i3c: add cdns i3c driver

This gives initial support to the cadence i3c controller

Signed-off-by: Ryan McClelland <ryanmcclelland@meta.com>

CODEOWNERS

@@ -307,6 +307,7 @@
 /drivers/i2s/i2s_ll_stm32*                @avisconti
 /drivers/i2s/*nrfx*                       @anangl
 /drivers/i3c/                             @dcpleung
+/drivers/i3c/i3c_cdns.c                   @XenuIsWatching
 /drivers/ieee802154/                      @rlubos @tbursztyka
 /drivers/ieee802154/*b91*                 @andy-liu-telink
 /drivers/ieee802154/ieee802154_nrf5*      @jciupis

drivers/i3c/CMakeLists.txt

@@ -23,3 +23,8 @@ zephyr_library_sources_ifdef(
   CONFIG_I3C_MCUX
   i3c_mcux.c
 )
+
+zephyr_library_sources_ifdef(
+  CONFIG_I3C_CADENCE
+  i3c_cdns.c
+)

drivers/i3c/Kconfig

@@ -99,5 +99,6 @@ config I3C_CONTROLLER_INIT_PRIORITY
 comment "Device Drivers"
 
 rsource "Kconfig.nxp"
+rsource "Kconfig.cdns"
 
 endif # I3C

drivers/i3c/Kconfig.cdns

@@ -0,0 +1,15 @@
+# Copyright (c) 2022 Meta Platforms, Inc. and its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+module = I3C_CADENCE
+module-str = i3c-cadence
+source "subsys/logging/Kconfig.template.log_config"
+
+config I3C_CADENCE
+	bool "Cadence I3C driver"
+	select I3C_IBI_WORKQUEUE if I3C_USE_IBI
+	depends on DT_HAS_CDNS_I3C_ENABLED
+	default y
+	help
+	  Enable Cadence I3C driver.

dts/bindings/i3c/cdns,i3c.yaml

@@ -0,0 +1,21 @@
+# Copyright (c) 2022 Meta Platforms, Inc. and its affiliates.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+description: Cadence I3C controller
+
+compatible: "cdns,i3c"
+
+include: [i3c-controller.yaml]
+
+properties:
+    reg:
+      required: true
+
+    interrupts:
+      required: true
+
+    input-clock-frequency:
+      type: int
+      required: true
+      description: The controller input clock frequency