From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.127.231.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794567100; b=nDmW5IVidE9BucMXCI+nEmal407vLHIclB+SrYzVND3fA/mHRQ+KvnHWZsQg68db6gW0 9PAAz5kiZvkYVhT8GXyYHTYGvXsBuqjZj0JnWflroOZjWps90Pr2fdztIhxT10QIfvHBt QSZtPqbLkLUjygzRfISpPo77egehiJsL9ocwsIeCkDE30TN0t47VHg5bCt92jw0I80QBK tvwsfqwc9gftL/0A5rcPf7C/dewqgE4EvsEc3MrFWKsRgSDKA7OFSxKqTa/S7L9LD8QGZ J4NHPePbaNqSr4m0XYss/WHdarMux6iuJdVt/Gri/8KjAxV0YbjgcCcx/moYRrdifkw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794567100; h=DMARC-Filter:DKIM-Signature:Cc:References:X-Lms-Return-Path:To:From: Date:X-Original-From:Received:Subject:Mime-Version:Content-Type: Content-Transfer-Encoding:Message-Id:In-Reply-To:X-Mailer; bh=kN5lk7yu4kprln47vl3Hl9+FKo1eS5442VgRAIn6R3s=; b=fXCZM/o3dOFPHM/splBeT57711rnt1aAap0G8pmKJCmK1Tj2b+qqvc9euB0Zxv5AZ7XS zyVB3vA32ffrSOxub3CzwH+99ayzQdffgWbH3MaEmS1OJ+LHHeAGNHw5q05DvnykIsBhX gMl6mjIuqk62ITRsXFxaIsNlDCh7w5GPydkvqU19I6Bx8fg7yNKbebX6GNZSOjyLVtk29 m4avHSJdQhuTfWEibUIMifEwyNl2Oj86dBXIuG71bJMluDkVW61KXMDcV1sluL514MreX 9j2K7/XsV351XuE9OLTn9etp5h5YiEU5OsVIREi5Pq5+5q8exsrP8L6KfmllKqkwUrQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=oss.cipunited.com; spf=pass smtp.mailfrom=oss.cipunited.com; dkim=pass header.d=oss.cipunited.com header.i=@oss.cipunited.com header.a=rsa-sha256 header.s=feishu2303200042 header.b=SCimQal3; arc=none smtp.remote-ip=209.127.231.18 Received: from va-2-18.ptr.blmpb.com (va-2-18.ptr.blmpb.com [209.127.231.18]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00443606B25A for ; Fri, 13 Nov 2026 10:51:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 00443606B25A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.cipunited.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.cipunited.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oss.cipunited.com header.i=@oss.cipunited.com header.a=rsa-sha256 header.s=feishu2303200042 header.b=SCimQal3 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=feishu2303200042; d=oss.cipunited.com; t=1794567094; h=from:subject:mime-version:from:date:message-id:subject:to:cc: reply-to:content-type:mime-version:in-reply-to:message-id; bh=kN5lk7yu4kprln47vl3Hl9+FKo1eS5442VgRAIn6R3s=; b=SCimQal3/0i8vvlmlRafygqO/r0nq0tjN9oAG6DfCcDyhG4ShOV6tYMo7XHGUatz9HXhpM jYk9g9j2Iuezo9oUgY8Bf327L7eDnuD/kzu9R2s0+NXNNBcbEJPW3uHPrROytav9AGKZOn ODGp76RV//72muoDvBv6j6AUndryOYvH02EBhexqFE42/R2S1JLn7I1iCJnXynlj2PWdGT 0V4e8i0iI1ht9mofuQhNFcXClqNo/uwuT4GJgoAfKnLX1SMYkDHXrFsLAYl0qjcQkC3Zbe r+SpB25Zw/gTir5tpI9IOgXD/OrtDX0mHjQX9t4nCYIWB2ZiTKIudiBLVctC2Q== Cc: "Rong Zhang" , "Yao Zi" , "Icenowy Zheng" , "Jiaxun Yang" , , , , , "Rong Zhang" , "Conor Dooley" References: <20261113-mips-ls7a-wdt-v2-0-e8abd6b2f77c@oss.cipunited.com> X-Lms-Return-Path: To: "Keguang Zhang" , "Wim Van Sebroeck" , "Guenter Roeck" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Thomas Bogendoerfer" From: "Rong Zhang" Date: Fri, 13 Nov 2026 18:51:13 +0800 X-Original-From: Rong Zhang Received: from [127.0.1.1] ([171.15.157.139]) by smtp.feishu.cn with ESMTPS; Fri, 13 Nov 2026 18:51:31 +0800 Subject: [PATCH v2 6/8] MIPS: Loongson64: dts: ls7a-pch: Bind UART nodes to miscellaneous clock X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Message-Id: <20261113-mips-ls7a-wdt-v2-6-e8abd6b2f77c@oss.cipunited.com> In-Reply-To: <20261113-mips-ls7a-wdt-v2-0-e8abd6b2f77c@oss.cipunited.com> X-Mailer: b4 0.17-dev-ce4c1 The Loongson-7A's UART controllers are driven by an internal 50MHz clock source called miscellaneous clock. The clock is nonconfigurable for board manufacturer and software. Therefore, the LS7A UART nodes don't need to be fixed up by lefi_fixup_fdt_serial(), and can safely use clocks nodes rather than clock-frequency ones. Suggested-by: Conor Dooley Link: https://msgid.link/20261111-oboe-shack-11c3e3ce0830@spud/ Signed-off-by: Rong Zhang --- arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi index 2ef1ad10a8ec..7ba7bbb9c013 100644 --- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi +++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi @@ -39,7 +39,7 @@ lpc: interrupt-controller@10002000 { ls7a_uart0: serial@10080000 { compatible = "ns16550a"; reg = <0x0 0x10080000 0x0 0x100>; - clock-frequency = <50000000>; + clocks = <&pch_misc_clk>; interrupt-parent = <&pic>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; no-loopback-test; @@ -49,7 +49,7 @@ ls7a_uart1: serial@10080100 { status = "disabled"; compatible = "ns16550a"; reg = <0x0 0x10080100 0x0 0x100>; - clock-frequency = <50000000>; + clocks = <&pch_misc_clk>; interrupt-parent = <&pic>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; no-loopback-test; @@ -59,7 +59,7 @@ ls7a_uart2: serial@10080200 { status = "disabled"; compatible = "ns16550a"; reg = <0x0 0x10080200 0x0 0x100>; - clock-frequency = <50000000>; + clocks = <&pch_misc_clk>; interrupt-parent = <&pic>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; no-loopback-test; @@ -69,7 +69,7 @@ ls7a_uart3: serial@10080300 { status = "disabled"; compatible = "ns16550a"; reg = <0x0 0x10080300 0x0 0x100>; - clock-frequency = <50000000>; + clocks = <&pch_misc_clk>; interrupt-parent = <&pic>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; no-loopback-test; -- 2.55.0