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These are slighly easier to read.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121034130.1381872-9-lkundrak@v3.sk'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Drop the linux,usable-memory properties; the schema is unhappy about
them:
mmp2-olpc-xo-1-75.dt.yaml: /: memory: False schema does not allow
{'linux,usable-memory': [[0, 528482304]],
'available': [[847872, 519245824, 4096, 782336]],
'reg': [[0, 536870912]], 'device_type': ['memory']}
They've been cargo-culted from Open Firmware and I don't know what
purpose they serve. Perhaps they are meant to provide the OFW runtime.
In that case it's still okay to drop them from here; OFW is welcome to add
it upon boot.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121034130.1381872-5-lkundrak@v3.sk'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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It contains a reg property. Add its base to the node name.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121034130.1381872-4-lkundrak@v3.sk'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The check_spi_bus_bridge() in scripts/dtc/checks.c requires that the node
have "spi-slave" property must with "#address-cells = <0>" and
"#size-cells = <0>". But currently both "#address-cells" and "#size-cells"
properties are deleted, the corresponding default values are 2 and 1. As a
result, the check fails and below warnings is displayed.
arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): \
/soc/apb@d4000000/spi@d4037000: incorrect #address-cells for SPI bus
also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3
arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): \
/soc/apb@d4000000/spi@d4037000: incorrect #size-cells for SPI bus
also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3
arch/arm/boot/dts/mmp2-olpc-xo-1-75.dtb: Warning (spi_bus_reg): \
Failed prerequisite 'spi_bus_bridge'
Because the value of "#size-cells" is already defined as zero in the node
"ssp3: spi@d4037000" in arch/arm/boot/dts/mmp2.dtsi. So we only need to
explicitly add "#address-cells = <0>" and keep "#size-cells" no change.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20201207084752.1665-2-thunder.leizhen@huawei.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This makes validation happier.
Link: https://lore.kernel.org/r/20200925234805.228251-3-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Enable the 3D + 2D (GC860) GPU core.
Link: https://lore.kernel.org/r/20200718205019.184927-12-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This enables the audio SRAM, DMA engine, I2S interface, and codec, hooks
them together and adds a audio-graph-card instance.
It also removes the jack gpios from the gpio-keys instance, because the
audio jack driver registers an input device.
Link: https://lore.kernel.org/r/20200718205019.184927-10-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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On the XO-1.75, this node represents a bus interface that operates in slave
mode and thus is only able to accommodate a single subnode; no address
cells are necessary.
The Documentation/devicetree/bindings/spi/spi-controller.yaml binding
prefers that we drop the property instead of setting it to zero.
This fixes a DT validation error:
arch/arm/boot/dts/mmp2-olpc-xo-1-75.dt.yaml: spi@d4037000:
{ ... } is valid under each of {'required': ['spi-slave']},
{'required': ['#address-cells']}
We also need to drop #size-cells:
arch/arm/boot/dts/mmp2-olpc-xo-1-75.dt.yaml: spi@d4037000:
'#address-cells' is a dependency of '#size-cells'
Link: https://lore.kernel.org/r/20200718205019.184927-3-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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mmp2-olpc-xo-1-75.dt.yaml: camera_i2c: $nodename:0:
'camera_i2c' does not match '^i2c(@.*)?'
mmp2-olpc-xo-1-75.dt.yaml: camera_i2c: 'sda-gpios' is a required property
mmp2-olpc-xo-1-75.dt.yaml: camera_i2c: 'scl-gpios' is a required property
The "gpios" property actually was documented as deprecated, but got dropped
in commit 0175ce4a58d6 ("dt-bindings: i2c: Convert i2c-gpio binding to
json-schema"). It's probably best kept forgotten though.
Link: https://lore.kernel.org/r/20200718205019.184927-2-lkundrak@v3.sk
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This is a fairly complete description of an OLPC XO 1.75 laptop.
What's missing for now is the GPU, LCD controller, DCON, the panel and
audio.
The machine is booted with OpenFirmware and thus has a devicetree.
However, older versions are unable to create a valid FDT and don't
follow the Linux bindings. Having an device tree in the kernel tree
makes it easier to use mainline kernels on such machines, test changes
with CONFIG_ARM_APPENDED_DTB and give a good reference on what bindings
are used on the machine without an access to one.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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Lubomir Rintel
Zhen Lei