From: "Jeremy Linton" <jeremy.linton@arm.com>
To: devel@edk2.groups.io
Cc: ard.biesheuvel@arm.com, leif@nuviainc.com, pete@akeo.ie,
andrey.warkentin@gmail.com, samer.el-haj-mahmoud@arm.com,
Jeremy Linton <jeremy.linton@arm.com>
Subject: [PATCH v2 6/9] Platform/RaspberryPi: Power up sd, and tweak GPIOs
Date: Tue, 15 Dec 2020 15:00:45 -0600 [thread overview]
Message-ID: <20201215210045.1195658-1-jeremy.linton@arm.com> (raw)
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@arm.com>
---
Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
index 28f57438c5..e55ed63efa 100644
--- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
+++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
@@ -552,6 +552,16 @@ ApplyVariables (
GpioPinFuncSet (37, GPIO_FSEL_ALT3);
GpioPinFuncSet (38, GPIO_FSEL_ALT3);
GpioPinFuncSet (39, GPIO_FSEL_ALT3);
+
+ /*
+ * power and clock everything by default
+ */
+ 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
next reply other threads:[~2020-12-15 21:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 21:00 Jeremy Linton [this message]
2021-01-04 16:08 ` [PATCH v2 6/9] Platform/RaspberryPi: Power up sd, and tweak GPIOs Jeremy Linton
2021-01-04 16:10 ` Ard Biesheuvel
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