linux-kernel - [PATCH v4 5/8] media: staging: tegra-vde: Bump BSEV DMA timeout

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Message-Id: <20220220172950.3401-6-digetx@gmail.com>
Date:   Sun, 20 Feb 2022 20:29:47 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 5/8] media: staging: tegra-vde: Bump BSEV DMA timeout

BSEV DMA timeouts if VDE is downclocked by x10. Bump the timeout to allow
DMA to complete. We don't support freq scaling yet, this is just a minor
improvement which may become useful sometime later.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/staging/media/tegra-vde/h264.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/tegra-vde/h264.c b/drivers/staging/media/tegra-vde/h264.c
index a46c648a26c6..d8e5534e80c8 100644
--- a/drivers/staging/media/tegra-vde/h264.c
+++ b/drivers/staging/media/tegra-vde/h264.c
@@ -135,7 +135,7 @@ static int tegra_vde_wait_bsev(struct tegra_vde *vde, bool wait_dma)
 		return 0;
 
 	err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
-					 !(value & BSE_DMA_BUSY), 1, 100);
+					 !(value & BSE_DMA_BUSY), 1, 1000);
 	if (err) {
 		dev_err(dev, "BSEV DMA timeout\n");
 		return err;
-- 
2.34.1