ARM: stm32mp: depend on ARCH_STM32MP for SoC drivers ...

The i2c, MCI and reset controller peripherals are STM32-specific.
There is no reason to ask uses on oldconfig about it, thus make them
depend on ARCH_STM32MP || COMPILE_TEST.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: reword MCI_STARTUP text ...

With the recent addition of a generic device_detect for MCI devices,
the MCI_STARTUP help text is no longer accurate. Reword it, but leave
the option as-is as some boards may be broken if we drop the option
(e.g. because they still depend on a probe order or call
default_environment_path_set, but don't explicitly detect the device).

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/powerpc'

drivers: mark first batch of compilable drivers for COMPILE_TEST ...

All of these drivers have a runtime dependency on SoC peripherals, but
can nevertheless be compile-tested. Add COMPILE_TEST as an alternate
dependency.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: explicitly select dependency STMP_DEVICE for i.MX23/28 drivers ...

Some of the i.MXs drivers can be build tested even if building for other
platforms. Support adding a future COMPILE_TEST dependency to some of
these drivers by explicitly having their Kconfig symbol select STMP_DEVICE
if the driver calls stmp_reset_block.

This has not been necessary for the normal build, because the ARCH
symbols for the IMX23 and IMX28 already selected STMP_DEVICE.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: sdhci: add Atmel SDHCI (sama5d2, sam9x60) support ...

We already support Ethernet and QSPI on the SAMA5D2, but MMC was so far
missing. Port over the at91bootstrap driver to barebox. Some parts are
based on the U-Boot and Linux implementations.

To support future use in PBL, the driver model and driver implementation
parts are split into separate files with the latter being compilable for PBL
as well.

Registers, which are found in the common Linux sdhci.h have been added
to the barebox sdhci.h. Registers which appear to be Atmel specific have
been added to atmel-sdhci-common.c instead.

The driver still misses some parts, which will follow later:

  - ADMA is unsupported, PIO only for now
  - Only the SD/MMC controller already enabled by the first stage
    bootloader is supported. Further clocking changes appear
    to be necessary to enable another

Both can be retrofitted later on and don't hold us back from booting
from MMC.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mmc: add MCI_SDHCI dependency to Arasan driver ...

The Arasan driver depends on the SDHCI driver, without it we
will see undefined references while linking arasan-sdhci.c:283: undefined
reference to `sdhci_set_cmd_xfer_mode' arasan-sdhci.c:299: undefined
reference to `sdhci_read_response' arasan-sdhci.c:303: undefined reference to
`sdhci_transfer_data'

Signed-off-by: Michael Graichen <michael.graichen@hotmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/sdhci'

mci: imx-esdhc-pbl: Use sdhci_transfer_data() ...

Drop some extra code by converting esdhc_do_data() to use
sdhci_transfer_data().

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: MCI_IMX_ESDHC_PBL has no dependency on MCI ...

While it is located in the MCI deirectory, it has no direct dependency
on the MCI core, so it should not be under the MCI condition in Kconfig.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add Arasan SDHCI controller driver ...

This adds support for the Arasan SDHCI controller, which is found on
the Xilinx Zynq 7000 and ZynqMP SoCs. This just adds very basic
PIO read/write support.

This submission is also missing the tap delay configuration, which is
required for the high speed modes on the ZynqMP, but this can be
added in a separate patch once it is clear how the interface for this
feature should look like.

The driver skeleton was provided by Michael, most of the actual driver
porting work was done by Thomas and some coding style fixes and write
support bug fixes added by Lucas.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Thomas Haemmerle <thomas.haemmerle@wolfvision.net>
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: dove: use sdhci helpers ...

To use the sdhci helpers we have to switch to the sdhci accessors.
Also use sdhci_read_response().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: tegra: use sdhci helpers ...

To use the sdhci helpers we have to switch to the sdhci accessors.
Also use sdhci_read_response().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: bcm2835: use sdhci helpers ...

To use the sdhci helpers we have to switch to the sdhci accessors.
Also use sdhci_read_response().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: use sdhci helpers ...

To use the sdhci helpers we have to switch to the sdhci accessors.
Also use sdhci_read_response().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Add sdhci helper ...

We have several SDHCI compatible drivers in the tree. This starts
with a set of generic helper functions for these drivers to share
some common functionality.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add support for stm32mp sd/mmc controller ...

This driver was ported from u-boot v2019.10.
Instead of devicetree compatible it is using ARM AMBA id. So, there is
no need to patch devicetree with different compatible as it was
implemented in u-boot.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add driver for BCM283x sdhost core ...

The sdhost is a simple MMC controller found on the Broadcom
BCM283x line of SoCs. The driver code was ported from U-Boot
and then simplified a bit, by dropping a lot of the state
tracking.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/spd'

esdhc-xload: Move to drivers/mci ...

The esdhc-xload code will be used by upcoming Layerscape support aswell,
so move it from architecture code to drivers/mci/.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

crc: import crc_itu_t() from kernel ...

Our cyc_crc16() function is the same function as crc_itu_t() in the
Linux kernel. Import and use crc_itu_t() from the Kernel for
consistency.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: imx-esdhc: Add layerscape support ...

This adds support for the esdhc controller found on Layerscape SoCs.
This means adding the compatible and a driver data to access the
controller in bigendian mode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add Marvell Dove SDHCI driver ...

This adds a driver for the SDHCI controller found on Marvell Dove SoCs.
Despite a missing pinctrl driver, corresponding MPP config has to be
set on a per board basis.

This driver was succesfully tested with Solidrun Dove Cubox.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bcm2835: introduce mach-bcm283x ...

This patch changes the most part of mach-bcm2835 to mach-bcm283x. This
prepares to add RPi2 support which is a bcm2836. This patch changes the
Kconfig entry namens to BCM283X for drivers only. These drivers should
working the same in bcm2836.

While updating defconfig I added LED support/trigger option.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MCI: pxa: depend on right symbol ...

Now that we also have PXA3XX support the dependency on
ARCH_PXA is too broad for this driver.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/streaming-dma' ...

Conflicts:
	drivers/mci/dw_mmc.c

MCI: dw-mmc: convert to streaming DMA ops ...

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MMC: dw_mmc: Add support for PIO mode and Rockchip variant of this hardware ...

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

tegra: add SDMMC controller driver ...

Confirmed working on Tegra 2, may need some small adjustments for
Tegra 3.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mmci: add missing depends on ARM_AMBA ...

The mmci implementation uses some specific arm amba functions, so add a
depends on ARM_AMBA.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>