From: "Niklas Söderlund" <niklas.soderlund@ragnatech.se>
To: Suresh Udipi <sudipi@jp.adit-jv.com>
Cc: mrodin@de.adit-jv.com, akiyama@nds-osk.co.jp,
efriedrich@de.adit-jv.com, erosca@de.adit-jv.com,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
linux-renesas-soc@vger.kernel.org, mchehab@kernel.org,
michael@rodin.online, securitycheck@denso.co.jp
Subject: Re: [PATCH v8 2/3] media: rcar-csi2: Add warning for PHY speed less than minimum
Date: Wed, 1 Jul 2020 00:05:02 +0200 [thread overview]
Message-ID: <20200630220502.GK2365286@oden.dyn.berto.se> (raw)
In-Reply-To: <1592476472-26235-2-git-send-email-sudipi@jp.adit-jv.com>
Hi Suresh,
Thanks for your patch.
On 2020-06-18 19:34:31 +0900, Suresh Udipi wrote:
> Add a warning message when the selected PHY speed is less
> than supported minimum PHY speed given in the hsfreq table[1].
>
> For raspberry pi camera capture on Kingfisher board with resolution
> 640x480, the calculated PHY speed is 48 mbps which is less than
> the minimum PHY speed 80 Mbps from the table[1]. But in this cases
> capture is successful.
>
> [1] specs r19uh0105ej0200-r-car-3rd-generation.pdf [Table 25.9]
>
> Signed-off-by: Suresh Udipi <sudipi@jp.adit-jv.com>
> Signed-off-by: Michael Rodin <mrodin@de.adit-jv.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> ---
> drivers/media/platform/rcar-vin/rcar-csi2.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
> index f18dedc..1184527 100644
> --- a/drivers/media/platform/rcar-vin/rcar-csi2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
> @@ -433,6 +433,10 @@ static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps)
> const struct rcsi2_mbps_reg *hsfreq;
> const struct rcsi2_mbps_reg *hsfreq_prev = NULL;
>
> + if (mbps < priv->info->hsfreqrange->mbps)
> + dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps",
> + mbps, priv->info->hsfreqrange->mbps);
> +
> for (hsfreq = priv->info->hsfreqrange; hsfreq->mbps != 0; hsfreq++) {
> if (hsfreq->mbps >= mbps)
> break;
> --
> 2.7.4
>
--
Regards,
Niklas Söderlund
next prev parent reply other threads:[~2020-06-30 22:05 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 4:49 [PATCH] [RFC] media: rcar-csi2: Corrects the selection of hsfreqrange Suresh Udipi
2020-03-04 19:46 ` Niklas Söderlund
2020-03-16 13:02 ` Niklas Söderlund
2020-03-17 7:08 ` [PATCH v2] [RFC] rcar-vin: rcar-csi2: Correct " Suresh Udipi
2020-03-17 10:37 ` Niklas Söderlund
2020-03-18 9:00 ` Suresh Udipi
2020-03-18 10:19 ` Niklas Söderlund
2020-03-20 8:00 ` [PATCH v3] media: " Suresh Udipi
2020-03-23 4:48 ` [PATCH v4] " Suresh Udipi
2020-04-14 11:56 ` Niklas Söderlund
2020-04-30 6:03 ` [PATCH v5] " Suresh Udipi
2020-05-04 15:01 ` Michael Rodin
2020-05-12 21:30 ` Niklas Söderlund
2020-05-27 15:47 ` Michael Rodin
2020-05-27 16:16 ` [PATCH] rcar-vin: " Michael Rodin
2020-06-05 18:44 ` Michael Rodin
2020-06-08 3:25 ` [PATCH v6] media: " Suresh Udipi
2020-06-10 13:40 ` Niklas Söderlund
2020-06-12 3:10 ` Suresh Udipi
2020-06-12 17:28 ` Michael Rodin
2020-06-15 14:11 ` Niklas Söderlund
2020-06-17 4:57 ` [PATCH v7 1/2] " Suresh Udipi
2020-06-17 4:57 ` [PATCH v7 2/2] media: rcar-csi2: Add warning for PHY speed less than minimum Suresh Udipi
2020-06-17 13:37 ` [PATCH v7 1/2] media: rcar-csi2: Correct the selection of hsfreqrange Michael Rodin
2020-06-18 10:34 ` [PATCH v8 1/3] " Suresh Udipi
2020-06-18 10:34 ` [PATCH v8 2/3] media: rcar-csi2: Add warning for PHY speed less than minimum Suresh Udipi
2020-06-30 22:05 ` Niklas Söderlund [this message]
2020-06-18 10:34 ` [PATCH v8 3/3] media: rcar-csi2: Optimize the selection PHTW register Suresh Udipi
2020-06-30 22:08 ` Niklas Söderlund
2020-07-01 9:52 ` [PATCH v9 1/3] media: rcar-csi2: Correct the selection of hsfreqrange Suresh Udipi
2020-07-01 9:53 ` [PATCH v9 2/3] media: rcar-csi2: Add warning for PHY speed less than minimum Suresh Udipi
2020-07-01 9:53 ` [PATCH v9 3/3] media: rcar-csi2: Optimize the selection PHTW register Suresh Udipi
2020-06-30 22:03 ` [PATCH v8 1/3] media: rcar-csi2: Correct the selection of hsfreqrange Niklas Söderlund
2020-05-27 16:17 ` [PATCH] rcar-vin: rcar-csi2: Select the correct PHTW register Michael Rodin
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