71 lines
2.1 KiB
Diff
71 lines
2.1 KiB
Diff
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From 3427331872c37b2edb42406c65764e1565b0591b Mon Sep 17 00:00:00 2001
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From: Perry Yuan <perry.yuan@amd.com>
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Date: Fri, 9 Aug 2024 14:09:05 +0800
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Subject: cpufreq: amd-pstate: add quirk for Ryzen 3000 series processor
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The Ryzen 3000 series processors have been observed lacking the
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nominal_freq and lowest_freq parameters in their ACPI tables. This
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absence causes issues with loading the amd-pstate driver on these
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systems. Introduces a fix to resolve the dependency issue
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by adding a quirk specifically for the Ryzen 3000 series.
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Reported-by: David Wang <00107082@163.com>
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Signed-off-by: Perry Yuan <perry.yuan@amd.com>
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---
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drivers/cpufreq/amd-pstate.c | 30 ++++++++++++++++++++++++++++++
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1 file changed, 30 insertions(+)
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--- a/drivers/cpufreq/amd-pstate.c
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+++ b/drivers/cpufreq/amd-pstate.c
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@@ -142,6 +142,11 @@ static struct quirk_entry quirk_amd_7k62
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.lowest_freq = 550,
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};
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+static struct quirk_entry quirk_amd_mts = {
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+ .nominal_freq = 3600,
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+ .lowest_freq = 550,
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+};
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+
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static int __init dmi_matched_7k62_bios_bug(const struct dmi_system_id *dmi)
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{
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/**
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@@ -158,6 +163,21 @@ static int __init dmi_matched_7k62_bios_
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return 0;
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}
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+static int __init dmi_matched_mts_bios_bug(const struct dmi_system_id *dmi)
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+{
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+ /**
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+ * match the broken bios for ryzen 3000 series processor support CPPC V2
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+ * broken BIOS lack of nominal_freq and lowest_freq capabilities
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+ * definition in ACPI tables
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+ */
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+ if (cpu_feature_enabled(X86_FEATURE_ZEN2)) {
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+ quirks = dmi->driver_data;
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+ pr_info("Overriding nominal and lowest frequencies for %s\n", dmi->ident);
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+ return 1;
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+ }
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+
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+ return 0;
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+}
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static const struct dmi_system_id amd_pstate_quirks_table[] __initconst = {
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{
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.callback = dmi_matched_7k62_bios_bug,
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@@ -168,6 +188,16 @@ static const struct dmi_system_id amd_ps
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},
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.driver_data = &quirk_amd_7k62,
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},
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+ {
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+ .callback = dmi_matched_mts_bios_bug,
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+ .ident = "AMD Ryzen 3000",
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+ .matches = {
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+ DMI_MATCH(DMI_PRODUCT_NAME, "B450M MORTAR MAX (MS-7B89)"),
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+ DMI_MATCH(DMI_BIOS_RELEASE, "06/10/2020"),
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+ DMI_MATCH(DMI_BIOS_VERSION, "5.14"),
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+ },
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+ .driver_data = &quirk_amd_mts,
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+ },
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{}
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};
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MODULE_DEVICE_TABLE(dmi, amd_pstate_quirks_table);
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