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* spi: Zap armada100_spi.c and envJagan Teki2016-12-21-204/+0
| | | | | | | | armada100_spi.c and related env is zapping becuase of "no DM conversion". Cc: Ajay Bhargav <ajay.bhargav@einfochips.com> Signed-off-by: Jagan Teki <jagan@openedev.com>
* spi: Zap mpc52xx_spi.c, config and related codeJagan Teki2016-12-21-91/+0
| | | | | | | | | armada100_spi.c, related config options and related codes are zapping becuase of "no DM conversion". Cc: Werner Pfister <Pfister_Werner@intercontrol.de> Signed-off-by: Jagan Teki <jagan@openedev.com> Reviewed-by: Tom Rini <trini@konsulko.com>
* spi: cadence_qspi: Move DT prop code to match layoutPhil Edworthy2016-12-15-1/+1
| | | | | | | | Move the code to read the "sram-size" property into the other code that reads properties from the node, rather than the SF subnode. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Fix CS timingsPhil Edworthy2016-12-15-11/+12
| | | | | | | | | | | | | | The Cadence QSPI controller has specified overheads for the various CS times that are in addition to those programmed in to the Device Delay register. The overheads are different for the delays. In addition, the existing code does not handle the case when the delay is less than a SCLK period. This change accurately calculates the additional delays in Ref clocks. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Remove returns from end of void functionsPhil Edworthy2016-12-15-8/+0
| | | | | | Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Use spi mode at the point it is neededPhil Edworthy2016-12-15-9/+5
| | | | | | | | Instead of extracting mode settings and passing them as separate args to another function, just pass the SPI mode as an arg. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Clean up the #define namesPhil Edworthy2016-12-15-43/+43
| | | | | | | | | | | | | A lot of the #defines are for single bits in a register, where the name has _MASK on the end. Since this can be used for both a mask and the value, remove _MASK from them. Whilst doing so, also remove the unnecessary brackets around the constants. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Use #define for bits instead of bit shiftsPhil Edworthy2016-12-15-18/+19
| | | | | | | | | | | | Most of the code already uses #defines for the bit value, rather than the shift required to get the value. This changes the remaining code over. Whislt at it, fix the names of the "Rd Data Capture" register defs. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Better debug information on the SPI clock ratePhil Edworthy2016-12-15-3/+3
| | | | | | | | Show what the output clock rate actually is. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Fix baud rate calculationPhil Edworthy2016-12-15-16/+6
| | | | | | | | | | | | | | With the existing code, when the requested SPI clock rate is near to the lowest that can be achieved by the hardware (max divider of the ref clock is 32), the generated clock rate is wrong. For example, with a 50MHz ref clock, when asked for anything less than a 1.5MHz SPI clock, the code sets up the divider to generate 25MHz. This change fixes the calculation. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: cadence_qspi: Fix clearing of pol/pha bitsPhil Edworthy2016-12-15-2/+2
| | | | | | | | Or'ing together bit positions is clearly wrong. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* spi: Add error checking for invalid bus widthsSimon Glass2016-12-15-2/+2
| | | | | | | | | | At present an invalid bus width prints a message but does not return an error. This is the opposite of the correct behaviour. Adjust it to avoid code bloat in the common case, and avoid hard-to-debug failure in the uncommon case. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
* ARM: DRA7x/AM57xx: Get rid of CONFIG_AM57XXNishanth Menon2016-12-03-1/+1
| | | | | | | | | | | CONFIG_AM57XX is just an unnecessary macro that is redundant given So, remove the same instead of spreading through out the u-boot source code and getting in the way to maintain common code for DRA7x family. Acked-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
* spi: Add a debug() on bind failureSimon Glass2016-11-25-1/+4
| | | | | | | This is an uncommon error but we may as well have a debug() message when it happens. Signed-off-by: Simon Glass <sjg@chromium.org>
* rockchip: spi: Honour the deactivation delaySimon Glass2016-11-25-0/+8
| | | | | | | This is not currently implemented. Add support for this so that the Chrome OS EC can be used on jerry. Signed-off-by: Simon Glass <sjg@chromium.org>
* rockchip: spi: Add support for of-platdataSimon Glass2016-11-25-1/+35
| | | | | | Allow this driver to be used with of-platdata on rk3288. Signed-off-by: Simon Glass <sjg@chromium.org>
* spi: Add of-platdata support to SPI and SPI flashSimon Glass2016-11-25-1/+12
| | | | | | | Some boards may want to use these subsystems with of-platdata in SPL. Add support for this by avoiding any device tree access in this case. Signed-off-by: Simon Glass <sjg@chromium.org>
* spi: kirkwood_spi: implement mvebu_spi_set_mode()Chris Packham2016-11-18-0/+15
| | | | | | | | | Set the appropriate bits in the interface config register based on the SPI_ mode flags. Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com> Signed-off-by: Chris Packham <judge.packham@gmail.com>
* spi: ti_qspi: Fix baudrate divider calculationVignesh R2016-11-13-9/+7
| | | | | | | | | Fix the divider calculation logic to choose a value so that the resulting baudrate is either equal to or closest possible baudrate less than the requested value. While at that, cleanup ti_spi_set_speed(). Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
* dm: at91: Add driver model support for the spi driverWenyou Yang2016-10-28-0/+296
| | | | | | | | | | Add driver model support while retaining the existing legacy code. This allows the driver to support boards that have converted to driver model as well as those that have not. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com>
* libfdt: Sync fdt_for_each_subnode() with upstreamSimon Glass2016-10-13-1/+1
| | | | | | | | | | | The signature for this macro has changed. Bring in the upstream version and adjust U-Boot's usages to suit. Signed-off-by: Simon Glass <sjg@chromium.org> Update to drivers/power/pmic/palmas.c: Signed-off-by: Keerthy <j-keerthy@ti.com> Change-Id: I6cc9021339bfe686f9df21d61a1095ca2b3776e8
* Merge git://git.denx.de/u-boot-fsl-qoriqTom Rini2016-10-12-2/+8
|\ | | | | | | | | | | | | | | Signed-off-by: Tom Rini <trini@konsulko.com> Conflicts: include/configs/ls1021aqds.h include/configs/ls1021atwr.h
| * spi: fsl_qspi: Preserve endianness of QSPI MCRYork Sun2016-10-06-2/+8
| | | | | | | | | | | | | | | | | | | | | | The endianness can be changed by RCW + PBI sequence. It may have other than power on reset value. Signed-off-by: York Sun <york.sun@nxp.com> CC: Yuan Yao <yao.yuan@nxp.com> CC: Peng Fan <peng.fan@nxp.com> CC: Alison Wang <alison.wang@nxp.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
* | Various, accumulated typos collected from around the tree.Robert P. J. Day2016-10-06-1/+1
|/ | | | | | | | | | | | | | | | | | | | | Fix various misspellings of: * deprecated * partition * preceding,preceded * preparation * its versus it's * export * existing * scenario * redundant * remaining * value * architecture Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Reviewed-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Stefan Roese <sr@denx.de>
* spi: Add driver for Marvell Armada 3700 SoCStefan Roese2016-09-27-0/+303
| | | | | | | | | | | | | | | | | | The SPI IP core in the Marvell Armada 3700 is similar to the one in the other Armada SoCs. But the differences are big enough that it makes sense to introduce a new driver instead of cluttering the old kirkwood driver with #ifdef's. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Nadav Haklai <nadavh@marvell.com> Cc: Kostya Porotchkin <kostap@marvell.com> Cc: Wilson Ding <dingwei@marvell.com> Cc: Victor Gu <xigu@marvell.com> Cc: Hua Jing <jinghua@marvell.com> Cc: Terry Zhou <bjzhou@marvell.com> Cc: Hanna Hawa <hannah@marvell.com> Cc: Haim Boot <hayim@marvell.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
* treewide: replace #include <asm/errno.h> with <linux/errno.h>Masahiro Yamada2016-09-23-6/+6
| | | | | | | | | | | 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>
* Merge branch 'master' of git://git.denx.de/u-boot-spiTom Rini2016-09-22-36/+51
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| * spi: Kconfig: Move FSL_QSPI entry to non-dm placeJagan Teki2016-09-22-7/+7
| | | | | | | | | | | | | | | | | | Since FSL_QSPI driver still supporting non-dm code better to move the Kconfig from DM undefined place. Cc: Stefano Babic <sbabic@denx.de> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
| * spi: Use mode for rx mode flagsJagan Teki2016-09-22-15/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | Make rx mode flags as generic to spi, earlier mode_rx is maintained separately because of some flash specific code. Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
| * spi: ti_qspi: Remove unnecessary udelay for AM437xVignesh R2016-09-22-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | This udelay() was added as an HACK and is no longer required. All read/write/erase operations work fine even without this delay. Hence, remove the udelay() call. Tested read/write/erase operation on AM437x SK. Also tested QSPI Boot. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
| * spi: ti_qspi: use 128 bit transfer mode when writing to flashVignesh R2016-09-22-6/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TI QSPI has four 32 bit data registers which can be used to transfer 16 bytes of data at once. The register group QSPI_SPI_DATA_REG_3, QSPI_SPI_DATA_REG_2, QSPI_SPI_DATA_REG_1 and QSPI_SPI_DATA_REG is treated as a single 128-bit word for shifting data in and out. The bit at QSPI_SPI_DATA_REG_3[31] position is the first bit to be shifted out in case of 128 bit transfer mode. Therefore the first byte to be written to flash should be at QSPI_SPI_DATA_REG_3[31-25] position. Instead of writing 1 byte at a time when interacting with SPI NOR flash, make use of all the four registers so that 16 bytes can be transferred in one go. With this patch, the flash write speed increases from ~250KBs/ to ~650KB/s on DRA74 EVM. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
| * spi: zynq_spi: Fix infinite looping while xferLad, Prabhakar2016-09-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During spi transfer, for example: sspi 1:1.0 8 ff the rx_len values will be: rx_len = 0 rx_len = 4294967295 This caused a busy looping during xfer, this patch fixes it by adding a check while reading the rx fifo Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
* | spi: zynq: Use variable to remove u32 to u64 conversionsMichal Simek2016-09-22-2/+5
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current code generates warning when it is compiled for arm64: Warnings: In file included from drivers/spi/zynq_spi.c:14:0: drivers/spi/zynq_spi.c: In function ‘zynq_spi_init_hw’: drivers/spi/zynq_spi.c:95:9: warning: large integer implicitly truncated to unsigned type [-Woverflow] writel(~ZYNQ_SPI_ENR_SPI_EN_MASK, &regs->enr); ^ ./arch/arm/include/asm/io.h:146:34: note: in definition of macro ‘writel’ #define writel(v,c) ({ u32 __v = v; __iowmb(); __arch_putl(__v,c); __v; }) ^ drivers/spi/zynq_spi.c: In function ‘zynq_spi_release_bus’: drivers/spi/zynq_spi.c:177:9: warning: large integer implicitly truncated to unsigned type [-Woverflow] writel(~ZYNQ_SPI_ENR_SPI_EN_MASK, &regs->enr); ^ ./arch/arm/include/asm/io.h:146:34: note: in definition of macro ‘writel’ #define writel(v,c) ({ u32 __v = v; __iowmb(); __arch_putl(__v,c); __v; }) ^ This patch is using one variable to do conversion via u32 variable. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: tegra: fix hang in set_mode()Stephen Warren2016-08-25-0/+11
| | | | | | | | | | | | | | | | | | | | | | In tegra20_slink.c, the set_mode() function may be executed before the SPI bus is claimed the first time, and hence the clocks to the SPI controller may not be running. If so, any register read/write at this time will hang the CPU. Fix this by ensuring the clock is running as soon as the driver is probed. This is observed on the Tegra30 Beaver board. Apply the same clock initialization fix to all other Tegra SPI drivers so that if set_mode() is ever implemented there, the same bug will not appear. Note that tegra114_spi.c already operates in this fashion. The clock manipulation code is copied from claim_bus() to probe() rather than moved. This ensures that any calls to set_speed() take effect; the clock can't be set once during probe and left unchanged. Fixes: 5cb1b7b395c0 ("spi: tegra20: Add support for mode selection") Cc: Mirza Krak <mirza.krak@hostmobility.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* spi: cadence_qspi_apb: Ensure baudrate doesn't exceed max valueChin Liang See2016-08-07-2/+5
| | | | | | | | | | | | | | | | Ensuring the baudrate divisor value doesn't exceed the max value in the calculation.It will be capped at max value to ensure the correct value being written into the register. Example of the existing bug is when calculated div = 16. After and with the mask, the value written to register is actually 0 (register field for baudrate divisor). With this fix, the value written is now 15 which is max value for baudrate divisor. Signed-off-by: Chin Liang See <clsee@altera.com> Cc: Marek Vasut <marex@denx.de> Cc: Jagan Teki <jteki@openedev.com> Cc: Dinh Nguyen <dinguyen@altera.com>
* driver: spi: fsl-qspi: remove compile WarningsYunhui Cui2016-08-02-1/+3
| | | | | | | | | | Warnins log: drivers/spi/fsl_qspi.c: In function ‘qspi_ahb_read’: drivers/spi/fsl_qspi.c:400:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] memcpy(rxbuf, (u8 *)(priv->cur_amba_base + priv->sf_addr), len); Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
* spi: ti_qspi: dra7xx: Add support to use 76.8MHz clockVignesh R2016-07-30-5/+12
| | | | | | | | | | According to AM572x DM SPRS953A, QSPI bus speed can be 76.8MHz, update the driver to use the same. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
* spi: ti_qspi: Remove delay in read path for dra7xxVignesh R2016-07-30-3/+0
| | | | | | | | | | | | As per commit b545a98f5dc563 ("spi: ti_qspi: Add delay for successful bulk erase) says its added to meet bulk erase timing constraints. But bulk erase is a cmd to flash and delay in read path does not make sense. Morever, testing on DRA74/DRA72 evm has shown that this delay is no longer required. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
* spi: ti_qspi: Fix compiler warning when DEBUG macro is setVignesh R2016-07-30-2/+2
| | | | | | | | | | clk_div is uninitialized at the beginning of ti_spi_set_speed(), move debug() print after clk_div calculation to avoid compiler warning and to have proper value of clk_div printed during debugging. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
* spi: ti_qspi: Fix failure on multiple READ_ID cmdVignesh R2016-07-30-3/+2
| | | | | | | | | | | | | | Populating QSPI_RD_SNGL bit(0x1) in priv->cmd means that value QSPI_INVAL (0x4) is not written to CMD field of QSPI_SPI_CMD_REG in ti_qspi_cs_deactivate(). Therefore CS is never deactivated between successive READ ID which results in sf probe to fail. Fix this by not populating priv->cmd with QSPI_RD_SNGL and OR it wih priv->cmd as required (similar to the convention followed in the driver). Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
* dm: Use dm_scan_fdt_dev() directly where possibleSimon Glass2016-07-27-7/+1
| | | | | | | Quite a few places have a bind() method which just calls dm_scan_fdt_dev(). We may as well call dm_scan_fdt_dev() directly. Update the code to do this. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Convert users from dm_scan_fdt_node() to dm_scan_fdt_dev()Simon Glass2016-07-27-2/+1
| | | | | | | This new function is more convenient for callers, and handles pre-relocation situations automatically. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: spi: Read default speed and mode values from DTVignesh R2016-07-09-2/+6
| | | | | | | | | | | | In case of DT boot, don't read default speed and mode for SPI from CONFIG_*, instead read from DT node. This will make sure that boards with multiple SPI/QSPI controllers can be probed at different bus frequencies and SPI modes. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: cadence_quadspi: Enable QUAD mode based on DT dataVignesh R2016-07-09-7/+8
| | | | | | | | | | | | Instead of relying on CONFIG_SPI_FLASH_QUAD to be defined to enable QUAD mode, make use of mode_rx field of dm_spi_slave_platdata to determine whether to enable or disable QUAD mode. This is necessary to support muliple SPI controllers where one of them may not support QUAD mode. Signed-off-by: Vignesh R <vigneshr@ti.com> Tested-by: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: cadence_qspi_apb: Support 32 bit AHB addressVignesh R2016-07-09-3/+2
| | | | | | | | | | | AHB address can be as long as 32 bit, hence remove the CQSPI_REG_INDIRECTRDSTARTADDR mask. Since AHB address is passed from DT and read as u32 value, it anyway does not make sense to mask upper bits. Signed-off-by: Vignesh R <vigneshr@ti.com> Tested-by: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: davinci_spi: Convert to driver to adapt to DMVignesh R2016-07-09-89/+240
| | | | | | | | Convert davinci_spi driver so that it complies with SPI DM framework. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jteki@openedev.com>
* spi: spi-uclass: fix typo in debug outputAnatolij Gustschin2016-07-06-1/+1
| | | | | Signed-off-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com>
* driver: qspi: correct QSPI disable CS reset valuePraneeth Bajjuri2016-07-01-1/+1
| | | | | | | | | | | Correcting QSPI disable/unselect CS reset value. CTRL_CORE_CONTROL_IO_2: QSPI_MEMMAPPED_CS[10:8] This is not causing any issue, but its better to untouch the reserved bits. Praneeth Bajjuri <praneeth@ti.com> Signed-off-by: Ravi Babu <ravibabu@ti.com>
* clk: convert API to match reset/mailbox styleStephen Warren2016-06-19-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following changes are made to the clock API: * The concept of "clocks" and "peripheral clocks" are unified; each clock provider now implements a single set of clocks. This provides a simpler conceptual interface to clients, and better aligns with device tree clock bindings. * Clocks are now identified with a single "struct clk", rather than requiring clients to store the clock provider device and clock identity values separately. For simple clock consumers, this isolates clients from internal details of the clock API. * clk.h is split so it only contains the client/consumer API, whereas clk-uclass.h contains the provider API. This aligns with the recently added reset and mailbox APIs. * clk_ops .of_xlate(), .request(), and .free() are added so providers can customize these operations if needed. This also aligns with the recently added reset and mailbox APIs. * clk_disable() is added. * All users of the current clock APIs are updated. * Sandbox clock tests are updated to exercise clock lookup via DT, and clock enable/disable. * rkclk_get_clk() is removed and replaced with standard APIs. Buildman shows no clock-related errors for any board for which buildman can download a toolchain. test/py passes for sandbox (which invokes the dm clk test amongst others). Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
* spi: pic32_spi: add SPI master driver for PIC32 SoC.Purna Chandra Mandal2016-06-10-0/+457
| | | | | | | | | | | | This driver implements SPI protocol in master mode to communicate with the SPI device connected on SPI bus. It handles /CS explicitly by controlling respective pin as gpio ('cs-gpios' property in dt node) and uses PIO mode for SPI transaction. It is configurable based on driver-model only. Cc: Jagan Teki <jteki@openedev.com> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
generated by cgit v1.1 at 2024-07-05 05:12:34 +0000