From patchwork Tue Mar 26 18:54:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13604876 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 CB156C54E67 for ; Tue, 26 Mar 2024 18:55:37 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7jZ9V4QlAjH0P1rCHBQZ8nl1RNOBAbEjhgleRpNE2lA=; b=fql4mjd8LzNXrc eobCRokVQ4yK/tXaBBp6eEOB7SFmYFaWYDmfj2g73RlWB/JDQwddg21bLXWPCdj+Nae6G5wAvIOIq bgiD7k1+VJcxmCysG5Ca2tVZVW2p8TpokTG/XUaQz4TuvcvZx1+6+/ESUJAp3f7EvCqrTQ6Dm8qvT Ni3BKwJqUhIvNazo/2ShHuB9IgbixhRb/lcTJOJ5Qy5uqm2rGnDm1nSaJ1h9W+1DsmXJa91skizRF f4OqsmYO4kwBQeetq1U9lsc2j+vzLTiN5ljzxll3HtR6RJ99SY/wBs0rGkjHfrOtZV67ShKstZ2/j A+NZhuFd91Auw0fw4TEA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpBxB-000000060wU-0rxR; Tue, 26 Mar 2024 18:55:21 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpBwm-000000060kk-3oEN for linux-arm-kernel@lists.infradead.org; Tue, 26 Mar 2024 18:54:58 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 42QIshau062540; Tue, 26 Mar 2024 13:54:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1711479283; bh=xK/JV7sq7ykmOnZufg5+rLTOfjmClJd6clfSfUVThRU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=I2wM1wHnni1nDiJBr06ZjyRRHv+AX8LLNbEKet4aiFCOPwa3FbHqyJkg+fawxbwOa xxMkPtk+TuS2iDzjiVdWoxCiLTrnZ32lhjoNhwVDUnEp4uO5LRq+P1ZJPmb/m7UR7u WBYBpwE0oFr9V9iL643RQ33hfw3HnZsuC0Rr6aEU= Received: from DFLE111.ent.ti.com (dfle111.ent.ti.com [10.64.6.32]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 42QIshR5027804 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 26 Mar 2024 13:54:43 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 26 Mar 2024 13:54:43 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 26 Mar 2024 13:54:43 -0500 Received: from lelvsmtp5.itg.ti.com ([10.249.42.149]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 42QIsfIm091446; Tue, 26 Mar 2024 13:54:43 -0500 From: Andrew Davis To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , Andrew Davis Subject: [PATCH 4/6] arm64: dts: ti: k3-j721e: Remove UART baud rate selection Date: Tue, 26 Mar 2024 13:54:39 -0500 Message-ID: <20240326185441.29656-4-afd@ti.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240326185441.29656-1-afd@ti.com> References: <20240326185441.29656-1-afd@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240326_115457_118283_F6061E73 X-CRM114-Status: GOOD ( 13.44 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As described in the binding document for the "current-speed" property: "This should only be present in case a driver has no chance to know the baud rate of the slave device." This is not the case for the UART used in K3 devices, the current baud-rate can be calculated from the registers. Having this property has the effect of actually skipping the baud-rate setup in some drivers as it assumes it will already be set to this rate, which may not always be the case. It seems this property's purpose was mistaken as selecting the desired baud-rate, which it does not. It would have been wrong to select that here anyway as DT is not the place for configuration, especially when there are already more standard ways to set serial baud-rates. Signed-off-by: Andrew Davis --- arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 10 ---------- arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi | 2 -- 2 files changed, 12 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi index c7eafbc862f96..0da785be80ff4 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi @@ -1337,7 +1337,6 @@ main_uart0: serial@2800000 { reg = <0x00 0x02800000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 146 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 146 0>; clock-names = "fclk"; @@ -1349,7 +1348,6 @@ main_uart1: serial@2810000 { reg = <0x00 0x02810000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 278 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 278 0>; clock-names = "fclk"; @@ -1361,7 +1359,6 @@ main_uart2: serial@2820000 { reg = <0x00 0x02820000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 279 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 279 0>; clock-names = "fclk"; @@ -1373,7 +1370,6 @@ main_uart3: serial@2830000 { reg = <0x00 0x02830000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 280 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 280 0>; clock-names = "fclk"; @@ -1385,7 +1381,6 @@ main_uart4: serial@2840000 { reg = <0x00 0x02840000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 281 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 281 0>; clock-names = "fclk"; @@ -1397,7 +1392,6 @@ main_uart5: serial@2850000 { reg = <0x00 0x02850000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 282 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 282 0>; clock-names = "fclk"; @@ -1409,7 +1403,6 @@ main_uart6: serial@2860000 { reg = <0x00 0x02860000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 283 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 283 0>; clock-names = "fclk"; @@ -1421,7 +1414,6 @@ main_uart7: serial@2870000 { reg = <0x00 0x02870000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 284 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 284 0>; clock-names = "fclk"; @@ -1433,7 +1425,6 @@ main_uart8: serial@2880000 { reg = <0x00 0x02880000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 285 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 285 0>; clock-names = "fclk"; @@ -1445,7 +1436,6 @@ main_uart9: serial@2890000 { reg = <0x00 0x02890000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 286 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 286 0>; clock-names = "fclk"; diff --git a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi index 4618b697fbc47..8fc768d84b759 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721e-mcu-wakeup.dtsi @@ -243,7 +243,6 @@ wkup_uart0: serial@42300000 { reg = <0x00 0x42300000 0x00 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 287 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 287 0>; clock-names = "fclk"; @@ -255,7 +254,6 @@ mcu_uart0: serial@40a00000 { reg = <0x00 0x40a00000 0x00 0x100>; interrupts = ; clock-frequency = <96000000>; - current-speed = <115200>; power-domains = <&k3_pds 149 TI_SCI_PD_EXCLUSIVE>; clocks = <&k3_clks 149 0>; clock-names = "fclk";