Hi everyone,
I want to configure my scm qwks board to capture video from a ADV7281 Analog Devices dev board. I know I need to configure the imx6 to recognize this device. I am not sure where to start modifying the device trees for a mipi sensor. I have gone through many threads and the following debug checklist document.
https://community.nxp.com/docs/DOC-94312
First step is to check that GPIO/IOMUX settings are correct. What document must I reference to set these settings accordingly?
Thanks!
Hi Ali
iomux settings means IOMUXC_GPR1[MIPI_IPU_MUX]
also one can look at
https://ez.analog.com/thread/50046
https://community.nxp.com/message/314760#comment-314760
kernel mainline the driver already supports ADV7181 MIPI interface:
http://lxr.free-electrons.com/source/drivers/media/i2c/adv7180.c
Best regards
igor
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Hi Igor,
So I am at a point where I think I have everything configured. I am trying to configure VC2 to CSI0 in IPU2.
In imx6dql.dtsi the mipi/csi interface is defined.
mipi_csi: mipi_csi@021dc000 { /* MIPI-CSI */
compatible = "fsl,imx6q-mipi-csi2";
reg = <0x021dc000 0x4000>;
interrupts = <0 100 0x04>, <0 101 0x04>;
clocks = <&clks IMX6QDL_CLK_HSI_TX>,
<&clks IMX6QDL_CLK_EMI_SEL>,
<&clks IMX6QDL_CLK_VIDEO_27M>;
clock-names = "dphy_clk", "pixel_clk", "cfg_clk";
status = "disable";
};
In imx6dqscm_qwks_rev2.dts the mipi/csi is configured with IPU2(ipu_id = 1), CSI0(csi_id = 0), VC2 (v_channel=2) and 1 lane.
&mipi_csi {
status = "okay";
ipu_id = <1>;
csi_id = <0>;
v_channel = <2>;
lanes = <1>;
};
IPU2 is also defined and configured already in imx6qdl.dtsi. My issue is that when I read memory address 0x021dc004 (MIPI_CSI_N_LANES) I get 0x00000003, which means there are 4 active data lanes. After looking at the rest of the registers, everything is in reset. Any hints on why everything is in reset and/or what I have to configure to get it out of reset?