Commit d3f6b54f authored by Scott Worley's avatar Scott Worley Committed by Christopher Friedt
Browse files

Microchip: MEC172x clock control driver 



Implement a clock control driver for Microchip MEC172x handling
configuring the 32 KHz input sources for the PLL and peripheral-32k
clock domains. MEC172x differs from MEC152x. MEC152x had one 32K source
for both PLL and peripherals. MEC172x allows the two domains to use
independent 32 KHz sources. Device tree updated to provide addresses
of hardware used by the driver.

Signed-off-by: default avatarScott Worley <scott.worley@microchip.com>
parent f5b42d0a

boards/arm/mec172xevb_assy6906/mec172xevb_assy6906.dts

+4 −0
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@@ -27,6 +27,10 @@ 
	status = "okay";

};



&pcr {

	status = "okay";

};



&uart1 {

	status = "okay";

};

boards/arm/mec172xevb_assy6906/mec172xevb_assy6906_defconfig

+1 −0
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@@ -10,6 +10,7 @@ CONFIG_BOARD_MEC172XEVB_ASSY6906=y 


CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=96000000



CONFIG_CLOCK_CONTROL=y

CONFIG_SERIAL=y

CONFIG_CONSOLE=y

CONFIG_UART_CONSOLE=y

drivers/clock_control/CMakeLists.txt

+1 −0
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@@ -18,6 +18,7 @@ zephyr_sources_ifdef(CONFIG_CLOCK_CONTROL_RV32M1_PCC clock_control_rv32 
zephyr_sources_ifdef(CONFIG_CLOCK_CONTROL_ESP32               clock_control_esp32.c)

zephyr_sources_ifdef(CONFIG_CLOCK_CONTROL_LITEX               clock_control_litex.c)

zephyr_sources_ifdef(CONFIG_CLOCK_CONTROL_RCAR_CPG_MSSR       clock_control_rcar_cpg_mssr.c)

zephyr_sources_ifdef(CONFIG_CLOCK_CONTROL_MCHP_XEC            clock_control_mchp_xec.c)



if(CONFIG_CLOCK_CONTROL_STM32_CUBE)

if(CONFIG_SOC_SERIES_STM32MP1X)

drivers/clock_control/Kconfig

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Original line number Diff line number Diff line
@@ -52,4 +52,6 @@ source "drivers/clock_control/Kconfig.litex" 


source "drivers/clock_control/Kconfig.rcar"



source "drivers/clock_control/Kconfig.xec"



endif # CLOCK_CONTROL

drivers/clock_control/Kconfig.xec

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# Microchip XEC



# Copyright (c) 2021 Microchip Technology Inc.

# SPDX-License-Identifier: Apache-2.0



config CLOCK_CONTROL_MCHP_XEC

	bool "MCHP XEC PCR clock control driver"

	depends on SOC_SERIES_MEC172X

	help

	  Enable support for Microchip XEC PCR clock driver.

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