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* [PATCH v5 0/7] rpi4: Enable eMMC2 controller
@ 2021-01-08  6:14 Jeremy Linton
  2021-01-08  6:14 ` [PATCH v5 1/7] Platform/RaspberryPi: Update VPU mailbox constants Jeremy Linton
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: Jeremy Linton @ 2021-01-08  6:14 UTC (permalink / raw)
  To: devel
  Cc: ard.biesheuvel, leif, pete, samer.el-haj-mahmoud, awarkentin,
	Jeremy Linton

The rpi4 has a secondary SD controller at offset
0xfe340000. This controller appears to be a mostly
compliant SDHCI controller (a newer more bugfree
Arasan?). So the existing Arasan driver should be
bound to it. This allows the rpi4 to boot
with its normal eMMC2->SD card, Arasan->wifi
configuration that is described in the Linux DT.

To achieve this, it appears we should be tweaking
some of the expansion gpios, and probably telling
the firmware to power everything up. To do that
the vpu mailbox headers are synced with a more recent
list of the mailbox commands, then the rpi
firmware dxe is extended to support some futher
gpio/power commands. Once that is complete we tweak
the arasan driver to use an alternate register base,
add a workaround for a known clock crossing bug, and
set the card voltage.

Of note, this set does _NOT_ change the HID/CID's
and add the additional eMMC2 controller to the
DSDT table.

v4->v5: variable rename
v3->v4: Commit message tweaks, variable rename.
v1->v3: Use some mailbox defines rather than opencoded constants

Jeremy Linton (7):
  Platform/RaspberryPi: Update VPU mailbox constants
  Platform/RaspberryPi: Add further mailbox helpers
  Platform/RaspberryPi: Split MMC register definitions
  Platform/RaspberryPi/Arasan: Add write delay and voltage/clock config
  Platform/RaspberryPi/Arasan: Select the correct base frequency
  Platform/RaspberryPi: Power up SD, and tweak GPIOs
  Platform/RaspberryPi: Correct device path removal.

 .../Drivers/ArasanMmcHostDxe/ArasanMmcHostDxe.c    | 131 ++++++++---
 .../Drivers/ArasanMmcHostDxe/ArasanMmcHostDxe.h    |   1 +
 Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c |   7 +
 .../Drivers/RpiFirmwareDxe/RpiFirmwareDxe.c        | 240 ++++++++++++++++++++-
 .../RaspberryPi/Include/IndustryStandard/RpiMbox.h |  94 +++++++-
 .../RaspberryPi/Include/Protocol/RpiFirmware.h     |  25 +++
 .../Library/PlatformBootManagerLib/PlatformBm.c    |   2 +-
 .../Bcm283x/Include/IndustryStandard/Bcm2836Sdio.h |  42 ++--
 8 files changed, 484 insertions(+), 58 deletions(-)

-- 
2.13.7


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2021-01-08  9:45 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-01-08  6:14 [PATCH v5 0/7] rpi4: Enable eMMC2 controller Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 1/7] Platform/RaspberryPi: Update VPU mailbox constants Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 2/7] Platform/RaspberryPi: Add further mailbox helpers Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 3/7] Platform/RaspberryPi: Split MMC register definitions Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 4/7] Platform/RaspberryPi/Arasan: Add write delay and voltage/clock config Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 5/7] Platform/RaspberryPi/Arasan: Select the correct base frequency Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 6/7] Platform/RaspberryPi: Power up SD, and tweak GPIOs Jeremy Linton
2021-01-08  6:14 ` [PATCH v5 7/7] Platform/RaspberryPi: Correct device path removal Jeremy Linton
2021-01-08  9:45 ` [PATCH v5 0/7] rpi4: Enable eMMC2 controller Ard Biesheuvel

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