[Public] > -----Original Message----- > From: Alexander Koskovich <AKoskovich@xxxxxxxxxxxxxx> > Sent: Tuesday, January 9, 2024 6:01 PM > To: Deucher, Alexander <Alexander.Deucher@xxxxxxx> > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > Subject: RE: Documentation for RGB strip on RX 7900 XTX (Reference) > > I initially tried reaching out to the Coolermaster technical email, but I got no > response. Is there a better contact for something like this? > I'm not really sure. That sounds like a good start. It may work similarly to other CoolerMaster designs in openRGB. Alex > > > On Tuesday, January 9th, 2024 at 5:58 PM, Deucher, Alexander > <Alexander.Deucher@xxxxxxx> wrote: > > > > > > > > [Public] > > > > > -----Original Message----- > > > From: amd-gfx amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx On Behalf Of > > > Deucher, Alexander > > > Sent: Tuesday, January 9, 2024 5:29 PM > > > To: Alexander Koskovich AKoskovich@xxxxxxxxxxxxxx > > > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > > Subject: RE: Documentation for RGB strip on RX 7900 XTX (Reference) > > > > > > > -----Original Message----- > > > > From: Alexander Koskovich AKoskovich@xxxxxxxxxxxxxx > > > > Sent: Tuesday, January 9, 2024 4:59 PM > > > > To: Deucher, Alexander Alexander.Deucher@xxxxxxx > > > > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > > > Subject: RE: Documentation for RGB strip on RX 7900 XTX > > > > (Reference) > > > > > > > > Is the AIB/OEM for this board not AMD? > > > > https://www.amd.com/en/products/graphics/amd-radeon-rx-7900xtx > > > > > > I'll double check (we usually don't produce reference boards with > > > RGB), but my understanding is that if any of the boards available > > > for sale on amd.com has RGB controls, the RGB control is provided by a > third party vendor. > > > > > > > > CoolerMaster provides the RGB solution. See: > > https://www.amd.com/en/support/graphics/amd-radeon-rx-7000- > series/amd- > > radeon-rx-7900-series/amd-radeon-rx-7900xtx > > > > Alex > > > > > Alex > > > > > > > On Tuesday, January 9th, 2024 at 4:53 PM, Deucher, Alexander > > > > Alexander.Deucher@xxxxxxx wrote: > > > > > > > > > [AMD Official Use Only - General] > > > > > > > > > > > -----Original Message----- > > > > > > From: Alexander Koskovich AKoskovich@xxxxxxxxxxxxxx > > > > > > Sent: Tuesday, January 9, 2024 3:27 PM > > > > > > To: Deucher, Alexander Alexander.Deucher@xxxxxxx > > > > > > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > > > > > Subject: RE: Documentation for RGB strip on RX 7900 XTX > > > > > > (Reference) > > > > > > > > > > > > Doe AMD have documentation on the i2c data that gets sent > > > > > > currently though? I was hoping to figure out what you need to > > > > > > change in the command that gets sent to change stuff like > > > > > > brightness, color (red, green, blue), rainbow, morse code, etc. > > > > > > > > > > It depends on the LED controller used by the AIB/OEM. The > > > > > programming sequence is dependent on the LED controller. > > > > > > > > > > Alex > > > > > > > > > > > On Tuesday, January 9th, 2024 at 10:10 AM, Deucher, Alexander > > > > > > Alexander.Deucher@xxxxxxx wrote: > > > > > > > > > > > > > [Public] > > > > > > > > > > > > > > > -----Original Message----- > > > > > > > > From: Alexander Koskovich AKoskovich@xxxxxxxxxxxxxx > > > > > > > > Sent: Monday, January 8, 2024 7:22 PM > > > > > > > > To: Deucher, Alexander Alexander.Deucher@xxxxxxx > > > > > > > > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > > > > > > > Subject: RE: Documentation for RGB strip on RX 7900 XTX > > > > > > > > (Reference) > > > > > > > > > > > > > > > > Currently the reference cooler from AMD does not have an > > > > > > > > existing RGB controller for OpenRGB, that's why I was > > > > > > > > looking for documentation on the I2C commands to send to > > > > > > > > the second SMU, so I don't risk bricking my card by > > > > > > > > sending wrong commands during development somehow. > > > > > > > > > > > > > > > > writeSetCMDWithData: > > > > > > > > ************************************************************** > > > > > > > > > > > > adli2c.iSize = sizeof(ADLI2C) adli2c.iAction = > > > > > > > > ADL_DL_I2C_ACTIONWRITE adli2c.iAddress = 0xb4 > > > > > > > > adli2c.iSpeed = 100 > > > > > > > > 0 -------------------------------------------------- > > > > > > > > Dev 0: ADL_Display_WriteAndReadSMUI2C(0, &adli2c) = 0 > > > > > > > > adli2c.iDataSize = > > > > > > > > 24 i2cData[0]~[24] > > > > > > > > 40 51 2c 01 00 00 ff 00 ff ff ff cc 00 cc 00 00 00 ff ff > > > > > > > > ff ff ff ff ff > > > > > > > > > > > > > > > > From the RGB app's logs this is an example of what the > > > > > > > > official AMD application on Windows is sending when it > > > > > > > > changes colors on the RGB strip. > > > > > > > > > > > > > > > > From this can it be assumed the AMD card is using the > > > > > > > > latter method you mentioned with the second SMU I2C bus, > > > > > > > > in which case no driver changes would be needed? > > > > > > > > > > > > > > IIRC, each AIB/OEM uses its own preferred RGB controller. > > > > > > > The reference board just defines which i2c buses can be > > > > > > > used. The RGB control application is just a userspace app > > > > > > > provided by the AIB/OEM that calls ADL to talk to whichever > > > > > > > i2c bus the vendor put their RGB controller on. On Linux you > > > > > > > can do something similar using the i2c_dev module to open a > > > > > > > connection to the i2c bus driver provided by the kernel. I > > > > > > > believe that is what openRGB does today. > > > > > > > It looks like you already have the programming sequence above. > > > > > > > > > > > > > > Alex > > > > > > > > > > > > > > > On Monday, January 8th, 2024 at 5:32 PM, Deucher, > > > > > > > > Alexander Alexander.Deucher@xxxxxxx wrote: > > > > > > > > > > > > > > > > > [Public] > > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > > > > > > > From: amd-gfx amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx On > > > > > > > > > > Behalf Of Alexander Koskovich > > > > > > > > > > Sent: Sunday, January 7, 2024 11:19 PM > > > > > > > > > > To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > > > > > > > > > Subject: Documentation for RGB strip on RX 7900 XTX > > > > > > > > > > (Reference) > > > > > > > > > > > > > > > > > > > > Hello, > > > > > > > > > > > > > > > > > > > > I was wondering if AMD would be able provide any > > > > > > > > > > documentation for the RGB strip on the reference > > > > > > > > > > cooler > > > > > > > > > > (https://www.amd.com/en/products/graphics/amd-radeon-r > > > > > > > > > > x- > > > > > > > > > > 7900xtx)? > > > > > > > > > > It > > > > > > > > > > looks to be handled via I2C commands to the SMU, but > > > > > > > > > > having proper documentation would be extremely helpful. > > > > > > > > > > > > > > > > > > It depends on the AIB/OEM and how they designed the > > > > > > > > > specific board. The RGB controller will either be > > > > > > > > > attached to the DDCVGA i2c bus on the display hardware > > > > > > > > > or the second SMU i2c bus. The former will require > > > > > > > > > changes to the amdgpu display code to register display > > > > > > > > > i2c buses that are not used by the display connectors on > > > > > > > > > the board so they can be used by 3rd party applications. > > > > > > > > > Currently we only register i2c buses used for display connectors. > > > > > > > > > The latter buses are already registered with the i2c > > > > > > > > > subsystem since they are used for other things like > > > > > > > > > EEPROMs on server and workstation cards and should be > > > > > > > > > available via standard Linux i2c APIs. I'm not sure what > > > > > > > > > i2c LED controllers each AIB vendor uses off hand. > > > > > > > > > https://openrgb.org/index.html would probably be a good > > > > > > > > > resource for that information. > > > > > > > > > > > > > > > > > > Alex
