From patchwork Tue Mar 26 18:54:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13604874 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 37F68CD11DF for ; Tue, 26 Mar 2024 18:55:16 +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: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:In-Reply-To:References: List-Owner; bh=Ck1sPw9DPghWIwxF4kgiW/qwLg+N9HvA0npRAdoldkc=; b=nojoEQsShBegDV Z/SyelM/BoCE+9zI1zrjvorFl61qeLPp2AAp88W84Zc290UeVnmN4Er+tqQ/Apet7bjhAE4GyvFL8 71LzNivyAmKchU7i05GwxtcKRc1i+VVpc2pheZL18AEeoZ/a7q4xxbuJ+COgocOTpt1+77ltFCndR TpAEsnprGaIfWGZJjg4gBCHg1HN9ENgvp6YJGJNVYivkY71/BdWkuqOLwcat/hAOy+zuyLSiYSsx4 It8MpP700wgD56u3OgLvBMF2gh2KYeNA0fisKMKYCUHKsHmR/H6cXbRMWpfhuBILKkVXLYiqsZsO5 IIa8+80picLGmpRdetUA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpBwp-000000060nT-1fRD; Tue, 26 Mar 2024 18:54:59 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpBwl-000000060kg-35Bi for linux-arm-kernel@lists.infradead.org; Tue, 26 Mar 2024 18:54:57 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 42QIsgiY066709; Tue, 26 Mar 2024 13:54:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1711479282; bh=8cJ9129Ob8CCElav7kn38Mvyr3xFZdbL8GeEi/r+r6A=; h=From:To:CC:Subject:Date; b=L2KsZyKR6HktEPNjnKnI3zodcPAnSBAUnxww+Imw80H+bLIC8vO3hKdwjFwy7LC/a drAah5RszVEhYnfPgzvTuZwv3uJ21mfMG6IBc9PUm1IQ928UZCV1azXFA7qqknhMat EbaMiQ6OtY8vBAXyKpNUJUtuq5Z9Cboy9+Z3T8wI= Received: from DLEE101.ent.ti.com (dlee101.ent.ti.com [157.170.170.31]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 42QIsgdx027796 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 26 Mar 2024 13:54:42 -0500 Received: from DLEE102.ent.ti.com (157.170.170.32) by DLEE101.ent.ti.com (157.170.170.31) 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 13:54:42 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE102.ent.ti.com (157.170.170.32) 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 13:54:42 -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 42QIsfIj091446; Tue, 26 Mar 2024 13:54:41 -0500 From: Andrew Davis To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: , , , Andrew Davis Subject: [PATCH 1/6] arm64: dts: ti: k3-am65: Remove UART baud rate selection Date: Tue, 26 Mar 2024 13:54:36 -0500 Message-ID: <20240326185441.29656-1-afd@ti.com> X-Mailer: git-send-email 2.39.2 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_115455_951148_0F6EAE95 X-CRM114-Status: GOOD ( 13.58 ) 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-am65-main.dtsi | 1 - arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 1 - arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index ff857117d7193..670557c89f756 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -89,7 +89,6 @@ 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>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi index 6ff3ccc39fb44..4f808e5089755 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi @@ -43,7 +43,6 @@ 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>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi index 37527890ddeaf..eee072e44a42f 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi @@ -59,7 +59,6 @@ wkup_uart0: serial@42300000 { reg = <0x42300000 0x100>; interrupts = ; clock-frequency = <48000000>; - current-speed = <115200>; power-domains = <&k3_pds 150 TI_SCI_PD_EXCLUSIVE>; status = "disabled"; };