Merge back earlier cpufreq material for 6.18

Author: rafaeljw

Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt

@@ -22,6 +22,7 @@ properties:
         items:
           - enum:
               - qcom,qcm2290-cpufreq-hw
+              - qcom,qcs615-cpufreq-hw
               - qcom,sc7180-cpufreq-hw
               - qcom,sc8180x-cpufreq-hw
               - qcom,sdm670-cpufreq-hw
@@ -132,6 +133,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,qcs615-cpufreq-hw
               - qcom,qdu1000-cpufreq-epss
               - qcom,sa8255p-cpufreq-epss
               - qcom,sa8775p-cpufreq-epss

Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml

@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cpufreq/mediatek,mt8196-cpufreq-hw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Hybrid CPUFreq for MT8196/MT6991 series SoCs
+
+maintainers:
+  - Nicolas Frattaroli <[email protected]>
+
+description:
+  MT8196 uses CPUFreq management hardware that supports dynamic voltage
+  frequency scaling (dvfs), and can support several performance domains.
+
+properties:
+  compatible:
+    const: mediatek,mt8196-cpufreq-hw
+
+  reg:
+    items:
+      - description: FDVFS control register region
+      - description: OPP tables and control for performance domain 0
+      - description: OPP tables and control for performance domain 1
+      - description: OPP tables and control for performance domain 2
+
+  "#performance-domain-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#performance-domain-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    cpus {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            cpu0: cpu@0 {
+                device_type = "cpu";
+                compatible = "arm,cortex-a720";
+                enable-method = "psci";
+                performance-domains = <&performance 0>;
+                reg = <0x000>;
+            };
+
+            /* ... */
+
+            cpu6: cpu@600 {
+                device_type = "cpu";
+                compatible = "arm,cortex-x4";
+                enable-method = "psci";
+                performance-domains = <&performance 1>;
+                reg = <0x600>;
+            };
+
+            cpu7: cpu@700 {
+                device_type = "cpu";
+                compatible = "arm,cortex-x925";
+                enable-method = "psci";
+                performance-domains = <&performance 2>;
+                reg = <0x700>;
+            };
+    };
+
+    /* ... */
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        performance: performance-controller@c2c2034 {
+            compatible = "mediatek,mt8196-cpufreq-hw";
+            reg = <0 0xc220400 0 0x20>, <0 0xc2c0f20 0 0x120>,
+                  <0 0xc2c1040 0 0x120>, <0 0xc2c1160 0 0x120>;
+            #performance-domain-cells = <1>;
+        };
+    };

Documentation/devicetree/bindings/cpufreq/mediatek,mt8196-cpufreq-hw.yaml

@@ -6349,6 +6349,12 @@ F:	kernel/sched/cpufreq*.c
 F:	rust/kernel/cpufreq.rs
 F:	tools/testing/selftests/cpufreq/
 
+CPU FREQUENCY DRIVERS - VIRTUAL MACHINE CPUFREQ
+M:	Saravana Kannan <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	drivers/cpufreq/virtual-cpufreq.c
+
 CPU HOTPLUG
 M:	Thomas Gleixner <[email protected]>
 M:	Peter Zijlstra <[email protected]>

MAINTAINERS

@@ -135,7 +135,7 @@
 
 		opp-1000000000 {
 			opp-hz = /bits/ 64 <1000000000>;
-			opp-supported-hw = <0x01 0x0006>;
+			opp-supported-hw = <0x01 0x0007>;
 			clock-latency-ns = <6000000>;
 		};
 

arch/arm64/boot/dts/ti/k3-am62p5.dtsi

@@ -318,7 +318,6 @@ static u32 drv_read(struct acpi_cpufreq_data *data, const struct cpumask *mask)
 	return cmd.val;
 }
 
-/* Called via smp_call_function_many(), on the target CPUs */
 static void do_drv_write(void *_cmd)
 {
 	struct drv_cmd *cmd = _cmd;
@@ -335,14 +334,8 @@ static void drv_write(struct acpi_cpufreq_data *data,
 		.val = val,
 		.func.write = data->cpu_freq_write,
 	};
-	int this_cpu;
 
-	this_cpu = get_cpu();
-	if (cpumask_test_cpu(this_cpu, mask))
-		do_drv_write(&cmd);
-
-	smp_call_function_many(mask, do_drv_write, &cmd, 1);
-	put_cpu();
+	on_each_cpu_mask(mask, do_drv_write, &cmd, true);
 }
 
 static u32 get_cur_val(const struct cpumask *mask, struct acpi_cpufreq_data *data)

drivers/cpufreq/acpi-cpufreq.c

@@ -107,6 +107,7 @@ static struct platform_driver airoha_cpufreq_driver = {
 };
 
 static const struct of_device_id airoha_cpufreq_match_list[] __initconst = {
+	{ .compatible = "airoha,an7583" },
 	{ .compatible = "airoha,en7581" },
 	{},
 };

drivers/cpufreq/airoha-cpufreq.c

@@ -265,15 +265,15 @@ static void __init armada37xx_cpufreq_avs_configure(struct regmap *base,
 	 */
 
 	target_vm = avs_map[l0_vdd_min] - 100;
-	target_vm = target_vm > MIN_VOLT_MV ? target_vm : MIN_VOLT_MV;
+	target_vm = max(target_vm, MIN_VOLT_MV);
 	dvfs->avs[1] = armada_37xx_avs_val_match(target_vm);
 
 	/*
 	 * L2 & L3 voltage is equal to L0 voltage - 150mv and it must
 	 * be larger than 1000mv
 	 */
 	target_vm = avs_map[l0_vdd_min] - 150;
-	target_vm = target_vm > MIN_VOLT_MV ? target_vm : MIN_VOLT_MV;
+	target_vm = max(target_vm, MIN_VOLT_MV);
 	dvfs->avs[2] = dvfs->avs[3] = armada_37xx_avs_val_match(target_vm);
 
 	/*

drivers/cpufreq/armada-37xx-cpufreq.c

@@ -480,16 +480,14 @@ static bool brcm_avs_is_firmware_loaded(struct private_data *priv)
 
 static unsigned int brcm_avs_cpufreq_get(unsigned int cpu)
 {
-	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpu);
 	struct private_data *priv;
 
 	if (!policy)
 		return 0;
 
 	priv = policy->driver_data;
 
-	cpufreq_cpu_put(policy);
-
 	return brcm_avs_get_frequency(priv->base);
 }
 

drivers/cpufreq/brcmstb-avs-cpufreq.c

@@ -50,8 +50,7 @@ struct cppc_freq_invariance {
 static DEFINE_PER_CPU(struct cppc_freq_invariance, cppc_freq_inv);
 static struct kthread_worker *kworker_fie;
 
-static int cppc_perf_from_fbctrs(struct cppc_cpudata *cpu_data,
-				 struct cppc_perf_fb_ctrs *fb_ctrs_t0,
+static int cppc_perf_from_fbctrs(struct cppc_perf_fb_ctrs *fb_ctrs_t0,
 				 struct cppc_perf_fb_ctrs *fb_ctrs_t1);
 
 /**
@@ -87,8 +86,7 @@ static void cppc_scale_freq_workfn(struct kthread_work *work)
 		return;
 	}
 
-	perf = cppc_perf_from_fbctrs(cpu_data, &cppc_fi->prev_perf_fb_ctrs,
-				     &fb_ctrs);
+	perf = cppc_perf_from_fbctrs(&cppc_fi->prev_perf_fb_ctrs, &fb_ctrs);
 	if (!perf)
 		return;
 
@@ -684,8 +682,7 @@ static inline u64 get_delta(u64 t1, u64 t0)
 	return (u32)t1 - (u32)t0;
 }
 
-static int cppc_perf_from_fbctrs(struct cppc_cpudata *cpu_data,
-				 struct cppc_perf_fb_ctrs *fb_ctrs_t0,
+static int cppc_perf_from_fbctrs(struct cppc_perf_fb_ctrs *fb_ctrs_t0,
 				 struct cppc_perf_fb_ctrs *fb_ctrs_t1)
 {
 	u64 delta_reference, delta_delivered;
@@ -725,8 +722,8 @@ static int cppc_get_perf_ctrs_sample(int cpu,
 
 static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
 {
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpu);
 	struct cppc_perf_fb_ctrs fb_ctrs_t0 = {0}, fb_ctrs_t1 = {0};
-	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
 	struct cppc_cpudata *cpu_data;
 	u64 delivered_perf;
 	int ret;
@@ -736,8 +733,6 @@ static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
 
 	cpu_data = policy->driver_data;
 
-	cpufreq_cpu_put(policy);
-
 	ret = cppc_get_perf_ctrs_sample(cpu, &fb_ctrs_t0, &fb_ctrs_t1);
 	if (ret) {
 		if (ret == -EFAULT)
@@ -747,8 +742,7 @@ static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
 			return 0;
 	}
 
-	delivered_perf = cppc_perf_from_fbctrs(cpu_data, &fb_ctrs_t0,
-					       &fb_ctrs_t1);
+	delivered_perf = cppc_perf_from_fbctrs(&fb_ctrs_t0, &fb_ctrs_t1);
 	if (!delivered_perf)
 		goto out_invalid_counters;