From patchwork Wed Nov 29 12:59:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472829 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 8C4B0C4167B for ; Wed, 29 Nov 2023 13:00:32 +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:References:In-Reply-To: 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: List-Owner; bh=WiqiqQuOoNYSlj4J87GD3uwMstf+kdAbEO3laT3e4eY=; b=Ync84pvqwS3Z5D jCqb0gs4Zbx0rG+FYuBCZv8fYKebVzTkFWJKCGFskkK2EtUz9ElUjJrA1pgYAS8VKvrGbuxhGfvG6 llhKKMPgXqldVP8CA4g1bA5nOeu8oPCrblsnOc8nZofVVi5jHynsyMQ/5DLhwja52MKv0NKr79NBE OIkP1QArivTuLHa4BQDWvRHeMZt3UaIA/SN0TbVtftYe+7wPFUOmoD1LUWHBIRWmVjJJsHnuTyIIQ ney3vVWODwfDbh1W2ZFSsVreEL/XA9JfCpuO8+V1EC6C98S4R0m9PkGRkA32BpLx0totY1z4ewKQA XKXOI18Q4fSHmBqfSBtg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KAe-008OzK-2L; Wed, 29 Nov 2023 13:00:04 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KAb-008OyG-0o for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:00:03 +0000 Received: from pps.filterd (m0369458.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 3ATAIMa5005577; Wed, 29 Nov 2023 13:59:54 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=JtOvQS+6evVSFOg4x1qpS4jVWP7j9KTB9w21qfsiDm4=; b=TU 4Mz5M/sTLIEttQjLy5O0ouAEcuT+oCpyMws6WaQ0VpNKhdETN1RL1awOVG/LXcl7 3NJQ/eFMe0BuSfBgxG9FYAGBvhqy1pHjHrfACWaHBLjXBRbTq/JJBpXe5k/SCWHc cpdHPtzDSSyLNIWCLSUm3iYxg0NDjBxKFl8Hsseqeqh/jLSMfmM2XPUDMtcB3vbi MCLOrROa+OW006PRdHUYZb20rZJFsueeG3dV+kPHqZOeAxY8vQGns0NwOb2hgDu+ N40J2y9JisM+4AKLs56ydAmjhYH2T7Dz/tKaF24RWrITldpf1mC1H9zyoM+AQcNK yEmkZ0uj9+Cev7A8WpPw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3unxcj22e2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 13:59:54 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6AB3A10002A; Wed, 29 Nov 2023 13:59:53 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id E7C6221BF62; Wed, 29 Nov 2023 13:59:53 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 13:59:53 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 1/7] i2c: stm32f7: perform most of irq job in threaded handler Date: Wed, 29 Nov 2023 13:59:10 +0100 Message-ID: <20231129125920.1702497-2-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050001_611436_35CDCD24 X-CRM114-Status: GOOD ( 22.36 ) 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 The irq handling is currently split between the irq handler and the threaded irq handler. Some of the handling (such as dma related stuffs) done within the irq handler might sleep or take some time leading to issues if the kernel is built with realtime constraints. In order to fix that, perform an overall rework to perform most of the job within the threaded handler and only keep fifo access in the non threaded handler. Signed-off-by: Alain Volmat --- drivers/i2c/busses/i2c-stm32f7.c | 126 ++++++++++++++----------------- 1 file changed, 56 insertions(+), 70 deletions(-) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index 983509936727..34dcc370e615 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1497,17 +1497,11 @@ static irqreturn_t stm32f7_i2c_slave_isr_event(struct stm32f7_i2c_dev *i2c_dev) static irqreturn_t stm32f7_i2c_isr_event(int irq, void *data) { struct stm32f7_i2c_dev *i2c_dev = data; - struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; - struct stm32_i2c_dma *dma = i2c_dev->dma; - void __iomem *base = i2c_dev->base; - u32 status, mask; - int ret = IRQ_HANDLED; + u32 status; - /* Check if the interrupt if for a slave device */ - if (!i2c_dev->master_mode) { - ret = stm32f7_i2c_slave_isr_event(i2c_dev); - return ret; - } + /* Check if the interrupt is for a slave device */ + if (!i2c_dev->master_mode) + return IRQ_WAKE_THREAD; status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); @@ -1519,6 +1513,29 @@ static irqreturn_t stm32f7_i2c_isr_event(int irq, void *data) if (status & STM32F7_I2C_ISR_RXNE) stm32f7_i2c_read_rx_data(i2c_dev); + /* Wake up the thread if other flags are raised */ + if (status & + (STM32F7_I2C_ISR_NACKF | STM32F7_I2C_ISR_STOPF | + STM32F7_I2C_ISR_TC | STM32F7_I2C_ISR_TCR)) + return IRQ_WAKE_THREAD; + + return IRQ_HANDLED; +} + +static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) +{ + struct stm32f7_i2c_dev *i2c_dev = data; + struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; + struct stm32_i2c_dma *dma = i2c_dev->dma; + void __iomem *base = i2c_dev->base; + u32 status, mask; + int ret; + + if (!i2c_dev->master_mode) + return stm32f7_i2c_slave_isr_event(i2c_dev); + + status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); + /* NACK received */ if (status & STM32F7_I2C_ISR_NACKF) { dev_dbg(i2c_dev->dev, "<%s>: Receive NACK (addr %x)\n", @@ -1531,33 +1548,28 @@ static irqreturn_t stm32f7_i2c_isr_event(int irq, void *data) f7_msg->result = -ENXIO; } - /* STOP detection flag */ - if (status & STM32F7_I2C_ISR_STOPF) { - /* Disable interrupts */ - if (stm32f7_i2c_is_slave_registered(i2c_dev)) - mask = STM32F7_I2C_XFER_IRQ_MASK; + if (status & STM32F7_I2C_ISR_TCR) { + if (f7_msg->smbus) + stm32f7_i2c_smbus_reload(i2c_dev); else - mask = STM32F7_I2C_ALL_IRQ_MASK; - stm32f7_i2c_disable_irq(i2c_dev, mask); - - /* Clear STOP flag */ - writel_relaxed(STM32F7_I2C_ICR_STOPCF, base + STM32F7_I2C_ICR); - - if (i2c_dev->use_dma && !f7_msg->result) { - ret = IRQ_WAKE_THREAD; - } else { - i2c_dev->master_mode = false; - complete(&i2c_dev->complete); - } + stm32f7_i2c_reload(i2c_dev); } /* Transfer complete */ if (status & STM32F7_I2C_ISR_TC) { + /* Wait for dma transfer completion before sending next message */ + if (i2c_dev->use_dma && !f7_msg->result) { + ret = wait_for_completion_timeout(&i2c_dev->dma->dma_complete, HZ); + if (!ret) { + dev_dbg(i2c_dev->dev, "<%s>: Timed out\n", __func__); + stm32f7_i2c_disable_dma_req(i2c_dev); + dmaengine_terminate_async(dma->chan_using); + f7_msg->result = -ETIMEDOUT; + } + } if (f7_msg->stop) { mask = STM32F7_I2C_CR2_STOP; stm32f7_i2c_set_bits(base + STM32F7_I2C_CR2, mask); - } else if (i2c_dev->use_dma && !f7_msg->result) { - ret = IRQ_WAKE_THREAD; } else if (f7_msg->smbus) { stm32f7_i2c_smbus_rep_start(i2c_dev); } else { @@ -1567,47 +1579,18 @@ static irqreturn_t stm32f7_i2c_isr_event(int irq, void *data) } } - if (status & STM32F7_I2C_ISR_TCR) { - if (f7_msg->smbus) - stm32f7_i2c_smbus_reload(i2c_dev); + /* STOP detection flag */ + if (status & STM32F7_I2C_ISR_STOPF) { + /* Disable interrupts */ + if (stm32f7_i2c_is_slave_registered(i2c_dev)) + mask = STM32F7_I2C_XFER_IRQ_MASK; else - stm32f7_i2c_reload(i2c_dev); - } - - return ret; -} - -static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) -{ - struct stm32f7_i2c_dev *i2c_dev = data; - struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; - struct stm32_i2c_dma *dma = i2c_dev->dma; - u32 status; - int ret; - - /* - * Wait for dma transfer completion before sending next message or - * notity the end of xfer to the client - */ - ret = wait_for_completion_timeout(&i2c_dev->dma->dma_complete, HZ); - if (!ret) { - dev_dbg(i2c_dev->dev, "<%s>: Timed out\n", __func__); - stm32f7_i2c_disable_dma_req(i2c_dev); - dmaengine_terminate_async(dma->chan_using); - f7_msg->result = -ETIMEDOUT; - } + mask = STM32F7_I2C_ALL_IRQ_MASK; + stm32f7_i2c_disable_irq(i2c_dev, mask); - status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); + /* Clear STOP flag */ + writel_relaxed(STM32F7_I2C_ICR_STOPCF, base + STM32F7_I2C_ICR); - if (status & STM32F7_I2C_ISR_TC) { - if (f7_msg->smbus) { - stm32f7_i2c_smbus_rep_start(i2c_dev); - } else { - i2c_dev->msg_id++; - i2c_dev->msg++; - stm32f7_i2c_xfer_msg(i2c_dev, i2c_dev->msg); - } - } else { i2c_dev->master_mode = false; complete(&i2c_dev->complete); } @@ -1615,7 +1598,7 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) return IRQ_HANDLED; } -static irqreturn_t stm32f7_i2c_isr_error(int irq, void *data) +static irqreturn_t stm32f7_i2c_isr_error_thread(int irq, void *data) { struct stm32f7_i2c_dev *i2c_dev = data; struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; @@ -2205,8 +2188,11 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) return ret; } - ret = devm_request_irq(&pdev->dev, irq_error, stm32f7_i2c_isr_error, 0, - pdev->name, i2c_dev); + ret = devm_request_threaded_irq(&pdev->dev, irq_error, + NULL, + stm32f7_i2c_isr_error_thread, + IRQF_ONESHOT, + pdev->name, i2c_dev); if (ret) { dev_err(&pdev->dev, "Failed to request irq error %i\n", irq_error); From patchwork Wed Nov 29 12:59:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472830 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 51943C4167B for ; Wed, 29 Nov 2023 13:00:54 +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:References:In-Reply-To: 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: List-Owner; bh=9DLD4gtUEUcKrjiPKy4ZMV3XsbQYDJnhEkUpbsHVYcg=; b=BC6q3yiO9RYHho HI2UqoRbgqZQ3zBXxa1aQw6N6hBYXbq2OI+/+2uBqIT7/PflulqT3+iXdotq5iDay/lbF6BluSRSR XeDZgKUKmznNDnDlqkg7wlq3HgDuZ3xYGtNYhmsbggCMJJ+XjB7/YWJCNU/eFzn8x3/IZ0OO4iUlb y0SOW75gNMGdbUjqYrU6iQ8jyndNviXU7vns+w3wXCbu5P6Q40WnTmARH+MehNArA34wuXrLFMmyE 6si02EK6iYvrQGsrClr6cZl03/XeVdMhu6+ACdnXONWCqsSy0FAG3QhoPFo9sUuno5F4LWp8P2q8z DTxJ8/+/phabnXkBuQlw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KB0-008P3w-1c; Wed, 29 Nov 2023 13:00:26 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KAx-008P1q-2U for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:00:25 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3ATB3RWm005228; Wed, 29 Nov 2023 14:00:10 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=5dNPirvASkdcY7pOymXDVq0mD0jqbY8yDoyX0nISUyg=; b=b1 628BF7IEJfaAVkQujS5HMWpS+TQdkXb0I9SUEuCz+1YXiYjU7Ka89IP53HP0bfHn 2AJR/4i56lsoHFnRXOWBVVNnAVjpcdCcEbT373LOfE779Kkkb5/2p7fMaHRooFD1 1c5RPhgksPvzRw2ThoJpQsHTfPUN30g0o0IjvDr9hBMoGCJZryUIElKFEyw9j4G8 WlbSeunqoM/3yMAAz5Hs1jSDJAxO8Do7Ew6WJirzwuaFUFNoOVO9+fa5LE+mu7pz DLhgB8eY8qZh9BwFRQr05B6JM3LtkU/r97BngEJhwJUV/4OKpY1zGXHRUiSeEdo9 nj/S4Mwl1C61pcVmx4Dg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3unffdw1y7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:00:10 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 573CE10005C; Wed, 29 Nov 2023 14:00:08 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id D6AC721BF5E; Wed, 29 Nov 2023 14:00:08 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:00:08 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 2/7] i2c: stm32f7: simplify status messages in case of errors Date: Wed, 29 Nov 2023 13:59:11 +0100 Message-ID: <20231129125920.1702497-3-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050024_084307_3E3B96DC X-CRM114-Status: GOOD ( 12.79 ) 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 Avoid usage of __func__ when reporting an error message since dev_err/dev_dbg are already providing enough details to identify the source of the message. Signed-off-by: Alain Volmat --- drivers/i2c/busses/i2c-stm32f7.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index 34dcc370e615..2a011deec3c5 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1602,6 +1602,7 @@ static irqreturn_t stm32f7_i2c_isr_error_thread(int irq, void *data) { struct stm32f7_i2c_dev *i2c_dev = data; struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; + u16 addr = f7_msg->addr; void __iomem *base = i2c_dev->base; struct device *dev = i2c_dev->dev; struct stm32_i2c_dma *dma = i2c_dev->dma; @@ -1611,8 +1612,7 @@ static irqreturn_t stm32f7_i2c_isr_error_thread(int irq, void *data) /* Bus error */ if (status & STM32F7_I2C_ISR_BERR) { - dev_err(dev, "<%s>: Bus error accessing addr 0x%x\n", - __func__, f7_msg->addr); + dev_err(dev, "Bus error accessing addr 0x%x\n", addr); writel_relaxed(STM32F7_I2C_ICR_BERRCF, base + STM32F7_I2C_ICR); stm32f7_i2c_release_bus(&i2c_dev->adap); f7_msg->result = -EIO; @@ -1620,21 +1620,19 @@ static irqreturn_t stm32f7_i2c_isr_error_thread(int irq, void *data) /* Arbitration loss */ if (status & STM32F7_I2C_ISR_ARLO) { - dev_dbg(dev, "<%s>: Arbitration loss accessing addr 0x%x\n", - __func__, f7_msg->addr); + dev_dbg(dev, "Arbitration loss accessing addr 0x%x\n", addr); writel_relaxed(STM32F7_I2C_ICR_ARLOCF, base + STM32F7_I2C_ICR); f7_msg->result = -EAGAIN; } if (status & STM32F7_I2C_ISR_PECERR) { - dev_err(dev, "<%s>: PEC error in reception accessing addr 0x%x\n", - __func__, f7_msg->addr); + dev_err(dev, "PEC error in reception accessing addr 0x%x\n", addr); writel_relaxed(STM32F7_I2C_ICR_PECCF, base + STM32F7_I2C_ICR); f7_msg->result = -EINVAL; } if (status & STM32F7_I2C_ISR_ALERT) { - dev_dbg(dev, "<%s>: SMBus alert received\n", __func__); + dev_dbg(dev, "SMBus alert received\n"); writel_relaxed(STM32F7_I2C_ICR_ALERTCF, base + STM32F7_I2C_ICR); i2c_handle_smbus_alert(i2c_dev->alert->ara); return IRQ_HANDLED; From patchwork Wed Nov 29 12:59:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472831 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 D8A3EC07CB1 for ; Wed, 29 Nov 2023 13:02:37 +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:References:In-Reply-To: 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: List-Owner; bh=O+sf2h0WGPpXsiA5O6LXe+0wVvcdd/BKC6OsSH3M2UE=; b=cX6YGGwNrPDeee 2CpHcjj3q8WOXCNL9+49n+oqQXscvTpqYhLc9TC5Lrcu1lDqXwa8vTtJPE5mDCQn2zw+I87+OXTXQ 9NT0FbUr16YQKtcULFUQuFvFcFca9rho7udhFHEAcBluGjoI/SXGnnXJ+iPfE/Ggsf8/rgie6UQOy 3zWE+NhaWZttK5CuLjHvANU/f3sewUIt8o9gBAXAkBxBnTm0VU9U6iB+HeJ7oPIJ2Oya1tJJbaQk3 uTACJcUoDnI/oF/EtIAbY0enFkqrUMGUIfDyYcN+D8B469AYf88sLRWOGIuMTvfMEtoQuMCkdvh3v O978mI0q6Fqyodp/rcaA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KCd-008PK0-1F; Wed, 29 Nov 2023 13:02:07 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KCb-008PJD-07 for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:02:06 +0000 Received: from pps.filterd (m0369457.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 3ATBWfMR006277; Wed, 29 Nov 2023 14:01:57 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=B1gllxM07cZkFcyt3hFnW0r2ti4poMYoZdWOoNhH4I4=; b=Uq 8tRhou14NhVqmvwP6VIocCm4i9lOH39XG6hNo5bqtKLp3UmDu1NWerj56pTypBb1 vHWVfz54pz9CZ4dP2DGI7d/T8R7F4pq09a5HSGsHnlT5QBuNQl0xR5t2Ndau8RL6 OxphFSGHIugVQPHxVcPilIclyE7k/qfIjgEuTpLbDIjLgI3AibHKnUeRXQhbf3fB KZFTM2v65LXowxYQMJwfkITBvy2uEjX+p1Jtx095EgIL5Vl+rkm5WYdmWcCcWFub 32qxb42aygA6TU3gV/MCi3trFjklRYr2GR+ne66LF8PR88YBurNY+LE22QHAcNXy NVGKmqF9YJiZrIJrO2pw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3unffb522u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:01:57 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id D0C7110002A; Wed, 29 Nov 2023 14:01:55 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 5DF0221BF7C; Wed, 29 Nov 2023 14:01:56 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:01:56 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 3/7] dt-bindings: i2c: document st,stm32mp25-i2c compatible Date: Wed, 29 Nov 2023 13:59:12 +0100 Message-ID: <20231129125920.1702497-4-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050205_378275_4A3821A3 X-CRM114-Status: GOOD ( 11.97 ) 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 Add a new compatible st,stm32mp25-i2c for the STM32MP25 series which has only one interrupt line for both events and errors and differs in term of handling of FastModePlus. Signed-off-by: Alain Volmat --- .../devicetree/bindings/i2c/st,stm32-i2c.yaml | 49 +++++++++++++++---- 1 file changed, 39 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml index 94b75d9f66cd..6a69bb6de23e 100644 --- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml @@ -19,6 +19,7 @@ allOf: - st,stm32f7-i2c - st,stm32mp13-i2c - st,stm32mp15-i2c + - st,stm32mp25-i2c then: properties: i2c-scl-rising-time-ns: @@ -41,6 +42,43 @@ allOf: clock-frequency: enum: [100000, 400000] + - if: + properties: + compatible: + contains: + enum: + - st,stm32f4-i2c + - st,stm32f7-i2c + - st,stm32mp13-i2c + - st,stm32mp15-i2c + then: + properties: + interrupts: + items: + - description: interrupt ID for I2C event + - description: interrupt ID for I2C error + + interrupt-names: + items: + - const: event + - const: error + + - if: + properties: + compatible: + contains: + enum: + - st,stm32mp25-i2c + then: + properties: + interrupts: + items: + - description: common interrupt for events and errors + + interrupt-names: + items: + - const: event + properties: compatible: enum: @@ -48,20 +86,11 @@ properties: - st,stm32f7-i2c - st,stm32mp13-i2c - st,stm32mp15-i2c + - st,stm32mp25-i2c reg: maxItems: 1 - interrupts: - items: - - description: interrupt ID for I2C event - - description: interrupt ID for I2C error - - interrupt-names: - items: - - const: event - - const: error - resets: maxItems: 1 From patchwork Wed Nov 29 12:59:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472835 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 BB886C4167B for ; Wed, 29 Nov 2023 13:04:08 +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:References:In-Reply-To: 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: List-Owner; bh=mOtp9+5CEvX8dnZ7DLJLV2LhtzZuzPZObUdtgHunzwc=; b=DhIGvwxL7Df+t1 Y+J6SsT2AHO4m51+6u41US5KxsbvLuCZBhbs2PjKZe8MbEZtUuqfFYQdV/oKAdYZthjiviW8huSae yGxZ9bPEJ9s2p2p53GzDjbtg2dGT19fwzXTBggVPGUi7oTr5xtfonrJ+kP3ixvubMtSG5anZW0g+f 7bspMs4SCMUCjl5nTi+95NpqL0cXf9F7iVkEeAtOyJNj1sK7p1qTjpvNOkub6u6s3VF/RzNjl05s+ 1ihY9K0z72zSrrRoyJOwXxmq2y4AUa5tY6MGSVSdUotAqi1fiMdaTrdsNxFREh7eEBzi3j0OjmCvh 4LiAGLo8chJQlQcpNOJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KE3-008PYl-2s; Wed, 29 Nov 2023 13:03:35 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KE0-008PXp-2J for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:03:35 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3ATAfCNM005262; Wed, 29 Nov 2023 14:03:24 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=kcWAD6p6nLn9tdVwgthyl5gWStDmmBJJiuG00dA3A7o=; b=BO er3JHdjgdQDp+oHGgJKNBxhU+V1rbtABBGSGavxLJjQ/z27xorezG0DFut5TND+o nIgzVvfoKdhHPMns+6Jx8R6BwnlyhbjLVHF5DDWgqghfychhsgS0l2HvY5rNTtns RlmSL7GMhKLAmlXpmlhGh9uxP2K82tcGHMr6lNS5MHWbUO4BlQKQwmFd69wHCDmb Hhxr5hb41KWqsJrJcVmevA9xQKPd3yjK95eZRtmlL6bk7z1BZcdhkkie3dcpL/MB dx3abAe/s7sfqSSjoQ828lS3nzs8T4VRhIC921LIcaRY+G/hQFUvcqsU4D6QbZes nlUzFz/zpjZY4DAnzQSg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3unffdw2kt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:03:24 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 1077310002A; Wed, 29 Nov 2023 14:03:23 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 9070021D385; Wed, 29 Nov 2023 14:03:23 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:03:23 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: Valentin Caron , , , , , Subject: [PATCH 4/7] i2c: stm32f7: add support for stm32mp25 soc Date: Wed, 29 Nov 2023 13:59:13 +0100 Message-ID: <20231129125920.1702497-5-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050333_031998_74271F79 X-CRM114-Status: GOOD ( 28.67 ) 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 The stm32mp25 has only a single interrupt line used for both events and errors. In order to cope with that, reorganise the error handling code so that it can be called either from the common handler (used in case of SoC having only a single IT line) and the error handler for others. The CR1 register also embeds a new FMP bit, necessary when running at Fast Mode Plus frequency. This bit should be used instead of the SYSCFG bit used on other platforms. Add a new compatible to distinguish between the SoCs and two boolean within the setup structure in order to know if the platform has a single/multiple IT lines and if the FMP bit within CR1 is available or not. Signed-off-by: Alain Volmat Signed-off-by: Valentin Caron --- drivers/i2c/busses/i2c-stm32f7.c | 230 ++++++++++++++++++------------- 1 file changed, 134 insertions(+), 96 deletions(-) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index 2a011deec3c5..9186fab3a063 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -50,6 +50,7 @@ #define STM32F7_I2C_TXDR 0x28 /* STM32F7 I2C control 1 */ +#define STM32_I2C_CR1_FMP BIT(24) #define STM32F7_I2C_CR1_PECEN BIT(23) #define STM32F7_I2C_CR1_ALERTEN BIT(22) #define STM32F7_I2C_CR1_SMBHEN BIT(20) @@ -226,6 +227,8 @@ struct stm32f7_i2c_spec { * @rise_time: Rise time (ns) * @fall_time: Fall time (ns) * @fmp_clr_offset: Fast Mode Plus clear register offset from set register + * @single_it_line: Only a single IT line is used for both events/errors + * @fmp_cr1_bit: Fast Mode Plus control is done via a bit in CR1 */ struct stm32f7_i2c_setup { u32 speed_freq; @@ -233,6 +236,8 @@ struct stm32f7_i2c_setup { u32 rise_time; u32 fall_time; u32 fmp_clr_offset; + bool single_it_line; + bool fmp_cr1_bit; }; /** @@ -418,6 +423,13 @@ static const struct stm32f7_i2c_setup stm32mp13_setup = { .fmp_clr_offset = 0x4, }; +static const struct stm32f7_i2c_setup stm32mp25_setup = { + .rise_time = STM32F7_I2C_RISE_TIME_DEFAULT, + .fall_time = STM32F7_I2C_FALL_TIME_DEFAULT, + .single_it_line = true, + .fmp_cr1_bit = true, +}; + static inline void stm32f7_i2c_set_bits(void __iomem *reg, u32 mask) { writel_relaxed(readl_relaxed(reg) | mask, reg); @@ -1419,15 +1431,13 @@ static bool stm32f7_i2c_is_slave_busy(struct stm32f7_i2c_dev *i2c_dev) return i == busy; } -static irqreturn_t stm32f7_i2c_slave_isr_event(struct stm32f7_i2c_dev *i2c_dev) +static irqreturn_t stm32f7_i2c_slave_isr_event(struct stm32f7_i2c_dev *i2c_dev, u32 status) { void __iomem *base = i2c_dev->base; - u32 cr2, status, mask; + u32 cr2, mask; u8 val; int ret; - status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); - /* Slave transmitter mode */ if (status & STM32F7_I2C_ISR_TXIS) { i2c_slave_event(i2c_dev->slave_running, @@ -1494,17 +1504,81 @@ static irqreturn_t stm32f7_i2c_slave_isr_event(struct stm32f7_i2c_dev *i2c_dev) return IRQ_HANDLED; } +static irqreturn_t stm32f7_i2c_handle_isr_errs(struct stm32f7_i2c_dev *i2c_dev, u32 status) +{ + struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; + u16 addr = f7_msg->addr; + void __iomem *base = i2c_dev->base; + struct device *dev = i2c_dev->dev; + struct stm32_i2c_dma *dma = i2c_dev->dma; + + /* Bus error */ + if (status & STM32F7_I2C_ISR_BERR) { + dev_err(dev, "Bus error accessing addr 0x%x\n", addr); + writel_relaxed(STM32F7_I2C_ICR_BERRCF, base + STM32F7_I2C_ICR); + stm32f7_i2c_release_bus(&i2c_dev->adap); + f7_msg->result = -EIO; + } + + /* Arbitration loss */ + if (status & STM32F7_I2C_ISR_ARLO) { + dev_dbg(dev, "Arbitration loss accessing addr 0x%x\n", addr); + writel_relaxed(STM32F7_I2C_ICR_ARLOCF, base + STM32F7_I2C_ICR); + f7_msg->result = -EAGAIN; + } + + if (status & STM32F7_I2C_ISR_PECERR) { + dev_err(dev, "PEC error in reception accessing addr 0x%x\n", addr); + writel_relaxed(STM32F7_I2C_ICR_PECCF, base + STM32F7_I2C_ICR); + f7_msg->result = -EINVAL; + } + + if (status & STM32F7_I2C_ISR_ALERT) { + dev_dbg(dev, "SMBus alert received\n"); + writel_relaxed(STM32F7_I2C_ICR_ALERTCF, base + STM32F7_I2C_ICR); + i2c_handle_smbus_alert(i2c_dev->alert->ara); + return IRQ_HANDLED; + } + + if (!i2c_dev->slave_running) { + u32 mask; + /* Disable interrupts */ + if (stm32f7_i2c_is_slave_registered(i2c_dev)) + mask = STM32F7_I2C_XFER_IRQ_MASK; + else + mask = STM32F7_I2C_ALL_IRQ_MASK; + stm32f7_i2c_disable_irq(i2c_dev, mask); + } + + /* Disable dma */ + if (i2c_dev->use_dma) { + stm32f7_i2c_disable_dma_req(i2c_dev); + dmaengine_terminate_async(dma->chan_using); + } + + i2c_dev->master_mode = false; + complete(&i2c_dev->complete); + + return IRQ_HANDLED; +} + +#define STM32F7_ERR_EVENTS (STM32F7_I2C_ISR_BERR | STM32F7_I2C_ISR_ARLO |\ + STM32F7_I2C_ISR_PECERR | STM32F7_I2C_ISR_ALERT) static irqreturn_t stm32f7_i2c_isr_event(int irq, void *data) { struct stm32f7_i2c_dev *i2c_dev = data; u32 status; - /* Check if the interrupt is for a slave device */ - if (!i2c_dev->master_mode) - return IRQ_WAKE_THREAD; - status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); + /* + * Check if the interrupt is for a slave device or related + * to errors flags (in case of single it line mode) + */ + if (!i2c_dev->master_mode || + (i2c_dev->setup.single_it_line && (status & STM32F7_ERR_EVENTS))) + return IRQ_WAKE_THREAD; + /* Tx empty */ if (status & STM32F7_I2C_ISR_TXIS) stm32f7_i2c_write_tx_data(i2c_dev); @@ -1531,10 +1605,14 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) u32 status, mask; int ret; + status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); + if (!i2c_dev->master_mode) - return stm32f7_i2c_slave_isr_event(i2c_dev); + return stm32f7_i2c_slave_isr_event(i2c_dev, status); - status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); + /* Handle errors in case of this handler is used for events/errors */ + if (i2c_dev->setup.single_it_line && (status & STM32F7_ERR_EVENTS)) + return stm32f7_i2c_handle_isr_errs(i2c_dev, status); /* NACK received */ if (status & STM32F7_I2C_ISR_NACKF) { @@ -1601,63 +1679,11 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) static irqreturn_t stm32f7_i2c_isr_error_thread(int irq, void *data) { struct stm32f7_i2c_dev *i2c_dev = data; - struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg; - u16 addr = f7_msg->addr; - void __iomem *base = i2c_dev->base; - struct device *dev = i2c_dev->dev; - struct stm32_i2c_dma *dma = i2c_dev->dma; u32 status; status = readl_relaxed(i2c_dev->base + STM32F7_I2C_ISR); - /* Bus error */ - if (status & STM32F7_I2C_ISR_BERR) { - dev_err(dev, "Bus error accessing addr 0x%x\n", addr); - writel_relaxed(STM32F7_I2C_ICR_BERRCF, base + STM32F7_I2C_ICR); - stm32f7_i2c_release_bus(&i2c_dev->adap); - f7_msg->result = -EIO; - } - - /* Arbitration loss */ - if (status & STM32F7_I2C_ISR_ARLO) { - dev_dbg(dev, "Arbitration loss accessing addr 0x%x\n", addr); - writel_relaxed(STM32F7_I2C_ICR_ARLOCF, base + STM32F7_I2C_ICR); - f7_msg->result = -EAGAIN; - } - - if (status & STM32F7_I2C_ISR_PECERR) { - dev_err(dev, "PEC error in reception accessing addr 0x%x\n", addr); - writel_relaxed(STM32F7_I2C_ICR_PECCF, base + STM32F7_I2C_ICR); - f7_msg->result = -EINVAL; - } - - if (status & STM32F7_I2C_ISR_ALERT) { - dev_dbg(dev, "SMBus alert received\n"); - writel_relaxed(STM32F7_I2C_ICR_ALERTCF, base + STM32F7_I2C_ICR); - i2c_handle_smbus_alert(i2c_dev->alert->ara); - return IRQ_HANDLED; - } - - if (!i2c_dev->slave_running) { - u32 mask; - /* Disable interrupts */ - if (stm32f7_i2c_is_slave_registered(i2c_dev)) - mask = STM32F7_I2C_XFER_IRQ_MASK; - else - mask = STM32F7_I2C_ALL_IRQ_MASK; - stm32f7_i2c_disable_irq(i2c_dev, mask); - } - - /* Disable dma */ - if (i2c_dev->use_dma) { - stm32f7_i2c_disable_dma_req(i2c_dev); - dmaengine_terminate_async(dma->chan_using); - } - - i2c_dev->master_mode = false; - complete(&i2c_dev->complete); - - return IRQ_HANDLED; + return stm32f7_i2c_handle_isr_errs(i2c_dev, status); } static int stm32f7_i2c_wait_polling(struct stm32f7_i2c_dev *i2c_dev) @@ -1996,20 +2022,24 @@ static int stm32f7_i2c_write_fm_plus_bits(struct stm32f7_i2c_dev *i2c_dev, int ret; if (i2c_dev->bus_rate <= I2C_MAX_FAST_MODE_FREQ || - IS_ERR_OR_NULL(i2c_dev->regmap)) + (!i2c_dev->setup.fmp_cr1_bit && IS_ERR_OR_NULL(i2c_dev->regmap))) /* Optional */ return 0; - if (i2c_dev->fmp_sreg == i2c_dev->fmp_creg) - ret = regmap_update_bits(i2c_dev->regmap, - i2c_dev->fmp_sreg, - i2c_dev->fmp_mask, - enable ? i2c_dev->fmp_mask : 0); - else - ret = regmap_write(i2c_dev->regmap, - enable ? i2c_dev->fmp_sreg : - i2c_dev->fmp_creg, - i2c_dev->fmp_mask); + if (i2c_dev->setup.fmp_cr1_bit) { + if (enable) + stm32f7_i2c_set_bits(i2c_dev->base + STM32F7_I2C_CR1, STM32_I2C_CR1_FMP); + else + stm32f7_i2c_clr_bits(i2c_dev->base + STM32F7_I2C_CR1, STM32_I2C_CR1_FMP); + } else { + if (i2c_dev->fmp_sreg == i2c_dev->fmp_creg) + ret = regmap_update_bits(i2c_dev->regmap, i2c_dev->fmp_sreg, + i2c_dev->fmp_mask, enable ? i2c_dev->fmp_mask : 0); + else + ret = regmap_write(i2c_dev->regmap, + enable ? i2c_dev->fmp_sreg : i2c_dev->fmp_creg, + i2c_dev->fmp_mask); + } return ret; } @@ -2143,6 +2173,13 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) if (!i2c_dev) return -ENOMEM; + setup = of_device_get_match_data(&pdev->dev); + if (!setup) { + dev_err(&pdev->dev, "Can't get device data\n"); + return -ENODEV; + } + i2c_dev->setup = *setup; + i2c_dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(i2c_dev->base)) return PTR_ERR(i2c_dev->base); @@ -2152,9 +2189,11 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) if (irq_event < 0) return irq_event; - irq_error = platform_get_irq(pdev, 1); - if (irq_error < 0) - return irq_error; + if (!i2c_dev->setup.single_it_line) { + irq_error = platform_get_irq(pdev, 1); + if (irq_error < 0) + return irq_error; + } i2c_dev->wakeup_src = of_property_read_bool(pdev->dev.of_node, "wakeup-source"); @@ -2186,23 +2225,18 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) return ret; } - ret = devm_request_threaded_irq(&pdev->dev, irq_error, - NULL, - stm32f7_i2c_isr_error_thread, - IRQF_ONESHOT, - pdev->name, i2c_dev); - if (ret) { - dev_err(&pdev->dev, "Failed to request irq error %i\n", - irq_error); - return ret; - } - - setup = of_device_get_match_data(&pdev->dev); - if (!setup) { - dev_err(&pdev->dev, "Can't get device data\n"); - return -ENODEV; + if (!i2c_dev->setup.single_it_line) { + ret = devm_request_threaded_irq(&pdev->dev, irq_error, + NULL, + stm32f7_i2c_isr_error_thread, + IRQF_ONESHOT, + pdev->name, i2c_dev); + if (ret) { + dev_err(&pdev->dev, "Failed to request irq error %i\n", + irq_error); + return ret; + } } - i2c_dev->setup = *setup; ret = stm32f7_i2c_setup_timing(i2c_dev, &i2c_dev->setup); if (ret) @@ -2210,9 +2244,12 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) /* Setup Fast mode plus if necessary */ if (i2c_dev->bus_rate > I2C_MAX_FAST_MODE_FREQ) { - ret = stm32f7_i2c_setup_fm_plus_bits(pdev, i2c_dev); - if (ret) - return ret; + if (!i2c_dev->setup.fmp_cr1_bit) { + ret = stm32f7_i2c_setup_fm_plus_bits(pdev, i2c_dev); + if (ret) + return ret; + } + ret = stm32f7_i2c_write_fm_plus_bits(i2c_dev, true); if (ret) return ret; @@ -2491,6 +2528,7 @@ static const struct of_device_id stm32f7_i2c_match[] = { { .compatible = "st,stm32f7-i2c", .data = &stm32f7_setup}, { .compatible = "st,stm32mp15-i2c", .data = &stm32mp15_setup}, { .compatible = "st,stm32mp13-i2c", .data = &stm32mp13_setup}, + { .compatible = "st,stm32mp25-i2c", .data = &stm32mp25_setup}, {}, }; MODULE_DEVICE_TABLE(of, stm32f7_i2c_match); From patchwork Wed Nov 29 12:59:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472836 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 C3ACAC4167B for ; Wed, 29 Nov 2023 13:04:37 +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:References:In-Reply-To: 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: List-Owner; bh=hgppAF9xHN3TRMTbGv6WPSp/WNnCTW1pIK57DR+tt3U=; b=jKZwZqheeTI9s0 jFE6O89tgv9abJ5JhxJIAr5PyJf8p5ua/ZiolEVrk1mH88nA57H38yBIEeZzOR+WjxLFMackFCSKH gBst4MYalJWtr6aDffSbetjzZuY+4o/wAKa5Lcnf2R2t7JEsL1sUPs1rf6D7yCm4Ubw43KaO7cobH 9Ngy13cQyzPJ3xb6wcbpJzoJAZe/kEwGeEBAHnWL8l9K6YJkV2AQt2za82BeSLRH621psurdaizUH Ps6ACZRItoftp6bN3qkjA134tthqnkCIkEVtjqcBy7n8Mla3SAQ2Ik26Q+1nAI4yK+L4qADxl8ueP zFqH2aRCwSHoCngZqEJg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KEb-008Pfr-18; Wed, 29 Nov 2023 13:04:09 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KEY-008Peo-0O for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:04:07 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 3AT8ZTcW030939; Wed, 29 Nov 2023 14:03:59 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=7x13rzlhzBA/WUsQZBn3ger9yipGaMmBYw0BFmvTano=; b=BO Fc0zC4CF+P9ftGQy6otMTWgrMg0cBx5rNjnOIuQ4svmTPK3mIqIXh2smh0ks1gdM hFUFf3B2klytGg0qKosE9Hwkcphud0XG+qD6BK2kHotOjb/6T1rf+FEN34TrUZuQ 9posNMLTqPFBr5axX+MAMAc8309kQv6lvoyMKlIBYP/ajbbZI+e4Odlb3MSCKeRL Zc2Iu8mKaSTWo3Ubc81VM6PMoCm1ESDBmNRFSbmD5qPctD9L4B0eSr6vC8cjA1SG 9zK1tjPYfkt3OklPjZtWVN5v7OHeiW8CV97MH2m/vEgerdP1lP61xrHnOTDFcxEC ip1mfHUaDzytw3Rp7Jcw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3uk9521auj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:03:59 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B4773100066; Wed, 29 Nov 2023 14:03:45 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 4316D21BF5B; Wed, 29 Nov 2023 14:03:46 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:03:46 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 5/7] arm64: dts: st: add all 8 i2c nodes on stm32mp251 Date: Wed, 29 Nov 2023 13:59:14 +0100 Message-ID: <20231129125920.1702497-6-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050406_483590_81A0670A X-CRM114-Status: GOOD ( 10.93 ) 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 Add the 8 nodes for all i2c instances available on the stm32mp251. Signed-off-by: Alain Volmat --- arch/arm64/boot/dts/st/stm32mp251.dtsi | 96 ++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi index 124403f5f1f4..56b28697bafc 100644 --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi @@ -126,6 +126,102 @@ usart2: serial@400e0000 { status = "disabled"; }; + i2c1: i2c@40120000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40120000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C1>; + resets = <&rcc I2C1_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c2: i2c@40130000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40130000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C2>; + resets = <&rcc I2C2_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c3: i2c@40140000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40140000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C3>; + resets = <&rcc I2C3_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c4: i2c@40150000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40150000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C4>; + resets = <&rcc I2C4_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c5: i2c@40160000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40160000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C5>; + resets = <&rcc I2C5_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c6: i2c@40170000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40170000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C6>; + resets = <&rcc I2C6_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c7: i2c@40180000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x40180000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C7>; + resets = <&rcc I2C7_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c8: i2c@46040000 { + compatible = "st,stm32mp25-i2c"; + reg = <0x46040000 0x400>; + interrupt-names = "event"; + interrupts = ; + clocks = <&rcc CK_KER_I2C8>; + resets = <&rcc I2C8_R>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + sdmmc1: mmc@48220000 { compatible = "st,stm32mp25-sdmmc2", "arm,pl18x", "arm,primecell"; arm,primecell-periphid = <0x00353180>; From patchwork Wed Nov 29 12:59:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472837 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 4EDB7C4167B for ; Wed, 29 Nov 2023 13:04:54 +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:References:In-Reply-To: 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: List-Owner; bh=BxuctFIRj7NXQpSqT0wgmRbG4OYk/YPXnlgPYnj1tqk=; b=CPjWyQ5TFNRLZH WuBlrboucvNA5ame7bvpNGUaO7OHsfC0DF3/v24Z6/fggkeu7WmkfRCFh/UfZFVVlPdiKC7trdrez dcHT7rdury+vTycLOdqtiCkE4TG0hTEHuaD94jIgGApwkmukRJMSe7AGna4E4BgyFxcAMysZ7C+Pk L2OyZb5Zcss5YxKZ62YT+Eo6AdoAhSVN5zelfwdir3xIgOBaTFVDmEWf8+DpYCIgvgBKWRf+3USXl xVk990KLjR1TeilGjsqvHHsmM2QQhOw9mXjJjkttDKCE08LbW/C2JLSZnSGCUoQ1ypAJqFkXuv3DB N29fLn1D6nJGSfWSstuw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KEp-008PjH-0x; Wed, 29 Nov 2023 13:04:23 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KEm-008PiG-04 for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:04:21 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 3AT91cu0030961; Wed, 29 Nov 2023 14:04:14 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=gmw5KgSBJw8JBiuHaxGZmQ8x/KuH7Q2WDFM7TzdfLro=; b=Hv nDVh5heIX6pYJqtC7ydCXI4tEBrSZ7tqdezq2kJshoDx7e1RBvwr8Yj8sk1VktZ+ qvZEcoNtpqMtJmONRaZr34zg+q574QWyg3WiYkpPoUitL/npbYSIVZU5y4V9u/p7 NY+uYsU1x0Lg97zTUkkFIqIEKoaXum/ZMiq4cYaVPI7HuofSayJL24je7Hl/C0nY NE+8Jx6ww7qgjEwspwmIN0WM3aqf+OxCvNTAeKGPq1hZmJMJf5aseH3YSZMuWX38 l9f6nEF3UHVSjCNF0L298u83D/3mZmlPtBoHXnjJnkV/XKuk8KP+7bj7eWMbK4nb TehcCxQx+qTtunvjPe/Q== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3uk9521awj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:04:14 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2DBF410002A; Wed, 29 Nov 2023 14:04:13 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id AE86221BF7E; Wed, 29 Nov 2023 14:04:13 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:04:13 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 6/7] arm64: dts: st: add i2c2/i2c8 pins for stm32mp25 Date: Wed, 29 Nov 2023 13:59:15 +0100 Message-ID: <20231129125920.1702497-7-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050420_379705_2CA29A3C X-CRM114-Status: GOOD ( 11.49 ) 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 Add the i2c2 and i2c8 pins used on STM32MP257F-EV1 board. Signed-off-by: Alain Volmat --- arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi index 66791a974f8f..4194807606ce 100644 --- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi @@ -6,6 +6,23 @@ #include &pinctrl { + i2c2_pins_a: i2c2-0 { + pins { + pinmux = , /* I2C2_SCL */ + ; /* I2C2_SDA */ + bias-disable; + drive-open-drain; + slew-rate = <0>; + }; + }; + + i2c2_sleep_pins_a: i2c2-sleep-0 { + pins { + pinmux = , /* I2C2_SCL */ + ; /* I2C2_SDA */ + }; + }; + sdmmc1_b4_pins_a: sdmmc1-b4-0 { pins1 { pinmux = , /* SDMMC1_D0 */ @@ -90,3 +107,22 @@ pins { }; }; }; + +&pinctrl_z { + i2c8_pins_a: i2c8-0 { + pins { + pinmux = , /* I2C8_SCL */ + ; /* I2C8_SDA */ + bias-disable; + drive-open-drain; + slew-rate = <0>; + }; + }; + + i2c8_sleep_pins_a: i2c8-sleep-0 { + pins { + pinmux = , /* I2C8_SCL */ + ; /* I2C8_SDA */ + }; + }; +}; From patchwork Wed Nov 29 12:59:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 13472838 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 E2FE7C4167B for ; Wed, 29 Nov 2023 13:05:05 +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:References:In-Reply-To: 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: List-Owner; bh=l2f3ADJX60AUc4CDDU0YzKm5dZhQCR1+TDPXjMG2zYI=; b=w0eOPMliIqt0Hl 0CRcmZNjBj1Or1sn6On1UveNVmxhHZFPD3wo9SAj19RuOfJ+3rziPO9D/veSeFePf1FaDijPk4lCe M60vaUbqZNbF3wLFQl6+Mt47XgVKDipUhdOCdkVyLPBcbeQupvjheihNaaVHYC+vfVwy8zJMpBKmz iaLbooRz3GYaRWae2gsHkkZwBo599bFAGsJ+Hk23W8SLb9WwlOJM23mnNXwNV+Qqrg8Yjfxs/6Usy Apn4ZBUOrsBs1idafOc7/SICabjv+g9K8LR5sV9TuAXvkhQGWPmHgROFYQqOjchPFbJVTZ8gEYpBg OWwhKd3ApATXIhuOIcUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r8KF4-008Pnd-0F; Wed, 29 Nov 2023 13:04:38 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r8KF1-008PmG-0P for linux-arm-kernel@lists.infradead.org; Wed, 29 Nov 2023 13:04:36 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 3AT8vK3V030958; Wed, 29 Nov 2023 14:04:28 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=6AU3mM4W4Dpoj7He082seCwDnAZEhdu+kcbYvk2yFl8=; b=vn n1ywX5H+G/YjKEflyGiG9D5Eq1ZqDVDyHX0Q4+u6lQSRJv9xI9JzT+ti7Ogp0TJD P5krJ8rTIXcTVLd8EYr0KuQS6Lex5FQSwSMqKp7svbQtremZmG+6NzfaDrJMBbUk GIgBq9wGPMFbVCaI2MLOWqsfNM6iyFD2O852zibsPA3nT7e2QPSF1SYeOV+fNnQl gvpt89XjC7TWvTdUQFWZYAsY/mbsmEmvEM3tkD/k8gwWcc23Uxrg15SzSoIImxhj zeQK/bjngqqAYarZ8CBhj0Ou766NpzF3ctpRDpx4ClRxr3QWFYvvGnIecjLX4Rpw gEoaHzAvbX/NFM4OuTIA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3uk9521ay0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Nov 2023 14:04:28 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 4C2EC10002A; Wed, 29 Nov 2023 14:04:27 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id CA9B421D387; Wed, 29 Nov 2023 14:04:27 +0100 (CET) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 29 Nov 2023 14:04:27 +0100 From: Alain Volmat To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Pierre-Yves MORDRET , Alain Volmat CC: , , , , Subject: [PATCH 7/7] arm64: dts: st: add i2c2 / i2c8 properties on stm32mp257f-ev1 Date: Wed, 29 Nov 2023 13:59:16 +0100 Message-ID: <20231129125920.1702497-8-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231129125920.1702497-1-alain.volmat@foss.st.com> References: <20231129125920.1702497-1-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.213] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-29_09,2023-11-29_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231129_050435_488183_88FA105F X-CRM114-Status: GOOD ( 11.05 ) 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 Add properties for i2c2 and i2c8 available on the stm32mp257f-ev1. i2c2 is enabled since several devices are attached to it while i2c8 is kept disabled since only used via the gpio expansion connector. Signed-off-by: Alain Volmat --- arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts index b2d3afb15758..0ea8e69bfb3d 100644 --- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts +++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts @@ -55,6 +55,26 @@ &arm_wdt { status = "okay"; }; +&i2c2 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&i2c2_pins_a>; + pinctrl-1 = <&i2c2_sleep_pins_a>; + i2c-scl-rising-time-ns = <100>; + i2c-scl-falling-time-ns = <13>; + clock-frequency = <400000>; + status = "okay"; +}; + +&i2c8 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&i2c8_pins_a>; + pinctrl-1 = <&i2c8_sleep_pins_a>; + i2c-scl-rising-time-ns = <57>; + i2c-scl-falling-time-ns = <7>; + clock-frequency = <400000>; + status = "disabled"; +}; + &sdmmc1 { pinctrl-names = "default", "opendrain", "sleep"; pinctrl-0 = <&sdmmc1_b4_pins_a>;