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Commit b484ff42 authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by Jason Cooper
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ARM: mvebu: Add support for NOR flash device on Armada XP-DB board 



The Armada XP Development Board (DB-78460-BP) has a NOR flash device
connected to the Device Bus. This commit adds the device tree node
to support this device.

This SoC supports a flexible and dynamic decoding window allocation
scheme; but since this feature is still not implemented we need
to specify the window base address in the device tree node itself.

This base address has been selected in a completely arbitrary fashion.

Signed-off-by: default avatarEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent ee514b38

arch/arm/boot/dts/armada-xp-db.dts

+32 −0
Original line number Diff line number Diff line
@@ -30,6 +30,9 @@ 
	};



	soc {

		ranges = <0          0 0xd0000000 0x100000	/* Internal registers 1MiB */

			  0xf0000000 0 0xf0000000 0x1000000>;	/* Device Bus, NOR 16MiB   */



		internal-regs {

			serial@12000 {

				clock-frequency = <250000000>;
@@ -156,6 +159,35 @@ 
					status = "okay";

				};

			};



			devbus-bootcs@10400 {

				status = "okay";

				ranges = <0 0xf0000000 0x1000000>;



				/* Device Bus parameters are required */



				/* Read parameters */

				devbus,bus-width    = <8>;

				devbus,turn-off-ps  = <60000>;

				devbus,badr-skew-ps = <0>;

				devbus,acc-first-ps = <124000>;

				devbus,acc-next-ps  = <248000>;

				devbus,rd-setup-ps  = <0>;

				devbus,rd-hold-ps   = <0>;



				/* Write parameters */

				devbus,sync-enable = <0>;

				devbus,wr-high-ps  = <60000>;

				devbus,wr-low-ps   = <60000>;

				devbus,ale-wr-ps   = <60000>;



				/* NOR 16 MiB */

				nor@0 {

					compatible = "cfi-flash";

					reg = <0 0x1000000>;

					bank-width = <2>;

				};

			};

		};

	};

};