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From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Quentin Schulz <quentin.schulz@cherry.de>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Quentin Schulz <quentin.schulz@theobroma-systems.com>,
	Jacopo Mondi <jacopo@jmondi.org>
Cc: Johan Hovold <johan@kernel.org>,
	Kieran Bingham <kieran.bingham@ideasonboard.com>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, dave.stevenson@raspberrypi.com
Subject: Re: [PATCH 2/2] media: ov5675: Elongate reset to first transaction minimum gap
Date: Thu, 11 Jul 2024 13:25:27 +0100	[thread overview]
Message-ID: <b30e10b3-6916-45a3-81c8-182d81d4a34e@linaro.org> (raw)
In-Reply-To: <3646cd1f-09f1-4e80-8d55-a9ac25cbf81d@cherry.de>

On 11/07/2024 13:22, Quentin Schulz wrote:
> Hi Bryan,
> 
> On 7/11/24 2:07 PM, Bryan O'Donoghue wrote:
>> On 11/07/2024 12:41, Quentin Schulz wrote:
>> Worst case XVCLK period is 1.365 milliseconds.
>>
>> If your theory on the GPIO is correct, its still difficult to see how 
>> @ 6MHz - which we don't yet support and probably never will, that 1.5 
>> milliseconds would be insufficient.
>>
>> So - I'm happy enough to throw out the first patch and give a range of 
>> 1.5 to 1.6 milliseconds instead.
>>
> 
> Works for me.

Great.

Just for record, I'll update power_off() too to match the logic we are 
applying @ power_on since we've decided the calculation based on XVCLK 
is overkill.

---
bod

      reply	other threads:[~2024-07-11 12:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-11 10:20 [PATCH 0/2] media: ov5675: Fixup ov5675 reset failures Bryan O'Donoghue
2024-07-11 10:20 ` [PATCH 1/2] media: ov5675: Derive delay cycles from the clock rate reported Bryan O'Donoghue
2024-07-11 10:32   ` Quentin Schulz
2024-07-11 10:20 ` [PATCH 2/2] media: ov5675: Elongate reset to first transaction minimum gap Bryan O'Donoghue
2024-07-11 10:40   ` Quentin Schulz
2024-07-11 11:17     ` Dave Stevenson
2024-07-11 11:24       ` Bryan O'Donoghue
2024-07-11 11:22     ` Bryan O'Donoghue
2024-07-11 11:28       ` Bryan O'Donoghue
2024-07-11 11:41       ` Quentin Schulz
2024-07-11 12:07         ` Bryan O'Donoghue
2024-07-11 12:22           ` Quentin Schulz
2024-07-11 12:25             ` Bryan O'Donoghue [this message]

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