From: Damien Hedde <damien.hedde@greensocs.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Daniel P. Berrange" <berrange@redhat.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
"Alistair Francis" <alistair@alistair23.me>,
"Mark Burton" <mark.burton@greensocs.com>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
qemu-arm <qemu-arm@nongnu.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: Re: [PATCH v6 9/9] hw/arm/xilinx_zynq: connect uart clocks to slcr
Date: Tue, 3 Dec 2019 15:59:38 +0100 [thread overview]
Message-ID: <f373af20-0df4-384f-b1a3-10bf873c315e@greensocs.com> (raw)
In-Reply-To: <CAFEAcA96yu6Uttsi6eZokjyxE8At18ADF+Q6c7Na2ArvdLME+Q@mail.gmail.com>
On 12/2/19 4:34 PM, Peter Maydell wrote:
> On Wed, 4 Sep 2019 at 13:56, Damien Hedde <damien.hedde@greensocs.com> wrote:
>>
>> Add the connection between the slcr's output clocks and the uarts inputs.
>>
>> Also add the main board clock 'ps_clk', which is hard-coded to 33.33MHz
>> (the default frequency). This clock is used to feed the slcr's input
>> clock.
>>
>> Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
>
> Nothing obviously wrong in the body of the patch, but as with
> 7 and 8, review from a Xilinx person would be helpful.
>
> /* board base frequency: 33.333333 MHz */
> #define PS_CLK_FREQUENCY (100 * 1000 * 1000 / 3)
>
> This is interesting, because it's not an integer... I'll come back
> to this topic in a reply to the cover letter in a moment.
For this precise case, what I wanted is the resulting integer which I
got from the device trees in linux (btw I should probably add this point
in comment). Just thought it was more readable this way than "33333333".
--
Damien
next prev parent reply other threads:[~2019-12-03 15:25 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-04 12:55 [Qemu-devel] [PATCH v6 0/9] Clock framework API Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 1/9] hw/core/clock: introduce clock objects Damien Hedde
2019-11-25 13:07 ` Philippe Mathieu-Daudé
2019-11-25 13:37 ` Philippe Mathieu-Daudé
2019-12-03 15:14 ` Damien Hedde
2019-12-02 13:42 ` Peter Maydell
2019-12-03 15:28 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 2/9] hw/core/clock-vmstate: define a vmstate entry for clock state Damien Hedde
2019-11-25 13:05 ` Philippe Mathieu-Daudé
2019-12-02 13:44 ` Peter Maydell
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 3/9] qdev: add clock input&output support to devices Damien Hedde
2019-11-25 13:30 ` Philippe Mathieu-Daudé
2019-12-03 15:35 ` Damien Hedde
2019-12-02 14:34 ` Peter Maydell
2019-12-04 9:05 ` Damien Hedde
2019-12-04 9:53 ` Philippe Mathieu-Daudé
2019-12-04 11:58 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 4/9] qdev-monitor: print the device's clock with info qtree Damien Hedde
2019-12-02 14:35 ` Peter Maydell
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 5/9] qdev-clock: introduce an init array to ease the device construction Damien Hedde
2019-12-02 15:13 ` Peter Maydell
2019-12-04 11:04 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 6/9] docs/clocks: add device's clock documentation Damien Hedde
2019-12-02 15:17 ` Peter Maydell
2019-12-04 12:11 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 7/9] hw/misc/zynq_slcr: add clock generation for uarts Damien Hedde
2019-12-02 15:20 ` Peter Maydell
2019-12-04 12:51 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 8/9] hw/char/cadence_uart: add clock support Damien Hedde
2019-12-02 15:24 ` Peter Maydell
2019-12-04 13:35 ` Damien Hedde
2019-09-04 12:55 ` [Qemu-devel] [PATCH v6 9/9] hw/arm/xilinx_zynq: connect uart clocks to slcr Damien Hedde
2019-12-02 15:34 ` Peter Maydell
2019-12-03 14:59 ` Damien Hedde [this message]
2019-12-03 15:29 ` Philippe Mathieu-Daudé
2019-12-02 16:15 ` [PATCH v6 0/9] Clock framework API Peter Maydell
2019-12-04 16:40 ` Damien Hedde
2019-12-04 20:34 ` Philippe Mathieu-Daudé
2019-12-05 9:36 ` Damien Hedde
2019-12-05 9:59 ` Philippe Mathieu-Daudé
2019-12-05 10:21 ` Dr. David Alan Gilbert
2019-12-05 10:44 ` Philippe Mathieu-Daudé
2019-12-05 10:56 ` Dr. David Alan Gilbert
2019-12-05 11:01 ` Philippe Mathieu-Daudé
2019-12-06 12:46 ` Cleber Rosa
2019-12-06 13:48 ` Dr. David Alan Gilbert
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