On 1/11/2018 8:12 AM, Rob Herring wrote:
On Tue, Jan 9, 2018 at 12:36 PM, Karthik Ramasubramanian
<kramasub@xxxxxxxxxxxxxx> wrote:
On 1/2/2018 8:55 AM, Rob Herring wrote:
On Wed, Dec 27, 2017 at 09:27:25AM -0700, Karthikeyan Ramasubramanian
wrote:
Add device tree binding support for GENI based UART Controller in the
QUP Wrapper.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@xxxxxxxxxxxxxx>
Signed-off-by: Girish Mahadevan <girishm@xxxxxxxxxxxxxx>
---
.../devicetree/bindings/serial/qcom,geni-uart.txt | 31
++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644
Documentation/devicetree/bindings/serial/qcom,geni-uart.txt
diff --git a/Documentation/devicetree/bindings/serial/qcom,geni-uart.txt
b/Documentation/devicetree/bindings/serial/qcom,geni-uart.txt
new file mode 100644
index 0000000..e60ec6a
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/qcom,geni-uart.txt
@@ -0,0 +1,31 @@
+Qualcomm Technologies Inc. GENI based Serial UART Controller driver
+
+This serial UART driver supports console use-cases. This driver is meant
+only for Generic Interface (GENI) based Qualcomm Universal Peripheral
(QUP)
+cores and isn't backwards compatible.
+
+Required properties:
+- compatible: should contain "qcom,geni-uart, qcom,geni-console"
Is console different programming model or just how you are using the
h/w? for the latter, drop it as we have stdout-path to select a console.
The console programming model is different from a regular UART port and
hence the compatible field contains console in it.
And "console" is what the h/w reference manual calls it? If so, then
it is fine. If not, sounds like a Linuxism.
The hardware reference manual calls it Debug UART. I can change the
compatible string to contain "qcom,geni-debug-uart".
Rob
Regards,
Karthik.
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