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authorLars Poeschel <poeschel@lemonage.de>2013-08-28 10:38:50 +0200
committerLinus Walleij <linus.walleij@linaro.org>2013-08-30 09:25:52 +0200
commit45971686967e252e800992bb23f3f9809ceece38 (patch)
treed213673d62a4e9ba4011bdf06c59dbf53758a04d /Documentation/devicetree/bindings/gpio
parent6c56c6cd8031e01719e5a5392571c3be08737434 (diff)
gpio: mcp23s08: rename the device tree property
The device tree property should be more descriptive. microchip seems more reasonable than mcp. The old mcp prefix is still supported but marked as deprecated. Users of mcp have to switch to the microchip prefix. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
-rw-r--r--Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt26
1 files changed, 18 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
index 629d0ef17308..daa30174bcc1 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
@@ -3,10 +3,17 @@ Microchip MCP2308/MCP23S08/MCP23017/MCP23S17 driver for
Required properties:
- compatible : Should be
- - "mcp,mcp23s08" for 8 GPIO SPI version
- - "mcp,mcp23s17" for 16 GPIO SPI version
- - "mcp,mcp23008" for 8 GPIO I2C version or
- - "mcp,mcp23017" for 16 GPIO I2C version of the chip
+ - "mcp,mcp23s08" (DEPRECATED) for 8 GPIO SPI version
+ - "mcp,mcp23s17" (DEPRECATED) for 16 GPIO SPI version
+ - "mcp,mcp23008" (DEPRECATED) for 8 GPIO I2C version or
+ - "mcp,mcp23017" (DEPRECATED) for 16 GPIO I2C version of the chip
+
+ - "microchip,mcp23s08" for 8 GPIO SPI version
+ - "microchip,mcp23s17" for 16 GPIO SPI version
+ - "microchip,mcp23008" for 8 GPIO I2C version or
+ - "microchip,mcp23017" for 16 GPIO I2C version of the chip
+ NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
+ removed.
- #gpio-cells : Should be two.
- first cell is the pin number
- second cell is used to specify flags. Flags are currently unused.
@@ -15,10 +22,11 @@ Required properties:
SPI uses this to specify the chipselect line which the chip is
connected to. The driver and the SPI variant of the chip support
multiple chips on the same chipselect. Have a look at
- mcp,spi-present-mask below.
+ microchip,spi-present-mask below.
Required device specific properties (only for SPI chips):
-- mcp,spi-present-mask : This is a present flag, that makes only sense for SPI
+- mcp,spi-present-mask (DEPRECATED)
+- microchip,spi-present-mask : This is a present flag, that makes only sense for SPI
chips - as the name suggests. Multiple SPI chips can share the same
SPI chipselect. Set a bit in bit0-7 in this mask to 1 if there is a
chip connected with the corresponding spi address set. For example if
@@ -26,11 +34,13 @@ Required device specific properties (only for SPI chips):
which is 0x08. mcp23s08 chip variant only supports bits 0-3. It is not
possible to mix mcp23s08 and mcp23s17 on the same chipselect. Set at
least one bit to 1 for SPI chips.
+ NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
+ removed.
- spi-max-frequency = The maximum frequency this chip is able to handle
Example I2C:
gpiom1: gpio@20 {
- compatible = "mcp,mcp23017";
+ compatible = "microchip,mcp23017";
gpio-controller;
#gpio-cells = <2>;
reg = <0x20>;
@@ -38,7 +48,7 @@ gpiom1: gpio@20 {
Example SPI:
gpiom1: gpio@0 {
- compatible = "mcp,mcp23s17";
+ compatible = "microchip,mcp23s17";
gpio-controller;
#gpio-cells = <2>;
spi-present-mask = <0x01>;

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