[PATCH v5 6/6] arm64: arch_timer: acpi: add hisi timer errata data
From: Ding Tianhong <hidden>
Date: 2016-12-23 07:04:29
Also in:
linux-arm-kernel
Subsystem:
arm architected timer driver, clocksource, clockevent drivers, the rest · Maintainers:
Mark Rutland, Marc Zyngier, Daniel Lezcano, Thomas Gleixner, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2016-12-24 · Re: [PATCH v5 6/6] arm64: arch_timer: acpi: add hisi timer errata data · Kefeng Wang <hidden>
From: Hanjun Guo <redacted> Add hisi timer specific erratum fixes. v3: add hisilicon erratum 161601 for ACPI mode. v4: update some data structures. Signed-off-by: Hanjun Guo <redacted> Signed-off-by: Ding Tianhong <redacted> --- drivers/clocksource/arm_arch_timer.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 212bfa5..7b15d2a 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c@@ -1089,10 +1089,28 @@ struct gtdt_arch_timer_fixup { void *context; }; +#ifdef CONFIG_HISILICON_ERRATUM_161601 +static void __init erratum_workaround_enable(void *context) +{ + u64 erratum = (u64) context; + + if (erratum & HISILICON_161601) { + timer_unstable_counter_workaround = &arch_timer_hisi_161601; + static_branch_enable(&arch_timer_read_ool_enabled); + pr_info("Enabling workaround for HISILICON ERRATUM 161601\n"); + } +} +#endif + /* note: this needs to be updated according to the doc of OEM ID * and TABLE ID for different board. */ struct gtdt_arch_timer_fixup arch_timer_quirks[] __initdata = { +#ifdef CONFIG_HISILICON_ERRATUM_161601 + {"HISI", "hip05", 0, &erratum_workaround_enable, (void *) HISILICON_161601}, + {"HISI", "hip06", 0, &erratum_workaround_enable, (void *) HISILICON_161601}, + {"HISI", "hip07", 0, &erratum_workaround_enable, (void *) HISILICON_161601}, +#endif }; void __init arch_timer_acpi_quirks_handler(char *oem_id,
--
1.9.0
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