Dear All,
/* Configure MMDC clocks for 396 MHz operation */DATA 4 0x020C4018 0x00260324
But when I get the clock dump I can see following (Please refer following clock dump)
gpu2d_core - 480000000
gpu2d_core_podf - 480000000
gpu2d_core_sel - 480000000
gpu2d_axi - 198000000
gpu3d_axi - 198000000
pcie_axi_sel - 198000000
vpu_axi_sel - 198000000
1) If the memory is running 396MHz don't we need to set above clock to 396MHz as well. (I need to use GPU,VPU with high load)
2) If I need to set above clocks to 396MHz how I can do it ? Do I need to do this in uboot in the same way I configure MMDC clock ?
I have attached clock dump here with.
Regards,
Peter.
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root@remotecockpit:~# cat /sys/kernel/debug/clk/clk_summary | grep mmdc
mmdc_ch1_axi 0 0 396000000 0 0
mmdc_ch0_axi 3 3 396000000 0 0
root@remotecockpit:~# cat /sys/kernel/debug/clk/clk_summary
clock enable_cnt prepare_cnt rate accuracy phase
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anaclk2 0 0 0 0 0
lvds2_in 0 0 0 0 0
anaclk1 0 0 0 0 0
lvds1_in 0 0 0 0 0
dummy 3 4 0 0 0
lvds2_sel 0 0 0 0 0
lvds2_gate 0 0 0 0 0
usbphy2_gate 1 1 0 0 0
usbphy1_gate 1 1 0 0 0
clk24m 0 0 24000000 0 0
osc 6 6 24000000 0 0
cko2_sel 0 0 24000000 0 0
cko2_podf 0 0 24000000 0 0
cko2 0 0 24000000 0 0
cko 0 0 24000000 0 0
gpt_3m 1 1 3000000 0 0
pll7_bypass_src 1 1 24000000 0 0
pll7 1 1 480000000 0 0
pll7_bypass 1 1 480000000 0 0
pll7_usb_host 1 1 480000000 0 0
usbphy2 1 1 480000000 0 0
pll6_bypass_src 1 1 24000000 0 0
pll6 1 1 500000000 0 0
pll6_bypass 1 1 500000000 0 0
pll6_enet 2 2 500000000 0 0
enet_ref 0 0 125000000 0 0
pcie_ref 1 1 125000000 0 0
pcie_ref_125m 1 1 125000000 0 0
sata_ref 1 1 100000000 0 0
sata_ref_100m 1 1 100000000 0 0
lvds1_sel 1 1 100000000 0 0
lvds1_gate 1 1 100000000 0 0
pll5_bypass_src 1 1 24000000 0 0
pll5 1 1 1188000000 0 0
pll5_bypass 1 1 1188000000 0 0
pll5_video 1 1 1188000000 0 0
pll5_post_div 1 1 297000000 0 0
pll5_video_div 1 1 74250000 0 0
ipu2_di1_pre_sel 0 0 74250000 0 0
ipu2_di1_pre 0 0 24750000 0 0
ipu2_di1_sel 0 0 24750000 0 0
ipu2_di1 0 0 24750000 0 0
ipu2_di0_pre_sel 1 1 74250000 0 0
ipu2_di0_pre 1 1 74250000 0 0
ipu2_di0_sel 1 1 74250000 0 0
ipu2_di0 1 1 74250000 0 0
ipu2_pclk0_sel 1 1 74250000 0 0
ipu2_pclk0_div 1 1 74250000 0 0
ipu2_pclk0 1 1 74250000 0 0
ipu1_di1_pre_sel 0 0 74250000 0 0
ipu1_di1_pre 0 0 24750000 0 0
ipu1_di1_sel 0 0 24750000 0 0
ipu1_di1 0 0 24750000 0 0
ldb_di1_sel 0 0 74250000 0 0
ldb_di1_div_7 0 0 10607142 0 0
ldb_di1_div_sel 0 0 10607142 0 0
ldb_di1 0 0 10607142 0 0
ldb_di1_div_3_5 0 0 21214285 0 0
ldb_di0_sel 0 0 74250000 0 0
ldb_di0_div_7 0 0 10607142 0 0
ldb_di0_div_sel 0 0 10607142 0 0
ldb_di0 0 0 10607142 0 0
ldb_di0_div_3_5 0 0 21214285 0 0
pll4_bypass_src 0 0 24000000 0 0
pll4 0 0 147456000 0 0
pll4_bypass 0 0 147456000 0 0
pll4_audio 0 0 147456000 0 0
pll4_post_div 0 0 36864000 0 0
pll4_audio_div 0 0 36864000 0 0
pll3_bypass_src 1 1 24000000 0 0
pll3 1 1 480000000 0 0
pll3_bypass 1 1 480000000 0 0
pll3_usb_otg 3 3 480000000 0 0
gpu2d_core_sel 0 0 480000000 0 0
gpu2d_core_podf 0 0 480000000 0 0
gpu2d_core 0 0 480000000 0 0
asrc_sel 0 0 480000000 0 0
asrc_pred 0 0 240000000 0 0
asrc_podf 0 0 30000000 0 0
asrc 0 0 30000000 0 0
esai_sel 0 0 480000000 0 0
esai_pred 0 0 240000000 0 0
esai_podf 0 0 30000000 0 0
esai_extal 0 0 30000000 0 0
periph2_clk2_sel 0 0 480000000 0 0
periph2_clk2 0 0 480000000 0 0
periph_clk2_sel 0 0 480000000 0 0
periph_clk2 0 0 480000000 0 0
pll3_60m 0 0 60000000 0 0
can_root 0 0 30000000 0 0
can2_serial 0 0 30000000 0 0
can1_serial 0 0 30000000 0 0
ecspi_root 0 0 60000000 0 0
ecspi5 0 0 60000000 0 0
ecspi4 0 0 60000000 0 0
ecspi3 0 0 60000000 0 0
ecspi2 0 0 60000000 0 0
ecspi1 0 0 60000000 0 0
pll3_80m 1 1 80000000 0 0
uart_serial_podf 1 1 80000000 0 0
uart_serial 1 2 80000000 0 0
pll3_120m 0 0 120000000 0 0
pll3_pfd3_454m 0 0 454736842 0 0
spdif_sel 0 0 454736842 0 0
spdif_pred 0 0 227368421 0 0
spdif_podf 0 0 28421053 0 0
spdif 0 0 28421053 0 0
pll3_pfd2_508m 0 0 508235294 0 0
ssi3_sel 0 0 508235294 0 0
ssi3_pred 0 0 127058824 0 0
ssi3_podf 0 0 63529412 0 0
ssi3 0 0 63529412 0 0
ssi2_sel 0 0 508235294 0 0
ssi2_pred 0 0 127058824 0 0
ssi2_podf 0 0 63529412 0 0
ssi2 0 0 63529412 0 0
ssi1_sel 0 0 508235294 0 0
ssi1_pred 0 0 127058824 0 0
ssi1_podf 0 0 63529412 0 0
ssi1 0 0 63529412 0 0
pll3_pfd1_540m 2 2 540000000 0 0
ipu1_di0_pre_sel 1 1 540000000 0 0
ipu1_di0_pre 1 1 108000000 0 0
ipu1_di0_sel 1 1 108000000 0 0
ipu1_di0 1 1 108000000 0 0
ipu1_pclk0_sel 1 1 108000000 0 0
ipu1_pclk0_div 1 1 27000000 0 0
ipu1_pclk0 1 1 27000000 0 0
hdmi_isfr 1 1 540000000 0 0
video_27m 0 0 27000000 0 0
pll3_pfd0_720m 0 0 720000000 0 0
usbphy1 0 0 480000000 0 0
pll2_bypass_src 1 1 24000000 0 0
pll2 1 1 528000000 0 0
pll2_bypass 1 1 528000000 0 0
pll2_bus 1 1 528000000 0 0
pll2_pfd2_396m 3 3 396000000 0 0
enfc_sel 0 0 396000000 0 0
enfc_pred 0 0 79200000 0 0
enfc_podf 0 0 19800000 0 0
enfc 0 0 19800000 0 0
gpmi_io 0 0 19800000 0 0
emi_sel 0 0 396000000 0 0
emi_podf 0 0 198000000 0 0
usdhc4_sel 0 0 396000000 0 0
usdhc4_podf 0 0 198000000 0 0
usdhc4 0 0 198000000 0 0
gpmi_bch 0 0 198000000 0 0
usdhc3_sel 0 0 396000000 0 0
usdhc3_podf 0 0 198000000 0 0
usdhc3 0 0 198000000 0 0
apbh_dma 0 0 198000000 0 0
per1_bch 0 0 198000000 0 0
gpmi_bch_apb 0 0 198000000 0 0
gpmi_apb 0 0 198000000 0 0
usdhc2_sel 0 0 396000000 0 0
usdhc2_podf 0 0 198000000 0 0
usdhc2 0 0 198000000 0 0
usdhc1_sel 0 0 396000000 0 0
usdhc1_podf 0 0 198000000 0 0
usdhc1 0 0 198000000 0 0
hsi_tx_sel 1 1 396000000 0 0
hsi_tx_podf 1 1 198000000 0 0
hsi_tx 1 1 198000000 0 0
axi_alt_sel 0 0 396000000 0 0
periph2_pre 0 0 396000000 0 0
periph2 0 0 396000000 0 0
mmdc_ch1_axi 0 0 396000000 0 0
periph_pre 1 1 396000000 0 0
periph 3 3 396000000 0 0
axi_sel 1 1 396000000 0 0
axi 3 3 198000000 0 0
openvg_axi 0 0 198000000 0 0
mlb 0 0 198000000 0 0
vpu_axi_sel 0 0 198000000 0 0
vpu_axi_podf 0 0 198000000 0 0
vpu_axi 0 0 198000000 0 0
vdo_axi_sel 0 0 198000000 0 0
vdo_axi 0 0 198000000 0 0
vdoa 0 0 198000000 0 0
emi_slow_sel 1 1 198000000 0 0
emi_slow_podf 1 1 99000000 0 0
eim_slow 1 1 99000000 0 0
pcie_axi_sel 1 1 198000000 0 0
pcie_axi 1 1 198000000 0 0
gpu3d_axi 0 0 198000000 0 0
gpu2d_axi 0 0 198000000 0 0
mmdc_ch0_axi 3 3 396000000 0 0
gpu3d_core_sel 0 0 396000000 0 0
gpu3d_core_podf 0 0 396000000 0 0
gpu3d_core 0 0 396000000 0 0
ipu2_sel 1 1 396000000 0 0
ipu2_podf 1 1 198000000 0 0
ipu2 1 1 198000000 0 0
ipu2_pclk1_sel 0 0 198000000 0 0
ipu2_pclk1_div 0 0 0 0 0
ipu2_pclk1 0 0 0 0 0
dcic2 0 0 198000000 0 0
ipu1_sel 1 1 396000000 0 0
ipu1_podf 1 1 198000000 0 0
ipu1 1 1 198000000 0 0
ipu1_pclk1_sel 0 0 198000000 0 0
ipu1_pclk1_div 0 0 0 0 0
ipu1_pclk1 0 0 0 0 0
dcic1 0 0 198000000 0 0
ahb 7 7 99000000 0 0
sdma 8 2 99000000 0 0
sata 0 0 99000000 0 0
rom 1 1 99000000 0 0
ocram 2 2 99000000 0 0
hdmi_iahb 1 1 99000000 0 0
esai_mem 0 0 99000000 0 0
esai_ipg 0 0 99000000 0 0
caam_aclk 1 1 99000000 0 0
caam_mem 1 1 99000000 0 0
asrc_mem 0 0 99000000 0 0
asrc_ipg 0 0 99000000 0 0
cko1_sel 0 0 99000000 0 0
cko1_podf 0 0 12375000 0 0
cko1 0 0 12375000 0 0
ipg 3 4 49500000 0 0
usboh3 0 0 49500000 0 0
uart_ipg 1 2 49500000 0 0
ssi3_ipg 0 0 49500000 0 0
ssi2_ipg 0 0 49500000 0 0
ssi1_ipg 0 1 49500000 0 0
spdif_gclk 0 0 49500000 0 0
spba 0 0 49500000 0 0
iim 0 0 49500000 0 0
gpt_ipg 1 1 49500000 0 0
enet 0 0 49500000 0 0
can2_ipg 0 0 49500000 0 0
can1_ipg 0 0 49500000 0 0
caam_ipg 1 1 49500000 0 0
ipg_per 0 0 49500000 0 0
pwm4 0 0 49500000 0 0
pwm3 0 0 49500000 0 0
pwm2 0 0 49500000 0 0
pwm1 0 0 49500000 0 0
i2c3 0 0 49500000 0 0
i2c2 0 0 49500000 0 0
i2c1 0 0 49500000 0 0
gpt_ipg_per 0 0 49500000 0 0
step 1 1 396000000 0 0
pll1_sw 1 1 396000000 0 0
arm 2 2 396000000 0 0
twd 1 1 198000000 0 0
pll2_198m 0 0 198000000 0 0
pll2_pfd1_594m 0 0 594000000 0 0
gpu3d_shader_sel 0 0 594000000 0 0
gpu3d_shader 0 0 594000000 0 0
pll2_pfd0_352m 0 0 352000000 0 0
pll1_bypass_src 0 0 24000000 0 0
pll1_bypass 0 0 24000000 0 0
pll1_sys 0 0 24000000 0 0
pll1 0 0 996000000 0 0
ckih1 0 0 0 0 0
ckil 0 0 32768 0 0
Hi Peter
one can look at i.MX6SDL software (memory is running 400MHz), use
"imx6solosabresd" configuration and sect.5.1 Build configurations attached Yocto
Guide. In general, if the memory is running 396MHz there is no need to set GPU,VPU
clock to 396MHz.
Best regards
igor
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Hi igorpadykov
Why it show following as 198MHz in above clock dump ?
gpu2d_axi - 198000000
gpu3d_axi - 198000000
pcie_axi_sel - 198000000
vpu_axi_sel - 198000000
Shouldn't it be 396MHz ?
Regards,
Peter
Hi igorpadykov
Can't we lover DDR frequency than 396MHz?
Normally I add following line to uboot to run DDR in 396MHz. Can't we lover this frequency in uboot ?
Regards,
Peter.
Hi Peter
you can do that in similar manner as linux busfreq driver:
jump to iram, reconfigure ddr frequency, then jump to ddr again.
Seems you should write custom codes for that procedure.
Best regards
igor