From: Andrew Jeffery <andrew@aj.id.au>
To: qemu-arm@nongnu.org
Cc: qemu-devel@nongnu.org, peter.maydell@linaro.org, clg@kaod.org,
joel@jms.id.au
Subject: [PATCH v2 0/4] Expose GT CNTFRQ as a CPU property to support AST2600
Date: Tue, 3 Dec 2019 14:44:36 +1030 [thread overview]
Message-ID: <20191203041440.6275-1-andrew@aj.id.au> (raw)
Hello,
This is a v2 of the belated follow-up from a few of my earlier attempts to fix
up the ARM generic timer for correct behaviour on the ASPEED AST2600 SoC. The
AST2600 clocks the generic timer at the rate of HPLL, which is configured to
1125MHz. This is significantly quicker than the currently hard-coded generic
timer rate of 62.5MHz and so we see "sticky" behaviour in the guest.
v1 can be found here:
https://patchwork.ozlabs.org/cover/1201887/
Changes since v1:
* Fix a user mode build failure from partial renaming of gt_cntfrq_period_ns()
* Add tags from Cedric and Richard
Please review.
Andrew
Andrew Jeffery (4):
target/arm: Remove redundant scaling of nexttick
target/arm: Abstract the generic timer frequency
target/arm: Prepare generic timer for per-platform CNTFRQ
ast2600: Configure CNTFRQ at 1125MHz
hw/arm/aspeed_ast2600.c | 3 +++
target/arm/cpu.c | 41 +++++++++++++++++++++++++++++++++--------
target/arm/cpu.h | 28 ++++++++++++++++++++++++++++
target/arm/helper.c | 24 ++++++++++++++++++------
4 files changed, 82 insertions(+), 14 deletions(-)
--
2.20.1
next reply other threads:[~2019-12-03 4:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 4:14 Andrew Jeffery [this message]
2019-12-03 4:14 ` [PATCH v2 1/4] target/arm: Remove redundant scaling of nexttick Andrew Jeffery
2019-12-03 4:14 ` [PATCH v2 2/4] target/arm: Abstract the generic timer frequency Andrew Jeffery
2019-12-03 6:09 ` Philippe Mathieu-Daudé
2019-12-03 12:48 ` Andrew Jeffery
2019-12-03 17:27 ` Philippe Mathieu-Daudé
2019-12-05 5:04 ` Andrew Jeffery
2019-12-03 4:14 ` [PATCH v2 3/4] target/arm: Prepare generic timer for per-platform CNTFRQ Andrew Jeffery
2019-12-03 6:19 ` Philippe Mathieu-Daudé
2019-12-03 12:59 ` Andrew Jeffery
2019-12-03 4:14 ` [PATCH v2 4/4] ast2600: Configure CNTFRQ at 1125MHz Andrew Jeffery
2019-12-03 6:20 ` Philippe Mathieu-Daudé
2019-12-03 6:05 ` [PATCH v2 0/4] Expose GT CNTFRQ as a CPU property to support AST2600 Philippe Mathieu-Daudé
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