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From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Damien Hedde" <damien.hedde@greensocs.com>,
	"Huacai Chen" <zltjiangshi@gmail.com>,
	"Aleksandar Rikalo" <aleksandar.rikalo@syrmia.com>,
	"Luc Michel" <luc@lmichel.fr>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Paul Burton" <paulburton@kernel.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Hervé Poussineau" <hpoussin@reactos.org>,
	"Huacai Chen" <chenhc@lemote.com>,
	"Daniel P. Berrangé" <berrange@redhat.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>,
	"Richard Henderson" <rth@twiddle.net>
Subject: Re: [PATCH v4 00/21] hw/mips: Set CPU frequency
Date: Fri, 16 Oct 2020 18:45:13 +0200	[thread overview]
Message-ID: <86bde443-c6d7-ffea-8091-5a2677277778@amsat.org> (raw)
In-Reply-To: <20201012095804.3335117-1-f4bug@amsat.org>

On 10/12/20 11:57 AM, Philippe Mathieu-Daudé wrote:
> Since v3:
> - Introduced mips_cpu_create_with_clock() helper (Huacai)
> - Added R-b tags
> 
> Since v2:
> - Renamed "clk" -> "clk-in"
> - Renamed "cpuclk-out -> "cpu-refclk"
> 
> Missing review: patches 7, 10-13, 15-21
> 
> ~~~
> 
> All the MIPS cores emulated by QEMU provides the Coproc#0
> 'Count' register which can be used as a free running timer.
> 
> Since it's introduction in 2005 this timer uses a fixed
> frequency of 100 MHz (for a CPU freq of 200 MHz).
> While this is not an issue with Linux guests, it makes
> some firmwares behave incorrectly.
> 
> The Clock API allow propagating clocks. It is particularly
> useful when hardware dynamicly changes clock frequencies.
> 
> To be able to model such MIPS hardware, we need to refactor
> the MIPS hardware code to handle clocks.

Thanks, series applied to mips-next.


      parent reply	other threads:[~2020-10-16 16:47 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12  9:57 [PATCH v4 00/21] hw/mips: Set CPU frequency Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 01/21] util/cutils: Introduce freq_to_str() to display Hertz units Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 02/21] qdev-monitor: Display frequencies scaled to SI unit Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 03/21] hw/qdev-clock: Display error hint when clock is missing from device Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 04/21] hw/core/clock: add the clock_new helper function Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 05/21] target/mips: Move cpu_mips_get_random() with CP0 helpers Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 06/21] target/mips/cp0_timer: Explicit unit in variable name Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 07/21] target/mips/cp0_timer: Document TIMER_PERIOD origin Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 08/21] target/mips: Move cp0_count_ns to CPUMIPSState Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 09/21] target/mips/cpu: Calculate the CP0 timer period using the CPU frequency Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 10/21] target/mips/cpu: Make cp0_count_rate a property Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 11/21] target/mips/cpu: Allow the CPU to use dynamic frequencies Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 12/21] target/mips/cpu: Introduce mips_cpu_create_with_clock() helper Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 13/21] hw/mips/r4k: Explicit CPU frequency is 200 MHz Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 14/21] hw/mips/fuloong2e: Set CPU frequency to 533 MHz Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 15/21] hw/mips/mipssim: Correct CPU frequency Philippe Mathieu-Daudé
2020-10-12  9:57 ` [PATCH v4 16/21] hw/mips/jazz: Correct CPU frequencies Philippe Mathieu-Daudé
2020-10-12  9:58 ` [PATCH v4 17/21] hw/mips/cps: Expose input clock and connect it to CPU cores Philippe Mathieu-Daudé
2020-10-12  9:58 ` [PATCH v4 18/21] hw/mips/boston: Set CPU frequency to 1 GHz Philippe Mathieu-Daudé
2020-10-12  9:58 ` [PATCH v4 19/21] hw/mips/malta: Set CPU frequency to 320 MHz Philippe Mathieu-Daudé
2020-10-12  9:58 ` [PATCH v4 20/21] hw/mips/cps: Do not allow use without input clock Philippe Mathieu-Daudé
2020-10-12  9:58 ` [PATCH v4 21/21] target/mips/cpu: Display warning when CPU is used " Philippe Mathieu-Daudé
2020-10-16 16:45 ` Philippe Mathieu-Daudé [this message]

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