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drivers: clock: Microchip XEC clock driver add MEC15xx support

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Add support for Microchip MEC15xx to the XEC clock control driver.
MEC15xx 32KHz clock support uses the same 32KHz source for both the
PLL and peripherals. MEC152x does not include the PCR clock monitor
present in MEC172x.  MEC15xx and MEC172x support internal silicon
oscillator, parallel and single ended crystal inputs, and the
32KHZ_PIN input. MEC152x supports fall back to internal silicon
OSC when VTR and 32KHZ_PIN are turned off. Therefore in MEC152x the
internal silicon oscillator can only be disabled if using an external
32KHz which is always on. For MEC152x the driver will only use the
PLL source clock device tree value.

Signed-off-by: Jay Vasanth <jay.vasanth@microchip.com>
This commit is contained in:
Jay Vasanth 2022-11-16 12:07:42 -05:00 • committed by Carles Cufí
commit c7e0d727d7
9 changed files with 138 additions and 143 deletions
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4
boards/arm/mec1501modular_assy6885/mec1501modular_assy6885.dts
View file

@ -49,6 +49,10 @@
cpu-power-states = <&idle &suspend_to_ram>;
};
&pcr {
status = "okay";
};
&uart1 {
status = "okay";
current-speed = <115200>;

2
boards/arm/mec1501modular_assy6885/mec1501modular_assy6885_defconfig
View file

@ -12,6 +12,8 @@ CONFIG_SOC_MEC1501_VCI_PINS_AS_GPIOS=n
CONFIG_BOARD_MEC1501MODULAR_ASSY6885=y
CONFIG_RTOS_TIMER=y
CONFIG_CLOCK_CONTROL=y
CONFIG_PINCTRL=y
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y
CONFIG_SERIAL=y

4
boards/arm/mec15xxevb_assy6853/mec15xxevb_assy6853.dts
View file

@ -77,6 +77,10 @@
cpu-power-states = <&idle &suspend_to_ram>;
};
&pcr {
status = "okay";
};
&uart2 {
status = "okay";
current-speed = <115200>;

2
boards/arm/mec15xxevb_assy6853/mec15xxevb_assy6853_defconfig
View file

@ -10,7 +10,9 @@ CONFIG_SOC_MEC1501_VTR3_1_8V=y
CONFIG_BOARD_MEC15XXEVB_ASSY6853=y
CONFIG_RTOS_TIMER=y
CONFIG_CLOCK_CONTROL=y
CONFIG_CONSOLE=y
CONFIG_PINCTRL=y
CONFIG_UART_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_GPIO=y