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([2a01:e0a:90c:e290:71f0:4862:1742:37fd]) by smtp.gmail.com with ESMTPSA id u12sm15793274wrr.40.2021.06.14.00.56.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Jun 2021 00:56:02 -0700 (PDT) Subject: Re: [PATCH] ARM: dts: meson: Set the fifo-size of uart_A to 128 bytes To: Martin Blumenstingl , linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, jbrunet@baylibre.com, khilman@baylibre.com References: <20210604170844.2201229-1-martin.blumenstingl@googlemail.com> From: Neil Armstrong Organization: Baylibre Message-ID: <0e3b8d5b-756b-fefe-fbd3-8a786d7344ac@baylibre.com> Date: Mon, 14 Jun 2021 09:56:01 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210604170844.2201229-1-martin.blumenstingl@googlemail.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210614_005608_013261_2A0368D2 X-CRM114-Status: GOOD ( 17.38 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 04/06/2021 19:08, Martin Blumenstingl wrote: > The first UART controller in the "Everything-Else" power domain is > called uart_A. Unlike all other UARTs (which use a 64 byte fifo-size in > hardware) uart_A has a fifo-size of 128 bytes. This UART controller is > typically used for Bluetooth HCI. > The fifo-size of 128 bytes is valid from all SoCs from Meson6 (or > possibly even earlier) all the way up to the latest 64-bit ones. > > Signed-off-by: Martin Blumenstingl > --- > arch/arm/boot/dts/meson.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi > index 8bae6ed0abb2..bd0e864964e9 100644 > --- a/arch/arm/boot/dts/meson.dtsi > +++ b/arch/arm/boot/dts/meson.dtsi > @@ -50,6 +50,7 @@ uart_A: serial@84c0 { > compatible = "amlogic,meson6-uart", "amlogic,meson-uart"; > reg = <0x84c0 0x18>; > interrupts = ; > + fifo-size = <128>; > status = "disabled"; > }; > > Acked-by: Neil Armstrong _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic