usb: imx-usb-phy: select syscon driver ...

Since b904eca92f we depend on syscon once the "fsl,anatop" property is
found. select MFD_SYSCON to make sure it is available.

Fixes: b904eca92f ("usb: imx-usb-phy: Disable charger detect during initialization")
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: cpsw: adopt to upstream device tree changes ...

Upstream device trees no longer have a "cpsw-phy-sel" property to find
the phy_sel register, instead they have a child device of the pinctrl
node compatible to "ti,am3352-phy-gmii-sel". Also the "rmii-clock-ext"
property is no longer global to the cpsw but instead can be selected
per slave. To adopt to these changes take the short way out for now
and find the new node by its compatible and hardcode the "rmii-clock-ext"
setting (which is set to true in am33xx-l4.dtsi and not overwritten
by any board).

This makes the cpsw driver work again. Tested on Beaglebone black
board.

Fixes: 1dc748b3b2 ("dts: update to v5.1-rc1")
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: HABv4: Reset index variable after error type ...

The index variable is used for each error type, it should be reset to 0
before retrieving the next error status, otherwise error messages are
skipped if the preceding error type incremented index.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pcf857x: fix CONFIG_OF to OFDEVICE ...

There is not CONFIG_OF symbol. We fix this
by using OFDEVICE instead.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/usb-phy'

Merge branch 'for-next/usb-ehci'

Merge branch 'for-next/ubootenv'

Merge branch 'for-next/misc'

Merge branch 'for-next/imx'

Merge branch 'for-next/dma'

Merge branch 'for-next/at91'

Merge branch 'for-next/arm'

nvmem: ocotp: Change TIMING calculation algorithm ...

Port of patch from linux-arm-kernel:
| From: Bryan O'Donoghue <pure.logic@nexus-software.ie>
|
| nvmem: imx-ocotp: Change TIMING calculation to u-boot algorithm
|
| The RELAX field of the OCOTP block is turning out as a zero on i.MX8MM.
| This messes up the subsequent re-load of the fuse shadow registers.
|
| After some discussion with people @ NXP its clear we have missed a trick
| here in Linux.
|
| The OCOTP fuse programming time has a physical minimum 'burn time' that is
| not related to the ipg_clk.
|
| We need to define the RELAX, STROBE_READ and STROBE_PROG fields in terms of
| desired timings to allow for the burn-in to safely complete. Right now only
| the RELAX field is calculated in terms of an absolute time and we are
| ending up with a value of zero.
|
| This patch inherits the u-boot timings for the OCOTP_TIMING calculation on
| the i.MX6 and i.MX8. Those timings are known to work and critically specify
| values such as STROBE_PROG as a minimum timing.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nvmem: ocotp: Ensure WAIT bits are preserved ...

Port of patch from linux-arm-kernel:
| From Bryan O'Donoghue <pure.logic@nexus-software.ie>
|
| nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing
|
| The i.MX6 and i.MX8 both have a bit-field spanning bits 27:22 called the
| WAIT field.
|
| The WAIT field according to the documentation for both parts "specifies
| time interval between auto read and write access in one time program. It is
| given in number of ipg_clk periods."
|
| This patch ensures that the relevant field is read and written back to the
| timing register.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nvmem: ocotp: Elongate OCOTP_CTRL_ADDR field ...

Port of patch from linux-arm-kernel:
| From: Bryan O'Donoghue <pure.logic@nexus-software.ie>
|
| nvmem: imx-ocotp: Elongate OCOTP_CTRL ADDR field to eight bits
|
| i.MX6 defines OCOTP_CTRLn:ADDR as seven bit address-field with a one bit
| RSVD0 field, i.MX7 defines OCOTP_CTRLn:ADDR as a four bit address-field
| with a four bit RSVD0 field.
|
| i.MX8 defines the OCOTP_CTRLn:ADDR bit-field as a full range eight bits.
|
| i.MX6 and i.MX7 should return zero for their respective RSVD0 bits and
| ignore a write-back of zero where i.MX8 will make use of the full range.
|
| This patch expands the bit-field definition for all users to eight bits,
| which is safe due to RSVD0 being a no-op for the i.MX6 and i.MX7.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

misc: Add a driver to expose U-Boot environment variable data ...

Add a driver to expose U-Boot environment variable data as a single
mmap-able device, hiding various low-level details such as:

    * Preamble format differences
    * Read/write logic in presence of redundant partition

Not very useful on its own, it is a crucial low-level plumbing needed
by filesystem driver introduced in the following commit.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Cory Tusar <cory.tusar@zii.aero>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

serial_ns16550: readd support for mvebu armada 38x ...

The armada 38x device tree traditionally used "snps,dw-apb-uart" as
compatible for the internal UARTs. This was changed in Linux by commit
b7639b0b15dd ("serial: 8250_dw: Limit dw8250_tx_wait_empty quirk to
armada-38x devices") which was imported into barebox in e4067b75fb6c
("dts: update to v4.18-rc1") to "marvell,armada-38x-uart".

Teach the driver about the new compatible to make the console work
again.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: macb: dma_sync_* receive buffers ...

Receive buffers are properly synchronized only if Cadence is
GEM. Fix it for MACB as well.

Fixes: 86dc5259e25d (net: macb: no need for coherent memory for receive buffer)
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gpio: add driver for PCF857x, PCA{85, 96}7x, and MAX732[89] I2C GPIO expanders ...

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: ohci: Add dependency on HAS_DMA ...

OHCI driver uses varios DMA API functions (dma_alloc_coherent()
et. al), so add dependency on HAS_DMA to indicate that.

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

usb: fsl_udc: Use dma_alloc_coherent() to get DMA address ...

Instead on relying virt_to_phys() to do virtual-to-physical address
conversion, make use of the fact that dma_alloc_coherent() can already
do that for us.

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

apbh: Use dma_alloc_coherent() to get DMA address ...

Avoid converting virtual address to physical by simple casting by
making use of the fact that dma_alloc_coherent() can already return
that information to us.

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

ahci: Do not zero out DMA coherent memory ...

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

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

apbh: Do not zero out DMA coherent memory ...

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

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

nand: nand_mxs: Do not zero out DMA coherent memory ...

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

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

net: rtl8169: Do not zero out DMA coherent memory ...

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

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

usb: ohci-hcd: Do not zero out DMA coherent memory ...

Memory returned by dma_alloc_coherent() should already be zeroed
out, so there's no need to do this explicitly.

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

clk: at91: fix warning about missing const-safety ...

compiling clk-main.c and clk-generated.c results in:

warning: passing argument 1 of 'memcpy' discards 'const' qualifier from
pointer target type [-Wdiscarded-qualifiers]
  memcpy(clkmain->clk.parent_names, parent_names, parents_array_size);
           ~~~~~~~~~~~~^~~~~~~~~~~~~

Avoid this by replacing the xzalloc+memcpy pair with xmemdup.
Zero-initialization of the buffer isn't necessary, because
memcpy spans the whole buffer.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: imx-usb-phy: Disable charger detect during initialization ...

I can't find any erratas this is in refernce to, but apparently
external changer detector needs to be disabled to prevent poor USB
data signal quality. The problem manifest itself as a intermittent USB
transfer corruption that happens to some device under and only under
specific circumstances.

In my case the failure was observed with Transcent SD/micro-SD card
reader (05e3:0745 Genesys Logic, Inc. Logilink CR0012) when connected
directly to front panel USB of ZII RDU2 board (the problem would go
away if device was conntecte via a hub/USB-analyzer/male-female
type A extender cable).

Note that this fix is present in Linux kernel as well as some
abandoned Barebox code removed in the next patch.

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

usb: imx-usb-phy: Use stmp_reset_block() to reset PHY ...

Upstream kernel driver uses stmp_reset_block() to reset the PHY, so
convert the code to do so as well to save some code and sync both
drivers.

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