专栏总目录
本文介绍RK3588平台的Camera:MIPI-CSI调试之通路解析
【资料图】
MIPI联盟,即移动产业【yè】处【chù】理器接口(Mobile Industry Processor Interface 简称MIPI)联【lián】盟。MIPI(移【yí】动【dòng】产业处理【lǐ】器接【jiē】口)是MIPI联盟发起的为【wéi】移【yí】动应用处理【lǐ】器制定的【de】开放标准和一【yī】个规范。
目的是把手机内部的接口如摄像头、显示屏接口、射频/基带接【jiē】口【kǒu】等标准【zhǔn】化,从而减少手【shǒu】机设计的复杂程度和【hé】增加设计灵活性。
CSI & DSI
• CSI ( Camera Serial Interface ):摄【shè】像头接口
• DSI ( Display Serial Interface ):显【xiǎn】示【shì】接口
下【xià】图是RK3588 camera连接链路示意图,可以【yǐ】支【zhī】持7路camera。
图中:mipi camera2---> csi2_dphy1 ---> mipi2_csi2 ---> rkcif_mipi_lvds2--->rkcif_mipi_lvds2_sditf --->rkisp0_vir2
对【duì】应节点:imx415 ---> csi2_dphy0 ---> mipi2_csi2 ---> rkcif_mipi_lvds2--->rkcif_mipi_lvds2_sditf --->rkisp0_vir2
链接关系:sensor---> csi2 dphy---->mipi csi host--->vicap
实线【xiàn】链路解析: Camera sensor ---> dphy ---> 通【tōng】过mipi_csi2模【mó】块解析mipi协议---> vicap ( rkcif节【jiē】点代表vicap )
虚线【xiàn】链【liàn】路解析:vicap ---> rkcif_mipi_lvds2_sditf ---> isp
每个【gè】vicap节【jiē】点与isp的链接关【guān】系,通过对【duì】应虚拟出的XXX_sditf来指明链接关系。
当使用dphy0_hw:
full mode:节点名称使用csi2_dphy0,最多支持4 lane。当【dāng】dphy0_hw使用【yòng】full mode时,链【liàn】路需要【yào】按照csi2_dphy1这条链路【lù】来配置,但是节点名称csi2_dphy1需要修改为csi2_dphy0,软件上【shàng】是通【tōng】过【guò】phy的序号【hào】来【lái】区分phy使用的模式。split mode:拆分成2个phy使用,分别为csi2_dphy1(使用0/1 lane)、csi2_dphy2(使用2/3 lane),每个phy最【zuì】多支【zhī】持2 lane。当使用dphy1_hw:
full mode:节点名称使用csi2_dphy3,最多支持4 lane。当【dāng】dphy1_hw使用full mode时,链【liàn】路【lù】需要按照csi2_dphy4这条链路【lù】来配置,但是节点名称csi2_dphy4需要修改为【wéi】csi2_dphy3,软件上是【shì】通过phy的【de】序号来区分phy使用的【de】模式。split mode:拆分成2个phy使用【yòng】,分别为csi2_dphy4(使【shǐ】用【yòng】0/1 lane)、csi2_dphy5(使用2/3 lane),每个phy最多支持2 lane。dcphy:rk3588支持【chí】两个dcphy,节点名称分别为【wéi】csi2_dcphy0/csi2_dcphy1。每个dcphy硬件支【zhī】持RX/TX同时使【shǐ】用,对【duì】于【yú】camera输入使用的是RX。支持DPHY/CPHY协议复用;需要注意【yì】的是同一个dcphy的TX/RX只能【néng】同时使用【yòng】DPHY或同【tóng】时使【shǐ】用CPHY。其他【tā】dcphy参数请查阅rk3588数据【jù】手册【cè】。
使用上述mipi phy节点,需要【yào】把【bǎ】对应的物【wù】理节点配置上【shàng】。(csi2_dcphy0_hw/csi2_dcphy1_hw/csi2_dphy0_hw/csi2_dphy1_hw)
每个mipi phy都需要一个【gè】csi2模块来解析mipi协议,节点【diǎn】名称分别为【wéi】mipi0_csi2~mipi5_csi2。
rk3588所有camera数【shù】据都需要通过【guò】vicap,再链接到isp。rk3588仅支持一个vicap硬件,这个vicap支持【chí】同时【shí】输入6路mipi phy,及一路dvp数据,所【suǒ】以我们将vicap分【fèn】化成rkcif_mipi_lvds~rkcif_mipi_lvds5、rkcif_dvp等7个节【jiē】点,各个节【jiē】点的绑定关系需要【yào】严【yán】格按照框图【tú】的节点序【xù】号【hào】配置。
每个【gè】vicap节点与【yǔ】isp的链【liàn】接关系,通过对应【yīng】虚拟出的XXX_sditf来【lái】指明链接关系。
rk3588支持2个isp硬件,每【měi】个isp设备可虚拟【nǐ】出多【duō】个虚拟节点,软件上通过回【huí】读【dú】的方式,依次从【cóng】ddr读【dú】取每一路的图像【xiàng】数【shù】据进【jìn】isp处理。对于【yú】多摄方案,建议将【jiāng】数【shù】据【jù】流平均分配到两个isp上。
直通【tōng】与回【huí】读模式:•直通:指数据经【jīng】过vicap采【cǎi】集,直【zhí】接发送【sòng】给【gěi】isp处【chù】理【lǐ】,不存储到ddr。需要【yào】注意的是hdr直通时,只有短帧是【shì】真正的直通,长帧需要存在ddr,isp再从【cóng】ddr读取【qǔ】。
•回读:指数据经过vicap采集到【dào】ddr,应【yīng】用获【huò】取到【dào】数【shù】据后,将buffer地址推送给isp,isp再从ddr获取图【tú】像【xiàng】数据。
•在dts配【pèi】置时,一个isp硬件,如果只配置一个虚【xū】拟【nǐ】节点,默认使用直通模【mó】式【shì】,如果配置了多【duō】个虚拟【nǐ】节点默认【rèn】使用回读模式【shì】。
&i2c3 {status = "okay";imx415: imx415@1a {status = "okay";compatible = "sony,imx415";reg = < 0x1a >;clocks = < &cru CLK_MIPI_CAMARAOUT_M3 >;clock-names = "xvclk";pinctrl-names = "default";pinctrl-0 = < &mipim0_camera3_clk >;power-domains = < &power RK3588_PD_VI >;pwdn-gpios = < &gpio1 RK_PB0 GPIO_ACTIVE_HIGH >;reset-gpios = < &gpio4 RK_PA0 GPIO_ACTIVE_LOW >;rockchip,camera-module-index = < 0 >;rockchip,camera-module-facing = "back";rockchip,camera-module-name = "CMK-OT2022-PX1";rockchip,camera-module-lens-name = "IR0147-50IRC-8M-F20";port {imx415_out0: endpoint {remote-endpoint = < &mipidphy0_in_ucam0 >;data-lanes = < 1 2 3 4 >;};};};camera_imx219: camera-imx219@10 {status = "disabled";compatible = "sony,imx219";reg = < 0x10 >;clocks = < &clk_cam_24m >;clock-names = "xvclk";rockchip,camera-module-index = < 0 >;rockchip,camera-module-facing = "back";rockchip,camera-module-name = "rpi-camera-v2";rockchip,camera-module-lens-name = "default";port {imx219_out0: endpoint {remote-endpoint = < &mipidphy0_in_ucam1 >;data-lanes = < 1 2 >;};};};};&csi2_dphy0_hw {status = "okay";};&csi2_dphy0 {status = "okay";ports {#address-cells = < 1 >;#size-cells = < 0 >;port@0 {reg = < 0 >;#address-cells = < 1 >;#size-cells = < 0 >;mipidphy0_in_ucam0: endpoint@1 {reg = < 1 >;remote-endpoint = < &imx415_out0 >;data-lanes = < 1 2 3 4 >;};mipidphy0_in_ucam1: endpoint@2 {reg = < 2 >;remote-endpoint = < &imx219_out0 >;data-lanes = < 1 2 >;};};port@1 {reg = < 1 >;#address-cells = < 1 >;#size-cells = < 0 >;csidphy0_out: endpoint@0 {reg = < 0 >;remote-endpoint = < &mipi2_csi2_input >;};};};};&mipi2_csi2 {status = "okay";ports {#address-cells = < 1 >;#size-cells = < 0 >;port@0 {reg = < 0 >;#address-cells = < 1 >;#size-cells = < 0 >;mipi2_csi2_input: endpoint@1 {reg = < 1 >;remote-endpoint = < &csidphy0_out >;};};port@1 {reg = < 1 >;#address-cells = < 1 >;#size-cells = < 0 >;mipi2_csi2_output: endpoint@0 {reg = < 0 >;remote-endpoint = < &cif_mipi2_in0 >;};};};};&rkcif {status = "okay";};&rkcif_mipi_lvds2 {status = "okay";port {cif_mipi2_in0: endpoint {remote-endpoint = < &mipi2_csi2_output >;};};};&rkcif_mipi_lvds2_sditf {status = "okay";port {mipi_lvds2_sditf: endpoint {remote-endpoint = < &isp0_vir0 >;};};};&rkcif_mmu {status = "okay";};&rkisp0 {status = "okay";};&isp0_mmu {status = "okay";};&rkisp0_vir0 {status = "okay";port {#address-cells = < 1 >;#size-cells = < 0 >;isp0_vir0: endpoint@0 {reg = < 0 >;remote-endpoint = < &mipi_lvds2_sditf >;};};};&pinctrl {camera {cam_pwdn_gpio: cam-pwdn-gpio {rockchip,pins = < 1 RK_PB0 RK_FUNC_GPIO &pcfg_pull_up >;};};};
i2cdetect -y 3
gst-launch-1.0 v4l2src device=/dev/video11 ! video/x-raw,format=NV12,width=3840,height=2160, framerate=30/1 ! xvimagesink
Android系统:
Android系统自带【dài】相【xiàng】机APP。点击APP,看【kàn】摄像画面【miàn】是否正常【cháng】显示。
dmesg | grep imx415
media-ctl -d /dev/media0 -p
审核编辑:汤梓红