On 3 March 2017 at 14:21, Rob Herring [off-list ref] wrote:

On Thu, Mar 02, 2017 at 02:22:09PM +0800, Chunyan Zhang wrote:

quoted

SC9860 use the same serial device, so added a new compatible string to
support SC9860 as well, also added an example of how to describe this
serial device in DT.

Signed-off-by: Chunyan Zhang <redacted>
---
 Documentation/devicetree/bindings/serial/sprd-uart.txt | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.txt b/Documentation/devicetree/bindings/serial/sprd-uart.txt
index 2aff0f2..8bd8144 100644
--- a/Documentation/devicetree/bindings/serial/sprd-uart.txt
+++ b/Documentation/devicetree/bindings/serial/sprd-uart.txt

@@ -1,7 +1,20 @@
 * Spreadtrum serial UART

 Required properties:
-- compatible: must be "sprd,sc9836-uart"
+- compatible must contain:
+  * "sprd,sc9836-uart" for SC9836 and all Spreadtrum SoCs
+  This also can be specific with:
+  * "sprd,sc9860-uart" for SC9860

Just say:

- compatible: must be one of:
        "sprd,sc9836-uart"
        "sprd,sc9860-uart", "sprd,sc9836-uart"

quoted

+
 - reg: offset and length of the register set for the device
 - interrupts: exactly one interrupt specifier
 - clocks: phandles to input clocks.
+
+Example:
+     uart0: serial at 70000000 {
+             compatible = "sprd,sc9860-uart",
+                          "sprd,sc9836-uart";
+             reg = <0x000000 0x100>;

unit address doesn't match the reg property.

OK, I will revise dts file accordingly.

Thanks,
Chunyan

quoted

+             interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+             clocks = <&ext_26m>;
+     };
--
2.7.4