Clock setting for i.MX6QP in linux kernel source.

takayuki_ishii — Tue, 19 Nov 2019 02:40:56 GMT

Hello community,

In linux kernel source, clock are setting in function "imx6q_clocks_init()" on drivers/clk/imx/clk-imx6q.c

of Linux BSP L4.14.98_2.0.0-ga.

As following commit, it is changed to support imx6qp.

2016-02-14

After that, to support 720MHz setting for GPU3D clock and 396MHz VPU clock setting for 1.2GHz imx6qp.

2019-02-12

2019-02-12

But "if" statement for these clock setting, it is never called.

Because function "clk_on_imx6q()" return false by "imx6qp-sabrest.dtb" or "imx6qp-sabreauto.dtb".

It will set board statement to

{  model = "Freescale i.MX6 Quad Plus SABRE Automotive Board";  compatible = "fsl,imx6qp-sabreauto", "fsl,imx6qp"; };

Is it OK to use this code for iMX6QP 1GHz/800MHz grade device without fix this problem?

Best regards,

Ishii.

Re: Clock setting for i.MX6QP in linux kernel source.

jimmychan — Wed, 20 Nov 2019 08:19:23 GMT