linux-kernel - [PATCH V5 2/3] dt-bindings: soc: qcom: GENI SE SPI controller device tree binding

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Message-Id: <1538574265-30235-3-git-send-email-alokc@codeaurora.org>
Date:   Wed,  3 Oct 2018 19:14:24 +0530
From:   Alok Chauhan <alokc@...eaurora.org>
To:     swboyd@...omium.org, dianders@...omium.org, broonie@...nel.org,
        mka@...omium.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     Dilip Kota <dkota@...eaurora.org>,
        Alok Chauhan <alokc@...eaurora.org>
Subject: [PATCH V5 2/3] dt-bindings: soc: qcom: GENI SE SPI controller device tree binding

From: Dilip Kota <dkota@...eaurora.org>

Move GENI SE SPI controller device-tree bindings
from devicetree/bindings/soc/qcom/qcom,geni-se.txt
to devicetree/bindings/spi/qcom,spi-geni-qcom.txt.

Signed-off-by: Dilip Kota <dkota@...eaurora.org>
Reviewed-by: Douglas Anderson <dianders@...omium.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Alok Chauhan <alokc@...eaurora.org>
---
 .../devicetree/bindings/soc/qcom/qcom,geni-se.txt  | 27 ++-------------
 .../devicetree/bindings/spi/qcom,spi-geni-qcom.txt | 39 ++++++++++++++++++++++
 2 files changed, 41 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.txt

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt
index b9d0c21..dab7ca9 100644
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt
@@ -53,19 +53,8 @@ Required properties:
 - clocks:		Serial engine core clock needed by the device.
 
 Qualcomm Technologies Inc. GENI Serial Engine based SPI Controller
-
-Required properties:
-- compatible:		Must contain "qcom,geni-spi".
-- reg:			Must contain SPI register location and length.
-- interrupts:		Must contain SPI controller interrupts.
-- clock-names:		Must contain "se".
-- clocks:		Serial engine core clock needed by the device.
-- #address-cells:	Must be <1> to define a chip select address on
-			the SPI bus.
-- #size-cells:		Must be <0>.
-
-SPI slave nodes must be children of the SPI master node and conform to SPI bus
-binding as described in Documentation/devicetree/bindings/spi/spi-bus.txt.
+node binding is described in
+Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.txt.
 
 Example:
 	geniqup@...000 {
@@ -102,16 +91,4 @@ Example:
 			pinctrl-1 = <&qup_1_uart_3_sleep>;
 		};
 
-		spi0: spi@...000 {
-			compatible = "qcom,geni-spi";
-			reg = <0xa84000 0x4000>;
-			interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;
-			clock-names = "se";
-			clocks = <&clock_gcc GCC_QUPV3_WRAP0_S0_CLK>;
-			pinctrl-names = "default", "sleep";
-			pinctrl-0 = <&qup_1_spi_2_active>;
-			pinctrl-1 = <&qup_1_spi_2_sleep>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-		};
 	}
diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.txt b/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.txt
new file mode 100644
index 0000000..790311a
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.txt
@@ -0,0 +1,39 @@
+GENI based Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
+
+The QUP v3 core is a GENI based AHB slave that provides a common data path
+(an output FIFO and an input FIFO) for serial peripheral interface (SPI)
+mini-core.
+
+SPI in master mode supports up to 50MHz, up to four chip selects, programmable
+data path from 4 bits to 32 bits and numerous protocol variants.
+
+Required properties:
+- compatible:		Must contain "qcom,geni-spi".
+- reg:			Must contain SPI register location and length.
+- interrupts:		Must contain SPI controller interrupts.
+- clock-names:		Must contain "se".
+- clocks:		Serial engine core clock needed by the device.
+- #address-cells:	Must be <1> to define a chip select address on
+			the SPI bus.
+- #size-cells:		Must be <0>.
+
+SPI Controller nodes must be child of GENI based Qualcomm Universal
+Peripharal. Please refer GENI based QUP wrapper controller node bindings
+described in Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt.
+
+SPI slave nodes must be children of the SPI master node and conform to SPI bus
+binding as described in Documentation/devicetree/bindings/spi/spi-bus.txt.
+
+Example:
+	spi0: spi@...000 {
+		compatible = "qcom,geni-spi";
+		reg = <0xa84000 0x4000>;
+		interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;
+		clock-names = "se";
+		clocks = <&clock_gcc GCC_QUPV3_WRAP0_S0_CLK>;
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&qup_1_spi_2_active>;
+		pinctrl-1 = <&qup_1_spi_2_sleep>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
-- 
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a Linux Foundation Collaborative Project