The Qualcomm 's' series chipsets (SM8635, SM8735) were missing from the QNN backend despite having compatible Hexagon HTP hardware supported by the QNN SDK.

Changes

• qc_compiler_spec.fbs — Add SM8635 = 68 and SM8735 = 85 to QcomChipset enum
• qc_schema.py — Add both chips to QcomChipset IntEnum and _soc_info_table:
  • SM8635: SoC Model 68, V73 arch, 8MB VTCM (same arch as SM8550)
  • SM8735: SoC Model 85, V79 arch, 8MB VTCM (same arch as SM8750)
• utils.py — Update get_soc_to_htp_arch_map(), get_soc_to_chipset_map(), and the compiler spec docstring
• README.md — Replace the incorrect note "chipset IDs are not accessible to community users" with a pointer to the QNN SDK's "Supported Snapdragon Devices" table where SoC model integers are documented

SoC model IDs verified from QNN_SOC_MODEL_SM8635 / QNN_SOC_MODEL_SM8735 constants in the QNN SDK's QnnTypes.h.

Test plan

Validated that QcomChipset.SM8635 and QcomChipset.SM8735 resolve correctly with the expected HTP arch and VTCM values, and that _soc_info_table lookups succeed:

from backends.qualcomm.serialization.qc_schema import QcomChipset, _soc_info_table, HtpArch

assert QcomChipset.SM8635.value == 68
assert QcomChipset.SM8735.value == 85
assert _soc_info_table[QcomChipset.SM8635].htp_info.htp_arch == HtpArch.V73
assert _soc_info_table[QcomChipset.SM8735].htp_info.htp_arch == HtpArch.V79

Check quic/ai-hub-models

try:
url = 'REDACTED'
r = urllib.request.urlopen(url, timeout=10)
content = r.read().decode()
for line i e/backends/ir/IrBackend.h e/ba�� e/backends/QnnProfiler.h e/backends/QnnContextCommon.h e/backends/htp/HtpDevicePlatformInfoConfig.h e/backends/htp/Hgrep e/backends/htp/H-n e/backends/htp/HSM8|Snapdragon|soc_model e/backends/htp/H/home/REDACTED/.local/lib/python3.12/site-packages/qai_hub/client.py e/ba�� e/backends/htp/HtpGraph.h e/backends/htp/HtpContext.h stable-x86_64-REDACTED-linux-gnu/bin/rustc committer.email` (http block)

• softwarecenter.qualcomm.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)
  • Triggering command: `/usr/bin/python3 python3 -c

Let's look at QNN examples in the AI Engine Direct SDK for newer chip refs

import urllib.request
try:
r = urllib.request.urlopen('REDACTED` (dns block)

• Triggering command: `/usr/bin/python3 python3 -c
  import urllib.request

Look for newer versions of QAIRT documentation

for version in ['2.26', '2.27', '2.28', '2.29', '2.30', '2.31', '2.32', '2.33', '2.34', '2.35']:
url = f'REDACTED` (dns block)

• web.archive.org
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)
• webcache.googleusercontent.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)
• www.notebookcheck.net
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)
• www.qualcomm.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)