Add support to the FPGA manager for programming Microchip Polarfire
FPGAs over slave SPI interface with .dat formatted bitsream image.
Changelog:
v1 -> v2: fix printk formating
v2 -> v3:
* replace "microsemi" with "microchip"
* replace prefix "microsemi_fpga_" with "mpf_"
* more sensible .compatible and .name strings
* remove unused defines STATUS_SPI_VIOLATION and STATUS_SPI_ERROR
v3 -> v4: fix unused variable warning
Put 'mpf_of_ids' definition under conditional compilation, so it
would not hang unused if CONFIG_OF is not enabled.
v4 -> v5:
* prefix defines with MPF_
* mdelay() -> usleep_range()
* formatting fixes
* add DT bindings doc
* rework fpga_manager_ops.write() to fpga_manager_ops.write_sg()
We can't parse image header in write_init() because image header
size is not known beforehand. Thus parsing need to be done in
fpga_manager_ops.write() callback, but fpga_manager_ops.write()
also need to be reenterable. On the other hand,
fpga_manager_ops.write_sg() is called once. Thus, rework usage of
write() callback to write_sg().
v5 -> v6: fix patch applying
I forgot to clean up unrelated local changes which lead to error on
patch 0001-fpga-microchip-spi-add-Microchip-MPF-FPGA-manager.patch
applying on vanilla kernel.
Ivan Bornyakov (2):
fpga: microchip-spi: add Microchip MPF FPGA manager
dt-bindings: fpga: add binding doc for microchip-spi fpga mgr
.../fpga/microchip,mpf-spi-fpga-mgr.yaml | 32 ++
drivers/fpga/Kconfig | 10 +
drivers/fpga/Makefile | 1 +
drivers/fpga/microchip-spi.c | 448 ++++++++++++++++++
4 files changed, 491 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
create mode 100644 drivers/fpga/microchip-spi.c
--
2.34.1
Add Device Tree Binding doc for Microchip Polarfire FPGA Manager using
slave SPI to load .dat formatted bitstream image.
Signed-off-by: Ivan Bornyakov <[email protected]>
---
.../fpga/microchip,mpf-spi-fpga-mgr.yaml | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
diff --git a/Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml b/Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
new file mode 100644
index 000000000000..6955fc527ed2
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fpga/microchip,mpf-spi-fpga-mgr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip Polarfire FPGA manager.
+
+description: |
+ Device Tree Bindings for Microchip Polarfire FPGA Manager using slave SPI to
+ load the bitstream in .dat format.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - microchip,mpf-spi-fpga-mgr
+
+ reg:
+ items:
+ - description: spi chip select
+
+examples:
+ - |
+ spi@2008000 {
+ ...
+ fpga_mgr: fpga_mgr@0 {
+ compatible = "microchip,mpf-spi-fpga-mgr";
+ spi-max-frequency = <20000000>;
+ reg = <0>;
+ };
+ };
--
2.34.1