The xSPI IP found on RZ/G3E SoC similar to RPC-IF interface, but it
can support writes on memory-mapped area. Even though the registers are
different, the rpcif driver code can be reused for xSPI by adding wrapper
function to it.
This patch series tested on RZ/G2L and RZ/G3E by overwriting boot
partitions.
v3->v4:
* Added a definition for the spi core clock in the R9A09G047 CPG bindings
header file.
* Updated the example with spi core clock
* Retained Rb tag from Rob as these changes are trivial.
* Fixed the duplicate most outer set of parentheses in patch#2.
* Updated commit description for patch{#4,#7,#8}.
* Renamed the functions *_helper()->*_impl().
* Replaced ssize_t->size_t as the return data type for
rpcif_dirmap_read_impl().
* Renamed the local variable length->read and it's data type
ssize_t->size_t.
* Added comment for addr_nbytes in struct rpcif_priv.
* Added struct rpcif_impl for holding the function pointers and data to
handle the differences between xspi and rpc-if interface and added
suffix _impl() for functions.
* The enabling/disabling of spi/spix2 clocks at runtime leading to
flash write failure. So, enable these clocks during probe() and
disable it in remove().
* Collected tags.
v2->v3:
* Fixed RPCIF_DRENR_CDB macro error.
v1->v2:
* As rz-xspi is too generic, replaced file name rz-xspi->rzg3e-xspi
and dropped generic compatible rz-xspi.
* Dropped prefix spi from interrupt names.
* Updated the example with above changes.
* Retained Rb tag from Rob as these changes are trivial.
* Fixed the build error reported by bot by dropping
EXPORT_SYMBOL(xspi_dirmap_read) and restoring
EXPORT_SYMBOL(rpcif_dirmap_read).
* Replaced enum XSPI_RZ->XSPI_RZ_G3E.
* Replaced compatible rz-xspi->r9a09g047-xspi and device data
xspi_info_rz->xspi_info_r9a09g047.
Biju Das (9):
dt-bindings: memory: Document RZ/G3E support
memory: renesas-rpc-if: Fix RPCIF_DRENR_CDB macro error
memory: renesas-rpc-if: Move rpc-if reg definitions
memory: renesas-rpc-if: Use devm_reset_control_array_get_exclusive()
memory: renesas-rpc-if: Move rpcif_info definitions near to the user
memory: renesas-rpc-if: Add regmap to struct rpcif_info
memory: renesas-rpc-if: Add wrapper functions
memory: renesas-rpc-if: Add RZ/G3E xSPI support
spi: rpc-if: Add write support for memory-mapped area
.../renesas,rzg3e-xspi.yaml | 135 ++++
drivers/memory/renesas-rpc-if-regs.h | 147 ++++
drivers/memory/renesas-rpc-if.c | 703 +++++++++++++-----
drivers/memory/renesas-xspi-if-regs.h | 105 +++
drivers/spi/spi-rpc-if.c | 16 +-
.../dt-bindings/clock/renesas,r9a09g047-cpg.h | 1 +
include/memory/renesas-rpc-if.h | 4 +
7 files changed, 919 insertions(+), 192 deletions(-)
create mode 100644 Documentation/devicetree/bindings/memory-controllers/renesas,rzg3e-xspi.yaml
create mode 100644 drivers/memory/renesas-rpc-if-regs.h
create mode 100644 drivers/memory/renesas-xspi-if-regs.h
--
2.43.0
