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mtd: nand: atmel_nand: retrieve NFC clock

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Retrieve the NFC clock to make sure it is enabled. Make that optional to ensure
compatibility with previous device trees but document it as mandatory so newer
device trees will include it.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Boris BREZILLON
2014-09-13 01:23:59 +02:00
committed by Brian Norris
parent 55ab9ec99b
commit 2d405ec5fd
2 changed files with 27 additions and 0 deletions
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2
Documentation/devicetree/bindings/mtd/atmel-nand.txt
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@@ -36,6 +36,7 @@ Optional properties:
- reg : should specify the address and size used for NFC command registers,
NFC registers and NFC Sram. NFC Sram address and size can be absent
if don't want to use it.
- clocks: phandle to the peripheral clock
- Optional properties:
- atmel,write-by-sram: boolean to enable NFC write by sram.
@@ -98,6 +99,7 @@ nand0: nand@40000000 {
compatible = "atmel,sama5d3-nfc";
#address-cells = <1>;
#size-cells = <1>;
clocks = <&hsmc_clk>
reg = <
0x70000000 0x10000000 /* NFC Command Registers */
0xffffc000 0x00000070 /* NFC HSMC regs */