Merge branches 'clk-composite-determine-fix', 'clk-allwinner', 'clk-amlogic' and 'clk-samsung' into clk-next

* clk-composite-determine-fix:
  clk: composite: Use rate_ops.determine_rate when also a mux is available
  clk: composite: Also consider .determine_rate for rate + mux composites

* clk-allwinner:
  clk: sunxi: sun8i-apb0: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi: sun6i-ar100: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi: sun6i-apb0-gates: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi: sun6i-apb0: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun9i-a80-usb: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun9i-a80-de: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun9i-a80: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun8i-r40: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun8i-de2: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun8i-a83t: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun50i-h6: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi-ng: ccu-sun50i-a64: Make use of the helper function devm_platform_ioremap_resource()
  clk: sunxi: clk-mod0: Make use of the helper function devm_platform_ioremap_resource()
  dt-bindings: clocks: Fix typo in the H6 compatible
  clk: sunxi-ng: Use a separate lock for each CCU instance
  clk: sunxi-ng: Prevent unbinding CCUs via sysfs
  clk: sunxi-ng: Unregister clocks/resets when unbinding
  clk: sunxi-ng: Add machine dependency to A83T CCU
  clk: sunxi-ng: mux: Remove unused 'reg' field

* clk-amlogic:
  clk: meson: meson8b: Make the video clock trees mutable
  clk: meson: meson8b: Initialize the HDMI PLL registers
  clk: meson: meson8b: Add the HDMI PLL M/N parameters
  clk: meson: meson8b: Add the vid_pll_lvds_en gate clock
  clk: meson: meson8b: Use CLK_SET_RATE_NO_REPARENT for vclk{,2}_in_sel
  clk: meson: meson8b: Export the video clocks

* clk-samsung:
  clk: samsung: describe drivers in Kconfig
  clk: samsung: exynos5433: update apollo and atlas clock probing
  clk: samsung: add support for CPU clocks
  clk: samsung: Introduce Exynos850 clock driver
  dt-bindings: clock: Document Exynos850 CMU bindings
  dt-bindings: clock: Add bindings definitions for Exynos850 CMU
  clk: samsung: clk-pll: Implement pll0831x PLL type
  clk: samsung: clk-pll: Implement pll0822x PLL type
  clk: samsung: s5pv210-audss: Make use of devm_platform_ioremap_resource()
  clk: samsung: exynos5433: Make use of devm_platform_ioremap_resource()
  clk: samsung: exynos4412-isp: Make use of devm_platform_ioremap_resource()
  clk: samsung: exynos-audss: Make use of devm_platform_ioremap_resource()

Author: bebarino

Documentation/devicetree/bindings/clock/allwinner,sun8i-a83t-de2-clk.yaml

@@ -24,7 +24,7 @@ properties:
       - const: allwinner,sun8i-v3s-de2-clk
       - const: allwinner,sun50i-a64-de2-clk
       - const: allwinner,sun50i-h5-de2-clk
-      - const: allwinner,sun50i-h6-de2-clk
+      - const: allwinner,sun50i-h6-de3-clk
       - items:
           - const: allwinner,sun8i-r40-de2-clk
           - const: allwinner,sun8i-h3-de2-clk

Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml

@@ -0,0 +1,185 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/samsung,exynos850-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos850 SoC clock controller
+
+maintainers:
+  - Sam Protsenko <[email protected]>
+  - Chanwoo Choi <[email protected]>
+  - Krzysztof Kozlowski <[email protected]>
+  - Sylwester Nawrocki <[email protected]>
+  - Tomasz Figa <[email protected]>
+
+description: |
+  Exynos850 clock controller is comprised of several CMU units, generating
+  clocks for different domains. Those CMU units are modeled as separate device
+  tree nodes, and might depend on each other. Root clocks in that clock tree are
+  two external clocks:: OSCCLK (26 MHz) and RTCCLK (32768 Hz). Those external
+  clocks must be defined as fixed-rate clocks in dts.
+
+  CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and
+  dividers; all other leaf clocks (other CMUs) are usually derived from CMU_TOP.
+
+  Each clock is assigned an identifier and client nodes can use this identifier
+  to specify the clock which they consume. All clocks available for usage
+  in clock consumer nodes are defined as preprocessor macros in
+  'dt-bindings/clock/exynos850.h' header.
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos850-cmu-top
+      - samsung,exynos850-cmu-core
+      - samsung,exynos850-cmu-dpu
+      - samsung,exynos850-cmu-hsi
+      - samsung,exynos850-cmu-peri
+
+  clocks:
+    minItems: 1
+    maxItems: 5
+
+  clock-names:
+    minItems: 1
+    maxItems: 5
+
+  "#clock-cells":
+    const: 1
+
+  reg:
+    maxItems: 1
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-top
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+
+        clock-names:
+          items:
+            - const: oscclk
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-core
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: CMU_CORE bus clock (from CMU_TOP)
+            - description: CCI clock (from CMU_TOP)
+            - description: eMMC clock (from CMU_TOP)
+            - description: SSS clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: dout_core_bus
+            - const: dout_core_cci
+            - const: dout_core_mmc_embd
+            - const: dout_core_sss
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-dpu
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: DPU clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: dout_dpu
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-hsi
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: External RTC clock (32768 Hz)
+            - description: CMU_HSI bus clock (from CMU_TOP)
+            - description: SD card clock (from CMU_TOP)
+            - description: "USB 2.0 DRD clock (from CMU_TOP)"
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: rtcclk
+            - const: dout_hsi_bus
+            - const: dout_hsi_mmc_card
+            - const: dout_hsi_usb20drd
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos850-cmu-peri
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: CMU_PERI bus clock (from CMU_TOP)
+            - description: UART clock (from CMU_TOP)
+            - description: Parent clock for HSI2C and SPI (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: dout_peri_bus
+            - const: dout_peri_uart
+            - const: dout_peri_ip
+
+required:
+  - compatible
+  - "#clock-cells"
+  - clocks
+  - clock-names
+  - reg
+
+additionalProperties: false
+
+examples:
+  # Clock controller node for CMU_PERI
+  - |
+    #include <dt-bindings/clock/exynos850.h>
+
+    cmu_peri: clock-controller@10030000 {
+        compatible = "samsung,exynos850-cmu-peri";
+        reg = <0x10030000 0x8000>;
+        #clock-cells = <1>;
+
+        clocks = <&oscclk>, <&cmu_top CLK_DOUT_PERI_BUS>,
+                 <&cmu_top CLK_DOUT_PERI_UART>,
+                 <&cmu_top CLK_DOUT_PERI_IP>;
+        clock-names = "oscclk", "dout_peri_bus",
+                      "dout_peri_uart", "dout_peri_ip";
+    };
+
+...

drivers/clk/clk-composite.c

@@ -42,6 +42,29 @@ static unsigned long clk_composite_recalc_rate(struct clk_hw *hw,
 	return rate_ops->recalc_rate(rate_hw, parent_rate);
 }
 
+static int clk_composite_determine_rate_for_parent(struct clk_hw *rate_hw,
+						   struct clk_rate_request *req,
+						   struct clk_hw *parent_hw,
+						   const struct clk_ops *rate_ops)
+{
+	long rate;
+
+	req->best_parent_hw = parent_hw;
+	req->best_parent_rate = clk_hw_get_rate(parent_hw);
+
+	if (rate_ops->determine_rate)
+		return rate_ops->determine_rate(rate_hw, req);
+
+	rate = rate_ops->round_rate(rate_hw, req->rate,
+				    &req->best_parent_rate);
+	if (rate < 0)
+		return rate;
+
+	req->rate = rate;
+
+	return 0;
+}
+
 static int clk_composite_determine_rate(struct clk_hw *hw,
 					struct clk_rate_request *req)
 {
@@ -51,54 +74,56 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
 	struct clk_hw *rate_hw = composite->rate_hw;
 	struct clk_hw *mux_hw = composite->mux_hw;
 	struct clk_hw *parent;
-	unsigned long parent_rate;
-	long tmp_rate, best_rate = 0;
 	unsigned long rate_diff;
 	unsigned long best_rate_diff = ULONG_MAX;
-	long rate;
-	int i;
+	unsigned long best_rate = 0;
+	int i, ret;
 
-	if (rate_hw && rate_ops && rate_ops->determine_rate) {
-		__clk_hw_set_clk(rate_hw, hw);
-		return rate_ops->determine_rate(rate_hw, req);
-	} else if (rate_hw && rate_ops && rate_ops->round_rate &&
-		   mux_hw && mux_ops && mux_ops->set_parent) {
+	if (rate_hw && rate_ops &&
+	    (rate_ops->determine_rate || rate_ops->round_rate) &&
+	    mux_hw && mux_ops && mux_ops->set_parent) {
 		req->best_parent_hw = NULL;
 
 		if (clk_hw_get_flags(hw) & CLK_SET_RATE_NO_REPARENT) {
+			struct clk_rate_request tmp_req = *req;
+
 			parent = clk_hw_get_parent(mux_hw);
-			req->best_parent_hw = parent;
-			req->best_parent_rate = clk_hw_get_rate(parent);
 
-			rate = rate_ops->round_rate(rate_hw, req->rate,
-						    &req->best_parent_rate);
-			if (rate < 0)
-				return rate;
+			ret = clk_composite_determine_rate_for_parent(rate_hw,
+								      &tmp_req,
+								      parent,
+								      rate_ops);
+			if (ret)
+				return ret;
+
+			req->rate = tmp_req.rate;
+			req->best_parent_rate = tmp_req.best_parent_rate;
 
-			req->rate = rate;
 			return 0;
 		}
 
 		for (i = 0; i < clk_hw_get_num_parents(mux_hw); i++) {
+			struct clk_rate_request tmp_req = *req;
+
 			parent = clk_hw_get_parent_by_index(mux_hw, i);
 			if (!parent)
 				continue;
 
-			parent_rate = clk_hw_get_rate(parent);
-
-			tmp_rate = rate_ops->round_rate(rate_hw, req->rate,
-							&parent_rate);
-			if (tmp_rate < 0)
+			ret = clk_composite_determine_rate_for_parent(rate_hw,
+								      &tmp_req,
+								      parent,
+								      rate_ops);
+			if (ret)
 				continue;
 
-			rate_diff = abs(req->rate - tmp_rate);
+			rate_diff = abs(req->rate - tmp_req.rate);
 
 			if (!rate_diff || !req->best_parent_hw
 				       || best_rate_diff > rate_diff) {
 				req->best_parent_hw = parent;
-				req->best_parent_rate = parent_rate;
+				req->best_parent_rate = tmp_req.best_parent_rate;
 				best_rate_diff = rate_diff;
-				best_rate = tmp_rate;
+				best_rate = tmp_req.rate;
 			}
 
 			if (!rate_diff)
@@ -107,6 +132,9 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
 
 		req->rate = best_rate;
 		return 0;
+	} else if (rate_hw && rate_ops && rate_ops->determine_rate) {
+		__clk_hw_set_clk(rate_hw, hw);
+		return rate_ops->determine_rate(rate_hw, req);
 	} else if (mux_hw && mux_ops && mux_ops->determine_rate) {
 		__clk_hw_set_clk(mux_hw, hw);
 		return mux_ops->determine_rate(mux_hw, req);