Hello
I am working on OV5640 with Allwinner A64 chip. I followed the steps at
https://linux-sunxi.org/CSI. I used kernel 5.10-rc6 and I compiled buildroot. I
tried to explain what I do step by step.
1- I activated this packages on kernel configuration;
VIDEO_DEV = y
MEDIA_CONTROLLER = y
VIDEO_V4L2_SUBDEV_API = y
V4L_PLATFORM_DRIVERS = y
VIDEO_SUN6I_CSI = m
VIDEO_OV5640 = m
Also I enabled media-ctl and v4l2-ctl package on busybox.
2- I added i2c-csi and &csi node. Nodes are same as those used in pinetab.
i2c-csi {
compatible = "i2c-gpio";
sda-gpios = <&pio 4 13 GPIO_ACTIVE_HIGH>; /* PE13 */
scl-gpios = <&pio 4 12 GPIO_ACTIVE_HIGH>; /* PE12 */
i2c-gpio,delay-us = <5>;
#address-cells = <1>;
#size-cells = <0>;
/* Rear camera */
ov5640: camera@3c {
compatible = "ovti,ov5640";
reg = <0x3c>;
pinctrl-names = "default";
pinctrl-0 = <&csi_mclk_pin>;
clocks = <&ccu CLK_CSI_MCLK>;
clock-names = "xclk";
AVDD-supply = <®_dldo3>;
DOVDD-supply = <®_aldo1>;
DVDD-supply = <®_eldo3>;
reset-gpios = <&pio 4 14 GPIO_ACTIVE_LOW>; /* PE14 */
powerdown-gpios = <&pio 4 15 GPIO_ACTIVE_HIGH>; /* PE15
*/
port {
ov5640_ep: endpoint {
remote-endpoint = <&csi_ep>;
bus-width = <8>;
hsync-active = <1>; /* Active high */
vsync-active = <0>; /* Active low */
data-active = <1>; /* Active high */
pclk-sample = <1>; /* Rising */
};
};
};
};
and
&csi {
status = "okay";
port {
csi_ep: endpoint {
remote-endpoint = <&ov5640_ep>;
bus-width = <8>;
hsync-active = <1>; /* Active high */
vsync-active = <0>; /* Active low */
data-active = <1>; /* Active high */
pclk-sample = <1>; /* Rising */
};
};
};
3- lsmod results:
Module Size Used by Not tainted
sr9700 20480 0
dm9601 20480 0
usbnet 40960 2 sr9700,dm9601
snd_soc_simple_card 24576 0
sun50i_codec_analog 32768 0
snd_soc_simple_card_utils 24576 1 snd_soc_simple_card
sun8i_codec 32768 0
sun8i_adda_pr_regmap 16384 1 sun50i_codec_analog
sun4i_i2s 24576 0
snd_soc_core 159744 5
snd_soc_simple_card,sun50i_codec_analog,snd_soc_simple_card_utils,sun8i_codec,sun4i_i2s
axp20x_adc 20480 0
snd_pcm_dmaengine 20480 1 snd_soc_core
axp20x_usb_power 16384 0
axp20x_ac_power 16384 0
axp20x_battery 16384 0
pinctrl_axp209 16384 2
industrialio 65536 4
axp20x_adc,axp20x_usb_power,axp20x_ac_power,axp20x_battery
snd_pcm 106496 4
sun8i_codec,sun4i_i2s,snd_soc_core,snd_pcm_dmaengine
i2c_mv64xxx 24576 0
sun6i_csi 36864 0
snd_timer 40960 1 snd_pcm
lima 57344 0
snd 65536 3 snd_soc_core,snd_pcm,snd_timer
gpu_sched 28672 1 lima
soundcore 16384 1 snd
pwm_sun4i 20480 1
sun8i_ce 28672 0
crypto_engine 20480 1 sun8i_ce
sun4i_drm 20480 1
sun8i_mixer 40960 0
ov5640 28672 0
v4l2_fwnode 24576 2 sun6i_csi,ov5640
panel_lvds 16384 0
sun4i_frontend 16384 1 sun4i_drm
pwm_bl 20480 0
sun4i_tcon 36864 1 sun4i_drm
sun8i_tcon_top 20480 2 sun4i_drm,sun4i_tcon
cpufreq_dt 20480 0
4- media-ctl --print-topology result:
Media controller API version 5.10.0
Media device information
------------------------
driver cedrus
model cedrus
serial
bus info platform:cedrus
hw revision 0x0
driver version 5.10.0
Device topology
- entity 1: cedrus-source (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video0
pad0: Source
-> "cedrus-proc":0 [ENABLED,IMMUTABLE]
- entity 3: cedrus-proc (2 pads, 2 links)
type Node subtype Unknown flags 0
pad0: Sink
<- "cedrus-source":0 [ENABLED,IMMUTABLE]
pad1: Source
-> "cedrus-sink":0 [ENABLED,IMMUTABLE]
- entity 6: cedrus-sink (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video0
pad0: Sink
<- "cedrus-proc":1 [ENABLED,IMMUTABLE]
But according to linux-sunxi.com/CSI page, driver name should be sun6i_csi.
Even if I disable the cedrus package on kernel and recompile, the result is
always the same.
As a result I did not get any images with the camera. How can I operate the
camera. Do you have any suggestions on this matter?
Thanks your timing.
Best Regards
Faruk KILAVUZ
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