From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
NXP Linux Team <linux-imx@nxp.com>,
Magnus Damm <magnus.damm@gmail.com>,
Ezequiel Garcia <ezequiel@collabora.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Geert Uytterhoeven <geert@linux-m68k.org>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
linux-renesas-soc@vger.kernel.org,
Fabio Estevam <festevam@gmail.com>,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: [PATCH v3 2/4] media: i2c: ov5645: Switch to assigned-clock-rates
Date: Fri, 13 Mar 2020 21:12:32 +0000 [thread overview]
Message-ID: <1584133954-6953-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <1584133954-6953-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com>
This patch switches to assigned-clock-rates for specifying the clock rate.
The clk-conf.c internally handles setting the clock rate when
assigned-clock-rates is passed.
The driver now sets the clock frequency only if the deprecated property
clock-frequency is defined instead assigned-clock-rates, this is to avoid
breakage with existing DT binaries.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
drivers/media/i2c/ov5645.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index a6c17d1..4fbabf3 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -1055,6 +1055,7 @@ static int ov5645_probe(struct i2c_client *client)
struct device_node *endpoint;
struct ov5645 *ov5645;
u8 chip_id_high, chip_id_low;
+ bool set_clk = false;
unsigned int i;
u32 xclk_freq;
int ret;
@@ -1094,12 +1095,18 @@ static int ov5645_probe(struct i2c_client *client)
return PTR_ERR(ov5645->xclk);
}
- ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq);
- if (ret) {
- dev_err(dev, "could not get xclk frequency\n");
- return ret;
+ /* check if deprecated property clock-frequency is defined */
+ ret = of_property_read_u32(dev->of_node, "clock-frequency",
+ &xclk_freq);
+ if (!ret) {
+ ret = clk_set_rate(ov5645->xclk, xclk_freq);
+ if (ret) {
+ dev_err(dev, "could not set xclk frequency\n");
+ return ret;
+ }
}
+ xclk_freq = clk_get_rate(ov5645->xclk);
/* external clock must be 24MHz, allow 1% tolerance */
if (xclk_freq < 23760000 || xclk_freq > 24240000) {
dev_err(dev, "external clock frequency %u is not supported\n",
@@ -1107,12 +1114,6 @@ static int ov5645_probe(struct i2c_client *client)
return -EINVAL;
}
- ret = clk_set_rate(ov5645->xclk, xclk_freq);
- if (ret) {
- dev_err(dev, "could not set xclk frequency\n");
- return ret;
- }
-
for (i = 0; i < OV5645_NUM_SUPPLIES; i++)
ov5645->supplies[i].supply = ov5645_supply_name[i];
--
2.7.4
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-03-13 21:13 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-13 21:12 [PATCH v3 0/4] ov5645: Switch to assigned-clock-rates Lad Prabhakar
2020-03-13 21:12 ` [PATCH v3 1/4] media: dt-bindings: media: i2c: " Lad Prabhakar
2020-03-13 21:20 ` Laurent Pinchart
2020-03-13 21:25 ` Prabhakar Mahadev Lad
2020-03-13 21:27 ` Laurent Pinchart
2020-03-18 20:13 ` Lad, Prabhakar
2020-03-18 22:33 ` Laurent Pinchart
2020-03-18 22:37 ` Lad, Prabhakar
2020-03-19 12:44 ` Maxime Ripard
2020-03-19 13:03 ` Laurent Pinchart
2020-03-19 13:17 ` Lad, Prabhakar
2020-03-24 15:40 ` Maxime Ripard
2020-03-24 16:04 ` Lad, Prabhakar
2020-03-24 16:12 ` Laurent Pinchart
2020-03-25 21:52 ` Lad, Prabhakar
2020-03-19 13:05 ` Lad, Prabhakar
2020-03-13 21:12 ` Lad Prabhakar [this message]
2020-03-13 21:16 ` [PATCH v3 2/4] media: i2c: ov5645: " Laurent Pinchart
2020-03-13 21:19 ` Prabhakar Mahadev Lad
2020-03-13 21:12 ` [PATCH v3 3/4] media: i2c: ov5645: Set maximum leverage of external clock frequency to 24480000 Lad Prabhakar
2020-03-13 21:23 ` Laurent Pinchart
2020-03-13 21:31 ` Prabhakar Mahadev Lad
2020-03-18 22:41 ` Lad, Prabhakar
2020-03-18 23:22 ` Laurent Pinchart
2020-03-19 8:00 ` Lad, Prabhakar
2020-03-18 23:18 ` Laurent Pinchart
2020-03-19 7:59 ` Lad, Prabhakar
2020-03-13 21:12 ` [PATCH v3 4/4] ARM: dts: imx6qdl-wandboard: Switch to assigned-clock-rates for ov5645 node Lad Prabhakar
2020-03-13 21:25 ` Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1584133954-6953-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com \
--to=prabhakar.mahadev-lad.rj@bp.renesas.com \
--cc=devicetree@vger.kernel.org \
--cc=ezequiel@collabora.com \
--cc=festevam@gmail.com \
--cc=geert@linux-m68k.org \
--cc=kernel@pengutronix.de \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=magnus.damm@gmail.com \
--cc=mark.rutland@arm.com \
--cc=mchehab@kernel.org \
--cc=robh+dt@kernel.org \
--cc=s.hauer@pengutronix.de \
--cc=sakari.ailus@linux.intel.com \
--cc=shawnguo@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).