where can I configure GPU3D_SHADER_CLK_ROOT of i.mx6 DL ?
It is introduced in the Processor Reference Manual:
There are two main clocks for the processing control: shader clk for the shader part, and core clk for the remaining part. The core clk and shader clk frequency are programmable in CCM (as the clk frequency for GPU3D_CORE_CLK_ROOT, GPU3D_SHADER_CLK_ROOT).
In CCM_CBCMR one can configure gpu3d_core_clk_sel and gpu2d_core_clk_sel. I assume that gpu3d_core_clk_sel controls GPU3D_CORE_CLK_ROOT, right ? But I haven't found a proper register for GPU3D_SHADER_CLK_ROOT at all ?