Re: [PATCH v2 02/17] dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings
On Fri, 16 Nov 2018 17:23:48 +0100, Lubomir Rintel wrote: > The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra > signals for handshaking. It needs to know when is the slave (Linux) > side's TX FIFO ready for transfer (the ready-gpio signal on the SPI > controller node) and when does it wish to respond with a command (the > cmd-gpio property). > > Signed-off-by: Lubomir Rintel > Acked-by: Pavel Machek > > --- > Changes since v1: > - s/cmd-gpio/cmd-gpios/ > - s/ready-gpio/ready-gpios/ in the documentation paragraph > - Remove status = "okay" from the example > > .../bindings/misc/olpc,xo1.75-ec.txt | 23 +++ > 1 file changed, 23 insertions(+) > create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt > Reviewed-by: Rob Herring
Re: [PATCH v2 02/17] dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings
On Fri, 16 Nov 2018 17:23:48 +0100, Lubomir Rintel wrote: > The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra > signals for handshaking. It needs to know when is the slave (Linux) > side's TX FIFO ready for transfer (the ready-gpio signal on the SPI > controller node) and when does it wish to respond with a command (the > cmd-gpio property). > > Signed-off-by: Lubomir Rintel > Acked-by: Pavel Machek > > --- > Changes since v1: > - s/cmd-gpio/cmd-gpios/ > - s/ready-gpio/ready-gpios/ in the documentation paragraph > - Remove status = "okay" from the example > > .../bindings/misc/olpc,xo1.75-ec.txt | 23 +++ > 1 file changed, 23 insertions(+) > create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt > Reviewed-by: Rob Herring
[PATCH v2 02/17] dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings
The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
signals for handshaking. It needs to know when is the slave (Linux)
side's TX FIFO ready for transfer (the ready-gpio signal on the SPI
controller node) and when does it wish to respond with a command (the
cmd-gpio property).
Signed-off-by: Lubomir Rintel
Acked-by: Pavel Machek
---
Changes since v1:
- s/cmd-gpio/cmd-gpios/
- s/ready-gpio/ready-gpios/ in the documentation paragraph
- Remove status = "okay" from the example
.../bindings/misc/olpc,xo1.75-ec.txt | 23 +++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
diff --git a/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
new file mode 100644
index ..8c4d649cdd8f
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
@@ -0,0 +1,23 @@
+OLPC XO-1.75 Embedded Controller
+
+Required properties:
+- compatible: Should be "olpc,xo1.75-ec".
+- cmd-gpios: gpio specifier of the CMD pin
+
+The embedded controller requires the SPI controller driver to signal readiness
+to receive a transfer (that is, when TX FIFO contains the response data) by
+strobing the ACK pin with the ready signal. See the "ready-gpios" property of
the
+SSP binding as documented in:
+.
+
+Example:
+{
+ spi-slave;
+ ready-gpios = < 125 GPIO_ACTIVE_HIGH>;
+
+ slave {
+ compatible = "olpc,xo1.75-ec";
+ spi-cpha;
+ cmd-gpios = < 155 GPIO_ACTIVE_HIGH>;
+ };
+ };
--
2.19.1
[PATCH v2 02/17] dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings
The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
signals for handshaking. It needs to know when is the slave (Linux)
side's TX FIFO ready for transfer (the ready-gpio signal on the SPI
controller node) and when does it wish to respond with a command (the
cmd-gpio property).
Signed-off-by: Lubomir Rintel
Acked-by: Pavel Machek
---
Changes since v1:
- s/cmd-gpio/cmd-gpios/
- s/ready-gpio/ready-gpios/ in the documentation paragraph
- Remove status = "okay" from the example
.../bindings/misc/olpc,xo1.75-ec.txt | 23 +++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
diff --git a/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
new file mode 100644
index ..8c4d649cdd8f
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/olpc,xo1.75-ec.txt
@@ -0,0 +1,23 @@
+OLPC XO-1.75 Embedded Controller
+
+Required properties:
+- compatible: Should be "olpc,xo1.75-ec".
+- cmd-gpios: gpio specifier of the CMD pin
+
+The embedded controller requires the SPI controller driver to signal readiness
+to receive a transfer (that is, when TX FIFO contains the response data) by
+strobing the ACK pin with the ready signal. See the "ready-gpios" property of
the
+SSP binding as documented in:
+.
+
+Example:
+{
+ spi-slave;
+ ready-gpios = < 125 GPIO_ACTIVE_HIGH>;
+
+ slave {
+ compatible = "olpc,xo1.75-ec";
+ spi-cpha;
+ cmd-gpios = < 155 GPIO_ACTIVE_HIGH>;
+ };
+ };
--
2.19.1
