From: Neil Armstrong <narmstrong@baylibre.com>
To: Hans Verkuil <hverkuil@xs4all.nl>,
mchehab@kernel.org, devicetree@vger.kernel.org
Cc: linux-amlogic@lists.infradead.org, linux-media@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] media: dt-bindings: media: meson-ao-cec: Add G12A AO-CEC-B Compatible
Date: Wed, 27 Mar 2019 14:08:16 +0100 [thread overview]
Message-ID: <74e84d99-dc7e-2779-fed0-e6a9e8324ba7@baylibre.com> (raw)
In-Reply-To: <518678c1-2e1d-ca27-55bd-0dd10965354f@xs4all.nl>
On 27/03/2019 13:39, Hans Verkuil wrote:
> On 3/25/19 6:34 PM, Neil Armstrong wrote:
>> The Amlogic G12A embeds a second CEC controller named AO-CEC-B, and
>> the other one is AO-CEC-A described by the current bindings.
>>
>> The registers interface is very close but the internal architecture
>
> registers -> register
>
>> is totally different.
>>
>> The other difference is the closk source, the AO-CEC-B takes the
>
> closk -> clock
>
>> "oscin", the Always-On Oscillator clock, as input and embeds a
>> dual-divider clock divider to provide the precise 32768Hz base
>> clock for CEC communication.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
>> ---
>> .../devicetree/bindings/media/meson-ao-cec.txt | 15 +++++++++++----
>> 1 file changed, 11 insertions(+), 4 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/media/meson-ao-cec.txt b/Documentation/devicetree/bindings/media/meson-ao-cec.txt
>> index 8671bdb08080..d6e2f9cf0aaf 100644
>> --- a/Documentation/devicetree/bindings/media/meson-ao-cec.txt
>> +++ b/Documentation/devicetree/bindings/media/meson-ao-cec.txt
>> @@ -4,16 +4,23 @@ The Amlogic Meson AO-CEC module is present is Amlogic SoCs and its purpose is
>> to handle communication between HDMI connected devices over the CEC bus.
>>
>> Required properties:
>> - - compatible : value should be following
>> - "amlogic,meson-gx-ao-cec"
>> + - compatible : value should be following depending on the SoC :
>> + For GXBB, GXL, GXM and G12A (AO_CEC_A module) :
>> + "amlogic,meson-gx-ao-cec"
>> + For G12A (AO_CEC_B module) :
>> + "amlogic,meson-g12a-ao-cec"
>
> The driver uses "amlogic,meson-g12a-ao-cec-b", so there is a mismatch between
> the bindings and the driver.
>
> Please repost since it is important that the two correspond.
Indeed, thanks for spotting this, I'll fix the typos and the compatible in v2
Neil
>
> Thanks!
>
> Hans
>
>>
>> - reg : Physical base address of the IP registers and length of memory
>> mapped region.
>>
>> - interrupts : AO-CEC interrupt number to the CPU.
>> - clocks : from common clock binding: handle to AO-CEC clock.
>> - - clock-names : from common clock binding: must contain "core",
>> - corresponding to entry in the clocks property.
>> + - clock-names : from common clock binding, must contain :
>> + For GXBB, GXL, GXM and G12A (AO_CEC_A module) :
>> + - "core"
>> + For G12A (AO_CEC_B module) :
>> + - "oscin"
>> + corresponding to entry in the clocks property.
>> - hdmi-phandle: phandle to the HDMI controller
>>
>> Example:
>>
>
next prev parent reply other threads:[~2019-03-27 13:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-25 17:34 [PATCH 0/3] media: platform: Add support for the Amlogic Meson G12A AO CEC Controller Neil Armstrong
2019-03-25 17:34 ` [PATCH 1/3] media: dt-bindings: media: meson-ao-cec: Add G12A AO-CEC-B Compatible Neil Armstrong
2019-03-27 12:39 ` Hans Verkuil
2019-03-27 13:08 ` Neil Armstrong [this message]
2019-03-25 17:35 ` [PATCH 2/3] media: platform: meson: Add Amlogic Meson G12A AO CEC Controller driver Neil Armstrong
2019-03-27 12:52 ` Hans Verkuil
2019-03-27 13:19 ` Neil Armstrong
2019-03-27 13:47 ` Hans Verkuil
2019-03-25 17:35 ` [PATCH 3/3] MAINTAINERS: Update AO CEC with ao-cec-g12a driver Neil Armstrong
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