Thread (16 messages) 16 messages, 5 authors, 2018-08-13

Re: [PATCH 2/3] dt-bindings: i3c: Document Synopsys DesignWare I3C master bindings

From: vitor <hidden>
Date: 2018-08-08 16:59:38
Also in: linux-doc, linux-gpio, linux-i2c, lkml

Hi Rob,


On 25-07-2018 20:57, Rob Herring wrote:
On Fri, Jul 20, 2018 at 09:57:51PM +0100, Vitor soares wrote:
quoted
This patch document Synopsys DesignWare I3C master DT bindings.

Signed-off-by: Vitor soares <redacted>
---
  .../devicetree/bindings/i3c/snps,dw-i3c-master.txt | 43 ++++++++++++++++++++++
  1 file changed, 43 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
diff --git a/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt b/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
new file mode 100644
index 0000000..7f5c8b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
@@ -0,0 +1,43 @@
+Bindings for Synopsys DesignWare I3C master block
+=================================================
+
+Required properties:
+--------------------
+- compatible: shall be "snps,dw-i3c-master"
Only one version and no version number?

... and an SoC specific compatible string.
I'm not understanding. Can you explain?
quoted
+- clocks: shall reference the core_clk
+- clock-names: shall contain "core_clk"
"_clk" is redundant and *-names with a single entry is kind of
pointless.
I will fix it for next version.
quoted
+- interrupts: the interrupt line connected to this I3C master
+- reg:  Offset and length of I3C master registers
+
+Mandatory properties defined by the generic binding (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details):
+
+- #address-cells: shall be set to 3
+- #size-cells: shall be set to 0
+
+Optional properties defined by the generic binding (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details):
+
+- i2c-scl-hz
+- i3c-scl-hz
+
+I3C device connected on the bus follow the generic description (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details).
+
+Example:
+
+	i3c-master@0x2000 {
Drop the '0x'
quoted
+		compatible = "snps,dw-i3c-master";
+		#address-cells = <3>;
+		#size-cells = <0>;
+		reg = <0x02000 0x1000>;
+		interrupts = <0>;
+		clocks = <&i3cclk>;
+		clock-names = "core_clk";
+
+		eeprom@0x57{
+			compatible = "atmel,24c01";
+			reg = < 0x57 0x80000010 0x0>;
+			pagesize = <0x8>;
+		};
+	};
-- 
2.7.4
Thanks for your feedback.

Best regards,
Vitor Soares
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