| From: |
| Alexey Charkov <alchark-AT-gmail.com> |
| To: |
| Mark Brown <broonie-AT-kernel.org>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>, Tudor Ambarus <tudor.ambarus-AT-linaro.org>, Pratyush Yadav <pratyush-AT-kernel.org>, Michael Walle <mwalle-AT-kernel.org>, Miquel Raynal <miquel.raynal-AT-bootlin.com>, Richard Weinberger <richard-AT-nod.at>, Vignesh Raghavendra <vigneshr-AT-ti.com>, Krzysztof Kozlowski <krzk-AT-kernel.org> |
| Subject: |
| [PATCH 0/3] mtd: spi-nor: Add VIA/WonderMedia serial flash controller driver |
| Date: |
| Sat, 10 May 2025 23:42:20 +0400 |
| Message-ID: |
| <20250510-wmt-sflash-v1-0-02a1ac6adf12@gmail.com> |
| Cc: |
| linux-spi-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-mtd-AT-lists.infradead.org, linux-arm-kernel-AT-lists.infradead.org, Alexey Charkov <alchark-AT-gmail.com> |
| Archive-link: |
| Article |
Add a driver for the self-contained SPI NOR flash controller found on
VIA/WonderMedia SoCs, along with the respective DT binding and DTS.
The driver is a clean reimplementation based on the Linux SPI NOR
framework, although only chip probing routines are SPI NOR specific.
The rest of the controller operation is abstracted away behind a small
set of MMIO registers and a physical memory mapping for chip contents.
In fact, the vendor's implementation open-coded all driver operations
on top of the MTD framework directly, but had to rely on a static table
of supported flash chips indexed by ID due to the lack of auto-probing.
Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
Alexey Charkov (3):
dt-bindings: spi: Add VIA/WonderMedia serial flash controller
mtd: spi-nor: Add a driver for the VIA/WonderMedia serial flash controller
ARM: dts: vt8500: Add serial flash controller and its clock
.../devicetree/bindings/spi/via,vt8500-sflash.yaml | 122 +++++
MAINTAINERS | 2 +
arch/arm/boot/dts/vt8500/vt8500-bv07.dts | 37 ++
arch/arm/boot/dts/vt8500/vt8500.dtsi | 34 ++
arch/arm/boot/dts/vt8500/wm8505-ref.dts | 37 ++
arch/arm/boot/dts/vt8500/wm8505.dtsi | 21 +
arch/arm/boot/dts/vt8500/wm8650-mid.dts | 37 ++
arch/arm/boot/dts/vt8500/wm8650.dtsi | 21 +
arch/arm/boot/dts/vt8500/wm8750-apc8750.dts | 37 ++
arch/arm/boot/dts/vt8500/wm8750.dtsi | 21 +
arch/arm/boot/dts/vt8500/wm8850-w70v2.dts | 37 ++
arch/arm/boot/dts/vt8500/wm8850.dtsi | 21 +
arch/arm/boot/dts/vt8500/wm8950-apc-rock.dts | 37 ++
drivers/mtd/spi-nor/controllers/Kconfig | 14 +
drivers/mtd/spi-nor/controllers/Makefile | 1 +
drivers/mtd/spi-nor/controllers/wmt-sflash.c | 525 +++++++++++++++++++++
16 files changed, 1004 insertions(+)
---
base-commit: ed61cb3d78d585209ec775933078e268544fe9a4
change-id: 20250510-wmt-sflash-b0ba35f1a3ae
Best regards,
--
Alexey Charkov <alchark@gmail.com>
