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sdm32h7: enable sdmmc hardware flow control

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Hardware flow control prevents FIFO underruns/overruns
by stopping the bus clock if one would occur. This can
slow down transfers, but that's better than having data
transfer fail due to AXI/AHB bus contention.

Change-Id: I8696d3aff78c17dbbe85907160fa37fd4ee11e85
This commit is contained in:
Aidan MacDonald 2026-01-21 13:54:30 +00:00 • committed by Solomon Peachy
parent 5442622d88
commit a74ee4c04f
1 changed files with 1 additions and 1 deletions
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2
firmware/target/arm/stm32/sdmmc-stm32h7.c
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@ -121,7 +121,7 @@ void stm32h7_sdmmc_set_power_enabled(void *controller, bool enabled)
udelay(200);
/* Automatically stop clock when bus is not in use */
reg_writelf(ctl->regs, SDMMC_CLKCR, PWRSAV(1));
reg_writelf(ctl->regs, SDMMC_CLKCR, PWRSAV(1), HWFC_EN(1));
}
else
{