ARM cpufreq updates for 6.12

- Several OF related cleanups in cpufreq drivers (Rob Herring). - Enable COMPILE_TEST for ARM drivers (Rob Herrring). - Introduce quirks for syscon failures and use socinfo to get revision for TI cpufreq driver (Dhruva Gole and Nishanth Menon). - Minor cleanups in amd-pstate driver (Anastasia Belova and Dhananjay Ugwekar). - Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers (Danila Tikhonov, Huacai Chen, and Liu Jing). -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEx73Crsp7f6M6scA70rkcPK6BEhwFAmbalyoACgkQ0rkcPK6B Ehw9IBAAus+BOdYMzU8VT7j8Y98oOfb5FsJCoTU2KaV2RIIpX4k+6daruCOm0BXP RtRiI+ILV5zLUm8CIC15f2GQE6PtDBFmjky7ItEemcbQPlTkpkZFWNFhBqE1u3hw jllA4p1LmUwAnr1zkwl2CEUJSRJBxWPeTxPL0Ci6pycFhiNPZwGqOreJQRsIMOh3 pgohKSBebxpzgwES8fhR32CqaHphrEFCryHafZIqzsXSBuyETGEKg57zTmdo6ojy GDuaIz6kQ9lKvW/q9iwTih93SsBnzDD85AAERDZkUDxey5IBLztrJLH5QT/XN77K EQOHeygwyKk4su00fXy/LXmMqKHCN/mAHgb6JvWBIm2xbDWx6drBJyV/NdX4YI4w 4m1SqmFH9Cv41UIcynQR83XthGKgIddjEDKPW0GNMQ+LHWlUS6Qm4Kb2q4rXruqD bUWs3NmZEvYD9P2XOKGHgfSPZ0iNXi0Lt5BBIWbeIPNwaikxHisNsNG1W2pMsfke n19cvt20aBJgx2s5acIH7Po8qQglrGGK9EKWRg8gInvtB7QRbHBhXVD6ZNwuIk/7 u2+Y42R4R1GzwsD3EUl+RnnUFgRwhg53OIzcE+AaaMDqGeTdxmG42eg0jGSBA7yx KbljH9PAfsMjjEjsVYReiIYxS28PZNyTBaxZJxD2RyxMz53CV9w= =BlNP -----END PGP SIGNATURE----- Merge tag 'cpufreq-arm-updates-6.12' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/vireshk/pm Merge ARM cpufreq updates for 6.12 from Viresh Kumar: "- Several OF related cleanups in cpufreq drivers (Rob Herring). - Enable COMPILE_TEST for ARM drivers (Rob Herrring). - Introduce quirks for syscon failures and use socinfo to get revision for TI cpufreq driver (Dhruva Gole and Nishanth Menon). - Minor cleanups in amd-pstate driver (Anastasia Belova and Dhananjay Ugwekar). - Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers (Danila Tikhonov, Huacai Chen, and Liu Jing)." * tag 'cpufreq-arm-updates-6.12' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: cpufreq: ti-cpufreq: Use socinfo to get revision in AM62 family cpufreq: Fix the cacography in powernv-cpufreq.c cpufreq: ti-cpufreq: Introduce quirks to handle syscon fails appropriately cpufreq: loongson3: Use raw_smp_processor_id() in do_service_request() cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value cpufreq: Add SM7325 to cpufreq-dt-platdev blocklist cpufreq: Fix warning on unused of_device_id tables for !CONFIG_OF cpufreq/amd-pstate: Add the missing cpufreq_cpu_put() cpufreq: Drop CONFIG_ARM and CONFIG_ARM64 dependency on Arm drivers cpufreq: Enable COMPILE_TEST on Arm drivers cpufreq: armada-8k: Avoid excessive stack usage cpufreq: omap: Drop asm includes cpufreq: qcom: Add explicit io.h include for readl/writel_relaxed cpufreq: spear: Use of_property_for_each_u32() instead of open coding cpufreq: Use of_property_present()
2024-11-26 21:54:11 +08:00 · 2024-09-06 20:50:46 +02:00 · 2024-09-06 20:50:46 +02:00 · 6af3aab6c7
commit 6af3aab6c7
parent 222caf5520 6b612d1bac
18 changed files with 95 additions and 59 deletions
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@ -231,9 +231,7 @@ if X86
 source "drivers/cpufreq/Kconfig.x86"
 endif

-if ARM || ARM64
 source "drivers/cpufreq/Kconfig.arm"
-endif

 if PPC32 || PPC64
 source "drivers/cpufreq/Kconfig.powerpc"
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@ -5,7 +5,7 @@

 config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
 	tristate "Allwinner nvmem based SUN50I CPUFreq driver"
-	depends on ARCH_SUNXI
+	depends on ARCH_SUNXI || COMPILE_TEST
 	depends on NVMEM_SUNXI_SID
 	select PM_OPP
 	help
@ -26,15 +26,17 @@ config ARM_APPLE_SOC_CPUFREQ

 config ARM_ARMADA_37XX_CPUFREQ
 	tristate "Armada 37xx CPUFreq support"
-	depends on ARCH_MVEBU && CPUFREQ_DT
+	depends on ARCH_MVEBU || COMPILE_TEST
+	depends on CPUFREQ_DT
 	help
 	  This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
 	  The Armada 37xx PMU supports 4 frequency and VDD levels.

 config ARM_ARMADA_8K_CPUFREQ
 	tristate "Armada 8K CPUFreq driver"
-	depends on ARCH_MVEBU && CPUFREQ_DT
-	select ARMADA_AP_CPU_CLK
+	depends on ARCH_MVEBU || COMPILE_TEST
+	depends on CPUFREQ_DT
+	select ARMADA_AP_CPU_CLK if COMMON_CLK
 	help
 	  This enables the CPUFreq driver support for Marvell
 	  Armada8k SOCs.
@ -56,7 +58,7 @@ config ARM_SCPI_CPUFREQ
 config ARM_VEXPRESS_SPC_CPUFREQ
 	tristate "Versatile Express SPC based CPUfreq driver"
 	depends on ARM_CPU_TOPOLOGY && HAVE_CLK
-	depends on ARCH_VEXPRESS_SPC
+	depends on ARCH_VEXPRESS_SPC || COMPILE_TEST
 	select PM_OPP
 	help
 	  This add the CPUfreq driver support for Versatile Express
@ -75,7 +77,8 @@ config ARM_BRCMSTB_AVS_CPUFREQ

 config ARM_HIGHBANK_CPUFREQ
 	tristate "Calxeda Highbank-based"
-	depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
+	depends on ARCH_HIGHBANK || COMPILE_TEST
+	depends on CPUFREQ_DT && REGULATOR && PL320_MBOX
 	default m
 	help
 	  This adds the CPUFreq driver for Calxeda Highbank SoC
@ -96,7 +99,8 @@ config ARM_IMX6Q_CPUFREQ

 config ARM_IMX_CPUFREQ_DT
 	tristate "Freescale i.MX8M cpufreq support"
-	depends on ARCH_MXC && CPUFREQ_DT
+	depends on CPUFREQ_DT
+	depends on ARCH_MXC || COMPILE_TEST
 	help
 	  This adds cpufreq driver support for Freescale i.MX7/i.MX8M
 	  series SoCs, based on cpufreq-dt.
@ -111,7 +115,8 @@ config ARM_KIRKWOOD_CPUFREQ

 config ARM_MEDIATEK_CPUFREQ
 	tristate "CPU Frequency scaling support for MediaTek SoCs"
-	depends on ARCH_MEDIATEK && REGULATOR
+	depends on ARCH_MEDIATEK || COMPILE_TEST
+	depends on REGULATOR
 	select PM_OPP
 	help
 	  This adds the CPUFreq driver support for MediaTek SoCs.
@ -130,12 +135,12 @@ config ARM_MEDIATEK_CPUFREQ_HW

 config ARM_OMAP2PLUS_CPUFREQ
 	bool "TI OMAP2+"
-	depends on ARCH_OMAP2PLUS
+	depends on ARCH_OMAP2PLUS || COMPILE_TEST
 	default ARCH_OMAP2PLUS

 config ARM_QCOM_CPUFREQ_NVMEM
 	tristate "Qualcomm nvmem based CPUFreq"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || COMPILE_TEST
 	depends on NVMEM_QCOM_QFPROM
 	depends on QCOM_SMEM
 	select PM_OPP
@ -166,7 +171,7 @@ config ARM_RASPBERRYPI_CPUFREQ

 config ARM_S3C64XX_CPUFREQ
 	bool "Samsung S3C64XX"
-	depends on CPU_S3C6410
+	depends on CPU_S3C6410 || COMPILE_TEST
 	default y
 	help
 	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
@ -175,7 +180,7 @@ config ARM_S3C64XX_CPUFREQ

 config ARM_S5PV210_CPUFREQ
 	bool "Samsung S5PV210 and S5PC110"
-	depends on CPU_S5PV210
+	depends on CPU_S5PV210 || COMPILE_TEST
 	default y
 	help
 	  This adds the CPUFreq driver for Samsung S5PV210 and
@ -199,14 +204,15 @@ config ARM_SCMI_CPUFREQ

 config ARM_SPEAR_CPUFREQ
 	bool "SPEAr CPUFreq support"
-	depends on PLAT_SPEAR
+	depends on PLAT_SPEAR || COMPILE_TEST
 	default y
 	help
 	  This adds the CPUFreq driver support for SPEAr SOCs.

 config ARM_STI_CPUFREQ
 	tristate "STi CPUFreq support"
-	depends on CPUFREQ_DT && SOC_STIH407
+	depends on CPUFREQ_DT
+	depends on SOC_STIH407 || COMPILE_TEST
 	help
 	  This driver uses the generic OPP framework to match the running
 	  platform with a predefined set of suitable values.  If not provided
@ -216,34 +222,38 @@ config ARM_STI_CPUFREQ

 config ARM_TEGRA20_CPUFREQ
 	tristate "Tegra20/30 CPUFreq support"
-	depends on ARCH_TEGRA && CPUFREQ_DT
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on CPUFREQ_DT
 	default y
 	help
 	  This adds the CPUFreq driver support for Tegra20/30 SOCs.

 config ARM_TEGRA124_CPUFREQ
 	bool "Tegra124 CPUFreq support"
-	depends on ARCH_TEGRA && CPUFREQ_DT
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on CPUFREQ_DT
 	default y
 	help
 	  This adds the CPUFreq driver support for Tegra124 SOCs.

 config ARM_TEGRA186_CPUFREQ
 	tristate "Tegra186 CPUFreq support"
-	depends on ARCH_TEGRA && TEGRA_BPMP
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on TEGRA_BPMP
 	help
 	  This adds the CPUFreq driver support for Tegra186 SOCs.

 config ARM_TEGRA194_CPUFREQ
 	tristate "Tegra194 CPUFreq support"
-	depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
+	depends on ARCH_TEGRA_194_SOC || (64BIT && COMPILE_TEST)
+	depends on TEGRA_BPMP
 	default y
 	help
 	  This adds CPU frequency driver support for Tegra194 SOCs.

 config ARM_TI_CPUFREQ
 	bool "Texas Instruments CPUFreq support"
-	depends on ARCH_OMAP2PLUS || ARCH_K3
+	depends on ARCH_OMAP2PLUS || ARCH_K3 || COMPILE_TEST
 	default y
 	help
 	  This driver enables valid OPPs on the running platform based on
@ -255,7 +265,7 @@ config ARM_TI_CPUFREQ

 config ARM_PXA2xx_CPUFREQ
 	tristate "Intel PXA2xx CPUfreq driver"
-	depends on PXA27x || PXA25x
+	depends on PXA27x || PXA25x || COMPILE_TEST
 	help
 	  This add the CPUFreq driver support for Intel PXA2xx SOCs.

--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@ -554,12 +554,15 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
 	}

 	if (value == prev)
-		return;
+		goto cpufreq_policy_put;

 	WRITE_ONCE(cpudata->cppc_req_cached, value);

 	amd_pstate_update_perf(cpudata, min_perf, des_perf,
 			       max_perf, fast_switch);
+
+cpufreq_policy_put:
+	cpufreq_cpu_put(policy);
 }

 static int amd_pstate_verify(struct cpufreq_policy_data *policy)
@ -656,7 +659,12 @@ static void amd_pstate_adjust_perf(unsigned int cpu,
 	unsigned long max_perf, min_perf, des_perf,
 		      cap_perf, lowest_nonlinear_perf;
 	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
-	struct amd_cpudata *cpudata = policy->driver_data;
+	struct amd_cpudata *cpudata;
+
+	if (!policy)
+		return;
+
+	cpudata = policy->driver_data;

 	if (policy->min != cpudata->min_limit_freq || policy->max != cpudata->max_limit_freq)
 		amd_pstate_update_min_max_limit(policy);
@ -870,11 +878,16 @@ static void amd_pstate_init_prefcore(struct amd_cpudata *cpudata)
 static void amd_pstate_update_limits(unsigned int cpu)
 {
 	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
-	struct amd_cpudata *cpudata = policy->driver_data;
+	struct amd_cpudata *cpudata;
 	u32 prev_high = 0, cur_high = 0;
 	int ret;
 	bool highest_perf_changed = false;

+	if (!policy)
+		return;
+
+	cpudata = policy->driver_data;
+
 	mutex_lock(&amd_pstate_driver_lock);
 	if ((!amd_pstate_prefcore) || (!cpudata->hw_prefcore))
 		goto free_cpufreq_put;
--- a/drivers/cpufreq/apple-soc-cpufreq.c
+++ b/drivers/cpufreq/apple-soc-cpufreq.c
@ -85,7 +85,7 @@ static const struct apple_soc_cpufreq_info soc_default_info = {
 	.cur_pstate_mask = 0, /* fallback */
 };

-static const struct of_device_id apple_soc_cpufreq_of_match[] = {
+static const struct of_device_id apple_soc_cpufreq_of_match[] __maybe_unused = {
 	{
 		.compatible = "apple,t8103-cluster-cpufreq",
 		.data = &soc_t8103_info,
--- a/drivers/cpufreq/armada-8k-cpufreq.c
+++ b/drivers/cpufreq/armada-8k-cpufreq.c
@ -132,7 +132,7 @@ static int __init armada_8k_cpufreq_init(void)
 	int ret = 0, opps_index = 0, cpu, nb_cpus;
 	struct freq_table *freq_tables;
 	struct device_node *node;
-	struct cpumask cpus;
+	static struct cpumask cpus;

 	node = of_find_matching_node_and_match(NULL, armada_8k_cpufreq_of_match,
 					       NULL);
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@ -166,6 +166,7 @@ static const struct of_device_id blocklist[] __initconst = {
 	{ .compatible = "qcom,sm6350", },
 	{ .compatible = "qcom,sm6375", },
 	{ .compatible = "qcom,sm7225", },
+	{ .compatible = "qcom,sm7325", },
 	{ .compatible = "qcom,sm8150", },
 	{ .compatible = "qcom,sm8250", },
 	{ .compatible = "qcom,sm8350", },
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@ -69,7 +69,6 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index)
 static const char *find_supply_name(struct device *dev)
 {
 	struct device_node *np __free(device_node) = of_node_get(dev->of_node);
-	struct property *pp;
 	int cpu = dev->id;

 	/* This must be valid for sure */
@ -77,14 +76,10 @@ static const char *find_supply_name(struct device *dev)
 		return NULL;

 	/* Try "cpu0" for older DTs */
-	if (!cpu) {
-		pp = of_find_property(np, "cpu0-supply", NULL);
-		if (pp)
-			return "cpu0";
-	}
+	if (!cpu && of_property_present(np, "cpu0-supply"))
+		return "cpu0";

-	pp = of_find_property(np, "cpu-supply", NULL);
-	if (pp)
+	if (of_property_present(np, "cpu-supply"))
 		return "cpu";

 	dev_dbg(dev, "no regulator for cpu%d\n", cpu);
--- a/drivers/cpufreq/loongson3_cpufreq.c
+++ b/drivers/cpufreq/loongson3_cpufreq.c
@ -176,7 +176,7 @@ static DEFINE_PER_CPU(struct loongson3_freq_data *, freq_data);
 static inline int do_service_request(u32 id, u32 info, u32 cmd, u32 val, u32 extra)
 {
 	int retries;
-	unsigned int cpu = smp_processor_id();
+	unsigned int cpu = raw_smp_processor_id();
 	unsigned int package = cpu_data[cpu].package;
 	union smc_message msg, last;

--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@ -738,7 +738,7 @@ static const struct mtk_cpufreq_platform_data mt8516_platform_data = {
 };

 /* List of machines supported by this driver */
-static const struct of_device_id mtk_cpufreq_machines[] __initconst = {
+static const struct of_device_id mtk_cpufreq_machines[] __initconst __maybe_unused = {
 	{ .compatible = "mediatek,mt2701", .data = &mt2701_platform_data },
 	{ .compatible = "mediatek,mt2712", .data = &mt2701_platform_data },
 	{ .compatible = "mediatek,mt7622", .data = &mt7622_platform_data },
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@ -28,9 +28,6 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>

-#include <asm/smp_plat.h>
-#include <asm/cpu.h>
-
 /* OPP tolerance in percentage */
 #define	OPP_TOLERANCE	4

--- a/drivers/cpufreq/pmac64-cpufreq.c
+++ b/drivers/cpufreq/pmac64-cpufreq.c
@ -505,7 +505,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpunode)
 			continue;
 		if (strcmp(loc, "CPU CLOCK"))
 			continue;
-		if (!of_get_property(hwclock, "platform-get-frequency", NULL))
+		if (!of_property_present(hwclock, "platform-get-frequency"))
 			continue;
 		break;
 	}
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@ -692,7 +692,7 @@ static void gpstate_timer_handler(struct timer_list *t)
 	}

 	/*
-	 * If PMCR was last updated was using fast_swtich then
+	 * If PMCR was last updated was using fast_switch then
 	 * We may have wrong in gpstate->last_lpstate_idx
 	 * value. Hence, read from PMCR to get correct data.
 	 */
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@ -9,6 +9,7 @@
 #include <linux/init.h>
 #include <linux/interconnect.h>
 #include <linux/interrupt.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@ -611,7 +611,7 @@ static struct platform_driver qcom_cpufreq_driver = {
 	},
 };

-static const struct of_device_id qcom_cpufreq_match_list[] __initconst = {
+static const struct of_device_id qcom_cpufreq_match_list[] __initconst __maybe_unused = {
 	{ .compatible = "qcom,apq8096", .data = &match_data_kryo },
 	{ .compatible = "qcom,msm8909", .data = &match_data_msm8909 },
 	{ .compatible = "qcom,msm8996", .data = &match_data_kryo },
--- a/drivers/cpufreq/spear-cpufreq.c
+++ b/drivers/cpufreq/spear-cpufreq.c
@ -171,10 +171,9 @@ static struct cpufreq_driver spear_cpufreq_driver = {
 static int spear_cpufreq_probe(struct platform_device *pdev)
 {
 	struct device_node *np;
-	const struct property *prop;
 	struct cpufreq_frequency_table *freq_tbl;
-	const __be32 *val;
-	int cnt, i, ret;
+	u32 val;
+	int cnt, ret, i = 0;

 	np = of_cpu_device_node_get(0);
 	if (!np) {
@ -186,26 +185,23 @@ static int spear_cpufreq_probe(struct platform_device *pdev)
 				&spear_cpufreq.transition_latency))
 		spear_cpufreq.transition_latency = CPUFREQ_ETERNAL;

-	prop = of_find_property(np, "cpufreq_tbl", NULL);
-	if (!prop || !prop->value) {
+	cnt = of_property_count_u32_elems(np, "cpufreq_tbl");
+	if (cnt <= 0) {
 		pr_err("Invalid cpufreq_tbl\n");
 		ret = -ENODEV;
 		goto out_put_node;
 	}

-	cnt = prop->length / sizeof(u32);
-	val = prop->value;
-
 	freq_tbl = kcalloc(cnt + 1, sizeof(*freq_tbl), GFP_KERNEL);
 	if (!freq_tbl) {
 		ret = -ENOMEM;
 		goto out_put_node;
 	}

-	for (i = 0; i < cnt; i++)
-		freq_tbl[i].frequency = be32_to_cpup(val++);
+	of_property_for_each_u32(np, "cpufreq_tbl", val)
+		freq_tbl[i++].frequency = val;

-	freq_tbl[i].frequency = CPUFREQ_TABLE_END;
+	freq_tbl[cnt].frequency = CPUFREQ_TABLE_END;

 	spear_cpufreq.freq_tbl = freq_tbl;

--- a/drivers/cpufreq/sti-cpufreq.c
+++ b/drivers/cpufreq/sti-cpufreq.c
@ -267,7 +267,7 @@ static int __init sti_cpufreq_init(void)
 		goto skip_voltage_scaling;
 	}

-	if (!of_get_property(ddata.cpu->of_node, "operating-points-v2", NULL)) {
+	if (!of_property_present(ddata.cpu->of_node, "operating-points-v2")) {
 		dev_err(ddata.cpu, "OPP-v2 not supported\n");
 		goto skip_voltage_scaling;
 	}
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@ -146,7 +146,7 @@ static bool dt_has_supported_hw(void)
 		return false;

 	for_each_child_of_node_scoped(np, opp) {
-		if (of_find_property(opp, "opp-supported-hw", NULL)) {
+		if (of_property_present(opp, "opp-supported-hw")) {
 			has_opp_supported_hw = true;
 			break;
 		}
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@ -16,6 +16,7 @@
 #include <linux/pm_opp.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
+#include <linux/sys_soc.h>

 #define REVISION_MASK				0xF
 #define REVISION_SHIFT				28
@ -90,6 +91,9 @@ struct ti_cpufreq_soc_data {
 	unsigned long efuse_shift;
 	unsigned long rev_offset;
 	bool multi_regulator;
+/* Backward compatibility hack: Might have missing syscon */
+#define TI_QUIRK_SYSCON_MAY_BE_MISSING	0x1
+	u8 quirks;
 };

 struct ti_cpufreq_data {
@ -254,6 +258,7 @@ static struct ti_cpufreq_soc_data omap34xx_soc_data = {
 	.efuse_mask = BIT(3),
 	.rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
 	.multi_regulator = false,
+	.quirks = TI_QUIRK_SYSCON_MAY_BE_MISSING,
 };

 /*
@ -281,6 +286,7 @@ static struct ti_cpufreq_soc_data omap36xx_soc_data = {
 	.efuse_mask = BIT(9),
 	.rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
 	.multi_regulator = true,
+	.quirks = TI_QUIRK_SYSCON_MAY_BE_MISSING,
 };

 /*
@ -295,6 +301,14 @@ static struct ti_cpufreq_soc_data am3517_soc_data = {
 	.efuse_mask = 0,
 	.rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
 	.multi_regulator = false,
+	.quirks = TI_QUIRK_SYSCON_MAY_BE_MISSING,
+};
+
+static const struct soc_device_attribute k3_cpufreq_soc[] = {
+	{ .family = "AM62X", .revision = "SR1.0" },
+	{ .family = "AM62AX", .revision = "SR1.0" },
+	{ .family = "AM62PX", .revision = "SR1.0" },
+	{ /* sentinel */ }
 };

 static struct ti_cpufreq_soc_data am625_soc_data = {
@ -340,7 +354,7 @@ static int ti_cpufreq_get_efuse(struct ti_cpufreq_data *opp_data,

 	ret = regmap_read(opp_data->syscon, opp_data->soc_data->efuse_offset,
 			  &efuse);
-	if (ret == -EIO) {
+	if (opp_data->soc_data->quirks & TI_QUIRK_SYSCON_MAY_BE_MISSING && ret == -EIO) {
 		/* not a syscon register! */
 		void __iomem *regs = ioremap(OMAP3_SYSCON_BASE +
 				opp_data->soc_data->efuse_offset, 4);
@ -378,10 +392,20 @@ static int ti_cpufreq_get_rev(struct ti_cpufreq_data *opp_data,
 	struct device *dev = opp_data->cpu_dev;
 	u32 revision;
 	int ret;
+	if (soc_device_match(k3_cpufreq_soc)) {
+		/*
+		 * Since the SR is 1.0, hard code the revision_value as
+		 * 0x1 here. This way we avoid re using the same register
+		 * that is giving us required information inside socinfo
+		 * anyway.
+		 */
+		*revision_value = 0x1;
+		goto done;
+	}

 	ret = regmap_read(opp_data->syscon, opp_data->soc_data->rev_offset,
 			  &revision);
-	if (ret == -EIO) {
+	if (opp_data->soc_data->quirks & TI_QUIRK_SYSCON_MAY_BE_MISSING && ret == -EIO) {
 		/* not a syscon register! */
 		void __iomem *regs = ioremap(OMAP3_SYSCON_BASE +
 				opp_data->soc_data->rev_offset, 4);
@ -400,6 +424,7 @@ static int ti_cpufreq_get_rev(struct ti_cpufreq_data *opp_data,

 	*revision_value = BIT((revision >> REVISION_SHIFT) & REVISION_MASK);

+done:
 	return 0;
 }

@ -419,7 +444,7 @@ static int ti_cpufreq_setup_syscon_register(struct ti_cpufreq_data *opp_data)
 	return 0;
 }

-static const struct of_device_id ti_cpufreq_of_match[] = {
+static const struct of_device_id ti_cpufreq_of_match[]  __maybe_unused = {
 	{ .compatible = "ti,am33xx", .data = &am3x_soc_data, },
 	{ .compatible = "ti,am3517", .data = &am3517_soc_data, },
 	{ .compatible = "ti,am43", .data = &am4x_soc_data, },