i3c: add I3C controller driver for MCUX

This adds a very basic driver to utilize the I3C IP block
on MCUX (e.g. RT685). Note that, for now, this only supports
being the active controller on the bus.

Origin: NXP MCUXpresso SDK
License: BSD 3-Clause
URL: https://github.com/zephyrproject-rtos/hal_nxp
Commit: 2302a1e
Purpose: Enabling the I3C controller on RT685.

Signed-off-by: Daniel Leung <[email protected]>

Author: dcpleung

drivers/clock_control/clock_control_mcux_syscon.c

@@ -148,6 +148,12 @@ static int mcux_lpc_syscon_clock_control_get_subsys_rate(
 	case MCUX_BUS_CLK:
 		*rate = CLOCK_GetFreq(kCLOCK_BusClk);
 		break;
+
+#if defined(CONFIG_I3C_MCUX)
+	case MCUX_I3C_CLK:
+		*rate = CLOCK_GetI3cClkFreq();
+		break;
+#endif
 	}
 
 	return 0;

drivers/i3c/CMakeLists.txt

@@ -18,3 +18,8 @@ zephyr_library_sources_ifdef(
   CONFIG_I3C_IBI_WORKQUEUE
   i3c_ibi_workq.c
 )
+
+zephyr_library_sources_ifdef(
+  CONFIG_I3C_MCUX
+  i3c_mcux.c
+)

drivers/i3c/Kconfig

@@ -98,4 +98,6 @@ config I3C_CONTROLLER_INIT_PRIORITY
 
 comment "Device Drivers"
 
+rsource "Kconfig.nxp"
+
 endif # I3C

drivers/i3c/Kconfig.nxp

@@ -0,0 +1,19 @@
+# Copyright (c) 2022 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+DT_COMPAT_NXP_MCUX_I3C := nxp,mcux-i3c
+
+module = I3C_MCUX
+module-str = i3c-mcux
+source "subsys/logging/Kconfig.template.log_config"
+
+config I3C_MCUX
+	bool "MCUX I3C driver"
+	depends on HAS_MCUX
+	depends on DT_HAS_NXP_MCUX_I3C_ENABLED
+	select PINCTRL
+	select I3C_IBI_WORKQUEUE if I3C_USE_IBI
+	default y
+	help
+	  Enable mcux I3C driver.