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drivers: flash: atmel sam0: Convert to use device tree

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Convert Atmel SAM0 flash driver to use device tree to get the flash
controller name and base address.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2018-01-19 15:01:01 -06:00 • committed by Kumar Gala
commit 2dfee62a5e
5 changed files with 43 additions and 15 deletions
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6
arch/arm/soc/atmel_sam0/samd/dts.fixup Normal file
View file

@ -0,0 +1,6 @@
/* SoC level DTS fixup file */
#define FLASH_DEV_BASE_ADDRESS ATMEL_SAM0_NVMCTRL_41004000_BASE_ADDRESS_0
#define FLASH_DEV_NAME ATMEL_SAM0_NVMCTRL_41004000_LABEL
/* End of SoC Level DTS fixup file */

7
drivers/flash/Kconfig.sam0
View file

@ -13,13 +13,6 @@ menuconfig SOC_FLASH_SAM0
help
Enable the Atmel SAM0 series internal flash driver.
config SOC_FLASH_SAM0_DEV_NAME
string "Flash device name"
depends on SOC_FLASH_SAM0
default "FLASH_0"
help
Specify the device name for the flash driver.
config SOC_FLASH_SAM0_EMULATE_BYTE_PAGES
bool
prompt "Emulate byte-sized pages"

2
drivers/flash/flash_sam0.c
View file

@ -371,6 +371,6 @@ static const struct flash_driver_api flash_sam0_api = {
static struct flash_sam0_data flash_sam0_data_0;
DEVICE_AND_API_INIT(flash_sam0, CONFIG_SOC_FLASH_SAM0_DEV_NAME,
DEVICE_AND_API_INIT(flash_sam0, FLASH_DEV_NAME,
flash_sam0_init, &flash_sam0_data_0, NULL, POST_KERNEL,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &flash_sam0_api);

24
dts/arm/atmel/samd21.dtsi
View file

@ -18,13 +18,6 @@
};
};
flash0: flash@0 {
compatible = "soc-nv-flash";
label = "FLASH_0";
reg = <0 0x40000>;
write-block-size = <64>;
};
sram0: memory@20000000 {
device_type = "memory";
compatible = "mmio-sram";
@ -32,6 +25,23 @@
};
soc {
nvmctrl: nvmctrl@41004000 {
compatible = "atmel,sam0-nvmctrl";
label = "FLASH_CTRL";
reg = <0x40022000 0x22>;
interrupts = <5 0>;
#address-cells = <1>;
#size-cells = <1>;
flash0: flash@0 {
compatible = "soc-nv-flash";
label = "FLASH_0";
reg = <0 0x40000>;
write-block-size = <64>;
};
};
wdog: watchdog@40001000 {
compatible = "atmel,sam0-watchdog";
reg = <0x40001000 9>;

19
dts/bindings/flash_controller/atmel,sam0-nvmctrl.yaml Normal file
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@ -0,0 +1,19 @@
---
title: Atmel SAM0 Non-Volatile Memory Controller
id: atmel,sam0-nvmctrl
version: 0.1
description: >
This binding gives a base representation of the Atmel SAM0 NVMC
inherits:
!include flash-controller.yaml
properties:
compatible:
type: string
category: required
description: compatible strings
constraint: "atmel,sam0-nvmctrl"
...