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configs: bring up SDRAM early with negative driver_order - #3
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FMC pins now use driver_order=-9 and the SDRAM controller -8, so the external SDRAM heap starts right after dmclk (-10) instead of after the order-0 drivers, which otherwise exhaust DTCM first. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CV8sEDamRQuQ1KTge3vQDR
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In
stm32f746g-disco/sdram.ini, the FMC pin sections now usedriver_order=-9and the[sdram]controller uses-8. The external SDRAM heap therefore starts right after dmclk (-10), instead of after the drivers that use order 0. The examples inconfigs/README.mdanddocs/configuration.mdare updated to match.The pins stay strictly before the controller (-9 < -8), so the pins-before-FMC guarantee is kept.
Companion PRs: choco-technologies/dmclk, choco-technologies/dmgpio (same branch).
🤖 Generated with Claude Code
https://claude.ai/code/session_01CV8sEDamRQuQ1KTge3vQDR
Generated by Claude Code