Remove useless operands since 'bit' field of npcx_clk_cfg structure is
only 3-bit depth and always under 8.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
This CL introduces power management driver that improves the efficiency
of ec operation by adjusting the chip’s power consumption to the level
of activity required by the application in npcx series.
The following list summarizes the main properties of the various chip
power states. Please refer the power.c file for more detail.
Main power states in npcx series include:
- Active: Core, RAM and modules operate at the clocks generated by PLL.
- Idle: Enter this state when the Core executes WFI or WFE instruction.
- Sleep: clock is stopped for most of modules but PLL is enabled.
- Deep Sleep: As Sleep mode but PLL is disabled.
- Standby: All power rails are turned off besides standby and battery
power rails.
And this CL implements one power state, PM_STATE_SUSPEND_TO_IDLE, with
two sub-states for Zephyr power management system.
Sub-state 0 - "Deep Sleep" mode with “Instant” wake-up if residency
time is greater or equal to 1 ms
Sub-state 1 - "Deep Sleep" mode with "Standard" wake-up if residency
time is greater or equal to 201 ms
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
The NPCX clock driver was already using devicetree, just need to make a
small tweak to use DEVICE_DT_INST_DEFINE and update NPCX_CLK_CTRL_NAME
to match the label for the "nuvoton,npcx-pcc" clock controller.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert driver(s) to DEVICE_DEFINE instead of DEVICE_AND_API_INIT
so we can deprecate DEVICE_AND_API_INIT in the future.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add const modifier for hal instances, clock devices pointer, and module
base address in npcx drivers to prevent driver functions change them
unexpectedly.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
Fixed 'line length exceeds 80 columns' warning by shortening the clock
controller device name from NPCX_CLOCK_CONTROL_NAME to
NPCX_CLK_CTRL_NAME.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Replace npcx register base address type, uint32_t, with uintptr_t.
It is easier to know what type of base address and for linear
addresses treated as integral values.
This CL also modified IS_BIT_SET() macro function to fit MISRA code
guidelines.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
Add clock controller support for Nuvoton NPCX series. This CL includes:
1. Add clock controller device tree declarations.
2. Introduce clock-cells in yaml file clock tree to get module's source
clock and turn off/on the its clock
3. Clock controller driver implementation.
Signed-off-by: Mulin Chao <MLChao@nuvoton.com>
