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History for barebox / drivers / i2c

2020-08-03	c667f8c Browse files » i2c: stm32: support new st,stm32mp15-i2c compatible ... Linux v5.8-rc1 has gained support for the FastMode+ registers on the stm32mp15, but those are incompatible between the stm32mp15 and the stm32f7, so a new compatible was introduced. The old compatible was replaced for the MP15 SoC, breaking I2C in barebox. Add the new compatible to fix this. Unlike Linux, we just use the same setup parameters as for the stm32f7. This is ok as long we don't want to support FastMode+. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 22 Jul 2020 Sascha Hauer committed on 3 Aug 2020
2020-07-14	f5c5f8a Browse files » treewide: Convert files covered by ARM copyright to SPDX ... According to Marc Zyngier, former employee at ARM, the company owns the copyright for code created by its employees. Convert accordingly to SPDX with the usual rearrangements. Also dropped Marc's email address which doesn't work any more. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Uwe Kleine-König authored on 11 Jul 2020 Sascha Hauer committed on 14 Jul 2020
	5e57f52 Browse files » i2c: designware: use proper type for writel argument ... We need to write DW_IC_ENABLE_ENABLE (1 << 0) to the register to enable, but instead we were writing true. This happens to work, but is quite unusual. Make the code more readable. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 6 Jul 2020 Sascha Hauer committed on 14 Jul 2020
	5fe4c6d Browse files » ARM: stm32mp: depend on ARCH_STM32MP for SoC drivers ... The i2c, MCI and reset controller peripherals are STM32-specific. There is no reason to ask uses on oldconfig about it, thus make them depend on ARCH_STM32MP \|\| COMPILE_TEST. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 2 Jul 2020 Sascha Hauer committed on 14 Jul 2020
2020-05-20	202b615 Browse files » treewide: replace commas with semicolons where appropriate ... Found by searching drivers/ arch/ common/ and lib/ for /^\s+[^."/\\[\s\{\(A-Z][^\[\{\(]=[^\{\(]+,$/ Because the comma has the lowest precedence in C, this shouldn't result in any functional change. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 17 May 2020 Sascha Hauer committed on 20 May 2020
2020-04-01	1437676 Browse files » i2c: Port of_find_i2c_device_by_node() from Linux ... Port of_find_i2c_device_by_node() from Linux in order to allow looking i2c_client up by corresponding DT node. Useful for interacting with identical raw/driverless I2C devices that are not found on the same bus between board variants. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 31 Mar 2020 Sascha Hauer committed on 1 Apr 2020
2020-02-19	d19adc5 Browse files » I2C: i.MX: Add early i2c support for i.MX8M ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 19 Feb 2020
2020-02-12	c72aac9 Browse files » i2c: tegra: correct error message ... reset_control_get returns NULL when the controller reset is missing. The error pointer is used for malformed reset controller specification. Correct the message accordingly. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 10 Feb 2020 Sascha Hauer committed on 12 Feb 2020
2019-12-09	06f66d8 Browse files » Merge branch 'for-next/stm32' Sascha Hauer committed on 9 Dec 2019
2019-12-09	77d783a Browse files » Merge branch 'for-next/randfixes' Sascha Hauer committed on 9 Dec 2019
2019-12-02	9e477e2 Browse files » i2c: always walk down into i2c/busses Makefile ... Otherwise CONFIG_I2C_IMX_EARLY won't be built if !CONFIG_I2C even though it has no direct dependency on the i2c core. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 29 Nov 2019 Sascha Hauer committed on 2 Dec 2019
2019-11-25	1d9ee69 Browse files » i2c: gpio: use of_get_named_gpio() instead of of_get_named_gpio_flags() ... Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Antony Pavlov authored on 20 Nov 2019 Sascha Hauer committed on 25 Nov 2019
2019-11-13	76f136d Browse files » i2c: stm32: use device_reset_us helper instead of open-coding ... The exact sequence is already available in form of device_reset_us. Make use of it. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 12 Nov 2019 Sascha Hauer committed on 13 Nov 2019
2019-10-14	a6438ad Browse files » i2c-mux-pca954x: Add support for "i2c-mux-idle-disconnect" ... Add support for "i2c-mux-idle-disconnect" binding to match the behavior, already present in upstream kernel driver. This feature is a must have for I2C bus topologies with multiple muxes connected to child segments containing slaves with identical addresses (e.g. ZII's SCU4) Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 8 Oct 2019 Sascha Hauer committed on 14 Oct 2019
2019-09-12	45d273f Browse files » Merge branch 'for-next/stm32' Sascha Hauer committed on 12 Sep 2019
2019-09-09	f49b072 Browse files » i2c: add stm32f7 I2C adapter driver ... This patch adds initial support for the STM32F7 I2C controller. It was tested to work with the STM32MP157C. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 9 Sep 2019 Sascha Hauer committed on 9 Sep 2019
	f1bdb26 Browse files » i2c: port Linux i2c_parse_fw_timings ... Linux has a generic function for extracting i2c timings parameters from device-associated firmware nodes. Port this function to barebox, but have it only work on device tree nodes for now. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 9 Sep 2019 Sascha Hauer committed on 9 Sep 2019
	c1388ea Browse files » i2c/pca954x: Initialize the mux to disconnected state ... Port of a Linux kernel commit `cd823db` pca954x power-on default is channel 0 connected. If multiple pca954x muxes are connected to the same physical I2C bus, the parent bus will see channel 0 devices behind both muxes by default. This is bad. Scenario: -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50 \| I2C-bus-1 --- \| -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50 1. Load I2C bus driver: creates I2C-bus-1 2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111 3. Load eeprom driver 4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default. Fix: Initialize pca954x to disconnected state in pca954x_probe() Signed-off-by: Petri Gynther <pgynther@google.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 7 Sep 2019 Sascha Hauer committed on 9 Sep 2019
2019-08-30	69a014f Browse files » i2c-mux-pca954x: remove use of uninitialized variable ... force isn't used except to print its uninitialized value in an error path. Drop it. Signed-off-by: Ahmad Fatoum <ahmad@a3f.at> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 22 Aug 2019 Sascha Hauer committed on 30 Aug 2019
2019-08-15	20d9c22 Browse files » ARM: i.MX: scb9328: refurbish board suport ... - switch the i.MX1 based scb9328 board to device tree - Remove scb9328_defconfig and enable scb9328 board support in imx_defconfig - Remove old environment and switch to new default environment Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Aug 2019
2019-06-26	a94a9bf Browse files » i2c: gpio: add sda/scl-gpios property support ... The gpios property is marked as deprecated since kernel 4.15 so we should support the "new" mechanism too. The new mechanism has a higher priority than the deprecated one. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Marco Felsch authored on 17 Jun 2019 Sascha Hauer committed on 26 Jun 2019
2019-06-13	5c88c98 Browse files » treewide: remove stale mentions of CONFIG_OF in comments ... barebox doesn't define a CONFIG_OF kconfig option, but CONFIG_OFTREE for the device tree handling and CONFIG_OFDEVICE for probing devices out of the device tree. Replace comment mentions of CONFIG_OF with mentions of either as appropriate. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 11 Jun 2019 Sascha Hauer committed on 13 Jun 2019
2019-04-09	9047e06 Browse files » Merge branch 'for-next/misc' Sascha Hauer committed on 9 Apr 2019
2019-03-21	43e02c5 Browse files » treewide: surround Kconfig file paths with double quotes ... Based on Linux commit `8636a1f` This will be needed when you sync Kconfig with Linux 5.0 or later. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Masahiro Yamada authored on 20 Mar 2019 Sascha Hauer committed on 21 Mar 2019
2019-03-13	cb0eea7 Browse files » i2c: i.MX: Add layerscape support ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 13 Mar 2019
2019-03-04	f9b18e5 Browse files » i2c: i.MX: Add early driver for use in PBL ... i2c is used in SPD EEPROMs and thus needed very early before barebox is up. This patch adds a i.MX i2c driver variant for use in PBL. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Mar 2019
2019-02-27	3f5fa1a Browse files » i2c: i.MX: Create header file for register defines ... We'll add a stripped down driver variant for use in PBL. To share the register defines add a header file for them. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Feb 2019
	f8c4f90 Browse files » i2c: i.MX: Read clock-frequency from device tree ... We speed up the clock frequency only if probed via platform_data. Additionally honour the "clock-frequency" property. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Feb 2019
	39ed101 Browse files » i2c: i.MX: remove unused define ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Feb 2019
	43dd6b0 Browse files » i2c: i.MX: stop after read only in last transfer of a message ... Following the Linux driver the controller should be stopped in the read transfer path only after the last transfer of a message, but not when other transfers of the same message are following. Implement this behaviour for the barebox driver aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Feb 2019