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From: sylvester.nawrocki@gmail.com (Sylwester Nawrocki)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 05/10] s5p-fimc: Add device tree based sensors registration
Date: Sat, 09 Feb 2013 00:26:49 +0100	[thread overview]
Message-ID: <511589B9.7030007@gmail.com> (raw)
In-Reply-To: <5112EA60.6090209@wwwdotorg.org>

On 02/07/2013 12:42 AM, Stephen Warren wrote:
> On 02/01/2013 12:09 PM, Sylwester Nawrocki wrote:
>> The sensor (I2C and/or SPI client) devices are instantiated by their
>> corresponding control bus drivers. Since the I2C client's master clock
>> is often provided by a video bus receiver (host interface) or other
>> than I2C/SPI controller device, the drivers of those client devices
>> are not accessing hardware in their driver's probe() callback. Instead,
>> after enabling clock, the host driver calls back into a sub-device
>> when it wants to activate them. This pattern is used by some in-tree
>> drivers and this patch also uses it for DT case. This patch is intended
>> as a first step for adding device tree support to the S5P/Exynos SoC
>> camera drivers. The second one is adding support for asynchronous
>> sub-devices registration and clock control from sub-device driver
>> level. The bindings shall not change when asynchronous probing support
>> is added.
>
>> diff --git a/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt b/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt
>
>> +The sensor device nodes should be added as their control bus controller
>
> I think "as" should be "to"?

Yes, something is wrong here. Hopefully this is more correct:

The sensor device nodes should be added to their control bus controller
(e.g. I2C0) nodes and linked to a port node in the csis or parallel-ports

>> +(e.g. I2C0) child nodes and linked to a port node in the csis or parallel-ports
>> +node, using common the common video interfaces bindings, i.e. port/endpoint
                ^^^^^^^^
And this needs correction too.

>> +node pairs. The implementation of this binding requires clock-frequency
>> +property to be present in the sensor device nodes.

  reply	other threads:[~2013-02-08 23:26 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-01 19:09 [PATCH v4 00/10] Device tree support for Exynos SoC camera subsystem Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 01/10] s5p-csis: Add device tree support Sylwester Nawrocki
2013-02-06 23:36   ` Stephen Warren
2013-02-08 22:29     ` Sylwester Nawrocki
2013-02-08 23:27       ` Stephen Warren
2013-02-09  0:31         ` Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 02/10] s5p-fimc: Add device tree support for FIMC devices Sylwester Nawrocki
2013-02-06 23:40   ` Stephen Warren
2013-02-08 23:16     ` Sylwester Nawrocki
2013-02-08 23:21       ` Stephen Warren
2013-02-09  0:05         ` Sylwester Nawrocki
2013-02-09  0:32           ` Stephen Warren
2013-02-09 22:29             ` Sylwester Nawrocki
2013-02-09 22:52               ` Sylwester Nawrocki
2013-02-11 21:50               ` Stephen Warren
2013-02-12 22:39                 ` Sylwester Nawrocki
2013-02-13 20:42                   ` Stephen Warren
2013-02-14 23:03                     ` Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 03/10] s5p-fimc: Add device tree support for FIMC-LITE devices Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 04/10] s5p-fimc: Add device tree support for the main media device driver Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 05/10] s5p-fimc: Add device tree based sensors registration Sylwester Nawrocki
2013-02-06 23:42   ` Stephen Warren
2013-02-08 23:26     ` Sylwester Nawrocki [this message]
2013-02-01 19:09 ` [PATCH v4 06/10] s5p-fimc: Use pinctrl API for camera ports configuration Sylwester Nawrocki
2013-02-06 23:44   ` Stephen Warren
2013-02-08 23:30     ` Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 07/10] ARM: dts: Add camera to node exynos4.dtsi Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 08/10] ARM: dts: Add ISP power domain node for Exynos4x12 Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 09/10] ARM: dts: Add FIMC and MIPI CSIS device nodes " Sylwester Nawrocki
2013-02-01 19:09 ` [PATCH v4 10/10] ARM: dts: Correct camera pinctrl nodes for Exynos4x12 SoCs Sylwester Nawrocki

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