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[PATCH v3 0/4] Expose GT CNTFRQ as a CPU property to support AST2600
From: |
Andrew Jeffery |
Subject: |
[PATCH v3 0/4] Expose GT CNTFRQ as a CPU property to support AST2600 |
Date: |
Fri, 13 Dec 2019 16:19:47 +1030 |
Hello,
This is a v3 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.
v2 can be found here:
https://patchwork.ozlabs.org/cover/1203474/
Changes since v2:
* Address some minor review comments from Philippe and add tags
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 | 65 ++++++++++++++++++++++++++++++++++++------
target/arm/cpu.h | 5 +++-
target/arm/helper.c | 24 ++++++++++++----
4 files changed, 83 insertions(+), 14 deletions(-)
base-commit: 04c9c81b8fa2ee33f59a26265700fae6fc646062
--
git-series 0.9.1
- [PATCH v3 0/4] Expose GT CNTFRQ as a CPU property to support AST2600,
Andrew Jeffery <=
- [PATCH v3 1/4] target/arm: Remove redundant scaling of nexttick, Andrew Jeffery, 2019/12/13
- [PATCH v3 2/4] target/arm: Abstract the generic timer frequency, Andrew Jeffery, 2019/12/13
- [PATCH v3 3/4] target/arm: Prepare generic timer for per-platform CNTFRQ, Andrew Jeffery, 2019/12/13
- [PATCH v3 4/4] ast2600: Configure CNTFRQ at 1125MHz, Andrew Jeffery, 2019/12/13
- Re: [PATCH v3 0/4] Expose GT CNTFRQ as a CPU property to support AST2600, Peter Maydell, 2019/12/17