This series implements a driver for the efuse found on the Amlogic
Meson6/Meson8/Meson8b SoCs.
A new driver is needed because the existing "meson-efuse" driver
communicates through the "secure monitor" firmware with the HW,
while these older SoCs access the hardware registers directly.
An additional patch also explicitly states that the existing
"meson-efuse" driver is only for the Meson GX SoCs by adjusting
the dt-binding docs, Kconfig help texts, etc.
Please note that the dts patch ("ARM: dts: meson: add the efuse node")
is built on top of my other series ("soc: amlogic: Add Meson6/8/8b SoC
Information driver") from: [0]
changes since v1 at [1]:
- removed incorrect clock operations from .probe() and .remove()
which were left-over from initial development. many thanks to
Srinivas Kandagatla for the super-fast review and for spotting
this!
- extended the commit message of patch #3 with a note stating that
writing is currently not supported by the driver
- updated the .dts patch to include the #size-cells and
#address-cells properties (which allow adding sub-nodes with the
actual nvmem cells)
[0] http://lists.infradead.org/pipermail/linux-amlogic/2017-September/004772.html
[1] http://lists.infradead.org/pipermail/linux-amlogic/2017-October/004825.html
Martin Blumenstingl (4):
dt-bindings: nvmem: Describe the Amlogic Meson6/Meson8/Meson8b efuse
nvmem: meson-efuse: indicate that this driver is only for Meson GX
SoCs
nvmem: add a driver for the Amlogic Meson6/Meson8/Meson8b SoCs
ARM: dts: meson: add the efuse node
.../devicetree/bindings/nvmem/amlogic-efuse.txt | 2 +-
.../bindings/nvmem/amlogic-meson-mx-efuse.txt | 22 ++
arch/arm/boot/dts/meson.dtsi | 15 ++
arch/arm/boot/dts/meson6.dtsi | 3 +
arch/arm/boot/dts/meson8.dtsi | 6 +
arch/arm/boot/dts/meson8b.dtsi | 7 +
drivers/nvmem/Kconfig | 14 +-
drivers/nvmem/Makefile | 2 +
drivers/nvmem/meson-efuse.c | 4 +-
drivers/nvmem/meson-mx-efuse.c | 266 +++++++++++++++++++++
10 files changed, 336 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/nvmem/amlogic-meson-mx-efuse.txt
create mode 100644 drivers/nvmem/meson-mx-efuse.c
--
2.14.2
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