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k/Phd5aoZXNwsCRqaD2OwFZXr81zSXwE2UdPmIfTYTjeVsOAI7GZ7akCsRPK64ni0XfoXue2 XUSrUUTRimTkuMHrTYaHY3544a+GduQQLLA+avseLmjvKHxsU4zna0p0Yb4czwoJj+wSkVGQ NMDbxcY26CMPK204jhRm9RG687qq6691hbiuAtWABeAsl1AS+mdS7aP/4uOM4kFCvXYgIHxP /BoVz9CZTMEVAZVzbRKyYCLUf1wLhcHzugTiONz9fWMBLLskKvq7m1tlr61mNgY9nVwwClMU uE7i1H9r/2/UXLd+pY82zcXhFrfmKuCDmOkB5xPsOMVQJH8I0/lbqfLAqfsxSb/X1VKaP243 jzi+DzD9cvj2K6eD5j5kcKJJQactXqfJvF1Eb+OnxlB1BCLE8D1rNkPO5O742Mq3MgDmq19l +abzEL6QDAAxn9md8KwrA3RtucNh87cHlDXfUBKa7SRvBjTczDg+HEPNk2u3hrz1j3l2rliQ y1UfYx7Vk/TrdwUIJgKS8QAr8Lw9WuvY2hSqL9vEjx8VAkPWNWPwrQ== Message-ID: <39c6ac7f-dc0d-b178-e804-e05aa7d56316@gmail.com> Date: Wed, 12 Feb 2020 11:38:44 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200207052627.130118-4-drinkcat@chromium.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200212_023849_781840_242F3F11 X-CRM114-Status: GOOD ( 16.55 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, ulf.hansson@linaro.org, Tomeu Vizoso , David Airlie , linux-kernel@vger.kernel.org, Liam Girdwood , dri-devel@lists.freedesktop.org, Steven Price , Mark Brown , linux-mediatek@lists.infradead.org, Alyssa Rosenzweig , Daniel Vetter , hsinyi@chromium.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 07/02/2020 06:26, Nicolas Boichat wrote: > It is useful to know which component cannot be powered on. > > Signed-off-by: Nicolas Boichat > Reviewed-by: Steven Price > Reviewed-by: Alyssa Rosenzweig Reviewed-by: Matthias Brugger > --- > > Was useful when trying to probe Bifrost GPU, to understand what > issue we are facing. > > v4: > - No change > v3: > - Rebased on https://patchwork.kernel.org/patch/11325689/ > > drivers/gpu/drm/panfrost/panfrost_gpu.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c > index 460fc190de6e815..856f2fd1fa8ed27 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c > +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c > @@ -308,17 +308,20 @@ void panfrost_gpu_power_on(struct panfrost_device *pfdev) > gpu_write(pfdev, L2_PWRON_LO, pfdev->features.l2_present); > ret = readl_relaxed_poll_timeout(pfdev->iomem + L2_READY_LO, > val, val == pfdev->features.l2_present, 100, 1000); > + if (ret) > + dev_err(pfdev->dev, "error powering up gpu L2"); > > gpu_write(pfdev, SHADER_PWRON_LO, pfdev->features.shader_present); > - ret |= readl_relaxed_poll_timeout(pfdev->iomem + SHADER_READY_LO, > + ret = readl_relaxed_poll_timeout(pfdev->iomem + SHADER_READY_LO, > val, val == pfdev->features.shader_present, 100, 1000); > + if (ret) > + dev_err(pfdev->dev, "error powering up gpu shader"); > > gpu_write(pfdev, TILER_PWRON_LO, pfdev->features.tiler_present); > - ret |= readl_relaxed_poll_timeout(pfdev->iomem + TILER_READY_LO, > + ret = readl_relaxed_poll_timeout(pfdev->iomem + TILER_READY_LO, > val, val == pfdev->features.tiler_present, 100, 1000); > - > if (ret) > - dev_err(pfdev->dev, "error powering up gpu"); > + dev_err(pfdev->dev, "error powering up gpu tiler"); > } > > void panfrost_gpu_power_off(struct panfrost_device *pfdev) > _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek