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| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-28 11:33:12 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2020-05-30 11:33:30 +0200 |
| commit | 25d11e9ebe0a5560dc057d1261215d9157c0ae8a (patch) | |
| tree | c3934e2284539ceaf11dd466a64a2bb5627efb35 /Documentation | |
| parent | dt-bindings: i2c: Convert DW I2C binding to DT schema (diff) | |
| download | linux-25d11e9ebe0a5560dc057d1261215d9157c0ae8a.tar.xz linux-25d11e9ebe0a5560dc057d1261215d9157c0ae8a.zip | |
dt-bindings: i2c: Convert DW I2C slave to the DW I2C master example
dtc currently doesn't support I2C_OWN_SLAVE_ADDRESS flag set in the
i2c "reg" property. If dtc finds an i2c-slave sub-node having an address
higher than ten-bits wide it'll print an ugly warning:
Warning (i2c_bus_reg): /example-2/i2c@1120000/eeprom@64: I2C bus unit address format error, expected "40000064"
Warning (i2c_bus_reg): /example-2/i2c@1120000/eeprom@64:reg: I2C address must be less than 10-bits, got "0x40000064"
In order to silence dtc up let's replace the corresponding DT binding
example with a normal DW I2C master mode-based one. It's done by clearing
the I2C_OWN_SLAVE_ADDRESS bit in the reg property and converting the
sub-node to be compatible with normal EEPROM like "atmel,24c02".
Just revert this commit when dtc is fixed.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml index 4bd430b2b41d..dff3f267bdee 100644 --- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml @@ -136,8 +136,8 @@ examples: interrupts = <0>; eeprom@64 { - compatible = "linux,slave-24c02"; - reg = <0x40000064>; + compatible = "atmel,24c02"; + reg = <0x64>; }; }; - | |