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Fri, 01 Dec 2023 11:57:55 -0800 (PST) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.googlemail.com with ESMTPSA id e20-20020aa78c54000000b006cb88e7c005sm3362798pfd.203.2023.12.01.11.57.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Dec 2023 11:57:54 -0800 (PST) Message-ID: Date: Fri, 1 Dec 2023 11:57:53 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: defconfig: Increase SERIAL_8250_NR_UARTS to 10 Content-Language: en-US To: Heiko Stuebner , linux-rockchip@lists.infradead.org, Francesco Dolcini Cc: linux-arm-kernel@lists.infradead.org, quentin.schulz@theobroma-systems.com, Heiko Stuebner References: <20231201191228.343230-1-heiko@sntech.de> From: Florian Fainelli In-Reply-To: <20231201191228.343230-1-heiko@sntech.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231201_115757_037917_F378866C X-CRM114-Status: GOOD ( 11.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org +Francesco, On 12/1/23 11:12, Heiko Stuebner wrote: > From: Heiko Stuebner > > Boards using socs like the rk3588 can use up to 10 uarts, so the default > of 4 is way too low. Therefore increase the maximum number to 10. > > SERIAL_8250_RUNTIME_UARTS on the other hand describes the number of uart > data structures to prepare before registering them. This option can stay > at its default value of 4 since for one it can be changed via a boot > parameter 8250.nr_uarts but also since > commit 9d86719f8769 ("serial: 8250: Allow using ports higher than SERIAL_8250_RUNTIME_UARTS") > > the kernel can register uarts dynamically that are above the > SERIAL_8250_RUNTIME_UARTS threshold. > > Signed-off-by: Heiko Stuebner There is a competing patch set from Francesco being submitted as well: https://lore.kernel.org/all/20231201171544.1901-1-francesco@dolcini.it/ looks like some coordination is necessary. -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel