Commit d91e8a3e authored Jun 23, 2018 by Masahiro Yamada Committed by Miquel Raynal Jul 18, 2018

dt-binding: mtd: denali_dt: document clock property



Commit 30f9f2fb ("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 <yamada.masahiro@socionext.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

parent cd1beffa

Documentation/devicetree/bindings/mtd/denali-nand.txt

+5 −0

Original line number	Diff line number	Diff line
		@@ -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>;
		};