The generic probe code in dm works, so get rid of the leftover cruft.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Revision 1.0 of this IP has a quirk where if during a long read transfer
the transfer_size register will go to 0, the master will send a NACK to
the slave prematurely.
The way to work around this is to reprogram the transfer_size register
mid-transfer when the only the receive fifo is known full, i.e. the I2C
bus is known non-active.
The workaround is based on the implementation in the linux-kernel.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Reorder the timeout loop such that we first check if the
condition is already true, and then call udelay() so if
the condition is already true, break early.
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Revision 1.0 of this IP has a couple of issues, such as not supporting
repeated start conditions for read transfers.
So scan through the list of i2c messages for these conditions
and report an error if they are attempted.
This has been fixed for revision 1.4 of the IP, so only report the error
when the IP can really not do it.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Adding additional compatible string for version 1.4 of the IP block.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content. (both just wrap <asm-generic/errno.h>)
Replace all include directives for <asm/errno.h> with <linux/errno.h>.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
400kHz is maximum freq which can be used on Xilinx ZynqMP.
Support it with standard divider calculator.
Input freq is hardcoded to 100MHz input freq till we have clock driver
which can provide this information for exact configuration.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
set_bus_speed is the right function where bus speed should be setup.
This move enable option to remove probe and remove functions which are
empty.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Extract reading IP base address in function which is designed for it.
Also enable option to read more information from DT in this function.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
This is a possible drop in replacement for drivers/i2c/zynq-i2c.c
Since this is cadence IP it has been renamed to cdns-i2c,
to make sense with the compatible string.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
