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In order to avoid any floating SD card detect pins as may e.g. happen on
Ixora V1.1A pull them all up.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>
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While MXM3 pin 37 aka WAKE1_MICO is pulled up with 4.7 K on the Apalis
Evaluation board and 100 K on the Ixora carrier board a custom carrier
board may leave it floating which may cause an unintended high interrupt
load on the default wake-up key with which may cause a lower CPU
performance.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>
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Floating pins towards the camera input level-shifter cause it to
consume at least 100mW of power even in idle. This patch fixes this by
configuring pull-downs on all multiplexed camera input pins.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
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Allow for setting the direction of the VI pins' level-shifter. Do not
tri-state those pins' output driver in order to be able to actually
output any values as well. Default to direction input and update
comments accordingly.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>
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The Ixora carrier board has a few MXM3 pins repurposed as follows:
Functionality MXM3 Pin
LED4_RED 146
LED4_GREEN 162
LED5_RED 156
LED5_GREEN 152
PCIE1_WDISABLE_N 144
SW3 160
UART2_3_RS232_FOFF_N 164
This patch allows uncommenting an IXORA define in the board header file
in order to make use of those repurposed pins.
Please note that those pins are usually used for the 8-bit MMC/SD slot
aka Apalis MMC1 and the SDHCI controller/driver unfortunately changes
the output driver behaviour in a way preventing any regular GPIO use.
This patch therefore explicitly does not register the SDHCI driver on
this controller instance in the Ixora case to avoid this.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
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Add a comment about DAP FS pin mux requiring INPUT when operating as I2S slave.
Add a comment about DAP SCLK requiring INPUT even when operating as I2S master.
Add a comment about is_i2s_master in the platform data meaning T30 SoC is I2S
master.
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This patch adds optional UHS support for the 8-bit MMC controller.
Please note that this requires V1.1A or later module hardware plus the
pull-up resistors on the data as well as the command signal lines of
your carrier board need to be removed (e.g. R46 to R54 on our Apalis
Evaluation Board V1.1A). If those pre-requisites are met support can be
enabled using the following kernel command line parameter:
mmc_uhs=1
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Tested on early prototype Apalis T30 V1.0a module.
Known issues:
- ADC not integrated yet.
- HDA not integrated yet.
- CEC not integrated yet.
- IrDA not integrated yet.
- Keys not integrated yet therefore no way to wake from suspend.
- 8-bit MMC1 slot card detection interrupt not working despite
detection GPIO successfully being tested with GPIOConfig.
Note: even 8-bit cards work fine if already plugged-in during boot.
- PCIe limited to internal Gigabit Ethernet chip for now due to our
proprietary way of resetting other ports which requires further
integration into NVIDIA's driver.
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