Merge branches 'clk-cdce-regulator', 'clk-bcm', 'clk-evict-parent-cache' and...

Merge branches 'clk-cdce-regulator', 'clk-bcm', 'clk-evict-parent-cache' and 'clk-actions' into clk-next

 - Add regulator support to the cdce925 clk driver
 - Add support for Raspberry Pi 4 bcm2711 SoCs
 - Evict parents from parent cache when they're unregistered

* clk-cdce-regulator:
  clk: clk-cdce925: Add regulator support
  dt-bindings: clock: cdce925: Add regulator documentation

* clk-bcm:
  clk: bcm2835: Mark PLLD_PER as CRITICAL
  clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support
  clk: bcm2835: Introduce SoC specific clock registration
  dt-bindings: bcm2835-cprman: Add bcm2711 support

* clk-evict-parent-cache:
  clk: Evict unregistered clks from parent caches

* clk-actions:
  clk: actions: Fix factor clk struct member access

Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt

@@ -12,7 +12,9 @@ clock generators, but a few (like the ARM or HDMI) will source from
 the PLL dividers directly.
 
 Required properties:
-- compatible:	Should be "brcm,bcm2835-cprman"
+- compatible:	should be one of the following,
+	"brcm,bcm2711-cprman"
+	"brcm,bcm2835-cprman"
 - #clock-cells:	Should be <1>. The permitted clock-specifier values can be
 		  found in include/dt-bindings/clock/bcm2835.h
 - reg:		Specifies base physical address and size of the registers

Documentation/devicetree/bindings/clock/ti,cdce925.txt

@@ -24,6 +24,8 @@ Required properties:
 Optional properties:
  - xtal-load-pf: Crystal load-capacitor value to fine-tune performance on a
                  board, or to compensate for external influences.
+- vdd-supply: A regulator node for Vdd
+- vddout-supply: A regulator node for Vddout
 
 For all PLL1, PLL2, ... an optional child node can be used to specify spread
 spectrum clocking parameters for a board.
@@ -41,6 +43,8 @@ Example:
 		clocks = <&xtal_27Mhz>;
 		#clock-cells = <1>;
 		xtal-load-pf = <5>;
+		vdd-supply = <&1v8-reg>;
+		vddout-supply = <&3v3-reg>;
 		/* PLL options to get SSC 1% centered */
 		PLL2 {
 			spread-spectrum = <4>;

drivers/clk/actions/owl-factor.c

@@ -64,11 +64,10 @@ static unsigned int _get_table_val(const struct clk_factor_table *table,
 	return val;
 }
 
-static int clk_val_best(struct clk_hw *hw, unsigned long rate,
+static int owl_clk_val_best(const struct owl_factor_hw *factor_hw,
+			struct clk_hw *hw, unsigned long rate,
 			unsigned long *best_parent_rate)
 {
-	struct owl_factor *factor = hw_to_owl_factor(hw);
-	struct owl_factor_hw *factor_hw = &factor->factor_hw;
 	const struct clk_factor_table *clkt = factor_hw->table;
 	unsigned long parent_rate, try_parent_rate, best = 0, cur_rate;
 	unsigned long parent_rate_saved = *best_parent_rate;
@@ -126,7 +125,7 @@ long owl_factor_helper_round_rate(struct owl_clk_common *common,
 	const struct clk_factor_table *clkt = factor_hw->table;
 	unsigned int val, mul = 0, div = 1;
 
-	val = clk_val_best(&common->hw, rate, parent_rate);
+	val = owl_clk_val_best(factor_hw, &common->hw, rate, parent_rate);
 	_get_table_div_mul(clkt, val, &mul, &div);
 
 	return *parent_rate * mul / div;

drivers/clk/clk-cdce925.c

@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/gcd.h>
 
@@ -602,6 +603,30 @@ of_clk_cdce925_get(struct of_phandle_args *clkspec, void *_data)
 	return &data->clk[idx].hw;
 }
 
+static void cdce925_regulator_disable(void *regulator)
+{
+	regulator_disable(regulator);
+}
+
+static int cdce925_regulator_enable(struct device *dev, const char *name)
+{
+	struct regulator *regulator;
+	int err;
+
+	regulator = devm_regulator_get(dev, name);
+	if (IS_ERR(regulator))
+		return PTR_ERR(regulator);
+
+	err = regulator_enable(regulator);
+	if (err) {
+		dev_err(dev, "Failed to enable %s: %d\n", name, err);
+		return err;
+	}
+
+	return devm_add_action_or_reset(dev, cdce925_regulator_disable,
+					regulator);
+}
+
 /* The CDCE925 uses a funky way to read/write registers. Bulk mode is
  * just weird, so just use the single byte mode exclusively. */
 static struct regmap_bus regmap_cdce925_bus = {
@@ -630,6 +655,15 @@ static int cdce925_probe(struct i2c_client *client,
 	};
 
 	dev_dbg(&client->dev, "%s\n", __func__);
+
+	err = cdce925_regulator_enable(&client->dev, "vdd");
+	if (err)
+		return err;
+
+	err = cdce925_regulator_enable(&client->dev, "vddout");
+	if (err)
+		return err;
+
 	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;

drivers/clk/clk.c

@@ -37,6 +37,12 @@ static HLIST_HEAD(clk_root_list);
 static HLIST_HEAD(clk_orphan_list);
 static LIST_HEAD(clk_notifier_list);
 
+static struct hlist_head *all_lists[] = {
+	&clk_root_list,
+	&clk_orphan_list,
+	NULL,
+};
+
 /***    private data structures    ***/
 
 struct clk_parent_map {
@@ -2841,12 +2847,6 @@ static int inited = 0;
 static DEFINE_MUTEX(clk_debug_lock);
 static HLIST_HEAD(clk_debug_list);
 
-static struct hlist_head *all_lists[] = {
-	&clk_root_list,
-	&clk_orphan_list,
-	NULL,
-};
-
 static struct hlist_head *orphan_list[] = {
 	&clk_orphan_list,
 	NULL,
@@ -3777,6 +3777,34 @@ static const struct clk_ops clk_nodrv_ops = {
 	.set_parent	= clk_nodrv_set_parent,
 };
 
+static void clk_core_evict_parent_cache_subtree(struct clk_core *root,
+						struct clk_core *target)
+{
+	int i;
+	struct clk_core *child;
+
+	for (i = 0; i < root->num_parents; i++)
+		if (root->parents[i].core == target)
+			root->parents[i].core = NULL;
+
+	hlist_for_each_entry(child, &root->children, child_node)
+		clk_core_evict_parent_cache_subtree(child, target);
+}
+
+/* Remove this clk from all parent caches */
+static void clk_core_evict_parent_cache(struct clk_core *core)
+{
+	struct hlist_head **lists;
+	struct clk_core *root;
+
+	lockdep_assert_held(&prepare_lock);
+
+	for (lists = all_lists; *lists; lists++)
+		hlist_for_each_entry(root, *lists, child_node)
+			clk_core_evict_parent_cache_subtree(root, core);
+
+}
+
 /**
  * clk_unregister - unregister a currently registered clock
  * @clk: clock to unregister
@@ -3815,6 +3843,8 @@ void clk_unregister(struct clk *clk)
 			clk_core_set_parent_nolock(child, NULL);
 	}
 
+	clk_core_evict_parent_cache(clk->core);
+
 	hlist_del_init(&clk->core->child_node);
 
 	if (clk->core->prepare_count)

include/dt-bindings/clock/bcm2835.h

@@ -58,3 +58,5 @@
 #define BCM2835_CLOCK_DSI1E		48
 #define BCM2835_CLOCK_DSI0P		49
 #define BCM2835_CLOCK_DSI1P		50
+
+#define BCM2711_CLOCK_EMMC2		51