zephyr/dts/bindings/clock/st,stm32mp1-rcc.yaml

# Copyright (c) 2021, Linaro ltd
# SPDX-License-Identifier: Apache-2.0

description: |
  STM32MP1 Reset and Clock controller node.
  On STM32MP1 platforms, clock control configuration is performed on A9 side.
  As a consequence, the only property to be set in devicetree node is the
  clock-frequency (mlhclk_ck).

compatible: "st,stm32mp1-rcc"

include:
  - name: st,stm32-rcc.yaml
    property-blocklist:
      - ahb-prescaler
      - apb1-prescaler
      - apb2-prescaler
      - undershoot-prevention
dts/arm: stm32mp1: Add compatible for mp1 rcc node Add a dedicated compatible for STM32MP1 clock control node. Since, on such platform, clock configuration is done on A9 side, only the clock-frequency property is available. Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org> 2021-10-20 22:35:08 +08:00			`# Copyright (c) 2021, Linaro ltd`
			`# SPDX-License-Identifier: Apache-2.0`

			`description: \|`
			`STM32MP1 Reset and Clock controller node.`
			`On STM32MP1 platforms, clock control configuration is performed on A9 side.`
			`As a consequence, the only property to be set in devicetree node is the`
			`clock-frequency (mlhclk_ck).`

			`compatible: "st,stm32mp1-rcc"`

			`include:`
			`- name: st,stm32-rcc.yaml`
			`property-blocklist:`
			`- ahb-prescaler`
			`- apb1-prescaler`
			`- apb2-prescaler`
dts: stm32: Add rcc prop undershoot-prevention On some parts, it could be required to use steps before applying highest frequencies. This was previously done as part of LL_PLL_ConfigSystemClock_FOO utility functions which are no more used. Use device tree to mention when this is required and implement it in stm32_clock_control_init(). Additionally, fix the calls tp LL_RCC_SetAHBPrescaler, which require use of ahb_prescaler helper. Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org> 2022-03-25 18:37:48 +08:00			`- undershoot-prevention`