From patchwork Fri May 3 15:31:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 10928913 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 067AB933 for ; Fri, 3 May 2019 15:32:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EBB511FE84 for ; Fri, 3 May 2019 15:32:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DFF9228592; Fri, 3 May 2019 15:32:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 68CE81FE84 for ; Fri, 3 May 2019 15:32:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6093E6E7F5; Fri, 3 May 2019 15:32:00 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id 7972C6E7F5 for ; Fri, 3 May 2019 15:31:59 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5AB2D80D; Fri, 3 May 2019 08:31:59 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.196.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 17E963F557; Fri, 3 May 2019 08:31:57 -0700 (PDT) From: Robin Murphy To: robh@kernel.org, tomeu.vizoso@collabora.com Subject: [PATCH 1/4] drm/panfrost: Set DMA masks earlier Date: Fri, 3 May 2019 16:31:42 +0100 Message-Id: <64361b929a5c61d2ab9580262ecb3d369164cfcb.1556195258.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The DMA masks need to be set correctly before any DMA API activity kicks off, and the current point in panfrost_probe() is way too late in that regard. since panfrost_mmu_init() has already set up a live address space and DMA-mapped MMU pagetables. We can't set masks until we've queried the appropriate value from MMU_FEATURES, but as soon as reasonably possible after that should suffice. Signed-off-by: Robin Murphy --- drivers/gpu/drm/panfrost/panfrost_drv.c | 5 ----- drivers/gpu/drm/panfrost/panfrost_gpu.c | 5 +++++ 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index c06af78ab833..af0058ffc1e4 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -3,8 +3,6 @@ /* Copyright 2019 Linaro, Ltd., Rob Herring */ /* Copyright 2019 Collabora ltd. */ -#include -#include #include #include #include @@ -388,9 +386,6 @@ static int panfrost_probe(struct platform_device *pdev) goto err_out0; } - dma_set_mask_and_coherent(pfdev->dev, - DMA_BIT_MASK(FIELD_GET(0xff00, pfdev->features.mmu_features))); - err = panfrost_devfreq_init(pfdev); if (err) { dev_err(&pdev->dev, "Fatal error during devfreq init\n"); diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c index aceaf6e44a09..42511fc1fea0 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c @@ -2,8 +2,10 @@ /* Copyright 2018 Marty E. Plummer */ /* Copyright 2019 Linaro, Ltd., Rob Herring */ /* Copyright 2019 Collabora ltd. */ +#include #include #include +#include #include #include #include @@ -332,6 +334,9 @@ int panfrost_gpu_init(struct panfrost_device *pfdev) panfrost_gpu_init_features(pfdev); + dma_set_mask_and_coherent(pfdev->dev, + DMA_BIT_MASK(FIELD_GET(0xff00, pfdev->features.mmu_features))); + irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "gpu"); if (irq <= 0) return -ENODEV; From patchwork Fri May 3 15:31:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 10928915 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ACAD8912 for ; Fri, 3 May 2019 15:32:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9DAD81FE84 for ; Fri, 3 May 2019 15:32:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 919D528592; Fri, 3 May 2019 15:32:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4F1021FE84 for ; Fri, 3 May 2019 15:32:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4ED736E7F6; Fri, 3 May 2019 15:32:02 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id 16D356E7F6 for ; Fri, 3 May 2019 15:32:01 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E4613EBD; Fri, 3 May 2019 08:32:00 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.196.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9AEE13F557; Fri, 3 May 2019 08:31:59 -0700 (PDT) From: Robin Murphy To: robh@kernel.org, tomeu.vizoso@collabora.com Subject: [PATCH 2/4] drm/panfrost: Disable PM on probe failure Date: Fri, 3 May 2019 16:31:43 +0100 Message-Id: <2487391e7646cabbc52e9b4c20182e39d3f61859.1556195258.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Make sure to disable runtime PM again if probe fails after we've enabled it. Otherwise, any subsequent attempt to re-probe starts triggering "Unbalanced pm_runtime_enable!" assertions from the driver core. Signed-off-by: Robin Murphy --- drivers/gpu/drm/panfrost/panfrost_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index af0058ffc1e4..a881e2346b55 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -405,6 +405,7 @@ static int panfrost_probe(struct platform_device *pdev) err_out1: panfrost_device_fini(pfdev); err_out0: + pm_runtime_disable(pfdev->dev); drm_dev_put(ddev); return err; } From patchwork Fri May 3 15:31:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 10928917 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6EB8C933 for ; Fri, 3 May 2019 15:32:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6070C1FE84 for ; Fri, 3 May 2019 15:32:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 547F128592; Fri, 3 May 2019 15:32:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 07DBC1FE84 for ; Fri, 3 May 2019 15:32:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DB9C96E7FB; Fri, 3 May 2019 15:32:03 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id 97E306E7F9 for ; Fri, 3 May 2019 15:32:02 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7B31F15AD; Fri, 3 May 2019 08:32:02 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.196.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 307D93F557; Fri, 3 May 2019 08:32:01 -0700 (PDT) From: Robin Murphy To: robh@kernel.org, tomeu.vizoso@collabora.com Subject: [PATCH 3/4] drm/panfrost: Don't scream about deferred probe Date: Fri, 3 May 2019 16:31:44 +0100 Message-Id: X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Probe deferral is far from "fatal". Signed-off-by: Robin Murphy --- drivers/gpu/drm/panfrost/panfrost_drv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index a881e2346b55..4a3fd942ddc6 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -382,13 +382,15 @@ static int panfrost_probe(struct platform_device *pdev) err = panfrost_device_init(pfdev); if (err) { - dev_err(&pdev->dev, "Fatal error during GPU init\n"); + if (err != -EPROBE_DEFER) + dev_err(&pdev->dev, "Fatal error during GPU init\n"); goto err_out0; } err = panfrost_devfreq_init(pfdev); if (err) { - dev_err(&pdev->dev, "Fatal error during devfreq init\n"); + if (err != -EPROBE_DEFER) + dev_err(&pdev->dev, "Fatal error during devfreq init\n"); goto err_out1; } From patchwork Fri May 3 15:31:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 10928919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEF1B933 for ; Fri, 3 May 2019 15:32:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF18E1FE84 for ; Fri, 3 May 2019 15:32:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C354828592; Fri, 3 May 2019 15:32:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 80AB41FE84 for ; Fri, 3 May 2019 15:32:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2BBF56E7F9; Fri, 3 May 2019 15:32:05 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id 235486E7F9 for ; Fri, 3 May 2019 15:32:04 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 080B2165C; Fri, 3 May 2019 08:32:04 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.196.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id BBB323F557; Fri, 3 May 2019 08:32:02 -0700 (PDT) From: Robin Murphy To: robh@kernel.org, tomeu.vizoso@collabora.com Subject: [PATCH 4/4] drm/panfrost: Show stored feature registers Date: Fri, 3 May 2019 16:31:45 +0100 Message-Id: X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Re-reading the feature registers for the sake of displaying the raw values seems pointless, and in fact showing the copies that we've already read and stored is arguably more useful in terms of giving exposure to any potential bugs in that part of the process. Signed-off-by: Robin Murphy --- drivers/gpu/drm/panfrost/panfrost_gpu.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c index 42511fc1fea0..58ef25573cda 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c @@ -278,13 +278,13 @@ static void panfrost_gpu_init_features(struct panfrost_device *pfdev) pfdev->features.hw_issues); dev_info(pfdev->dev, "Features: L2:0x%08x Shader:0x%08x Tiler:0x%08x Mem:0x%0x MMU:0x%08x AS:0x%x JS:0x%x", - gpu_read(pfdev, GPU_L2_FEATURES), - gpu_read(pfdev, GPU_CORE_FEATURES), - gpu_read(pfdev, GPU_TILER_FEATURES), - gpu_read(pfdev, GPU_MEM_FEATURES), - gpu_read(pfdev, GPU_MMU_FEATURES), - gpu_read(pfdev, GPU_AS_PRESENT), - gpu_read(pfdev, GPU_JS_PRESENT)); + pfdev->features.l2_features, + pfdev->features.core_features, + pfdev->features.tiler_features, + pfdev->features.mem_features, + pfdev->features.mmu_features, + pfdev->features.as_present, + pfdev->features.js_present); dev_info(pfdev->dev, "shader_present=0x%0llx l2_present=0x%0llx", pfdev->features.shader_present, pfdev->features.l2_present); From patchwork Fri May 3 15:31:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 10928923 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD40717E6 for ; Fri, 3 May 2019 15:32:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AEDF61FE84 for ; Fri, 3 May 2019 15:32:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A32BD28592; Fri, 3 May 2019 15:32:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 50F161FE84 for ; Fri, 3 May 2019 15:32:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2F7716E7FC; Fri, 3 May 2019 15:32:07 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by gabe.freedesktop.org (Postfix) with ESMTP id C734E6E7FC for ; Fri, 3 May 2019 15:32:05 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8802480D; Fri, 3 May 2019 08:32:05 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.196.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 489A53F557; Fri, 3 May 2019 08:32:04 -0700 (PDT) From: Robin Murphy To: robh@kernel.org, tomeu.vizoso@collabora.com Subject: [RFC 5/4] arm64: dts: juno: add GPU subsystem Date: Fri, 3 May 2019 16:31:46 +0100 Message-Id: <0d17a3c08fb435e54b3b5b748ac83b6a016e0525.1556896081.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Since we now have bindings for Mali Midgard GPUs, let's use them to describe Juno's GPU subsystem, if only because we can. Juno sports a Mali-T624 integrated behind an MMU-400 (as a gesture towards virtualisation), in their own dedicated power domain with DVFS controlled by the SCP. Signed-off-by: Robin Murphy --- Just in case anyone else is interested. Note that I've not been using this exact patch, since my Juno is running the new SCMI-based firmware which needs not-yet-upstream MHU changes, but this should in theory be the equivalent change for the upstream SCPI-based DT. .../bindings/gpu/arm,mali-midgard.txt | 1 + arch/arm64/boot/dts/arm/juno-base.dtsi | 25 +++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt index 18a2cde2e5f3..c17f8e96d1e6 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -16,6 +16,7 @@ Required properties: + "arm,mali-t880" * which must be preceded by one of the following vendor specifics: + "amlogic,meson-gxm-mali" + + "arm,juno-mali" + "rockchip,rk3288-mali" + "rockchip,rk3399-mali" diff --git a/arch/arm64/boot/dts/arm/juno-base.dtsi b/arch/arm64/boot/dts/arm/juno-base.dtsi index 995a7107cdd3..6edaf03620f9 100644 --- a/arch/arm64/boot/dts/arm/juno-base.dtsi +++ b/arch/arm64/boot/dts/arm/juno-base.dtsi @@ -35,6 +35,18 @@ clock-names = "apb_pclk"; }; + smmu_gpu: iommu@2b400000 { + compatible = "arm,mmu-400", "arm,smmu-v1"; + reg = <0x0 0x2b400000 0x0 0x10000>; + interrupts = , + ; + #iommu-cells = <1>; + #global-interrupts = <1>; + power-domains = <&scpi_devpd 3>; + dma-coherent; + status = "disabled"; + }; + smmu_pcie: iommu@2b500000 { compatible = "arm,mmu-401", "arm,smmu-v1"; reg = <0x0 0x2b500000 0x0 0x10000>; @@ -487,6 +499,19 @@ }; }; + gpu: gpu@2d000000 { + compatible = "arm,juno-mali", "arm,mali-t624"; + reg = <0 0x2d000000 0 0x10000>; + interrupts = , + , + ; + interrupt-names = "gpu", "job", "mmu"; + clocks = <&scpi_dvfs 2>; + power-domains = <&scpi_devpd 3>; + dma-coherent; + status = "disabled"; + }; + sram: sram@2e000000 { compatible = "arm,juno-sram-ns", "mmio-sram"; reg = <0x0 0x2e000000 0x0 0x8000>;