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* i2c: uniphier-f: use readl_poll_timeout() to poll registersMasahiro Yamada2017-01-29-24/+10
| | | | | | | The readl_poll_timeout() is a useful helper to poll registers and error out if the condition is not met. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* i2c: uniphier(-f): remove unneeded #include <dm/root.h>Masahiro Yamada2017-01-29-2/+0
| | | | | | This include is unnecessary for low-level drivers. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* Merge branch 'master' of git://git.denx.de/u-boot-i2cTom Rini2017-01-18-63/+149
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| * i2c: i2c-cdns: No need for dedicated probe functionMoritz Fischer2017-01-18-21/+0
| | | | | | | | | | | | | | | | | | 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
| * i2c: i2c-cdns: Implement workaround for hold quirk of the rev 1.0Moritz Fischer2017-01-18-30/+89
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * i2c: i2c-cdns: Reorder timeout loop for interrupt waitingMoritz Fischer2017-01-18-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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
| * i2c: i2c-cdns: Detect unsupported sequences for rev 1.0Moritz Fischer2017-01-18-14/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * i2c: mux: Allow muxes to work as children of i2c bus without i2c-parentMoritz Fischer2017-01-18-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | For mux check if the parent is already a device of UCLASS_I2C and if yes just use that. Otherwise see if someone specified an i2c-parent phandle. This mimics the behavior found in the Kernel, as it removes the requirement to explicitly specify a i2c-parent phandle. Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Heiko Schocher <hs@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: u-boot@lists.denx.de
* | Merge git://git.denx.de/u-boot-samsungTom Rini2017-01-18-1/+12
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| * i2c: Kconfig: Add SYS_I2C_S3C24X0 entryJaehoon Chung2017-01-18-0/+5
| | | | | | | | | | | | | | Adding Kconfig for SYS_I2C_S3C24X0. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
| * i2c: s3c24x0: fix the compiler error for exynos4Jaehoon Chung2017-01-18-1/+7
| | | | | | | | | | | | | | | | | | If CONFIG_SYS_I2C_S3C24X0_SLAVE isn't defined, then complie error should be occurred. This patch is for preventing it. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* | i2c: cdns: Add additional compatible string for r1p14 of the IP.Moritz Fischer2017-01-10-0/+1
|/ | | | | | | | | 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>
* Merge branch 'master' of git://git.denx.de/u-boot-i2cTom Rini2016-12-20-2/+2
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| * i2c: mv_i2c.c: Correct address endiannessBradley Bolen2016-12-19-2/+2
| | | | | | | | | | | | | | | | | | | | 0c0f719ad2f46c8566a56daee37ebdb7c078c3b1 accidentally changed the endianness of the i2c read and write addresses. This was noticable when accessing EEPROMs that use 2 byte addressing as the LSB was being sent first. Signed-off-by: Bradley Bolen <bradleybolen@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de>
* | i2c: mxc: Make 'no gpio pinctrl state' print as debugJagan Teki2016-12-16-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some I2C bus devicetree nodes, doesn't require to have gpio pinctrl so replace the dev_info to debug so the print never comes on the console and for bus that uses gpio pinctrl anyway have dev_err. Before: ------ U-Boot> i2c dev 1 Setting bus to 1 i2c bus 1 at 0x21a4000, no gpio pinctrl state. After: ------ U-Boot> i2c dev 1 Setting bus to 1 Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: Peng Fan <peng.fan@nxp.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Heiko Schocher <hs@denx.de>
* | i2c: mxc: Print hex instead of decimal for bus addressJagan Teki2016-12-16-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Better to print the hex value for bus address instead of decimal, for more readbility on bus addressing. Before: ------ U-Boot> i2c dev 1 Setting bus to 1 i2c bus 1 at 35274752, no gpio pinctrl state. After: ------ U-Boot> i2c dev 1 Setting bus to 1 i2c bus 1 at 0x21a4000, no gpio pinctrl state. Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: Peng Fan <peng.fan@nxp.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Heiko Schocher <hs@denx.de>
* | i2c: Kconfig: Add SYS_I2C_MXC entryJagan Teki2016-12-16-0/+8
|/ | | | | | | | | | Added kconfig for SYS_I2C_MXC driver. Cc: Stefano Babic <sbabic@denx.de> Cc: Heiko Schocher <hs@denx.de> Cc: Matteo Lisi <matteo.lisi@engicam.com> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
* dm: i2c: Add a note to I2C drivers which need conversionSimon Glass2016-12-05-0/+42
| | | | | | | | Maintainers need to be notified more directly of the need to convert these drivers. Add a note to the top each affected file. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* samsung: i2c: Split the high-speed I2C code into a new driverSimon Glass2016-12-05-545/+591
| | | | | | | | | Now that driver model is used for I2C on all boards, we can split the high-speed code into its own driver. There is virtually no common code, and this significantly reduces confusion. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* samsung: i2c: Drop old code from I2C driverSimon Glass2016-12-05-583/+2
| | | | | | | Now that all boards use DM_I2C we can drop the old code. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
* sunxi: Rename CONFIG_SUNXI to CONFIG_ARCH_SUNXIJagan Teki2016-10-30-3/+3
| | | | | | | | | | | | CONFIG_SUNXI -> CONFIG_ARCH_SUNXI and removed CONFIG_SUNIX from config_whitelist.txt Cc: Simon Glass <sjg@chromium.org> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jagan Teki <jteki@openedev.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* Merge branch 'master' of git://git.denx.de/u-boot-atmelTom Rini2016-10-28-17/+1
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| * i2c: at91_i2c: Change error return -ENODEV to -EINVALWenyou Yang2016-10-28-1/+1
| | | | | | | | | | | | | | | | Change the error return value -ENODEV from to -EINVAL for more reasonable. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Heiko Schocher <hs@denx.de>
| * i2c: at91_i2c: Remove unnecessary clock callingWenyou Yang2016-10-28-16/+0
| | | | | | | | | | | | | | | | Due to the peripheral clock driver improvement, remove the unnecessary clock calling. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Heiko Schocher <hs@denx.de>
* | i2c: designware: Avoid overwriting the cmd_data registerMarek Vasut2016-10-24-6/+17
|/ | | | | | | | | | | | | | | | | | Make sure the driver writes the cmd_data register only once per read transfer instead of doing so potentially repeatedly. In case the read transfer didn't finish quickly enough, the loop in the driver code would spin fast enough to write the same value into the cmd_data register again before re-checking whether the transfer completed, which would cause another spurious read transfer on the bus. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Heiko Schocher <hs@denx.de> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Chin Liang See <clsee@altera.com>
* libfdt: Bring in upstream stringlist functionsSimon Glass2016-10-13-1/+1
| | | | | | | | | | | | | | These have now landed upstream. The naming is different and in one case the function signature has changed. Update the code to match. This applies the following upstream commits by Thierry Reding <treding@nvidia.com> : 604e61e fdt: Add functions to retrieve strings 8702bd1 fdt: Add a function to get the index of a string 2218387 fdt: Add a function to count strings Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: i2c: Fix cast of address to 32-bit valueSimon Glass2016-10-11-3/+3
| | | | | | | | This gives a build warning on 64-bit x86. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* cros_ec: Honor the google,remote-bus dt propertyMoritz Fischer2016-10-08-1/+23
| | | | | | | | | | | | Boards where ECs that use a I2C port != 0 specify this in the devicetree file via the google,remote-bus property. Previously this was ignored and hardcoded to port 0. Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: u-boot@lists.denx.de Acked-by: Simon Glass <sjg@chromium.org>
* i2c: tegra: only use new clock/reset APIsStephen Warren2016-09-27-57/+11
| | | | | | | | | | Now that the standard clock/reset APIs are available for all Tegra SoCs, convert the I2C driver to use them exclusively, and remove any references to the custom Tegra-specific APIs. Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* i2c: mvtwsi.c: Add support for Marvell Armada 7K/8KStefan Roese2016-09-26-0/+1
| | | | | | | | | | | | | | | By adding the "marvell,mv78230-i2c" compatible property, we can enable this I2C driver to support these new ARM64 chips as well. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Nadav Haklai <nadavh@marvell.com> Cc: Neta Zur Hershkovits <neta@marvell.com> Cc: Kostya Porotchkin <kostap@marvell.com> Cc: Omri Itach <omrii@marvell.com> Cc: Igal Liberman <igall@marvell.com> Cc: Haim Boot <hayim@marvell.com> Cc: Hanna Hawa <hannah@marvell.com> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: Validate read length in I2C commandjinghua2016-09-26-0/+5
| | | | | | | | | | | | | | | | | The I2C bus will get stuck when reading 0 byte. So we add validation of the read length in i2c_read(). This issue only occurs on read operation. Signed-off-by: jinghua <jinghua@marvell.com> 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> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: Enable runtime speed selection (standard vs fast mode)Stefan Roese2016-09-26-7/+38
| | | | | | | | | | | | | | | | | This patch adds runtime speed configuration to the mv_i2c driver. Currently standard (max 100kHz) and fast mode (max 400kHz) are supported. 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> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: Add DM supportStefan Roese2016-09-26-48/+136
| | | | | | | | | | | | | 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> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: Prepare driver for DM conversionStefan Roese2016-09-26-126/+141
| | | | | | | | | | | | | | | | To prepare for the DM conversion, we add a layer of compatibility functions to be used by both the legacy and the DM functions. 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> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: Remove CONFIG_HARD_I2CStefan Roese2016-09-26-2/+0
| | | | | | | | | | | | | | | CONFIG_HARD_I2C is not needed, lets remove it. 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> Cc: Heiko Schocher <hs@denx.de>
* i2c: mv_i2c.c: cosmetic: Coding style cleanupsStefan Roese2016-09-26-34/+34
| | | | | | | | | | | | | | | | Some mostly indentation coding style cleanups. Also, move this driver to use debug() for debug output. 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> Cc: Heiko Schocher <hs@denx.de>
* treewide: replace #include <asm/errno.h> with <linux/errno.h>Masahiro Yamada2016-09-23-9/+9
| | | | | | | | | | | 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>
* i2c: at91_i2c: Fix the wrong include fileWenyou Yang2016-09-13-1/+1
| | | | | | | Since the 'clk_client.h' doesn't exist, it should be 'clk.h'. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* rockchip: i2c: fix >32 byte writesJohn Keeping2016-09-13-2/+2
| | | | | | | | | The special handling of the chip address and register address must only happen before we send the data buffer, otherwise we will end up inserting both of these every 32 bytes. Signed-off-by: John Keeping <john@metanate.com> Acked-by: Simon Glass <sjg@chromium.org>
* rockchip: i2c: move register write out of inner loopJohn Keeping2016-09-13-2/+2
| | | | | | | | | | | There is no point in writing intermediate values to the txdata registers. Also add padding to the debug logging to make it easier to read when there are leading zeroes. Signed-off-by: John Keeping <john@metanate.com> Acked-by: Simon Glass <sjg@chromium.org>
* rockchip: i2c: use named constant when appropriateJohn Keeping2016-09-13-1/+1
| | | | | | | Make it clear that we are using the same value in two adjacent lines. Signed-off-by: John Keeping <john@metanate.com> Acked-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-i2cTom Rini2016-08-26-2/+2
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| * i2c: mvtwsi: Fix order of address bytes (high to low)Stefan Roese2016-08-26-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch f8a10ed1 [i2c: mvtwsi: Make address length variable] accidentally inverted the sequence of address bytes sent to the I2C device. This patch corrects this by sending the highest byte first and the lowest byte last again. Tested on theadorable Armada-XP board. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Mario Six <mario.six@gdsys.cc> Cc: Heiko Schocher <hs@denx.de>
* | ARM: tegra: remove stale nvidia, bpmp I2C DT propertyStephen Warren2016-08-25-10/+0
| | | | | | | | | | | | | | | | | | | | The nvidia,bpmp property is left over from an old BPMP I2C binding, and shouldn't be present. Remove it from the SoC DT file, and update the I2C driver not to parse it; the value wasn't used for anything any more anyway. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* | ARM: tegra: fix Tegra186 I2C clock nameStephen Warren2016-08-25-1/+1
|/ | | | | | | | The Tegra I2C binding dictates that the clock name for the Tegra I2C clock be "div-clk" not "i2c". Fix the Tegra186 DT and I2C driver to honor this. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
* i2c: intel_i2c: SMBus driver PCI addition (e.g. BayTrail)Stefan Roese2016-08-16-21/+269
| | | | | | | | | | | | | | | | | | | | | This patch adds support for the SMBus block read/write functionality. Other protocols like the SMBus quick command need to get added if this is needed. This patch also removed the SMBus related defines from the Ivybridge pch.h header. As they are integrated in this driver and should be used from here. This change is added in this patch to avoid compile breakage to keep the source git bisectable. Tested on a congatec BayTrail board to configure the SMSC2513 USB hub. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-atmelTom Rini2016-08-15-0/+426
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| * i2c: atmel: add i2c driverSongjun Wu2016-08-15-0/+426
| | | | | | | | | | | | | | | | Add i2c driver. Signed-off-by: Songjun Wu <songjun.wu@atmel.com> Reviewed-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
* | i2c: tegra: add standardized clk/reset API supportBryan Wu2016-08-15-4/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | clk/reset API was tested on T186 platform and previous chip like T210/T124 will still use the old APIs. Signed-off-by: Bryan Wu <pengw@nvidia.com> (swarren, simplified some ifdefs, removed indent level inside an ifdef) (swarren, added comment about the ifdefs) Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
* | i2c: add Tegra186 BPMP driverStephen Warren2016-08-15-0/+140
|/ | | | | | | | | | | On Tegra186, some I2C controllers are directly controlled by the main CPU, whereas others are controlled by the BPMP, and can only be accessed by the main CPU via IPC requests to the BPMP. This driver covers the latter case. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>