agross-korg commented on a change in pull request #2392:
URL: https://github.com/apache/mynewt-core/pull/2392#discussion_r508747207
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File path: hw/drivers/crypto/crypto_da1469x/src/crypto_da1469x.c
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@@ -73,7 +74,10 @@ do_dma_key_tx(const void *key, uint16_t keylen)
da1469x_otp_set_mode(OTPC_MODE_READ);
/* securely DMA hardware key from secret storage to QSPI decrypt engine */
- dma_regs->DMA_REQ_MUX_REG |= 0xf000;
+ OS_ENTER_CRITICAL(sr);
+ /* Use the secure channel #7 */
+ MCU_DMA_SET_MUX(7, MCU_DMA_PERIPH_NONE);
Review comment:
I think we should merge this change which fixes a known, serious issue.
Then we decide what to do for the other, which is an annoying problem that
impacts battery life.
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