1..b068733b14 100644
--- a/drivers/clk/renesas/r9a08g045-cpg.c
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -240,6 +240,43 @@ static const unsigned int r9a08g045_crit_mod_clks[] __initconst = {
 	MOD_CLK_BASE + R9A08G045_DMAC_ACLK,
 };
 
+static const struct rzg2l_cpg_pm_domain_init_data r9a08g045_pm_domains[] = {
+	/* Keep always-on domain on the first position for proper domains registration. */
+	DEF_PD("always-on",	R9A08G045_PD_ALWAYS_ON,
+				DEF_REG_CONF(0, 0),
+				RZG2L_PD_F_ALWAYS_ON),
+	DEF_PD("gic",		R9A08G045_PD_GIC,
+				DEF_REG_CONF(CPG_BUS_ACPU_MSTOP, BIT(3)),
+				RZG2L_PD_F_ALWAYS_ON),
+	DEF_PD("ia55",		R9A08G045_PD_IA55,
+				DEF_REG_CONF(CPG_BUS_PERI_CPU_MSTOP, BIT(13)),
+				RZG2L_PD_F_ALWAYS_ON),
+	DEF_PD("dmac",		R9A08G045_PD_DMAC,
+				DEF_REG_CONF(CPG_BUS_REG1_MSTOP, GENMASK(3, 0)),
+				RZG2L_PD_F_ALWAYS_ON),
+	DEF_PD("wdt0",		R9A08G045_PD_WDT0,
+				DEF_REG_CONF(CPG_BUS_REG0_MSTOP, BIT(0)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("sdhi0",		R9A08G045_PD_SDHI0,
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(0)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("sdhi1",		R9A08G045_PD_SDHI1,
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(1)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("sdhi2",		R9A08G045_PD_SDHI2,
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(11)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("eth0",		R9A08G045_PD_ETHER0,
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(2)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("eth1",		R9A08G045_PD_ETHER1,
+				DEF_REG_CONF(CPG_BUS_PERI_COM_MSTOP, BIT(3)),
+				RZG2L_PD_F_NONE),
+	DEF_PD("scif0",		R9A08G045_PD_SCIF0,
+				DEF_REG_CONF(CPG_BUS_MCPU2_MSTOP, BIT(1)),
+				RZG2L_PD_F_NONE),
+};
+
 const struct rzg2l_cpg_info r9a08g045_cpg_info = {
 	/* Core Clocks */
 	.core_clks = r9a08g045_core_clks,
@@ -260,5 +297,9 @@ const struct rzg2l_cpg_info r9a08g045_cpg_info = {
 	.resets = r9a08g045_resets,
 	.num_resets = R9A08G045_VBAT_BRESETN + 1, /* Last reset ID + 1 */
 
+	/* Power domains */
+	.pm_domains = r9a08g045_pm_domains,
+	.num_pm_domains = ARRAY_SIZE(r9a08g045_pm_domains),
+
 	.has_clk_mon_regs = true,
 };
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 3d2daa4ba2..04b78064d4 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;
@@ -1618,30 +1640,179 @@ 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_priv *priv = pd->priv;
+
+	/* 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_priv *priv = pd->priv;
+
+	/* Set MSTOP. */
+	if (mstop.mask)
+		writel(mstop.mask | (mstop.mask << 16), priv->base + mstop.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;
+
+	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_simple, &pd->genpd);
+	if (ret)
+		return ret;
+
+	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;
 
-	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);
+	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;
 
-	ret = devm_add_action_or_reset(dev, rzg2l_cpg_genpd_remove, genpd);
+	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;
 
-	return of_genpd_add_provider_simple(np, genpd);
+	return 0;
 }
 
 static int __init rzg2l_cpg_probe(struct platform_device *pdev)
@@ -1697,7 +1868,7 @@ 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 6e38c8fc88..ecfe7e7ea8 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -27,6 +27,18 @@
 #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_OTHERFUNC1_REG	(0xBE8)
 
 #define CPG_SIPLL5_STBY_RESETB		BIT(0)
@@ -235,6 +247,55 @@ struct rzg2l_reset {
 	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
+ */
+struct rzg2l_cpg_pm_domain_conf {
+	struct rzg2l_cpg_reg_conf mstop;
+};
+
+/**
+ * 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, _flags) \
+	{ \
+		.name = (_name), \
+		.id = (_id), \
+		.conf = { \
+			.mstop = (_mstop_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
  *
  * @core_clks: Array of Core Clock definitions
@@ -252,6 +313,8 @@ 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
  * @has_clk_mon_regs: Flag indicating whether the SoC has CLK_MON registers
  */
 struct rzg2l_cpg_info {
@@ -278,6 +341,10 @@ 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 has_clk_mon_regs;
 };