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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE4CCCDB482 for ; Wed, 18 Oct 2023 14:13:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345058AbjJRONQ (ORCPT ); Wed, 18 Oct 2023 10:13:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344931AbjJROMc (ORCPT ); Wed, 18 Oct 2023 10:12:32 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7405411B; Wed, 18 Oct 2023 07:12:30 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49FE9C433C8; Wed, 18 Oct 2023 14:12:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697638350; bh=SZ/JnfUGBRzyGmQDn/UNvhmvUCg0MK1vMdDoCyu18EY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DxHnMuKu71DLxgEVB0OcKencH2yuelWkCuwapmF9IStb56KAIhg2EPS4bTYmtMyDa hGxG6+vm4JfiC2k0XAc2u72Fh5ffz2Sj8myjMTekWFGI8yVe9Fx1gKtj8HFOkS6UMA 5fK6fleBHXWb87c16pokx5HB1qLQlnjsvZMdS7UvALLDGisiKUtvO87hxBBZBpWlc2 h2lbjOQI/1Xo/i6kxTWU3LE/fNdmpX0JjggRgikTKjsk9Jt7DOJGOouMuLyciQ8c1e UN3Nh/O1s7jbupV3ki83STVmvHcBux+ouiuNX7xnMV8JBB+7go97PUE28OHqgOT+P/ JyxQalPd8+thQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Haibo Chen , Marc Kleine-Budde , Sasha Levin , robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, peng.fan@nxp.com, alexander.stein@ew.tq-group.com, ping.bai@nxp.com, xiaoning.wang@nxp.com, sherry.sun@nxp.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 6.5 15/31] arm64: dts: imx93: add the Flex-CAN stop mode by GPR Date: Wed, 18 Oct 2023 10:11:32 -0400 Message-Id: <20231018141151.1334501-15-sashal@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231018141151.1334501-1-sashal@kernel.org> References: <20231018141151.1334501-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.5.7 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Haibo Chen [ Upstream commit 23ed2be5404da7cee6a519fa69bf22d0f69da4e4 ] imx93 A0 chip use the internal q-channel handshake signal in LPCG and CCM to automatically handle the Flex-CAN stop mode. But this method meet issue when do the system PM stress test. IC can't fix it easily. So in the new imx93 A1 chip, IC drop this method, and involve back the old way，use the GPR method to trigger the Flex-CAN stop mode signal. Now NXP claim to drop imx93 A0, and only support imx93 A1. So here add the stop mode through GPR. This patch also fix a typo for aonmix_ns_gpr. Signed-off-by: Haibo Chen Link: https://lore.kernel.org/all/20230726112458.3524165-1-haibo.chen@nxp.com Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/freescale/imx93.dtsi | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi index 1d8dd14b65cfa..2a9b89bf52698 100644 --- a/arch/arm64/boot/dts/freescale/imx93.dtsi +++ b/arch/arm64/boot/dts/freescale/imx93.dtsi @@ -146,7 +146,7 @@ aips1: bus@44000000 { #size-cells = <1>; ranges; - anomix_ns_gpr: syscon@44210000 { + aonmix_ns_gpr: syscon@44210000 { compatible = "fsl,imx93-aonmix-ns-syscfg", "syscon"; reg = <0x44210000 0x1000>; }; @@ -280,6 +280,7 @@ flexcan1: can@443a0000 { assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>; assigned-clock-rates = <40000000>; fsl,clk-source = /bits/ 8 <0>; + fsl,stop-mode = <&aonmix_ns_gpr 0x14 0>; status = "disabled"; }; @@ -532,6 +533,7 @@ flexcan2: can@425b0000 { assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>; assigned-clock-rates = <40000000>; fsl,clk-source = /bits/ 8 <0>; + fsl,stop-mode = <&wakeupmix_gpr 0x0c 2>; status = "disabled"; }; -- 2.40.1