From patchwork Mon Feb 28 04:55:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hari Nagalla X-Patchwork-Id: 1598492 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=LebJoVpp; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4K6SlJ4GSFz9sGS for ; Mon, 28 Feb 2022 15:56:28 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 0439E83C29; Mon, 28 Feb 2022 05:56:16 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="LebJoVpp"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id DD74683A29; Mon, 28 Feb 2022 05:56:00 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.2 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 168DD80F4C for ; Mon, 28 Feb 2022 05:55:56 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=hnagalla@ti.com Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 21S4ttG1061180 for ; Sun, 27 Feb 2022 22:55:55 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1646024155; bh=KFjpp5m7ME2WYxcDScV9mAXRAujBU+fgLriByddDmRE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=LebJoVppJst/NeSjRa7g52Hnba+P539RFjTKONVBz63ymqxFhFxxnl440DxsDXhiB rULEppXmPU//A9EOso6fvmVAeuQOvAaWyw2brFCM6au2u0S+51KfqCvIJ9hQ5GQRUl 7y7pRPu5My44kwSMvkzNjyVUDMRl02AWad0En6aU= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 21S4ttr7123267 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Sun, 27 Feb 2022 22:55:55 -0600 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Sun, 27 Feb 2022 22:55:54 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Sun, 27 Feb 2022 22:55:54 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 21S4ts3w047634; Sun, 27 Feb 2022 22:55:54 -0600 From: Hari Nagalla To: CC: Subject: [PATCH v2 1/4] misc: k3_esm: Add functionality to set and route error events within K3SoC Date: Sun, 27 Feb 2022 22:55:51 -0600 Message-ID: <20220228045554.3048-2-hnagalla@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220228045554.3048-1-hnagalla@ti.com> References: <20220228045554.3048-1-hnagalla@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean Add functionality to enable, set priority to the input events and to route to MCU ESM. On AM64x/AM62x devices, it is possible to route Main ESM0 error events to MCU ESM. When these error events are routed to MCU ESM high output, it can trigger the reset logic to reset the device, when CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RESET_EN_Z is set to '0'. K3 based J7 devices (ex: J721e) also have ESM modules, and the changes to the driver does not impact those devices. Signed-off-by: Hari Nagalla Reviewed-by: Christian Gmeiner --- drivers/misc/k3_esm.c | 53 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 3 deletions(-) diff --git a/drivers/misc/k3_esm.c b/drivers/misc/k3_esm.c index cc2a23dd66..41faeb3d85 100644 --- a/drivers/misc/k3_esm.c +++ b/drivers/misc/k3_esm.c @@ -16,17 +16,57 @@ #define ESM_SFT_RST 0x0c #define ESM_SFT_RST_KEY 0x0f +#define ESM_EN 0x08 +#define ESM_EN_KEY 0x0f #define ESM_STS(i) (0x404 + (i) / 32 * 0x20) +#define ESM_STS_MASK(i) (1 << ((i) % 32)) #define ESM_PIN_EN_SET_OFFSET(i) (0x414 + (i) / 32 * 0x20) -#define ESM_PIN_MASK(i) BIT((i) & 0x1f) +#define ESM_PIN_MASK(i) (1 << ((i) % 32)) +#define ESM_INTR_EN_SET_OFFSET(i) (0x408 + (i) / 32 * 0x20) +#define ESM_INTR_MASK(i) (1 << ((i) % 32)) +#define ESM_INTR_PRIO_SET_OFFSET(i) (0x410 + (i) / 32 * 0x20) +#define ESM_INTR_PRIO_MASK(i) (1 << ((i) % 32)) static void esm_pin_enable(void __iomem *base, int pin) { + u32 value; + + value = readl(base + ESM_PIN_EN_SET_OFFSET(pin)); + value |= ESM_PIN_MASK(pin); /* Enable event */ - writel(ESM_PIN_MASK(pin), base + ESM_PIN_EN_SET_OFFSET(pin)); + writel(value, base + ESM_PIN_EN_SET_OFFSET(pin)); +} + +static void esm_intr_enable(void __iomem *base, int pin) +{ + u32 value; + + value = readl(base + ESM_INTR_EN_SET_OFFSET(pin)); + value |= ESM_INTR_MASK(pin); + /* Enable Interrupt event */ + writel(value, base + ESM_INTR_EN_SET_OFFSET(pin)); +} + +static void esm_intr_prio_set(void __iomem *base, int pin) +{ + u32 value; + + value = readl(base + ESM_INTR_PRIO_SET_OFFSET(pin)); + value |= ESM_INTR_PRIO_MASK(pin); + /* Set to priority */ + writel(value, base + ESM_INTR_PRIO_SET_OFFSET(pin)); } +static void esm_clear_raw_status(void __iomem *base, int pin) +{ + u32 value; + + value = readl(base + ESM_STS(pin)); + value |= ESM_STS_MASK(pin); + /* Clear Event status */ + writel(value, base + ESM_STS(pin)); +} /** * k3_esm_probe: configures ESM based on DT data * @@ -67,8 +107,15 @@ static int k3_esm_probe(struct udevice *dev) /* Clear any pending events */ writel(ESM_SFT_RST_KEY, base + ESM_SFT_RST); - for (i = 0; i < num_pins; i++) + for (i = 0; i < num_pins; i++) { + esm_intr_prio_set(base, pins[i]); + esm_clear_raw_status(base, pins[i]); esm_pin_enable(base, pins[i]); + esm_intr_enable(base, pins[i]); + } + + /* Enable ESM */ + writel(ESM_EN_KEY, base + ESM_EN); free_pins: kfree(pins);