[edk2-devel] [PATCH v4 6/7] Platform/RaspberryPi: Power up SD, and tweak GPIOs
Jeremy Linton
jeremy.linton at arm.com
Tue Jan 5 16:34:19 UTC 2021
It seems we should be powering up the SD cards, and possibly
the clocks as well to assure they are setup properly before
we attempt to access the controller.
Signed-off-by: Jeremy Linton <jeremy.linton at arm.com>
Reviewed-by: Andrei Warkentin <awarkentin at vmware.com>
---
Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
index 28f57438c5..aa9ba7d76f 100644
--- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
+++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
@@ -552,6 +552,13 @@ ApplyVariables (
GpioPinFuncSet (37, GPIO_FSEL_ALT3);
GpioPinFuncSet (38, GPIO_FSEL_ALT3);
GpioPinFuncSet (39, GPIO_FSEL_ALT3);
+
+ Status = mFwProtocol->SetPowerState (RPI_MBOX_POWER_STATE_SDHCI,
+ TRUE, TRUE); //SD on with wait
+ Status = mFwProtocol->SetGpioConfig (RPI_EXP_GPIO_SD_VOLT,
+ RPI_EXP_GPIO_DIR_OUT, TRUE); //3.3v
+ Status = mFwProtocol->SetClockState (RPI_MBOX_CLOCK_RATE_EMMC2, TRUE);
+ Status = mFwProtocol->SetClockState (RPI_MBOX_CLOCK_RATE_EMMC, TRUE);
}
} else {
DEBUG ((DEBUG_ERROR, "Model Family %d not supported...\n", mModelFamily));
--
2.13.7
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