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[213.161.3.76]) by smtp.gmail.com with ESMTPSA id i24-20020a05640200d800b0042dcac2afc6sm2874051edu.72.2022.06.16.21.13.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jun 2022 21:13:08 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: mripard@kernel.org, wens@csie.org, Samuel Holland Cc: airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/sun4i: Add DMA mask and segment size Date: Fri, 17 Jun 2022 06:13:06 +0200 Message-ID: <10094862.nUPlyArG6x@jernej-laptop> In-Reply-To: References: <20220616213240.392041-1-jernej.skrabec@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220616_211311_052573_96054204 X-CRM114-Status: GOOD ( 19.63 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Dne petek, 17. junij 2022 ob 05:03:11 CEST je Samuel Holland napisal(a): > Hi Jernej, > > On 6/16/22 4:32 PM, Jernej Skrabec wrote: > > Kernel occasionally complains that there is mismatch in segment size > > when trying to render HW decoded videos and rendering them directly with > > sun4i DRM driver. > > > > Fix that by setting DMA mask and segment size. > > > > Signed-off-by: Jernej Skrabec > > --- > > > > drivers/gpu/drm/sun4i/sun4i_drv.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c > > b/drivers/gpu/drm/sun4i/sun4i_drv.c index 275f7e4a03ae..83f4e87f77f6 > > 100644 > > --- a/drivers/gpu/drm/sun4i/sun4i_drv.c > > +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c > > @@ -7,6 +7,7 @@ > > > > */ > > > > #include > > > > +#include > > > > #include > > #include > > #include > > > > @@ -367,6 +368,9 @@ static int sun4i_drv_probe(struct platform_device > > *pdev)> > > INIT_KFIFO(list.fifo); > > > > + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); > > Isn't this already the default, from of_dma_configure_id or > setup_pdev_dma_masks? Not sure, I need to check. > > + dma_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); > > This looks like a good change. In fact, I think we need a similar change in > some other drivers. Should be DMA_BIT_MASK(25) as in your other patch? Best regards, Jernej > > Regards, > Samuel _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel