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Commit Graph

Author	SHA1	Message	Date
Moritz Fischer	19cdd5c5be	i2c: i2c-cdns: No need for dedicated probe function 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	8 years ago
Moritz Fischer	08c11aaefb	i2c: i2c-cdns: Implement workaround for hold quirk of the rev 1.0 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	8 years ago
Moritz Fischer	0ec0c58643	i2c: i2c-cdns: Reorder timeout loop for interrupt waiting 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	8 years ago
Moritz Fischer	5e42985208	i2c: i2c-cdns: Detect unsupported sequences for rev 1.0 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	8 years ago
Moritz Fischer	50994ab757	i2c: cdns: Add additional compatible string for r1p14 of the IP. 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>	8 years ago
Masahiro Yamada	1221ce459d	treewide: replace #include <asm/errno.h> with <linux/errno.h> 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>	9 years ago
Michal Simek	ad72e7622b	i2c: cdns: Support different bus speeds 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>	9 years ago
Michal Simek	6150be9094	i2c: cdns: Moving speed setup from probe to set_bus_speed function 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>	9 years ago
Michal Simek	a13767bc0e	i2c: cdns: Read address from DT in ofdata_to_platdata 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>	9 years ago
Moritz Fischer	fdec2d21ef	dm: i2c: Add driver for Cadence I2C IP 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>	9 years ago

10 Commits (7f0cfe478bd817d2bb373522222cf06630fea3cd)