On 2016/11/25 21:30, Marek Vasut wrote:
On 11/18/2016 03:59 AM, Shawn Lin wrote:
Add binding document for the Rockchip serial flash controller.
Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
Changes in v2: None
.../devicetree/bindings/mtd/rockchip-sfc.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/rockchip-sfc.txt
diff --git a/Documentation/devicetree/bindings/mtd/rockchip-sfc.txt b/Documentation/devicetree/bindings/mtd/rockchip-sfc.txt
new file mode 100644
index 0000000..28430ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/rockchip-sfc.txt
@@ -0,0 +1,31 @@
+Rockchip Serial Flash Controller
+
+Required properties:
+- compatible : Should be
+ "rockchip,rk1108-sfc", "rockchip,sfc" for ROCKCHIP RK1108.
+- address-cells : Should be 1.
+- size-cells : Should be 0.
Shouldn't these two props have a # prefix ? I'm not sure they should
even be part of this binding document at all.
+- clocks: Must contain two entries for each entry in clock-names.
+- clock-names: Shall be "sfc" for the transfer-clock, and "hsfc" for
+ the peripheral clock.
+- interrupts : Should contain the interrupt for the device.
+- reg: Physical base address of the controller and length of memory mapped.
+
+Optional properties:
+- rockchip,sfc-no-dma: Indicate the controller doesn't support dma transfer.
DMA should be in capital letters.
Both of DMA or dma could be found by grepping the
Documentation/devicetree/bindings/, so I think it
isn't a big deal for this. :)
+Example:
+nor_flash: sfc@301c0000 {
+ compatible = "rockchip,rk1108-sfc", "rockchip,sfc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&cru SCLK_SFC>, <&cru HCLK_SFC>;
+ clock-names = "sfc", "hsfc";
+ interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+ reg = <0x301c0000 0x1000>;
+ spi-nor@0 {
+ compatible = "jedec,spi-nor";
+ spi-max-frequency = <12000000>;
+ reg = <0>;
+ };
+};
--
Best Regards
Shawn Lin
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