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Commit 3aefc655 authored by Paul Burton's avatar Paul Burton Committed by Ralf Baechle
Browse files

MIPS: SEAD3: Probe parallel flash via DT 



Probe the system parallel flash using device tree rather than platform
code, in order to reduce the amount of the latter.

Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14053/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 63c8d90c

arch/mips/boot/dts/mti/sead3.dts

+24 −0
Original line number Diff line number Diff line
@@ -69,6 +69,30 @@ 
		has-transaction-translator;

	};



	flash@1c000000 {

		compatible = "intel,28f128j3", "cfi-flash";

		reg = <0x1c000000 0x2000000>;

		#address-cells = <1>;

		#size-cells = <1>;

		bank-width = <4>;



		partitions {

			compatible = "fixed-partitions";

			#address-cells = <1>;

			#size-cells = <1>;



			user-fs@0 {

				label = "User FS";

				reg = <0x0 0x1fc0000>;

			};



			board-config@3e0000 {

				label = "Board Config";

				reg = <0x1fc0000 0x40000>;

			};

		};

	};



	/* UART connected to FTDI & miniUSB socket */

	uart0: uart@1f000900 {

		compatible = "ns16550a";

arch/mips/mti-sead3/sead3-platform.c

+0 −37
Original line number Diff line number Diff line
@@ -8,44 +8,8 @@ 
#include <linux/dma-mapping.h>

#include <linux/init.h>

#include <linux/leds.h>

#include <linux/mtd/physmap.h>

#include <linux/platform_device.h>



static struct mtd_partition sead3_mtd_partitions[] = {

	{

		.name =		"User FS",

		.offset =	0x00000000,

		.size =		0x01fc0000,

	}, {

		.name =		"Board Config",

		.offset =	0x01fc0000,

		.size =		0x00040000,

		.mask_flags =	MTD_WRITEABLE

	},

};



static struct physmap_flash_data sead3_flash_data = {

	.width		= 4,

	.nr_parts	= ARRAY_SIZE(sead3_mtd_partitions),

	.parts		= sead3_mtd_partitions

};



static struct resource sead3_flash_resource = {

	.start		= 0x1c000000,

	.end		= 0x1dffffff,

	.flags		= IORESOURCE_MEM

};



static struct platform_device sead3_flash = {

	.name		= "physmap-flash",

	.id		= 0,

	.dev		= {

		.platform_data	= &sead3_flash_data,

	},

	.num_resources	= 1,

	.resource	= &sead3_flash_resource,

};



#define LEDFLAGS(bits, shift)		\

	((bits << 8) | (shift << 8))
@@ -113,7 +77,6 @@ static struct platform_device sead3_led_device = { 
};



static struct platform_device *sead3_platform_devices[] __initdata = {

	&sead3_flash,

	&pled_device,

	&fled_device,

	&sead3_led_device,