BMC/Intel-BMC/linux.git/drivers/i2c, branch dev-5.8-intel

i2c: aspeed: clear slave addresses in probe

2020-12-18T17:03:46+00:00

Initial value of I2CD18 is undefined according to the datasheet so this commit adds the I2CD18 register clearing code into bus initialization function to prevent any unexpected slave match events. Signed-off-by: Jae Hyun Yoo Change-Id: I6c6cadeaf6fefcf74eba0d96c49986a810ccbb51

fixup! i2c: Add mux hold/unhold msg types

2020-12-16T22:05:52+00:00

This commit fixes a deadlock case by replacing a del_timer_sync call with a del_timer in timer handler function. This issue was not observed in previous platform because the previous UP kernel calls del_timer instead of del_timer_sync but in SMP kernel, it calls del_timer_sync actually. Signed-off-by: Jae Hyun Yoo Change-Id: I0633acafb5023c50494e41c82c65c0acaa3bc068

Merge v5.8.17, commit '6d07b544ce203a684d9ca52635dcf2f4fc89b7d4' into dev-5.8-intel

2020-11-05T01:31:53+00:00

Merge tag 'v5.8.17' into dev-5.8

2020-10-30T02:37:00+00:00

This is the 5.8.17 stable release Signed-off-by: Joel Stanley

i2c: core: Restore acpi_walk_dep_device_list() getting called after registering the ACPI i2c devs

2020-10-29T09:08:17+00:00

[ Upstream commit 8058d69905058ec8f467a120b5ec5bb831ea67f3 ] Commit 21653a4181ff ("i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices()")'s intention was to only move the acpi_install_address_space_handler() call to the point before where the ACPI declared i2c-children of the adapter where instantiated by i2c_acpi_register_devices(). But i2c_acpi_install_space_handler() had a call to acpi_walk_dep_device_list() hidden (that is I missed it) at the end of it, so as an unwanted side-effect now acpi_walk_dep_device_list() was also being called before i2c_acpi_register_devices(). Move the acpi_walk_dep_device_list() call to the end of i2c_acpi_register_devices(), so that it is once again called *after* the i2c_client-s hanging of the adapter have been created. This fixes the Microsoft Surface Go 2 hanging at boot. Fixes: 21653a4181ff ("i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices()") Link: https://bugzilla.kernel.org/show_bug.cgi?id=209627 Reported-by: Rainer Finke Reported-by: Kieran Bingham Suggested-by: Maximilian Luz Tested-by: Kieran Bingham Signed-off-by: Hans de Goede Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: rcar: Auto select RESET_CONTROLLER

2020-10-29T09:08:04+00:00

[ Upstream commit 5b9bacf28a973a6b16510493416baeefa2c06289 ] The i2c-rcar driver utilizes the Generic Reset Controller kernel feature, so select the RESET_CONTROLLER option when the I2C_RCAR option is selected with a Gen3 SoC. Fixes: 2b16fd63059ab9 ("i2c: rcar: handle RXDMA HW behaviour on Gen3") Signed-off-by: Dirk Behme Signed-off-by: Andy Lowe [erosca: Add "if ARCH_RCAR_GEN3" per Wolfram's request] Signed-off-by: Eugeniu Rosca Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin

i2c: owl: Clear NACK and BUS error bits

2020-10-14T09:55:50+00:00

commit f5b3f433641c543ebe5171285a42aa6adcdb2d22 upstream. When the NACK and BUS error bits are set by the hardware, the driver is responsible for clearing them by writing "1" into the corresponding status registers. Hence perform the necessary operations in owl_i2c_interrupt(). Fixes: d211e62af466 ("i2c: Add Actions Semiconductor Owl family S900 I2C driver") Reported-by: Manivannan Sadhasivam Signed-off-by: Cristian Ciocaltea Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman

i2c: meson: fixup rate calculation with filter delay

2020-10-14T09:55:50+00:00

commit 1334d3b4e49e35d8912a7c37ffca4c5afb9a0516 upstream. Apparently, 15 cycles of the peripheral clock are used by the controller for sampling and filtering. Because this was not known before, the rate calculation is slightly off. Clean up and fix the calculation taking this filtering delay into account. Fixes: 30021e3707a7 ("i2c: add support for Amlogic Meson I2C controller") Signed-off-by: Nicolas Belin Signed-off-by: Jerome Brunet Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman

i2c: meson: keep peripheral clock enabled

2020-10-14T09:55:50+00:00

commit 79e137b1540165f788394658442284d55a858984 upstream. SCL rate appears to be different than what is expected. For example, We get 164kHz on i2c3 of the vim3 when 400kHz is expected. This is partially due to the peripheral clock being disabled when the clock is set. Let's keep the peripheral clock on after probe to fix the problem. This does not affect the SCL output which is still gated when i2c is idle. Fixes: 09af1c2fa490 ("i2c: meson: set clock divider in probe instead of setting it for each transfer") Signed-off-by: Jerome Brunet Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman

i2c: meson: fix clock setting overwrite

2020-10-14T09:55:49+00:00

commit 28683e847e2f20eed22cdd24f185d7783db396d3 upstream. When the slave address is written in do_start(), SLAVE_ADDR is written completely. This may overwrite some setting related to the clock rate or signal filtering. Fix this by writing only the bits related to slave address. To avoid causing unexpected changed, explicitly disable filtering or high/low clock mode which may have been left over by the bootloader. Fixes: 30021e3707a7 ("i2c: add support for Amlogic Meson I2C controller") Signed-off-by: Jerome Brunet Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman