u-boot.git/drivers/spi, branch v2011.03-rc1

SPI: mxc_spi: replace fixed offsets with structures

2011-02-01T23:54:43Z

This patch cleans driver code replacing all accesses to registers with fixed offsets with a corresponding structure. Signed-off-by: Stefano Babic

SPI: mxc_spi: add SPI clock calculation and setup to the driver

2011-02-01T23:54:43Z

The MXC SPI driver didn't calculate the SPI clock up to now and just used highest possible divider 512 for DATA RATE in the control register. This results in very low transfer rates. The patch adds code to calculate and setup the SPI clock frequency for transfers. Signed-off-by: Anatolij Gustschin Signed-off-by: Stefano Babic

SPI: mxc_spi: fix swapping bug and add missing swapping in unaligned rx case

2011-02-01T23:54:43Z

We need to shift only one time in each cycle in the swapping loop for unaligned tx case. Currently two byte shift operations are performed in each loop cycle causing zero gaps in the transmited data, so not all data scheduled for transmition is actually transmited. The proper swapping in unaligned rx case is missing, so add it as we need to put the received data into the rx buffer in the correct byte order. Signed-off-by: Anatolij Gustschin Tested-by: Stefano Babic

SPI: mxc_spi: add support for i.MX35 processor

2011-02-01T23:54:43Z

Signed-off-by: Stefano Babic

OMAP3: SPI driver

2010-12-11T16:01:00Z

CC: Ruslan N. Araslanov Signed-off-by: Ruslan Araslanov Signed-off-by: Sandeep Paulraj

Switch from archive libraries to partial linking

2010-11-17T20:02:18Z

Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier

Merge branch 'master' of git://git.denx.de/u-boot-imx

2010-10-11T08:19:04Z

Blackfin: bfin_spi: add optional DMA support

2010-10-02T20:00:36Z

This moves the last piece from the old spi_flash driver to the new SPI framework -- optional DMA RX support. This typically cuts speeds by ~40% at the cost of additional ~300 bytes. Signed-off-by: Mike Frysinger

MXC: Fix byte-ordering in SPI driver for i.MX31/i.MX51

2010-09-30T12:42:14Z

The actual SPI driver for i.MX31 and i.MX51 controller use a wrong byte ordering, because it is supposed to work only with Freescale's devices, as the Power Controllers (PMIC). The driver is not suitable for general purposes, because the buffers passed to spi_xfer must be 32-bit aligned, as it is used mainly to send integer to PMIC devices. The patch drops any kind of limitation and makes the driver useful with devices controlled sending commands composed by single bytes (or by a odd number of bytes), such as spi flash, sensor, etc. Because the byte ordering is changed, any current driver using this controller must be adapted, too. Signed-off-by: Stefano Babic

MXC: Correct SPI_CPOL setting in SPI driver

2010-09-30T12:42:13Z

The handling of the SPI_CPOL bit inside the SPI driver was wrong. As reported by the manual, the meaning of the SSPOL inside the configuration register is the same as reported by SPI specification (0 if low in idle, 1 is high on idle). The driver inverts this logic. Because this patch sets the logic as specified, it is required to clear the CPOL bit in the configuration file to adapt to the correct logic. Signed-off-by: Stefano Babic Signed-off-by: David Jander