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[82.11.51.62]) by smtp.gmail.com with ESMTPSA id ck8-20020a170906c44800b0099bd5d28dc4sm3252637ejb.195.2023.08.27.03.04.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Aug 2023 03:04:37 -0700 (PDT) Message-ID: <09735262-1bc0-40cf-b139-22cccf70bcab@linux.com> Date: Sun, 27 Aug 2023 11:04:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] Revert "tty: serial: meson: Add a earlycon for the T7 SoC" To: Neil Armstrong , Greg Kroah-Hartman , Jiri Slaby , Kevin Hilman Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org References: <20230827082944.5100-1-tanure@linux.com> <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> Content-Language: en-US From: Lucas Tanure In-Reply-To: <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230827_030443_899387_06576829 X-CRM114-Status: GOOD ( 14.61 ) 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-Transfer-Encoding: base64 Content-Type: text/plain; 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[82.11.51.62]) by smtp.gmail.com with ESMTPSA id ck8-20020a170906c44800b0099bd5d28dc4sm3252637ejb.195.2023.08.27.03.04.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Aug 2023 03:04:37 -0700 (PDT) Message-ID: <09735262-1bc0-40cf-b139-22cccf70bcab@linux.com> Date: Sun, 27 Aug 2023 11:04:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] Revert "tty: serial: meson: Add a earlycon for the T7 SoC" To: Neil Armstrong , Greg Kroah-Hartman , Jiri Slaby , Kevin Hilman Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org References: <20230827082944.5100-1-tanure@linux.com> <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> Content-Language: en-US From: Lucas Tanure In-Reply-To: <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org On 27-08-2023 10:48, Neil Armstrong wrote: > Hi Lucas, > > Le 27/08/2023 à 10:29, Lucas Tanure a écrit : >> This reverts commit 6a4197f9763325043abf7690a21124a9facbf52e. >> New SoC will use ttyS0 instead of ttyAML, so T7 SoC doesn't need a >> OF_EARLYCON_DECLARE. >> >> Signed-off-by: Lucas Tanure >> --- >> Since V1: >> - add Signed-off-by: >> >>   drivers/tty/serial/meson_uart.c | 2 -- >>   1 file changed, 2 deletions(-) >> >> diff --git a/drivers/tty/serial/meson_uart.c >> b/drivers/tty/serial/meson_uart.c >> index c4f61d82fb727..790d910dafa5d 100644 >> --- a/drivers/tty/serial/meson_uart.c >> +++ b/drivers/tty/serial/meson_uart.c >> @@ -648,8 +648,6 @@ meson_serial_early_console_setup(struct >> earlycon_device *device, const char *opt >>   OF_EARLYCON_DECLARE(meson, "amlogic,meson-ao-uart", >>               meson_serial_early_console_setup); >> -OF_EARLYCON_DECLARE(meson, "amlogic,t7-uart", >> -            meson_serial_early_console_setup); >>   #define MESON_SERIAL_CONSOLE_PTR(_devname) >> (&meson_serial_console_##_devname) >>   #else > > How do you use earlycon with this removed ? > > Neil This is my kernel cmdline: console=ttyS0,921600 no_console_suspend earlycon=ttyS0,0xfe078000 And I can see my log: boot 64bit kernel [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd092] [ 0.000000] Linux version 6.5.0-rc7-next-20230825+ (tanureal@ryzen) (aarch64-none-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 10.3-2021.07 (arm-10.29)) 10.3.1 20210621, GNU ld (GNU Toolchain fo3 [ 0.000000] KASLR disabled due to lack of seed [ 0.000000] Machine model: Khadas vim4 [ 0.000000] OF: reserved mem: 0x0000000005000000..0x00000000052fffff (3072 KiB) nomap non-reusable secmon@5000000 [ 0.000000] OF: reserved mem: 0x0000000005300000..0x00000000072fffff (32768 KiB) nomap non-reusable secmon@5300000 ... [ 0.079368] io scheduler mq-deadline registered [ 0.079374] io scheduler kyber registered [ 0.079549] io scheduler bfq registered [ 0.083373] fe078000.serial: ttyS0 at MMIO 0xfe078000 (irq = 14, base_baud = 1500000) is a meson_uart [ 0.083403] printk: console [ttyS0] enabled As the log is OK, and T7 for now is binding against S4 code we should drop this patch and add a S4 one if needed. But just having this log is not enough for testing earlycon? I am assuming that by just having the log since 0.0000 is a good sign that earlycon is working. Could you give further guidance? Lucas Tanure From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 37E2EC83F10 for ; Sun, 27 Aug 2023 10:05:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=cXyWcrUq4V/k4TdHD5tVZRqtUJ3zMmDmUAqnYI+KSu8=; b=PPC9kY+nWlTAYZ fLW54P5yAgal4TB0cyT+oaS1/X3UgX9HMXMbIUlYSd+oXd//NOu8Ppa+RHkcF43hTDhF/u8E80u17 6RPx4bfauDW+Z1wRA+memFiZdOw7M220L91D6ztbFEuWPLe54jqo8X1Zz97xqT0P2dL79A8UFI7bg WUDb4PU99rbmWw8/xjmE1l9ffJDCAZ3y49mIqrzYRb3zUcRlnv/EzPDIw6Y68eudNDp67hF7uNm6s +o1NXBDzvnT68CxPsVk4s7G4/S/3N1Ih50AilbcpCy1ETCAwnxS9KSN1ZANwCTr+m3/9dUkkl62DB tgquZFsW/7zoZE+QlePg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qaCdU-007mOz-38; Sun, 27 Aug 2023 10:04:48 +0000 Received: from mail-ej1-f52.google.com ([209.85.218.52]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qaCdP-007mOO-2h; Sun, 27 Aug 2023 10:04:48 +0000 Received: by mail-ej1-f52.google.com with SMTP id a640c23a62f3a-99c353a395cso288675066b.2; Sun, 27 Aug 2023 03:04:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693130678; x=1693735478; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=k3yLEQRh2p6qcn+rlG3lKXhYcStLscrFlLBAG5p3HJg=; b=e9b31Rc3UD4fEig0VLRbYarlbLsuHQjRMpROYil1k+02isIF5Xw9/JWb9bISOddYx3 OMQZhdL5REPjj4NpJpU2TYeC1GTLkD/BWIPWh+j7epjnhK71ii/G/39FpfCGhbSEU3i6 0mBZoq+DtU3HfDZpL+xi8UeG6qc/BcNzDwk1Yt1so53oTKJM4ef9KiIZDpIi+shnbYmX 99x3ugj+vWk3u/rKqwEwk4DegEuc8hE0GTLwdf8KSIOBQLiBptvHbr60vL6Moogr2aV7 E7itg8rQkwLiq+DC9/aThujTnBN+rb0BOtMWtJBpkYoIIaO8MSQ1IyJnt+Z1ixZAELRB EaYg== X-Gm-Message-State: AOJu0Yy5Lkt5q3sSqiavD8GV8w5UNnfhOCL3h94xZ7BOsDy95i1Ulv2I evjsQkeaw7E5/CSnPriyVBo= X-Google-Smtp-Source: AGHT+IGH1Bhx1BbidsnYdjWIJhV9dyqreMXlr2EtXDJOyKYP8FbqwIp6lVVa1c9wNDavJV05rKhi6g== X-Received: by 2002:a17:907:7635:b0:9a1:d915:d8dd with SMTP id jy21-20020a170907763500b009a1d915d8ddmr9873398ejc.10.1693130677691; Sun, 27 Aug 2023 03:04:37 -0700 (PDT) Received: from [192.168.86.246] (cpc87451-finc19-2-0-cust61.4-2.cable.virginm.net. [82.11.51.62]) by smtp.gmail.com with ESMTPSA id ck8-20020a170906c44800b0099bd5d28dc4sm3252637ejb.195.2023.08.27.03.04.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Aug 2023 03:04:37 -0700 (PDT) Message-ID: <09735262-1bc0-40cf-b139-22cccf70bcab@linux.com> Date: Sun, 27 Aug 2023 11:04:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] Revert "tty: serial: meson: Add a earlycon for the T7 SoC" To: Neil Armstrong , Greg Kroah-Hartman , Jiri Slaby , Kevin Hilman Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org References: <20230827082944.5100-1-tanure@linux.com> <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> Content-Language: en-US From: Lucas Tanure In-Reply-To: <7bf9e716-0ff2-56d5-07ab-db027901454e@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230827_030443_899387_06576829 X-CRM114-Status: GOOD ( 14.61 ) 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: base64 Content-Type: text/plain; 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