Hi, Yongqiang:
Yongqiang Niu yongqiang.niu@mediatek.com 於 2020年12月10日 週四 下午5:08寫道：
This patch add RDMA fifo size error handle rdma fifo size will not always bigger than the calculated threshold if that case happened, we need set fifo size as the threshold
Signed-off-by: Yongqiang Niu yongqiang.niu@mediatek.com
drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c index 794acc5..0508392 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c @@ -151,6 +151,10 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, * account for blanking, and with a pixel depth of 4 bytes: */ threshold = width * height * vrefresh * 4 * 7 / 1000000;
if (threshold > rdma_fifo_size)threshold = rdma_fifo_size;
If the formula is not correct, you should fix the formula not work around.
Regards, Chun-Kuang.
reg = RDMA_FIFO_UNDERFLOW_EN | RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) | RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);-- 1.8.1.1.dirty _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek