drivers: flash: silabs: Add low power write support (dba1c4bb) · Commits · Wenxi XU / zephyr

drivers/flash/soc_flash_silabs_series2.c

+7 −0

Changes for drivers/flash/soc_flash_silabs_series2.c: 7 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@ struct flash_silabs_data {
		struct flash_silabs_config {
		struct flash_parameters flash_parameters;
		struct flash_pages_layout page_layout;
		bool lpwrite;
		};

		static bool flash_silabs_read_range_is_valid(off_t offset, uint32_t size)
		@@ -191,9 +192,14 @@ static int flash_silabs_get_size(const struct device dev, uint64_t size)
		static int flash_silabs_init(const struct device *dev)
		{
		struct flash_silabs_data *const dev_data = dev->data;
		const struct flash_silabs_config *config = dev->config;

		MSC_Init();

		if (config->lpwrite) {
		MSC->WRITECTRL_SET = MSC_WRITECTRL_LPWRITE;
		}

		/* Lock the MSC module. */
		flash_silabs_write_protection(true);

		@@ -236,6 +242,7 @@ static const struct flash_silabs_config flash_silabs_config_0 = {
		DT_PROP(SOC_NV_FLASH_NODE, erase_block_size),
		.pages_size = DT_PROP(SOC_NV_FLASH_NODE, erase_block_size),
		},
		.lpwrite = DT_INST_PROP(0, low_power_write),
		};
		/* clang-format on */

+6 −0

Changes for dts/bindings/flash_controller/silabs,series2-flash-controller.yaml: 6 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -6,3 +6,9 @@ description: Silicon Labs Series 2 flash controller
		compatible: "silabs,series2-flash-controller"

		include: flash-controller.yaml

		properties:
		low-power-write:
		type: boolean
		description: \|
		Reduce current consumption during write, doubling write time

0 → 100644

+13 −0

Changes for tests/drivers/flash/common/boards/xg24_rb4187c_lpwrite.overlay: 13 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2025 Silicon Laboratories Inc.
		* SPDX-License-Identifier: Apache-2.0
		*/

		&dma0 {
		status = "okay";
		};

		&msc {
		dmas = <&dma0 DMA_REQSEL_MSCWDATA>;
		low-power-write;
		};

+7 −0

Changes for tests/drivers/flash/common/testcase.yaml: 7 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -99,3 +99,10 @@ tests:
		- xg24_rb4187c
		extra_configs:
		- CONFIG_DMA=y
		drivers.flash.common.silabs.dma.lpwrite:
		platform_allow:
		- xg24_rb4187c
		extra_configs:
		- CONFIG_DMA=y
		extra_args:
		- DTC_OVERLAY_FILE=boards/xg24_rb4187c_lpwrite.overlay