Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "New stuff from the I2C world:

   - in the core, getting irqs from ACPI is now similar to OF

   - new driver for MediaTek MT7621/7628/7688 SoCs

   - bcm2835, i801, and tegra drivers got some more attention

   - GPIO API cleanups

   - cleanups in the core headers

   - lots of usual driver updates"

* 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (74 commits)
  i2c: mt7621: Fix platform_no_drv_owner.cocci warnings
  i2c: cpm: remove casting dma_alloc
  dt-bindings: i2c: sun6i-p2wi: Fix the binding example
  dt-bindings: i2c: mv64xxx: Fix the example compatible
  i2c: i801: Documentation update
  i2c: i801: Add support for Intel Tiger Lake
  i2c: i801: Fix PCI ID sorting
  dt-bindings: i2c-stm32: document optional dmas
  i2c: i2c-stm32f7: Add I2C_SMBUS_I2C_BLOCK_DATA support
  i2c: core: Tidy up handling of init_irq
  i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq
  i2c: core: Move ACPI IRQ handling to probe time
  i2c: acpi: Factor out getting the IRQ from ACPI
  i2c: acpi: Use available IRQ helper functions
  i2c: core: Allow whole core to use i2c_dev_irq_from_resources
  eeprom: at24: modify a comment referring to platform data
  dt-bindings: i2c: omap: Add new compatible for J721E SoCs
  dt-bindings: i2c: mv64xxx: Add YAML schemas
  dt-bindings: i2c: sun6i-p2wi: Add YAML schemas
  i2c: mt7621: Add MediaTek MT7621/7628/7688 I2C driver
  ...

Documentation/i2c/busses/i2c-i801

@@ -37,6 +37,8 @@ Supported adapters:
   * Intel Cedar Fork (PCH)
   * Intel Ice Lake (PCH)
   * Intel Comet Lake (PCH)
+  * Intel Elkhart Lake (PCH)
+  * Intel Tiger Lake (PCH)
    Datasheets: Publicly available at the Intel website
 
 On Intel Patsburg and later chipsets, both the normal host SMBus controller
@@ -58,6 +60,7 @@ question doesn't work as intended for whatever reason. Bit values:
  0x02  disable the block buffer
  0x08  disable the I2C block read functionality
  0x10  don't use interrupts
+ 0x20  disable SMBus Host Notify
 
 
 Description
@@ -88,7 +91,7 @@ SMBus controller.
 Process Call Support
 --------------------
 
-Not supported.
+Block process call is supported on the 82801EB (ICH5) and later chips.
 
 
 I2C Block Read Support
@@ -118,16 +121,15 @@ BIOS to enable it, it means it has been hidden by the BIOS code. Asus is
 well known for first doing this on their P4B motherboard, and many other
 boards after that. Some vendor machines are affected as well.
 
-The first thing to try is the "i2c_ec" ACPI driver. It could be that the
+The first thing to try is the "i2c-scmi" ACPI driver. It could be that the
 SMBus was hidden on purpose because it'll be driven by ACPI. If the
-i2c_ec driver works for you, just forget about the i2c-i801 driver and
-don't try to unhide the ICH SMBus. Even if i2c_ec doesn't work, you
+i2c-scmi driver works for you, just forget about the i2c-i801 driver and
+don't try to unhide the ICH SMBus. Even if i2c-scmi doesn't work, you
 better make sure that the SMBus isn't used by the ACPI code. Try loading
-the "fan" and "thermal" drivers, and check in /proc/acpi/fan and
-/proc/acpi/thermal_zone. If you find anything there, it's likely that
-the ACPI is accessing the SMBus and it's safer not to unhide it. Only
-once you are certain that ACPI isn't using the SMBus, you can attempt
-to unhide it.
+the "fan" and "thermal" drivers, and check in /sys/class/thermal. If you
+find a thermal zone with type "acpitz", it's likely that the ACPI is
+accessing the SMBus and it's safer not to unhide it. Only once you are
+certain that ACPI isn't using the SMBus, you can attempt to unhide it.
 
 In order to unhide the SMBus, we need to change the value of a PCI
 register before the kernel enumerates the PCI devices. This is done in