Hi,everyone:
I am now developing a project with imx8mm,the bsp version is 4.14.98. My mipi camera sensor needs 50m MCLK,
so I change the value in fsl-imx8mm-evk.dts like the following,but it doesn't work.Is there anything else I need to change?
snappy_mipi: snappy_mipi@3c {
compatible = "ovti,snappy_mipi";
reg = <0x3c>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_csi_pwn>, <&pinctrl_csi_rst>;
clocks = <&clk IMX8MM_CLK_CLKO1_DIV>;
clock-names = "csi_mclk";
assigned-clocks = <&clk IMX8MM_CLK_CLKO1_SRC>,
<&clk IMX8MM_CLK_CLKO1_DIV>;
assigned-clock-parents = <&clk IMX8MM_CLK_24M>;
assigned-clock-rates = <0>, <50000000>;
csi_id = <0>;
pwn-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
mclk = <50000000>;
mclk_source = <0>;
port {
ov5640_mipi1_ep: endpoint {
remote-endpoint = <&mipi1_sensor_ep>;
};
};
};
Hi songrui2008@126.com
using IMX8MM_CLK_24M [24MHz] as parent seems it is not possible to derive
from it 50MHz, assigned-clock-rates = <0>, <50000000>;
One can try other clock sources in clk driver, imx8mm_clko1_sels[]
clk-imx8mm.c\imx\clk\drivers - linux-imx - i.MX Linux kernel
some examples can be found in https://community.nxp.com/thread/518949
Best regards
igor
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Dear igorpadykov:
Thank you for your reply,I'll try it now.