From nobody Fri Sep 20 20:35:20 2024 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 178DDC77B7A for ; Wed, 7 Jun 2023 07:23:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239106AbjFGHXI (ORCPT ); Wed, 7 Jun 2023 03:23:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238973AbjFGHWg (ORCPT ); Wed, 7 Jun 2023 03:22:36 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FFA9199A; Wed, 7 Jun 2023 00:22:34 -0700 (PDT) X-UUID: 0d4f0f96050411ee9cb5633481061a41-20230607 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=PR4J+o7n3cvUuPH/ravIyyLbKKLqOctALeoFsXobH1E=; b=bsiT/20lt5guFF8d50Ib/+rZyrWRIfZJKwLHjr0mzNu5NLM/qV1M/KJTet5YrvsUBc2d0Xw33BwyACac1efAH63ETWISR2Jat2yki74od5j0+Y9joo324VBIqRzVl/8iAIpkC8hdSKclwxyP0tT+Yq2HTbRupsHqcZoIMHCEudw=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.25,REQID:7432c92e-4abe-4f98-adf8-eff4881fea48,IP:0,U RL:0,TC:0,Content:0,EDM:-30,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-30 X-CID-META: VersionHash:d5b0ae3,CLOUDID:1c93a53d-de1e-4348-bc35-c96f92f1dcbb,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:2,IP:nil,UR L:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 0d4f0f96050411ee9cb5633481061a41-20230607 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1555899211; Wed, 07 Jun 2023 15:22:25 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 7 Jun 2023 15:22:24 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 7 Jun 2023 15:22:24 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Tinghan Shen CC: , , , , , Subject: [PATCH v13 09/11] remoteproc: mediatek: Handle MT8195 SCP core 1 watchdog timeout Date: Wed, 7 Jun 2023 15:22:20 +0800 Message-ID: <20230607072222.8628-10-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230607072222.8628-1-tinghan.shen@mediatek.com> References: <20230607072222.8628-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The MT8195 SCP core 1 watchdog timeout needs to be handled in the SCP core 0 IRQ handler because the MT8195 SCP core 1 watchdog timeout IRQ is wired on the same IRQ entry for core 0 watchdog timeout. MT8195 SCP has a watchdog status register to identify the watchdog timeout source when IRQ triggered. Signed-off-by: Tinghan Shen Reviewed-by: AngeloGioacchino Del Regno --- drivers/remoteproc/mtk_common.h | 5 +++++ drivers/remoteproc/mtk_scp.c | 25 ++++++++++++++++++++++++- 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_commo= n.h index 2806bd71ef94..1590175ea688 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -55,6 +55,10 @@ #define MT8192_CORE0_WDT_IRQ 0x10030 #define MT8192_CORE0_WDT_CFG 0x10034 =20 +#define MT8195_SYS_STATUS 0x4004 +#define MT8195_CORE0_WDT BIT(16) +#define MT8195_CORE1_WDT BIT(17) + #define MT8195_L1TCM_SRAM_PDN_RESERVED_RSI_BITS GENMASK(7, 4) =20 #define MT8195_CPU1_SRAM_PD 0x1084 @@ -63,6 +67,7 @@ #define MT8195_CORE1_SW_RSTN_CLR 0x20000 #define MT8195_CORE1_SW_RSTN_SET 0x20004 #define MT8195_CORE1_MEM_ATT_PREDEF 0x20008 +#define MT8195_CORE1_WDT_IRQ 0x20030 #define MT8195_CORE1_WDT_CFG 0x20034 =20 #define MT8195_SEC_CTRL 0x85000 diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 82bba6146d23..66105ed2f3db 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -243,6 +243,29 @@ static void mt8192_scp_irq_handler(struct mtk_scp *scp) } } =20 +static void mt8195_scp_irq_handler(struct mtk_scp *scp) +{ + u32 scp_to_host; + + scp_to_host =3D readl(scp->reg_base + MT8192_SCP2APMCU_IPC_SET); + + if (scp_to_host & MT8192_SCP_IPC_INT_BIT) { + scp_ipi_handler(scp); + } else { + u32 reason =3D readl(scp->reg_base + MT8195_SYS_STATUS); + + if (reason & MT8195_CORE0_WDT) + writel(1, scp->reg_base + MT8192_CORE0_WDT_IRQ); + + if (reason & MT8195_CORE1_WDT) + writel(1, scp->reg_base + MT8195_CORE1_WDT_IRQ); + + scp_wdt_handler(scp, reason); + } + + writel(scp_to_host, scp->reg_base + MT8192_SCP2APMCU_IPC_CLR); +} + static void mt8195_scp_c1_irq_handler(struct mtk_scp *scp) { u32 scp_to_host; @@ -1273,7 +1296,7 @@ static const struct mtk_scp_of_data mt8192_of_data = =3D { static const struct mtk_scp_of_data mt8195_of_data =3D { .scp_clk_get =3D mt8195_scp_clk_get, .scp_before_load =3D mt8195_scp_before_load, - .scp_irq_handler =3D mt8192_scp_irq_handler, + .scp_irq_handler =3D mt8195_scp_irq_handler, .scp_reset_assert =3D mt8192_scp_reset_assert, .scp_reset_deassert =3D mt8192_scp_reset_deassert, .scp_stop =3D mt8195_scp_stop, --=20 2.18.0