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clocks: atmel: sam0: Fix gclk and mclk clock bindings

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The Atmel SAM0 SoC enable peripherals clocks in distinct places: PM and
MCLK. The old devices had defined the peripheral clock enable bit at PM.
On the newer devices this was extracted on a dedicated memory section
called Master Clock (MCLK). This change excludes the dedicated bindings
in favor of a generic approach that cover all cases.

Now the clocks properties is complemented by the atmel,assigned-clocks
property. It gives the liberty to user to customize the clock source
from a generic clock or configure the direct connections.

All peripherals drivers were reworked with the newer solution.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
This commit is contained in:
Gerson Fernando Budke 2024-12-14 11:56:38 +01:00 • committed by Benjamin Cabé
commit ea7922195b
44 changed files with 882 additions and 574 deletions
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26
soc/atmel/sam0/common/atmel_sam0_dt.h
View file

@ -14,12 +14,28 @@
/* clang-format off */
/* Helper macro to get MCLK register address for corresponding
* that has corresponding clock enable bit.
#define ATMEL_SAM0_DT_INST_CELL_REG_ADDR_OFFSET(n, cell) \
(volatile uint32_t *) \
(DT_REG_ADDR(DT_INST_PHANDLE_BY_NAME(n, clocks, cell)) + \
DT_INST_CLOCKS_CELL_BY_NAME(n, cell, offset))
#define ATMEL_SAM0_DT_INST_CELL_PERIPH_MASK(n, name, cell) \
BIT(DT_INST_CLOCKS_CELL_BY_NAME(n, name, cell))
/* Helper macro to get register address that control peripheral clock
* enable bit.
*/
#define MCLK_MASK_DT_INT_REG_ADDR(n) \
(DT_REG_ADDR(DT_INST_PHANDLE_BY_NAME(n, clocks, mclk)) + \
DT_INST_CLOCKS_CELL_BY_NAME(n, mclk, offset))
#define ATMEL_SAM0_DT_INST_MCLK_PM_REG_ADDR_OFFSET(n) \
COND_CODE_1(DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(mclk)), \
(ATMEL_SAM0_DT_INST_CELL_REG_ADDR_OFFSET(n, mclk)), \
(ATMEL_SAM0_DT_INST_CELL_REG_ADDR_OFFSET(n, pm)))
/* Helper macro to get peripheral clock bit mask.
*/
#define ATMEL_SAM0_DT_INST_MCLK_PM_PERIPH_MASK(n, cell) \
COND_CODE_1(DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(mclk)), \
(ATMEL_SAM0_DT_INST_CELL_PERIPH_MASK(n, mclk, cell)), \
(ATMEL_SAM0_DT_INST_CELL_PERIPH_MASK(n, pm, cell)))
/* Helper macros for use with ATMEL SAM0 DMAC controller
* return 0xff as default value if there is no 'dmas' property