From d91e8a3eec69a9767a6efa17543a12e1bfcbe099 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Sat, 23 Jun 2018 01:06:36 +0900 Subject: dt-binding: mtd: denali_dt: document clock property Commit 30f9f2fb7ba0 ("mtd: denali: add a DT driver") supported the clock enablement, but did not document it in the DT binding. In addition to the existing clock, this commit adds more clocks based on the IP specification. According to the Denali User's Guide, this IP needs three clocks: - clk: controller core clock - clk_x: bus interface clock - ecc_clk: clock at which ECC circuitry is run The driver should accept the current single clock for the backward compatibility, but the DT binding should represent the real hardware, and future platforms must follow this. Signed-off-by: Masahiro Yamada Reviewed-by: Boris Brezillon Reviewed-by: Rob Herring Signed-off-by: Miquel Raynal --- Documentation/devicetree/bindings/mtd/denali-nand.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/denali-nand.txt b/Documentation/devicetree/bindings/mtd/denali-nand.txt index 0ee8edb60efc..f33da8782741 100644 --- a/Documentation/devicetree/bindings/mtd/denali-nand.txt +++ b/Documentation/devicetree/bindings/mtd/denali-nand.txt @@ -8,6 +8,9 @@ Required properties: - reg : should contain registers location and length for data and reg. - reg-names: Should contain the reg names "nand_data" and "denali_reg" - interrupts : The interrupt number. + - clocks: should contain phandle of the controller core clock, the bus + interface clock, and the ECC circuit clock. + - clock-names: should contain "nand", "nand_x", "ecc" Optional properties: - nand-ecc-step-size: see nand.txt for details. If present, the value must be @@ -31,5 +34,7 @@ nand: nand@ff900000 { compatible = "altr,socfpga-denali-nand"; reg = <0xff900000 0x20>, <0xffb80000 0x1000>; reg-names = "nand_data", "denali_reg"; + clocks = <&nand_clk>, <&nand_x_clk>, <&nand_ecc_clk>; + clock-names = "nand", "nand_x", "ecc"; interrupts = <0 144 4>; }; -- cgit v1.2.3-59-g8ed1b