Linux/TDA2P-ACD: DSP frequency to 1GHz

Igor Kolak

Prodigy 80 points

Part Number: TDA2P-ACD

Tool/software: Linux

Hi,

How can I raise DSP frequency to 1GHz?

Currently, when I run "omapconf show opp" this is the output.

| VDD_DSPEVE / VDD_CORE3 | 33C / 91F | NA | | PLUS |
| DSP1 | | | 850 MHz | |
| DSP2 | | | 850 MHz | |
| EVE1 | | | 900 MHz | |
| EVE2 | | | 900 MHz | |

In TRM it says that OPP_PLUS is supported and max frequency is 1GHz for DSP, but I have 850MHz.

Thanks in advance,

Igor

over 6 years ago

0 Yordan Kamenov over 6 years ago

TI__Mastermind 42515 points

Hi Igor,

please check this wiki:

Regards,

Yordan

0 Igor Kolak over 6 years ago in reply to Yordan Kamenov

Prodigy 80 points

Hi Yordan,

I already have. Can you please tell me the settings for OPP_PLUS

u32 dra76_opp_dsp_clk_rates[NUM_OPPS][OPP_DSP_CLK_NUM] = {

{}, /*OPP_LOW */

{600000000, 600000000, 400000000}, /* OPP_NOM */

{700000000, 700000000, 466666667}, /* OPP_OD */

{850000000, 850000000, 500000000}, /* OPP_HIGH */

{}, /*OPP_PLUS */

};

if file PROCESSOR_SDK_VISION_03_05_00_00/ti_components/os_tools/linux/u-boot/u-boot/arch/arm/cpu/armv7/omap5/fdt.c?

As I can move frequency to OPP_NOM/OD/HIGH but PLUS parameters are missing.

Thanks,

Igor

0 Nikhil Devshatwar over 6 years ago in reply to Igor Kolak

TI__Genius 9905 points

Hi,

According to latest data manual for DRA76x, OPP_PLUS is not supported for DSPEVE

http://www.ti.com/lit/ds/symlink/dra76p.pdf

Regards,

Nikhil D

0 Igor Kolak over 6 years ago in reply to Nikhil Devshatwar

Prodigy 80 points

Hi Nikhil,

I've referred to where it says it can be OPP_PLUS.

Can you please double check?

Thanks in advance,

Igor

0 Nikhil Devshatwar over 6 years ago in reply to Igor Kolak

TI__Genius 9905 points

Hi,

I missed that you were talking about tda2p-acd part number.

Yes, it does support OPP_PLUS.

You can apply following changes:

diff --git a/arch/arm/cpu/armv7/omap5/fdt.c b/arch/arm/cpu/armv7/omap5/fdt.c
index d74e982..5d1ddd0 100644
--- a/arch/arm/cpu/armv7/omap5/fdt.c
+++ b/arch/arm/cpu/armv7/omap5/fdt.c
@@ -300,7 +300,7 @@ u32 dra76_opp_dsp_clk_rates[NUM_OPPS][OPP_DSP_CLK_NUM] = {
{600000000, 600000000, 400000000}, /* OPP_NOM */
{700000000, 700000000, 466666667}, /* OPP_OD */
{850000000, 850000000, 500000000}, /* OPP_HIGH */
- {}, /*OPP_PLUS */
+ {1000000000, 1000000000, 666666666}, /*OPP_PLUS */
};

/* IVA voltage domain */

Regards,

Nikhil D

0 Igor Kolak over 6 years ago in reply to Nikhil Devshatwar

Prodigy 80 points

It worked. Thanks!

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Linux/TDA2P-ACD: DSP frequency to 1GHz