From: Marek Szyprowski <m.szyprowski@samsung.com>
To: Paul Cercueil <paul@crapouillou.net>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Peter Griffin <peter.griffin@linaro.org>,
Alim Akhtar <alim.akhtar@samsung.com>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] ARM: dts: samsung: exynos4210-i9100: Enable RTS/CTS in Bluetooth node
Date: Mon, 7 Sep 2026 10:16:42 +0200 [thread overview]
Message-ID: <62afdbc4-f21a-477a-b0ab-de20c96b4b6d@samsung.com> (raw)
In-Reply-To: <1666390417d0d9b8f58a7bdad1b8ecb475ba0d4f.camel@crapouillou.net>
On 03.09.2026 15:29, Paul Cercueil wrote:
> Le mercredi 02 septembre 2026 à 10:36 +0200, Marek Szyprowski a écrit :
>> On 29.08.2026 12:15, Paul Cercueil wrote:
>>> The BCM4330 is connected using CTS/RTS too, so add the 'uart-has-
>>> rtscts'
>>> property.
>>>
>>> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
>> Indeed the CTS/RTS pins are used for BT on most of the ARM Exynos
>> boards,
>> as the "<&uartX_fctl>" property is assigned for pinctl-0. This is not
>> really
>> specific to i9100, so maybe this property should be added to other
>> dts?
> I can add it to all exynos4 boards that use the "uartX_fctl" property.
>
>
>> However I wonder if Samsung UART driver actually use this "uart-has-
>> rtscts"
>> DT property? A quick "git grep uart-has-rtscts drivers/tty" shows
>> nothing
>> related to Samsung Exynos...
> It looks like it does not. I still think the DT property should be here
> but I won't fight over this.
I also don't have strong opinion on this issue. Krzysztof: do You see
any benefit from adding this "uart-has-rtscts" property, just to describe
precisely the actual hardware, even if it won't be used by any driver?
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
next prev parent reply other threads:[~2026-09-07 8:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20260829101532eucas1p29f4e04d4dfd169377793c276221059a6@eucas1p2.samsung.com>
2026-08-29 10:15 ` [PATCH v2] ARM: dts: samsung: exynos4210-i9100: Enable RTS/CTS in Bluetooth node Paul Cercueil
2026-09-01 14:27 ` Paul Cercueil
2026-09-02 8:36 ` Marek Szyprowski
2026-09-03 13:29 ` Paul Cercueil
2026-09-07 8:16 ` Marek Szyprowski [this message]
2026-09-09 5:57 ` Krzysztof Kozlowski
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