Merge tag 'sunxi-clk-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-allwinner

Pull Allwinner clk driver updates from Chen-Yu Tsai:

 - Add Allwinner A523's missing PPU0 reset (both DT binding and
   driver) The binding change is shared with the soc tree.
 - Fix Allwinner V3s DE clock mux field width
 - Stop passing rate change requests to parent for Allwinner V3s
   DE clock
 - Force and lock Allwinner V3s DE and TCON clocks to the same
   parent, the video PLL

* tag 'sunxi-clk-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  clk: sunxi-ng: ccu_nm: convert from round_rate() to determine_rate()
  clk: sunxi-ng: ccu_nkmp: convert from round_rate() to determine_rate()
  clk: sunxi-ng: ccu_nk: convert from round_rate() to determine_rate()
  clk: sunxi-ng: ccu_gate: convert from round_rate() to determine_rate()
  clk: sunxi-ng: v3s: Assign the de and tcon clocks to the video pll
  clk: sunxi-ng: v3s: Fix de clock definition
  clk: sunxi-ng: sun55i-a523-r-ccu: Add missing PPU0 reset
  dt-bindings: reset: sun55i-a523-r-ccu: Add missing PPU0 reset

Author: bebarino

drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c

@@ -204,6 +204,7 @@ static struct ccu_reset_map sun55i_a523_r_ccu_resets[] = {
 	[RST_BUS_R_IR_RX]	= { 0x1cc, BIT(16) },
 	[RST_BUS_R_RTC]		= { 0x20c, BIT(16) },
 	[RST_BUS_R_CPUCFG]	= { 0x22c, BIT(16) },
+	[RST_BUS_R_PPU0]	= { 0x1ac, BIT(16) },
 };
 
 static const struct sunxi_ccu_desc sun55i_a523_r_ccu_desc = {

drivers/clk/sunxi-ng/ccu-sun8i-v3s.c

@@ -347,12 +347,13 @@ static SUNXI_CCU_GATE(dram_ohci_clk,	"dram-ohci",	"dram",
 
 static const char * const de_parents[] = { "pll-video", "pll-periph0" };
 static SUNXI_CCU_M_WITH_MUX_GATE(de_clk, "de", de_parents,
-				 0x104, 0, 4, 24, 2, BIT(31),
-				 CLK_SET_RATE_PARENT);
+				 0x104, 0, 4, 24, 3, BIT(31),
+				 CLK_SET_RATE_NO_REPARENT);
 
 static const char * const tcon_parents[] = { "pll-video" };
 static SUNXI_CCU_M_WITH_MUX_GATE(tcon_clk, "tcon", tcon_parents,
-				 0x118, 0, 4, 24, 3, BIT(31), 0);
+				 0x118, 0, 4, 24, 3, BIT(31),
+				 CLK_SET_RATE_NO_REPARENT);
 
 static SUNXI_CCU_GATE(csi_misc_clk,	"csi-misc",	"osc24M",
 		      0x130, BIT(31), 0);
@@ -754,6 +755,21 @@ static int sun8i_v3s_ccu_probe(struct platform_device *pdev)
 	val &= ~GENMASK(19, 16);
 	writel(val, reg + SUN8I_V3S_PLL_AUDIO_REG);
 
+	/*
+	 * Assign the DE and TCON clock to the video PLL. Both clocks need to
+	 * have the same parent for the units to work together.
+	 */
+
+	val = readl(reg + de_clk.common.reg);
+	val &= ~GENMASK(de_clk.mux.shift + de_clk.mux.width - 1,
+			de_clk.mux.shift);
+	writel(val, reg + de_clk.common.reg);
+
+	val = readl(reg + tcon_clk.common.reg);
+	val &= ~GENMASK(tcon_clk.mux.shift + tcon_clk.mux.width - 1,
+			tcon_clk.mux.shift);
+	writel(val, reg + tcon_clk.common.reg);
+
 	return devm_sunxi_ccu_probe(&pdev->dev, reg, desc);
 }
 

drivers/clk/sunxi-ng/ccu_gate.c

@@ -91,8 +91,8 @@ static unsigned long ccu_gate_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long ccu_gate_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static int ccu_gate_determine_rate(struct clk_hw *hw,
+				   struct clk_rate_request *req)
 {
 	struct ccu_gate *cg = hw_to_ccu_gate(hw);
 	int div = 1;
@@ -101,14 +101,16 @@ static long ccu_gate_round_rate(struct clk_hw *hw, unsigned long rate,
 		div = cg->common.prediv;
 
 	if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
-		unsigned long best_parent = rate;
+		unsigned long best_parent = req->rate;
 
 		if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
 			best_parent *= div;
-		*prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
+		req->best_parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
 	}
 
-	return *prate / div;
+	req->rate = req->best_parent_rate / div;
+
+	return 0;
 }
 
 static int ccu_gate_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -127,7 +129,7 @@ const struct clk_ops ccu_gate_ops = {
 	.disable	= ccu_gate_disable,
 	.enable		= ccu_gate_enable,
 	.is_enabled	= ccu_gate_is_enabled,
-	.round_rate	= ccu_gate_round_rate,
+	.determine_rate = ccu_gate_determine_rate,
 	.set_rate	= ccu_gate_set_rate,
 	.recalc_rate	= ccu_gate_recalc_rate,
 };

drivers/clk/sunxi-ng/ccu_nk.c

@@ -92,26 +92,26 @@ static unsigned long ccu_nk_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static int ccu_nk_determine_rate(struct clk_hw *hw,
+				 struct clk_rate_request *req)
 {
 	struct ccu_nk *nk = hw_to_ccu_nk(hw);
 	struct _ccu_nk _nk;
 
 	if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate *= nk->fixed_post_div;
+		req->rate *= nk->fixed_post_div;
 
 	_nk.min_n = nk->n.min ?: 1;
 	_nk.max_n = nk->n.max ?: 1 << nk->n.width;
 	_nk.min_k = nk->k.min ?: 1;
 	_nk.max_k = nk->k.max ?: 1 << nk->k.width;
 
-	rate = ccu_nk_find_best(*parent_rate, rate, &_nk);
+	req->rate = ccu_nk_find_best(req->best_parent_rate, req->rate, &_nk);
 
 	if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate = rate / nk->fixed_post_div;
+		req->rate = req->rate / nk->fixed_post_div;
 
-	return rate;
+	return 0;
 }
 
 static int ccu_nk_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -155,7 +155,7 @@ const struct clk_ops ccu_nk_ops = {
 	.is_enabled	= ccu_nk_is_enabled,
 
 	.recalc_rate	= ccu_nk_recalc_rate,
-	.round_rate	= ccu_nk_round_rate,
+	.determine_rate = ccu_nk_determine_rate,
 	.set_rate	= ccu_nk_set_rate,
 };
 EXPORT_SYMBOL_NS_GPL(ccu_nk_ops, "SUNXI_CCU");

drivers/clk/sunxi-ng/ccu_nkmp.c

@@ -127,20 +127,20 @@ static unsigned long ccu_nkmp_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static int ccu_nkmp_determine_rate(struct clk_hw *hw,
+				   struct clk_rate_request *req)
 {
 	struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
 	struct _ccu_nkmp _nkmp;
 
 	if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate *= nkmp->fixed_post_div;
+		req->rate *= nkmp->fixed_post_div;
 
-	if (nkmp->max_rate && rate > nkmp->max_rate) {
-		rate = nkmp->max_rate;
+	if (nkmp->max_rate && req->rate > nkmp->max_rate) {
+		req->rate = nkmp->max_rate;
 		if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
-			rate /= nkmp->fixed_post_div;
-		return rate;
+			req->rate /= nkmp->fixed_post_div;
+		return 0;
 	}
 
 	_nkmp.min_n = nkmp->n.min ?: 1;
@@ -152,12 +152,13 @@ static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
 	_nkmp.min_p = 1;
 	_nkmp.max_p = nkmp->p.max ?: 1 << ((1 << nkmp->p.width) - 1);
 
-	rate = ccu_nkmp_find_best(*parent_rate, rate, &_nkmp);
+	req->rate = ccu_nkmp_find_best(req->best_parent_rate, req->rate,
+				       &_nkmp);
 
 	if (nkmp->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate = rate / nkmp->fixed_post_div;
+		req->rate = req->rate / nkmp->fixed_post_div;
 
-	return rate;
+	return 0;
 }
 
 static int ccu_nkmp_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -227,7 +228,7 @@ const struct clk_ops ccu_nkmp_ops = {
 	.is_enabled	= ccu_nkmp_is_enabled,
 
 	.recalc_rate	= ccu_nkmp_recalc_rate,
-	.round_rate	= ccu_nkmp_round_rate,
+	.determine_rate = ccu_nkmp_determine_rate,
 	.set_rate	= ccu_nkmp_set_rate,
 };
 EXPORT_SYMBOL_NS_GPL(ccu_nkmp_ops, "SUNXI_CCU");

drivers/clk/sunxi-ng/ccu_nm.c

@@ -116,52 +116,53 @@ static unsigned long ccu_nm_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static int ccu_nm_determine_rate(struct clk_hw *hw,
+				 struct clk_rate_request *req)
 {
 	struct ccu_nm *nm = hw_to_ccu_nm(hw);
 	struct _ccu_nm _nm;
 
 	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate *= nm->fixed_post_div;
+		req->rate *= nm->fixed_post_div;
 
-	if (rate < nm->min_rate) {
-		rate = nm->min_rate;
+	if (req->rate < nm->min_rate) {
+		req->rate = nm->min_rate;
 		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-			rate /= nm->fixed_post_div;
-		return rate;
+			req->rate /= nm->fixed_post_div;
+		return 0;
 	}
 
-	if (nm->max_rate && rate > nm->max_rate) {
-		rate = nm->max_rate;
+	if (nm->max_rate && req->rate > nm->max_rate) {
+		req->rate = nm->max_rate;
 		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-			rate /= nm->fixed_post_div;
-		return rate;
+			req->rate /= nm->fixed_post_div;
+		return 0;
 	}
 
-	if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate)) {
+	if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, req->rate)) {
 		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-			rate /= nm->fixed_post_div;
-		return rate;
+			req->rate /= nm->fixed_post_div;
+		return 0;
 	}
 
-	if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, rate)) {
+	if (ccu_sdm_helper_has_rate(&nm->common, &nm->sdm, req->rate)) {
 		if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-			rate /= nm->fixed_post_div;
-		return rate;
+			req->rate /= nm->fixed_post_div;
+		return 0;
 	}
 
 	_nm.min_n = nm->n.min ?: 1;
 	_nm.max_n = nm->n.max ?: 1 << nm->n.width;
 	_nm.min_m = 1;
 	_nm.max_m = nm->m.max ?: 1 << nm->m.width;
 
-	rate = ccu_nm_find_best(&nm->common, *parent_rate, rate, &_nm);
+	req->rate = ccu_nm_find_best(&nm->common, req->best_parent_rate,
+				     req->rate, &_nm);
 
 	if (nm->common.features & CCU_FEATURE_FIXED_POSTDIV)
-		rate /= nm->fixed_post_div;
+		req->rate /= nm->fixed_post_div;
 
-	return rate;
+	return 0;
 }
 
 static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -233,7 +234,7 @@ const struct clk_ops ccu_nm_ops = {
 	.is_enabled	= ccu_nm_is_enabled,
 
 	.recalc_rate	= ccu_nm_recalc_rate,
-	.round_rate	= ccu_nm_round_rate,
+	.determine_rate = ccu_nm_determine_rate,
 	.set_rate	= ccu_nm_set_rate,
 };
 EXPORT_SYMBOL_NS_GPL(ccu_nm_ops, "SUNXI_CCU");

include/dt-bindings/reset/sun55i-a523-r-ccu.h

@@ -21,5 +21,6 @@
 #define RST_BUS_R_IR_RX		12
 #define RST_BUS_R_RTC		13
 #define RST_BUS_R_CPUCFG	14
+#define RST_BUS_R_PPU0		15
 
 #endif /* _DT_BINDINGS_RST_SUN55I_A523_R_CCU_H_ */