Hi,
How can we configure VPU G2 frequency as 660MHz?
Leslie
Hi,
How can we configure VPU G2 frequency as 660MHz?
Leslie
Hi Yuri,
We modified assigned-clock-rates to 660000000 as the following in red but it does not work. We are also sure the voltage is 1.0v. Do you know what else we might miss?
vpu: vpu@38300000 { compatible = "nxp,imx8mq-hantro"; reg = <0x0 0x38300000 0x0 0x200000>; reg-names = "regs_hantro"; interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "irq_hantro_g1", "irq_hantro_g2"; clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>, <&clk IMX8MQ_CLK_VPU_G2_ROOT>, <&clk IMX8MQ_CLK_VPU_DEC_ROOT>; clock-names = "clk_hantro_g1", "clk_hantro_g2", "clk_hantro_bus"; assigned-clocks = <&clk IMX8MQ_CLK_VPU_G1_SRC>, <&clk IMX8MQ_CLK_VPU_G2_SRC>, <&clk IMX8MQ_CLK_VPU_BUS_SRC>; assigned-clock-parents = <&clk IMX8MQ_VPU_PLL_OUT>, <&clk IMX8MQ_VPU_PLL_OUT>, <&clk IMX8MQ_SYS1_PLL_800M>; assigned-clock-rates = <600000000>, <660000000>, <800000000>; power-domains = <&vpu_pd>; regulator-supply = <&sw1c_reg>; status = "disabled"; };Hello,
please try
assigned-clock-rates = <660000000>, <660000000>, <800000000>;
Regards,
Yuri.
We tried accordingly but it still does not work.
fsl-imx8mq.dtsi
vpu: vpu@38300000 {
compatible = "nxp,imx8mq-hantro";
reg = <0x0 0x38300000 0x0 0x200000>;
reg-names = "regs_hantro";
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "irq_hantro_g1", "irq_hantro_g2";
clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>, <&clk IMX8MQ_CLK_VPU_G2_ROOT>, <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;
clock-names = "clk_hantro_g1", "clk_hantro_g2", "clk_hantro_bus";
assigned-clocks = <&clk IMX8MQ_CLK_VPU_G1_SRC>, <&clk IMX8MQ_CLK_VPU_G2_SRC>, <&clk IMX8MQ_CLK_VPU_BUS_SRC>;
assigned-clock-parents = <&clk IMX8MQ_VPU_PLL_OUT>, <&clk IMX8MQ_VPU_PLL_OUT>, <&clk IMX8MQ_SYS1_PLL_800M>;
assigned-clock-rates = <660000000>, <660000000>, <800000000>;
power-domains = <&vpu_pd>;
regulator-supply = <&sw1c_reg>;
status = "disabled";
};
cat /sys/kernel/debug/clk/clk_summary | grep -i vpu :
vpu_pll_ref_sel 0 0 25000000 0 0
vpu_pll_ref_div 0 0 5000000 0 0
vpu_pll 0 0 600000000 0 0
vpu_pll_bypass 0 0 600000000 0 0
vpu_pll_out 0 0 600000000 0 0
vpu_g2_src 0 0 600000000 0 0
vpu_g2_cg 0 0 600000000 0 0
vpu_g2_pre_div 0 0 600000000 0 0
vpu_g2_div 0 0 600000000 0 0
vpu_g2_root_clk 0 0 600000000 0 0
vpu_g1_src 0 0 600000000 0 0
vpu_g1_cg 0 0 600000000 0 0
vpu_g1_pre_div 0 0 600000000 0 0
vpu_g1_div 0 0 600000000 0 0
vpu_g1_root_clk 0 0 600000000 0 0
Hello,
Do You use the recent NXP Linux BSP?
Regards,
Yuri.
Hello,
Customers can try changing the Device Tree configuration on own risk.
fsl-imx8mq.dtsi\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel
Have a great day,
Yuri
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