[ Upstream commit fb59ee37cfe20d10d19568899d1458a58361246c ]

If UHS speed modes are enabled, a compatible SD card switches down to
1.8V during enumeration. If after this a software reboot/crash takes
place and on-chip ROM tries to enumerate the SD card, the difference in
IO voltages (host @ 3.3V and card @ 1.8V) may end up damaging the card.

The fix for this is to have support for power cycling the card in
hardware (with a PORz/soft-reset line causing a power cycle of the
card). Because the beaglebone X15 (rev A,B and C), am57xx-idks and
am57xx-evms don't have this capability, disable voltage switching for
these boards.

The major effect of this is that the maximum supported speed
mode is now high speed(50 MHz) down from SDR104(200 MHz).

commit 88a748419b84 ("ARM: dts: am57xx-idk: Remove support for voltage
switching for SD card") did this only for idk boards. Do it for all
affected boards.
Signed-off-by: NFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

The IO lines of MMC2 in am57xx-beagle-x15/am57xx-idk is connected to
3.3v. Use "ddr_3_3v" instead of "ddr_1_8v" to indicate DDR mode
works in 3.3v on these boards.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

commit 18aa0f4b ("ARM: dts: am57xx-idk: Select pull down
for mmc1_clk line in default mode") modified mmc1_pins_default
pinctrl group in am57xx-idk-common.dtsi in order to change the CLK
line to PIN_INPUT_PULLDOWN. However instead of modifying the pinctrl
group, use the new pinctrl group "mmc1_pins_default_no_clk_pu" in
dra7-mmc-iodelay.dtsi added specifically to be used for CLK line without
external pull up.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

During a short period when the bus voltage is switched from 3.3v to 1.8v,
(to enumerate UHS mode), the mmc module is disabled and the mmc IO lines
are kept in a state according to the programmed pad mux pull type.

According to 4.2.4.2 Timing to Switch Signal Voltage in "SD Specifications
Part 1 Physical Layer Specification Version 5.00 February 22, 2016", the
host should hold CLK low for at least 5ms.

In order to keep the card line low during voltage switch, the pad mux of
mmc1_clk line should be configured to pull down.

This is specific to am57xx-idk (and not all dra72/dra74 based boards)
since mmc1_clk line in am57xx-idk is not connected to an external
pullup.

While at that change the order of header files in am571x-idk.dts and
am572x-idk.dts so that the modified pinctrl values in am57xx-idk-common
could take effect.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add vdd-supply as smps12_reg for cpu0.
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

am574x-idk is similar to am572x-idk with am574x SoC. So create
a common file for both evms and include SoC dtsi as needed.
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Include dra74x-mmc-iodelay.dtsi which has pinmux and IODelay
configuration values for the various MMC modes for dra74x SoC
and use it in the pinctrl properties of MMC devicetree
nodes present in am572x-idk.dts.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

AM572x IDK and AM571x IDK boards have equivalent
design of how SD card and eMMC are connected.

The two EVMs mainly differ in IOdelay configuration
needed (because of difference in SoC used).

Move the common properties to am57xx-idk-common.dtsi
file which is common for both EVMs.
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add pcie1 dt node in order for the controller to operate in
endpoint mode. However since none of the dra7 based boards have
slots configured to operate in endpoint mode, keep EP mode
disabled.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Replace deprecated "vmmc_aux" with the generic "vqmmc" binding for
MMC IO supply.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The GPIO polarity for MMC1 card detect is set to '0' which means
active-high. However the polarity should be active-low. Fix it
here.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Enable the System Mailboxes 5 and 6 and the corresponding
child sub-mailbox (IPC 3.x) nodes for the AM572x IDK board.
This is needed to enable communication with the respective
remote processors IPU1, IPU2, DSP1 and DSP2 from the MPU.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add 'gpios' property to pcie1 dt node and populate it with
GPIO3_23 in order to drive PCIE_RESETn high.

This gets PCIe cards to be detected in AM572X IDK board.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

VBUS detection is available on the board via the palmas PMIC.
Use extcon-palmas driver instead of extcon-gpio-usb driver.
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The SN65HVS882 is available on both the AM572x and AM571x IDKs and is
attached to SPI1. Input is attached to the I/O header. The load trigger
is attached to GPIO3_19 on the AM572x IDK.
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch fixes the following DTC warnings:

"Node /memory has a reg or ranges property, but no unit name"
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The AM572x-IDK board is a board based on TI's AM5728 SOC
which has a dual core 1.5GHz A15 processor. This board is a
development platform for the Industrial market with:
- 2GB of DDR3L
- Dual 1Gbps Ethernet
- HDMI,
- PRU-ICSS
- uSD
- 16GB eMMC
- CAN
- RS-485
- PCIe
- USB3.0
- Video Input Port
- Industrial IO port and expansion connector

The link to the data sheet and TRM can be found here:

http://www.ti.com/product/AM5728

This patch creates a common dtsi file that will provide a common board
dtsi file to define the nodes that are common to AM57xx (including the
upcoming AM5718) IDK boards.

Initial support is only for basic peripherals
Signed-off-by: NSchuyler Patton <spatton@ti.com>
Signed-off-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>