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X-MS-Exchange-CrossPremises-SCL: 1 X-MS-Exchange-CrossPremises-Processed-By-Journaling: Journal Agent X-OrganizationHeadersPreserved: DU0P192MB1596.EURP192.PROD.OUTLOOK.COM X-Proofpoint-ORIG-GUID: oln3Qo6_FCEo8O6AyDV9ZQVoFHUn-MCU X-Proofpoint-GUID: oln3Qo6_FCEo8O6AyDV9ZQVoFHUn-MCU X-Authority-Analysis: v=2.4 cv=LINmQIW9 c=1 sm=1 tr=0 ts=6821b6b2 cx=c_pps a=D21qXYjmxBfra4Dx/gklFw==:117 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=dt9VzEwgFbYA:10 a=8gLI3H-aZtYA:10 a=VUIrYGzTNGiYhJFzIU8A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEyMDA5MyBTYWx0ZWRfX72SSdpLTvyr4 qS6vJ7QSD/KOo666RfA6+GBvy0O9Viy7je/jb7lERzcY9W7ZMrKzVSuvIDm6SnfYIFfyd3Llmpm uPJ6oIUZJvdAqCjEOw5FoCUXRv1Tt9Elu0+BHIIEsEXuLDiJz6swb21fx6LqtPXfghUbq6p9eye XbNrGvAeyOv0iUx6VfQW/2NDaDU1zFK/6zs1uOKtGDZipOCoqnABUFhYG9jLdYMg8ggYyu582PV +Us9fISAlXxgsHzBJNsD+5csCyW1iB1cZev1Sc1z4Evom/JuDG0eBDElkOz5D4vouwgfnB6BSmS 6Et0Sv5F38ZwGdog9A0rtDuxES0N5kU5LOfY5uHqWLIjYUY5y9+pOfNcGE0hb9BPpx1kHA/yGGd v6GWWUlShI0XMPQdF3M0LhT2cboZN5l8K1Mm2kD7E0tNv9SnqXQ7KzKETWhiOuk0CjbOTUZm Am Fri, May 09, 2025 at 03:49:55PM +0200 schrieb Sebastian Gottschall: > > Am 09.05.2025 um 13:59 schrieb Alexander Wilhelm: > > Am Fri, May 09, 2025 at 12:54:47PM +0200 schrieb Sebastian Gottschall: > > > Am 09.05.2025 um 10:43 schrieb Alexander Wilhelm: > > > > Hello devs, > > > > > > > > I'd like to understand how TX power setting works on ath11k devices. For example > > > > when I'm using channel 36 for ETSI based regulatory domain, I can set up to 23 > > > > dBm. But then I get only 20 dBm as a result. On different channels and/or > > > > regulatory domains I get different reductions. I tried to follow the source > > > > code. As far as I understood is that 'ath11k_mac_txpower_recalc' sets the > > > > correct values and 'ath11k_mac_op_get_txpower' return the different one. > > > > > > > > My question is where this reduction offset is encoded. Is it in the module's > > > > firmware or is it part of the boardfile? Thank you in advance. > > > > > > > > > > > > Best regards > > > > Alexander Wilhelm > > > the boardfile contains chipset specific calibration data which also defines > > > the hardware power limits (more specific data also included in the on board > > > calibration flash of the device or if its a router, in flash memory of the > > > router itself. in addition it includes a regulatory database which is used > > > by the firmware for managing the total power. you have also to consider that > > > the 23dbm are specified without antenna gain. > > > so if the antenna gain is 3 dbm, you get 20 dbm in total. this antenna gain > > > may again be specified in the boardfile. > > > so you will not find your answers in any sourcecode. its all encoded in > > > binary data. > > > > > > Sebastian > > > > > Alright, thank you Sebastian. Since I'm not using any calibration data on my > > router/AP device, all data come from the boardfile. I've also understood that > > the power limit reduction is related to antenna gain. I'll ask the radio module > > manufacturer to create another boardfile for me that matches the required > > antenna gain for my router/AP device. > my answer might be not accurate here. which chipset we are talking about for > ath11k? I'm using QCN9074 chipset. > > > > Best regards > > Alexander Wilhelm > >