Merge tag 'omap-for-v5.2/dt-ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/dt

Devicetree changes for omap4 and 5 l4 abe interconnect

This series of devicetree changes adds the l4 abe interconnect devices
and moves the devices to their right places in the hierarchy similar
to what we've already done for most l4 devices earlier. We first add
a shared omap4-mcpdm.dtsi to make adding omap4-l4-abe.dtsi easier for
the mcpdm changes. And as earlier, in case of unexpected trouble,
devices can be probed the old way by moving one device at a time to the
old place.

This series of changes depends on the ti-sysc driver changes for handling
the external optional clocks that the mcpdm relies on, and is based on
the related ti-sysc driver changes. Note that this series does not depend
on dropping of the leagcy platform data, but I already had those committed
along with the ti-sysc driver changes and noticed too late.

* tag 'omap-for-v5.2/dt-ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (44 commits)
  ARM: dts: Add l4 abe interconnect hierarchy and ti-sysc data for omap5
  ARM: dts: Add l4 abe interconnect hierarchy and ti-sysc data for omap4
  ARM: dts: Add common mcpdm dts file for omap4
  bus: ti-sysc: Add generic enable/disable functions
  ARM: OMAP2+: Drop mcspi platform data for omap4
  ARM: OMAP2+: Drop uart platform data for dra7
  ARM: OMAP2+: Drop gpio platform data for dra7
  ARM: OMAP2+: Drop i2c platform data for dra7
  ARM: OMAP2+: Drop mmc platform data for dra7
  ARM: OMAP2+: Drop uart platform data for omap5
  ARM: OMAP2+: Drop gpio platform data for omap5
  ARM: OMAP2+: Drop i2c platform data for omap5
  ARM: OMAP2+: Drop mmc platform data for omap5
  ARM: OMAP2+: Drop uart platform data for am33xx and am43xx
  ARM: OMAP2+: Drop gpio platform data for am33xx and am43xx
  ARM: OMAP2+: Drop i2c platform data for am33xx and am43xx
  ARM: OMAP2+: Drop mmc platform data for am330x and am43xx
  ARM: OMAP2+: Drop uart platform data for omap4
  ARM: OMAP2+: Drop gpio platform data for omap4
  ARM: OMAP2+: Drop i2c platform data for omap4
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 548 insertions, 113 deletions

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index d299ec79e4c3..308475ed4b32 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -47,7 +47,10 @@ enum sysc_clocks {
 	SYSC_MAX_CLOCKS,
 };
 
-static const char * const clock_names[SYSC_ICK + 1] = { "fck", "ick", };
+static const char * const clock_names[SYSC_MAX_CLOCKS] = {
+	"fck", "ick", "opt0", "opt1", "opt2", "opt3", "opt4",
+	"opt5", "opt6", "opt7",
+};
 
 #define SYSC_IDLEMODE_MASK		3
 #define SYSC_CLOCKACTIVITY_MASK		3
@@ -75,6 +78,7 @@ struct sysc {
 	u32 module_size;
 	void __iomem *module_va;
 	int offsets[SYSC_MAX_REGS];
+	struct ti_sysc_module_data *mdata;
 	struct clk **clocks;
 	const char **clock_roles;
 	int nr_clocks;
@@ -94,7 +98,7 @@ struct sysc {
 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
 				  bool is_child);
 
-void sysc_write(struct sysc *ddata, int offset, u32 value)
+static void sysc_write(struct sysc *ddata, int offset, u32 value)
 {
 	writel_relaxed(value, ddata->module_va + offset);
 }
@@ -128,6 +132,81 @@ static u32 sysc_read_revision(struct sysc *ddata)
 	return sysc_read(ddata, offset);
 }
 
+static int sysc_add_named_clock_from_child(struct sysc *ddata,
+					   const char *name,
+					   const char *optfck_name)
+{
+	struct device_node *np = ddata->dev->of_node;
+	struct device_node *child;
+	struct clk_lookup *cl;
+	struct clk *clock;
+	const char *n;
+
+	if (name)
+		n = name;
+	else
+		n = optfck_name;
+
+	/* Does the clock alias already exist? */
+	clock = of_clk_get_by_name(np, n);
+	if (!IS_ERR(clock)) {
+		clk_put(clock);
+
+		return 0;
+	}
+
+	child = of_get_next_available_child(np, NULL);
+	if (!child)
+		return -ENODEV;
+
+	clock = devm_get_clk_from_child(ddata->dev, child, name);
+	if (IS_ERR(clock))
+		return PTR_ERR(clock);
+
+	/*
+	 * Use clkdev_add() instead of clkdev_alloc() to avoid the MAX_DEV_ID
+	 * limit for clk_get(). If cl ever needs to be freed, it should be done
+	 * with clkdev_drop().
+	 */
+	cl = kcalloc(1, sizeof(*cl), GFP_KERNEL);
+	if (!cl)
+		return -ENOMEM;
+
+	cl->con_id = n;
+	cl->dev_id = dev_name(ddata->dev);
+	cl->clk = clock;
+	clkdev_add(cl);
+
+	clk_put(clock);
+
+	return 0;
+}
+
+static int sysc_init_ext_opt_clock(struct sysc *ddata, const char *name)
+{
+	const char *optfck_name;
+	int error, index;
+
+	if (ddata->nr_clocks < SYSC_OPTFCK0)
+		index = SYSC_OPTFCK0;
+	else
+		index = ddata->nr_clocks;
+
+	if (name)
+		optfck_name = name;
+	else
+		optfck_name = clock_names[index];
+
+	error = sysc_add_named_clock_from_child(ddata, name, optfck_name);
+	if (error)
+		return error;
+
+	ddata->clock_roles[index] = optfck_name;
+	ddata->nr_clocks++;
+
+	return 0;
+}
+
 static int sysc_get_one_clock(struct sysc *ddata, const char *name)
 {
 	int error, i, index = -ENODEV;
@@ -199,6 +278,12 @@ static int sysc_get_clocks(struct sysc *ddata)
 	if (ddata->nr_clocks < 1)
 		return 0;
 
+	if ((ddata->cfg.quirks & SYSC_QUIRK_EXT_OPT_CLOCK)) {
+		error = sysc_init_ext_opt_clock(ddata, NULL);
+		if (error)
+			return error;
+	}
+
 	if (ddata->nr_clocks > SYSC_MAX_CLOCKS) {
 		dev_err(ddata->dev, "too many clocks for %pOF\n", np);
 
@@ -231,39 +316,125 @@ static int sysc_get_clocks(struct sysc *ddata)
 	return 0;
 }
 
+static int sysc_enable_main_clocks(struct sysc *ddata)
+{
+	struct clk *clock;
+	int i, error;
+
+	if (!ddata->clocks)
+		return 0;
+
+	for (i = 0; i < SYSC_OPTFCK0; i++) {
+		clock = ddata->clocks[i];
+
+		/* Main clocks may not have ick */
+		if (IS_ERR_OR_NULL(clock))
+			continue;
+
+		error = clk_enable(clock);
+		if (error)
+			goto err_disable;
+	}
+
+	return 0;
+
+err_disable:
+	for (i--; i >= 0; i--) {
+		clock = ddata->clocks[i];
+
+		/* Main clocks may not have ick */
+		if (IS_ERR_OR_NULL(clock))
+			continue;
+
+		clk_disable(clock);
+	}
+
+	return error;
+}
+
+static void sysc_disable_main_clocks(struct sysc *ddata)
+{
+	struct clk *clock;
+	int i;
+
+	if (!ddata->clocks)
+		return;
+
+	for (i = 0; i < SYSC_OPTFCK0; i++) {
+		clock = ddata->clocks[i];
+		if (IS_ERR_OR_NULL(clock))
+			continue;
+
+		clk_disable(clock);
+	}
+}
+
+static int sysc_enable_opt_clocks(struct sysc *ddata)
+{
+	struct clk *clock;
+	int i, error;
+
+	if (!ddata->clocks)
+		return 0;
+
+	for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) {
+		clock = ddata->clocks[i];
+
+		/* Assume no holes for opt clocks */
+		if (IS_ERR_OR_NULL(clock))
+			return 0;
+
+		error = clk_enable(clock);
+		if (error)
+			goto err_disable;
+	}
+
+	return 0;
+
+err_disable:
+	for (i--; i >= 0; i--) {
+		clock = ddata->clocks[i];
+		if (IS_ERR_OR_NULL(clock))
+			continue;
+
+		clk_disable(clock);
+	}
+
+	return error;
+}
+
+static void sysc_disable_opt_clocks(struct sysc *ddata)
+{
+	struct clk *clock;
+	int i;
+
+	if (!ddata->clocks)
+		return;
+
+	for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) {
+		clock = ddata->clocks[i];
+
+		/* Assume no holes for opt clocks */
+		if (IS_ERR_OR_NULL(clock))
+			return;
+
+		clk_disable(clock);
+	}
+}
+
 /**
- * sysc_init_resets - reset module on init
+ * sysc_init_resets - init rstctrl reset line if configured
  * @ddata: device driver data
  *
- * A module can have both OCP softreset control and external rstctrl.
- * If more complicated rstctrl resets are needed, please handle these
- * directly from the child device driver and map only the module reset
- * for the parent interconnect target module device.
- *
- * Automatic reset of the module on init can be skipped with the
- * "ti,no-reset-on-init" device tree property.
+ * See sysc_rstctrl_reset_deassert().
  */
 static int sysc_init_resets(struct sysc *ddata)
 {
-	int error;
-
 	ddata->rsts =
 		devm_reset_control_array_get_optional_exclusive(ddata->dev);
 	if (IS_ERR(ddata->rsts))
 		return PTR_ERR(ddata->rsts);
 
-	if (ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)
-		goto deassert;
-
-	error = reset_control_assert(ddata->rsts);
-	if (error)
-		return error;
-
-deassert:
-	error = reset_control_deassert(ddata->rsts);
-	if (error)
-		return error;
-
 	return 0;
 }
 
@@ -622,91 +793,239 @@ static void sysc_show_registers(struct sysc *ddata)
 		buf);
 }
 
-static int __maybe_unused sysc_runtime_suspend(struct device *dev)
+#define SYSC_IDLE_MASK	(SYSC_NR_IDLEMODES - 1)
+
+static int sysc_enable_module(struct device *dev)
 {
-	struct ti_sysc_platform_data *pdata;
 	struct sysc *ddata;
-	int error = 0, i;
+	const struct sysc_regbits *regbits;
+	u32 reg, idlemodes, best_mode;
 
 	ddata = dev_get_drvdata(dev);
+	if (ddata->offsets[SYSC_SYSCONFIG] == -ENODEV)
+		return 0;
 
-	if (!ddata->enabled)
+	/*
+	 * TODO: Need to prevent clockdomain autoidle?
+	 * See clkdm_deny_idle() in arch/mach-omap2/omap_hwmod.c
+	 */
+
+	regbits = ddata->cap->regbits;
+	reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]);
+
+	/* Set SIDLE mode */
+	idlemodes = ddata->cfg.sidlemodes;
+	if (!idlemodes || regbits->sidle_shift < 0)
+		goto set_midle;
+
+	best_mode = fls(ddata->cfg.sidlemodes) - 1;
+	if (best_mode > SYSC_IDLE_MASK) {
+		dev_err(dev, "%s: invalid sidlemode\n", __func__);
+		return -EINVAL;
+	}
+
+	reg &= ~(SYSC_IDLE_MASK << regbits->sidle_shift);
+	reg |= best_mode << regbits->sidle_shift;
+	sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);
+
+set_midle:
+	/* Set MIDLE mode */
+	idlemodes = ddata->cfg.midlemodes;
+	if (!idlemodes || regbits->midle_shift < 0)
 		return 0;
 
-	if (ddata->legacy_mode) {
-		pdata = dev_get_platdata(ddata->dev);
-		if (!pdata)
-			return 0;
+	best_mode = fls(ddata->cfg.midlemodes) - 1;
+	if (best_mode > SYSC_IDLE_MASK) {
+		dev_err(dev, "%s: invalid midlemode\n", __func__);
+		return -EINVAL;
+	}
 
-		if (!pdata->idle_module)
-			return -ENODEV;
+	reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift);
+	reg |= best_mode << regbits->midle_shift;
+	sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);
 
-		error = pdata->idle_module(dev, &ddata->cookie);
-		if (error)
-			dev_err(dev, "%s: could not idle: %i\n",
-				__func__, error);
+	return 0;
+}
+
+static int sysc_best_idle_mode(u32 idlemodes, u32 *best_mode)
+{
+	if (idlemodes & BIT(SYSC_IDLE_SMART_WKUP))
+		*best_mode = SYSC_IDLE_SMART_WKUP;
+	else if (idlemodes & BIT(SYSC_IDLE_SMART))
+		*best_mode = SYSC_IDLE_SMART;
+	else if (idlemodes & SYSC_IDLE_FORCE)
+		*best_mode = SYSC_IDLE_FORCE;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static int sysc_disable_module(struct device *dev)
+{
+	struct sysc *ddata;
+	const struct sysc_regbits *regbits;
+	u32 reg, idlemodes, best_mode;
+	int ret;
 
-		goto idled;
+	ddata = dev_get_drvdata(dev);
+	if (ddata->offsets[SYSC_SYSCONFIG] == -ENODEV)
+		return 0;
+
+	/*
+	 * TODO: Need to prevent clockdomain autoidle?
+	 * See clkdm_deny_idle() in arch/mach-omap2/omap_hwmod.c
+	 */
+
+	regbits = ddata->cap->regbits;
+	reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]);
+
+	/* Set MIDLE mode */
+	idlemodes = ddata->cfg.midlemodes;
+	if (!idlemodes || regbits->midle_shift < 0)
+		goto set_sidle;
+
+	ret = sysc_best_idle_mode(idlemodes, &best_mode);
+	if (ret) {
+		dev_err(dev, "%s: invalid midlemode\n", __func__);
+		return ret;
 	}
 
-	for (i = 0; i < ddata->nr_clocks; i++) {
-		if (IS_ERR_OR_NULL(ddata->clocks[i]))
-			continue;
+	reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift);
+	reg |= best_mode << regbits->midle_shift;
+	sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);
 
-		if (i >= SYSC_OPTFCK0 && !sysc_opt_clks_needed(ddata))
-			break;
+set_sidle:
+	/* Set SIDLE mode */
+	idlemodes = ddata->cfg.sidlemodes;
+	if (!idlemodes || regbits->sidle_shift < 0)
+		return 0;
 
-		clk_disable(ddata->clocks[i]);
+	ret = sysc_best_idle_mode(idlemodes, &best_mode);
+	if (ret) {
+		dev_err(dev, "%s: invalid sidlemode\n", __func__);
+		return ret;
 	}
 
-idled:
-	ddata->enabled = false;
+	reg &= ~(SYSC_IDLE_MASK << regbits->sidle_shift);
+	reg |= best_mode << regbits->sidle_shift;
+	sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg);
 
-	return error;
+	return 0;
 }
 
-static int __maybe_unused sysc_runtime_resume(struct device *dev)
+static int __maybe_unused sysc_runtime_suspend_legacy(struct device *dev,
+						      struct sysc *ddata)
 {
 	struct ti_sysc_platform_data *pdata;
+	int error;
+
+	pdata = dev_get_platdata(ddata->dev);
+	if (!pdata)
+		return 0;
+
+	if (!pdata->idle_module)
+		return -ENODEV;
+
+	error = pdata->idle_module(dev, &ddata->cookie);
+	if (error)
+		dev_err(dev, "%s: could not idle: %i\n",
+			__func__, error);
+
+	return 0;
+}
+
+static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev,
+						     struct sysc *ddata)
+{
+	struct ti_sysc_platform_data *pdata;
+	int error;
+
+	pdata = dev_get_platdata(ddata->dev);
+	if (!pdata)
+		return 0;
+
+	if (!pdata->enable_module)
+		return -ENODEV;
+
+	error = pdata->enable_module(dev, &ddata->cookie);
+	if (error)
+		dev_err(dev, "%s: could not enable: %i\n",
+			__func__, error);
+
+	return 0;
+}
+
+static int __maybe_unused sysc_runtime_suspend(struct device *dev)
+{
 	struct sysc *ddata;
-	int error = 0, i;
+	int error = 0;
 
 	ddata = dev_get_drvdata(dev);
 
-	if (ddata->enabled)
+	if (!ddata->enabled)
 		return 0;
 
 	if (ddata->legacy_mode) {
-		pdata = dev_get_platdata(ddata->dev);
-		if (!pdata)
-			return 0;
+		error = sysc_runtime_suspend_legacy(dev, ddata);
+		if (error)
+			return error;
+	} else {
+		error = sysc_disable_module(dev);
+		if (error)
+			return error;
+	}
 
-		if (!pdata->enable_module)
-			return -ENODEV;
+	sysc_disable_main_clocks(ddata);
 
-		error = pdata->enable_module(dev, &ddata->cookie);
-		if (error)
-			dev_err(dev, "%s: could not enable: %i\n",
-				__func__, error);
+	if (sysc_opt_clks_needed(ddata))
+		sysc_disable_opt_clocks(ddata);
 
-		goto awake;
-	}
+	ddata->enabled = false;
 
-	for (i = 0; i < ddata->nr_clocks; i++) {
-		if (IS_ERR_OR_NULL(ddata->clocks[i]))
-			continue;
+	return error;
+}
 
-		if (i >= SYSC_OPTFCK0 && !sysc_opt_clks_needed(ddata))
-			break;
+static int __maybe_unused sysc_runtime_resume(struct device *dev)
+{
+	struct sysc *ddata;
+	int error = 0;
+
+	ddata = dev_get_drvdata(dev);
 
-		error = clk_enable(ddata->clocks[i]);
+	if (ddata->enabled)
+		return 0;
+
+	if (sysc_opt_clks_needed(ddata)) {
+		error = sysc_enable_opt_clocks(ddata);
 		if (error)
 			return error;
 	}
 
-awake:
+	error = sysc_enable_main_clocks(ddata);
+	if (error)
+		goto err_opt_clocks;
+
+	if (ddata->legacy_mode) {
+		error = sysc_runtime_resume_legacy(dev, ddata);
+		if (error)
+			goto err_main_clocks;
+	} else {
+		error = sysc_enable_module(dev);
+		if (error)
+			goto err_main_clocks;
+	}
+
 	ddata->enabled = true;
 
+	return 0;
+
+err_main_clocks:
+	sysc_disable_main_clocks(ddata);
+err_opt_clocks:
+	if (sysc_opt_clks_needed(ddata))
+		sysc_disable_opt_clocks(ddata);
+
 	return error;
 }
 
@@ -788,12 +1107,17 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
 	SYSC_QUIRK("timer", 0, 0, 0x10, -1, 0x4fff1301, 0xffff00ff,
 		   0),
 	SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000052, 0xffffffff,
-		   SYSC_QUIRK_LEGACY_IDLE),
+		   SYSC_QUIRK_SWSUP_SIDLE_ACT | SYSC_QUIRK_LEGACY_IDLE),
 	/* Uarts on omap4 and later */
 	SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x50411e03, 0xffff00ff,
-		   SYSC_QUIRK_LEGACY_IDLE),
+		   SYSC_QUIRK_SWSUP_SIDLE_ACT | SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x47422e03, 0xffffffff,
-		   SYSC_QUIRK_LEGACY_IDLE),
+		   SYSC_QUIRK_SWSUP_SIDLE_ACT | SYSC_QUIRK_LEGACY_IDLE),
+
+	/* Quirks that need to be set based on the module address */
+	SYSC_QUIRK("mcpdm", 0x40132000, 0, 0x10, -1, 0x50000800, 0xffffffff,
+		   SYSC_QUIRK_EXT_OPT_CLOCK | SYSC_QUIRK_NO_RESET_ON_INIT |
+		   SYSC_QUIRK_SWSUP_SIDLE),
 
 #ifdef DEBUG
 	SYSC_QUIRK("adc", 0, 0, 0x10, -1, 0x47300001, 0xffffffff, 0),
@@ -805,6 +1129,7 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
 		   0xffff00f0, 0),
 	SYSC_QUIRK("dcan", 0, 0, -1, -1, 0xffffffff, 0xffffffff, 0),
 	SYSC_QUIRK("dcan", 0, 0, -1, -1, 0x00001401, 0xffffffff, 0),
+	SYSC_QUIRK("dmic", 0, 0, 0x10, -1, 0x50010000, 0xffffffff, 0),
 	SYSC_QUIRK("dwc3", 0, 0, 0x10, -1, 0x500a0200, 0xffffffff, 0),
 	SYSC_QUIRK("epwmss", 0, 0, 0x4, -1, 0x47400001, 0xffffffff, 0),
 	SYSC_QUIRK("gpu", 0, 0x1fc00, 0x1fc10, -1, 0, 0, 0),
@@ -853,6 +1178,42 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
 #endif
 };
 
+/*
+ * Early quirks based on module base and register offsets only that are
+ * needed before the module revision can be read
+ */
+static void sysc_init_early_quirks(struct sysc *ddata)
+{
+	const struct sysc_revision_quirk *q;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sysc_revision_quirks); i++) {
+		q = &sysc_revision_quirks[i];
+
+		if (!q->base)
+			continue;
+
+		if (q->base != ddata->module_pa)
+			continue;
+
+		if (q->rev_offset >= 0 &&
+		    q->rev_offset != ddata->offsets[SYSC_REVISION])
+			continue;
+
+		if (q->sysc_offset >= 0 &&
+		    q->sysc_offset != ddata->offsets[SYSC_SYSCONFIG])
+			continue;
+
+		if (q->syss_offset >= 0 &&
+		    q->syss_offset != ddata->offsets[SYSC_SYSSTATUS])
+			continue;
+
+		ddata->name = q->name;
+		ddata->cfg.quirks |= q->quirks;
+	}
+}
+
+/* Quirks that also consider the revision register value */
 static void sysc_init_revision_quirks(struct sysc *ddata)
 {
 	const struct sysc_revision_quirk *q;
@@ -885,6 +1246,55 @@ static void sysc_init_revision_quirks(struct sysc *ddata)
 	}
 }
 
+/*
+ * Note that pdata->init_module() typically does a reset first. After
+ * pdata->init_module() is done, PM runtime can be used for the interconnect
+ * target module.
+ */
+static int sysc_legacy_init(struct sysc *ddata)
+{
+	struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
+	int error;
+
+	if (!ddata->legacy_mode || !pdata || !pdata->init_module)
+		return 0;
+
+	error = pdata->init_module(ddata->dev, ddata->mdata, &ddata->cookie);
+	if (error == -EEXIST)
+		error = 0;
+
+	return error;
+}
+
+/**
+ * sysc_rstctrl_reset_deassert - deassert rstctrl reset
+ * @ddata: device driver data
+ * @reset: reset before deassert
+ *
+ * A module can have both OCP softreset control and external rstctrl.
+ * If more complicated rstctrl resets are needed, please handle these
+ * directly from the child device driver and map only the module reset
+ * for the parent interconnect target module device.
+ *
+ * Automatic reset of the module on init can be skipped with the
+ * "ti,no-reset-on-init" device tree property.
+ */
+static int sysc_rstctrl_reset_deassert(struct sysc *ddata, bool reset)
+{
+	int error;
+
+	if (!ddata->rsts)
+		return 0;
+
+	if (reset) {
+		error = reset_control_assert(ddata->rsts);
+		if (error)
+			return error;
+	}
+
+	return reset_control_deassert(ddata->rsts);
+}
+
 static int sysc_reset(struct sysc *ddata)
 {
 	int offset = ddata->offsets[SYSC_SYSCONFIG];
@@ -915,38 +1325,58 @@ static int sysc_reset(struct sysc *ddata)
 				  100, MAX_MODULE_SOFTRESET_WAIT);
 }
 
-/* At this point the module is configured enough to read the revision */
+/*
+ * At this point the module is configured enough to read the revision but
+ * module may not be completely configured yet to use PM runtime. Enable
+ * all clocks directly during init to configure the quirks needed for PM
+ * runtime based on the revision register.
+ */
 static int sysc_init_module(struct sysc *ddata)
 {
-	int error;
+	int error = 0;
+	bool manage_clocks = true;
+	bool reset = true;
 
-	if (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE_ON_INIT) {
-		ddata->revision = sysc_read_revision(ddata);
-		goto rev_quirks;
-	}
+	if (ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)
+		reset = false;
 
-	error = pm_runtime_get_sync(ddata->dev);
-	if (error < 0) {
-		pm_runtime_put_noidle(ddata->dev);
+	error = sysc_rstctrl_reset_deassert(ddata, reset);
+	if (error)
+		return error;
 
-		return 0;
-	}
+	if (ddata->cfg.quirks &
+	    (SYSC_QUIRK_NO_IDLE | SYSC_QUIRK_NO_IDLE_ON_INIT))
+		manage_clocks = false;
 
-	error = sysc_reset(ddata);
-	if (error) {
-		dev_err(ddata->dev, "Reset failed with %d\n", error);
-		pm_runtime_put_sync(ddata->dev);
+	if (manage_clocks) {
+		error = sysc_enable_opt_clocks(ddata);
+		if (error)
+			return error;
 
-		return error;
+		error = sysc_enable_main_clocks(ddata);
+		if (error)
+			goto err_opt_clocks;
 	}
 
 	ddata->revision = sysc_read_revision(ddata);
-	pm_runtime_put_sync(ddata->dev);
-
-rev_quirks:
 	sysc_init_revision_quirks(ddata);
 
-	return 0;
+	error = sysc_legacy_init(ddata);
+	if (error)
+		goto err_main_clocks;
+
+	error = sysc_reset(ddata);
+	if (error)
+		dev_err(ddata->dev, "Reset failed with %d\n", error);
+
+err_main_clocks:
+	if (manage_clocks)
+		sysc_disable_main_clocks(ddata);
+err_opt_clocks:
+	if (manage_clocks)
+		sysc_disable_opt_clocks(ddata);
+
+	return error;
 }
 
 static int sysc_init_sysc_mask(struct sysc *ddata)
@@ -1208,7 +1638,7 @@ static int sysc_child_resume_noirq(struct device *dev)
 }
 #endif
 
-struct dev_pm_domain sysc_child_pm_domain = {
+static struct dev_pm_domain sysc_child_pm_domain = {
 	.ops = {
 		SET_RUNTIME_PM_OPS(sysc_child_runtime_suspend,
 				   sysc_child_runtime_resume,
@@ -1281,6 +1711,8 @@ static const struct sysc_dts_quirk sysc_dts_quirks[] = {
 	  .mask = SYSC_QUIRK_NO_IDLE_ON_INIT, },
 	{ .name = "ti,no-reset-on-init",
 	  .mask = SYSC_QUIRK_NO_RESET_ON_INIT, },
+	{ .name = "ti,no-idle",
+	  .mask = SYSC_QUIRK_NO_IDLE, },
 };
 
 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
@@ -1331,6 +1763,9 @@ static void sysc_unprepare(struct sysc *ddata)
 {
 	int i;
 
+	if (!ddata->clocks)
+		return;
+
 	for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
 		if (!IS_ERR_OR_NULL(ddata->clocks[i]))
 			clk_unprepare(ddata->clocks[i]);
@@ -1576,28 +2011,26 @@ static const struct sysc_capabilities sysc_dra7_mcan = {
 static int sysc_init_pdata(struct sysc *ddata)
 {
 	struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
-	struct ti_sysc_module_data mdata;
-	int error = 0;
+	struct ti_sysc_module_data *mdata;
 
 	if (!pdata || !ddata->legacy_mode)
 		return 0;
 
-	mdata.name = ddata->legacy_mode;
-	mdata.module_pa = ddata->module_pa;
-	mdata.module_size = ddata->module_size;
-	mdata.offsets = ddata->offsets;
-	mdata.nr_offsets = SYSC_MAX_REGS;
-	mdata.cap = ddata->cap;
-	mdata.cfg = &ddata->cfg;
+	mdata = devm_kzalloc(ddata->dev, sizeof(*mdata), GFP_KERNEL);
+	if (!mdata)
+		return -ENOMEM;
 
-	if (!pdata->init_module)
-		return -ENODEV;
+	mdata->name = ddata->legacy_mode;
+	mdata->module_pa = ddata->module_pa;
+	mdata->module_size = ddata->module_size;
+	mdata->offsets = ddata->offsets;
+	mdata->nr_offsets = SYSC_MAX_REGS;
+	mdata->cap = ddata->cap;
+	mdata->cfg = &ddata->cfg;
 
-	error = pdata->init_module(ddata->dev, &mdata, &ddata->cookie);
-	if (error == -EEXIST)
-		error = 0;
+	ddata->mdata = mdata;
 
-	return error;
+	return 0;
 }
 
 static int sysc_init_match(struct sysc *ddata)
@@ -1651,10 +2084,6 @@ static int sysc_probe(struct platform_device *pdev)
 	if (error)
 		goto unprepare;
 
-	error = sysc_get_clocks(ddata);
-	if (error)
-		return error;
-
 	error = sysc_map_and_check_registers(ddata);
 	if (error)
 		goto unprepare;
@@ -1675,15 +2104,21 @@ static int sysc_probe(struct platform_device *pdev)
 	if (error)
 		goto unprepare;
 
+	sysc_init_early_quirks(ddata);
+
+	error = sysc_get_clocks(ddata);
+	if (error)
+		return error;
+
 	error = sysc_init_resets(ddata);
 	if (error)
 		return error;
 
-	pm_runtime_enable(ddata->dev);
 	error = sysc_init_module(ddata);
 	if (error)
 		goto unprepare;
 
+	pm_runtime_enable(ddata->dev);
 	error = pm_runtime_get_sync(ddata->dev);
 	if (error < 0) {
 		pm_runtime_put_noidle(ddata->dev);