build/patch/kernel/archive/sunxi-6.5/patches.armbian/arm64-dts-allwinner-h616-Add-efuse_xlate-cpu-frequency-scaling-v1_6_2.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: AGM1968 <AGM1968@users.noreply.github.com>
Date: Tue, 23 May 2023 16:43:00 +0000
Subject: arm64-dts-allwinner-h616-Add-efuse_xlate-cpu-frequency-scaling-v1_6_2
 arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi
 arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
 drivers/cpufreq/cpufreq-dt-platdev.c drivers/cpufreq/sun50i-cpufreq-nvmem.c

Signed-off-by: AGM1968 <AGM1968@users.noreply.github.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi       | 75 ++++++++
 arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts |  6 +
 drivers/cpufreq/cpufreq-dt-platdev.c                         |  1 +
 drivers/cpufreq/sun50i-cpufreq-nvmem.c                       | 91 +++++++---
 4 files changed, 149 insertions(+), 24 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi
new file mode 100644
index 000000000000..36f2950367c6
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-cpu-opp.dtsi
@@ -0,0 +1,75 @@
+//SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+//Testing Version 1  from: AGM1968 <AGM1968@users.noreply.github.com>
+//Noted: PLL_CPUX = 24 MHz*N/P (WIP)
+
+/ {
+	cpu_opp_table: opp-table-cpu {
+		compatible = "allwinner,sun50i-h616-operating-points";
+		nvmem-cells = <&cpu_speed_grade>;
+		opp-shared;
+ 
+		opp-480000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <480000000>;
+			opp-microvolt-speed0 = <820000 820000 1100000>; 
+			opp-microvolt-speed1 = <880000 880000 1100000>;
+			opp-microvolt-speed2 = <880000 880000 1100000>;
+		};
+	
+		opp-600000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <600000000>;
+			opp-microvolt-speed0 = <820000 820000 1100000>;
+			opp-microvolt-speed1 = <880000 880000 1100000>;
+			opp-microvolt-speed2 = <880000 880000 1100000>;
+		};
+
+		opp-792000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <792000000>;
+		        opp-microvolt-speed0 = <860000 860000 1100000>;
+			opp-microvolt-speed1 = <940000 940000 1100000>;
+			opp-microvolt-speed2 = <940000 940000 1100000>;
+		};
+
+		opp-1008000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1008000000>;
+			opp-microvolt-speed0 = <900000 900000 1100000>;
+			opp-microvolt-speed1 = <1020000 1020000 1100000>;
+			opp-microvolt-speed2 = <1020000 1020000 1100000>;
+		};
+
+		opp-1200000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt-speed0 = <960000 960000 1100000>;
+			opp-microvolt-speed1 = <1100000 1100000 1100000>;
+			opp-microvolt-speed2 = <1100000 1100000 1100000>;
+		};
+
+		opp-1512000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1512000000>;
+			opp-microvolt-speed0 = <1100000 1100000 1100000>;
+			opp-microvolt-speed1 = <1100000 1100000 1100000>;
+			opp-microvolt-speed2 = <1100000 1100000 1100000>;
+		};
+	};
+};
+
+&cpu0 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+ 
+&cpu1 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+ 
+&cpu2 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+ 
+&cpu3 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
index 0a24b8571a50..defb8b71f872 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
@@ -4,10 +4,11 @@
  */
 
 /dts-v1/;
 
 #include "sun50i-h616.dtsi"
+#include "sun50i-h616-cpu-opp.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/leds/common.h>
 
@@ -216,10 +217,15 @@ &pio {
 	vcc-pg-supply = <&reg_bldo1>;
 	vcc-ph-supply = <&reg_aldo1>;
 	vcc-pi-supply = <&reg_aldo1>;
 };
 
+&cpu0  {
+	cpu-supply = <&reg_dcdca>;
+	status = "okay";
+};
+
 &spi0  {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
 
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index e85703651098..e4fa483c8a84 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -100,10 +100,11 @@ static const struct of_device_id allowlist[] __initconst = {
  * Machines for which the cpufreq device is *not* created, mostly used for
  * platforms using "operating-points-v2" property.
  */
 static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "allwinner,sun50i-h6", },
+	{ .compatible = "allwinner,sun50i-h616", },
 
 	{ .compatible = "apple,arm-platform", },
 
 	{ .compatible = "arm,vexpress", },
 
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index 1acec58c33c3..f8d5c30e56d0 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -4,10 +4,13 @@
  *
  * The sun50i-cpufreq-nvmem driver reads the efuse value from the SoC to
  * provide the OPP framework with required information.
  *
  * Copyright (C) 2019 Yangtao Li <tiny.windzz@gmail.com>
+ *
+ * ADD efuse_xlate to extract SoC version so that h6 and h616 can coexist.
+ * Version 1 AGM1968 <AGM1968@users.noreply.github.com>
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/module.h>
@@ -17,41 +20,77 @@
 #include <linux/pm_opp.h>
 #include <linux/slab.h>
 
 #define MAX_NAME_LEN	7
 
-#define NVMEM_MASK	0x7
-#define NVMEM_SHIFT	5
+#define SUN50I_H616_NVMEM_MASK 0x22
+#define SUN50I_H616_NVMEM_SHIFT 5
+#define SUN50I_H6_NVMEM_MASK 0x7
+#define SUN50I_H6_NVMEM_SHIFT 5
+
+struct sunxi_cpufreq_soc_data {
+	u32 (*efuse_xlate) (void *efuse);
+};
 
 static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
 
+static u32 sun50i_h616_efuse_xlate(void *efuse)
+{
+   u32 efuse_value = (*(u32 *)efuse >> SUN50I_H616_NVMEM_SHIFT) &
+             SUN50I_H616_NVMEM_MASK;
+
+   /* Tested as V1 h616 soc. Expected efuse values are 1 - 3,
+      slowest to fastest */
+   if (efuse_value >=1 && efuse_value <= 3)
+       return efuse_value - 1;
+   else
+       return 0;
+};
+
+static u32 sun50i_h6_efuse_xlate(void *efuse)
+{
+   u32 efuse_value = (*(u32 *)efuse >> SUN50I_H6_NVMEM_SHIFT) &
+             SUN50I_H6_NVMEM_MASK;
+
+   /*
+    * We treat unexpected efuse values as if the SoC was from
+    * the slowest bin. Expected efuse values are 1 - 3, slowest
+    * to fastest.
+   */
+   if (efuse_value >= 1 && efuse_value <= 3)
+       return efuse_value - 1;
+   else
+       return 0;
+};
+
+
 /**
  * sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value
+ * @soc_data: pointer to sunxi_cpufreq_soc_data context
  * @versions: Set to the value parsed from efuse
  *
  * Returns 0 if success.
  */
-static int sun50i_cpufreq_get_efuse(u32 *versions)
+static int sun50i_cpufreq_get_efuse(const struct sunxi_cpufreq_soc_data *soc_data,
+		u32 *versions)
 {
 	struct nvmem_cell *speedbin_nvmem;
 	struct device_node *np;
 	struct device *cpu_dev;
-	u32 *speedbin, efuse_value;
+	u32 *speedbin;
 	size_t len;
-	int ret;
 
 	cpu_dev = get_cpu_device(0);
 	if (!cpu_dev)
 		return -ENODEV;
 
 	np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
 	if (!np)
 		return -ENOENT;
-
-	ret = of_device_is_compatible(np,
-				      "allwinner,sun50i-h6-operating-points");
-	if (!ret) {
+	if (of_device_is_compatible(np, "allwinner,sun50i-h6-operating-points")) {}
+	else if (of_device_is_compatible(np, "allwinner,sun50i-h616-operating-points")) {}
+	else {
 		of_node_put(np);
 		return -ENOENT;
 	}
 
 	speedbin_nvmem = of_nvmem_cell_get(np, NULL);
@@ -63,40 +102,35 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
 	speedbin = nvmem_cell_read(speedbin_nvmem, &len);
 	nvmem_cell_put(speedbin_nvmem);
 	if (IS_ERR(speedbin))
 		return PTR_ERR(speedbin);
 
-	efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
-
-	/*
-	 * We treat unexpected efuse values as if the SoC was from
-	 * the slowest bin. Expected efuse values are 1-3, slowest
-	 * to fastest.
-	 */
-	if (efuse_value >= 1 && efuse_value <= 3)
-		*versions = efuse_value - 1;
-	else
-		*versions = 0;
+	*versions = soc_data->efuse_xlate(speedbin);
 
 	kfree(speedbin);
 	return 0;
 };
 
 static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
 {
+	const struct of_device_id *match;
 	int *opp_tokens;
 	char name[MAX_NAME_LEN];
 	unsigned int cpu;
 	u32 speed = 0;
 	int ret;
 
+	match = dev_get_platdata(&pdev->dev);
+	if (!match)
+		return -EINVAL;
+
 	opp_tokens = kcalloc(num_possible_cpus(), sizeof(*opp_tokens),
 			     GFP_KERNEL);
 	if (!opp_tokens)
 		return -ENOMEM;
 
-	ret = sun50i_cpufreq_get_efuse(&speed);
+	ret = sun50i_cpufreq_get_efuse(match-> data, &speed);
 	if (ret) {
 		kfree(opp_tokens);
 		return ret;
 	}
 
@@ -158,12 +192,21 @@ static struct platform_driver sun50i_cpufreq_driver = {
 	.driver = {
 		.name = "sun50i-cpufreq-nvmem",
 	},
 };
 
+static const struct sunxi_cpufreq_soc_data sun50i_h616_data = {
+    .efuse_xlate = sun50i_h616_efuse_xlate,
+};
+
+static const struct sunxi_cpufreq_soc_data sun50i_h6_data = {
+    .efuse_xlate = sun50i_h6_efuse_xlate,
+};
+
 static const struct of_device_id sun50i_cpufreq_match_list[] = {
-	{ .compatible = "allwinner,sun50i-h6" },
+	{ .compatible = "allwinner,sun50i-h6", .data = &sun50i_h6_data },
+        { .compatible = "allwinner,sun50i-h616", .data = &sun50i_h616_data },
 	{}
 };
 MODULE_DEVICE_TABLE(of, sun50i_cpufreq_match_list);
 
 static const struct of_device_id *sun50i_cpufreq_match_node(void)
@@ -195,12 +238,12 @@ static int __init sun50i_cpufreq_init(void)
 	ret = platform_driver_register(&sun50i_cpufreq_driver);
 	if (unlikely(ret < 0))
 		return ret;
 
 	sun50i_cpufreq_pdev =
-		platform_device_register_simple("sun50i-cpufreq-nvmem",
-						-1, NULL, 0);
+		platform_device_register_data(NULL,
+		"sun50i-cpufreq-nvmem", -1, match, sizeof(*match));
 	ret = PTR_ERR_OR_ZERO(sun50i_cpufreq_pdev);
 	if (ret == 0)
 		return 0;
 
 	platform_driver_unregister(&sun50i_cpufreq_driver);
-- 
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